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adapt to current mainline kernel dvb-core

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2020-08-29 15:32:42 +02:00
parent 83f5b45928
commit 7f19a0c04b
58 changed files with 2708 additions and 1391 deletions
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41
dvb-core/Kconfig
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@@ -3,6 +3,32 @@
# DVB device configuration
#
config DVB_MMAP
bool "Enable DVB memory-mapped API (EXPERIMENTAL)"
depends on DVB_CORE
depends on VIDEO_V4L2=y || VIDEO_V4L2=DVB_CORE
select VIDEOBUF2_VMALLOC
help
This option enables DVB experimental memory-mapped API, which
reduces the number of context switches to read DVB buffers, as
the buffers can use mmap() syscalls.
Support for it is experimental. Use with care. If unsure,
say N.
config DVB_NET
bool "DVB Network Support"
default (NET && INET)
depends on NET && INET && DVB_CORE
help
This option enables DVB Network Support which is a part of the DVB
standard. It is used, for example, by automatic firmware updates used
on Set-Top-Boxes. It can also be used to access the Internet via the
DVB card, if the network provider supports it.
You may want to disable the network support on embedded devices. If
unsure say Y.
config DVB_MAX_ADAPTERS
int "maximum number of DVB/ATSC adapters"
depends on DVB_CORE
@@ -19,7 +45,7 @@ config DVB_MAX_ADAPTERS
config DVB_DYNAMIC_MINORS
bool "Dynamic DVB minor allocation"
depends on DVB_CORE
default n
default y
help
If you say Y here, the DVB subsystem will use dynamic minor
allocation for any device that uses the DVB major number.
@@ -32,7 +58,6 @@ config DVB_DYNAMIC_MINORS
config DVB_DEMUX_SECTION_LOSS_LOG
bool "Enable DVB demux section packet loss log"
depends on DVB_CORE
default n
help
Enable extra log messages meant to detect packet loss
inside the Kernel.
@@ -41,3 +66,15 @@ config DVB_DEMUX_SECTION_LOSS_LOG
be very verbose.
If you are unsure about this, say N here.
config DVB_ULE_DEBUG
bool "Enable DVB net ULE packet debug messages"
depends on DVB_CORE
help
Enable extra log messages meant to detect problems while
handling DVB network ULE packet loss inside the Kernel.
Should not be enabled on normal cases, as logs can
be very verbose.
If you are unsure about this, say N here.

9
dvb-core/Makefile
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@@ -3,11 +3,14 @@
# Makefile for the kernel DVB device drivers.
#
dvb-core-objs := dvbdev.o dmxdev.o dvb_demux.o dvb_filter.o \
dvb-net-$(CONFIG_DVB_NET) := dvb_net.o
dvb-vb2-$(CONFIG_DVB_MMAP) := dvb_vb2.o
dvb-core-objs := dvbdev.o dmxdev.o dvb_demux.o \
dvb_ca_en50221.o dvb_frontend.o \
dvb_net.o dvb_ringbuffer.o dvb_math.o
$(dvb-net-y) dvb_ringbuffer.o $(dvb-vb2-y) dvb_math.o
obj-$(CONFIG_DVB_CORE) += dvb-core.o
EXTRA_CFLAGS += -DCONFIG_DVB_DYNAMIC_MINORS -DCONFIG_DVB_NET
NOSTDINC_FLAGS += -I$(KBUILD_EXTMOD)/include -I$(KBUILD_EXTMOD)/dvb-core
#NOSTDINC_FLAGS += -I$(KBUILD_EXTMOD)/include -I$(KBUILD_EXTMOD)/include/linux

2
dvb-core/Makefile.kernel
View File

@@ -9,3 +9,5 @@ dvb-core-objs := dvbdev.o dmxdev.o dvb_demux.o dvb_filter.o \
$(dvb-net-y) dvb_ringbuffer.o dvb_math.o
obj-$(CONFIG_DVB_CORE) += dvb-core.o
ccflags-y += -Idrivers/media/dvb-core/

589
dvb-core/demux.h
View File

@@ -1,589 +0,0 @@
/*
* demux.h
*
* The Kernel Digital TV Demux kABI defines a driver-internal interface for
* registering low-level, hardware specific driver to a hardware independent
* demux layer.
*
* Copyright (c) 2002 Convergence GmbH
*
* based on code:
* Copyright (c) 2000 Nokia Research Center
* Tampere, FINLAND
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
*
*/
#ifndef __DEMUX_H
#define __DEMUX_H
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/time.h>
#include <linux/dvb/dmx.h>
/*
* Common definitions
*/
/*
* DMX_MAX_FILTER_SIZE: Maximum length (in bytes) of a section/PES filter.
*/
#ifndef DMX_MAX_FILTER_SIZE
#define DMX_MAX_FILTER_SIZE 18
#endif
/*
* DMX_MAX_SECFEED_SIZE: Maximum length (in bytes) of a private section feed
* filter.
*/
#ifndef DMX_MAX_SECTION_SIZE
#define DMX_MAX_SECTION_SIZE 4096
#endif
#ifndef DMX_MAX_SECFEED_SIZE
#define DMX_MAX_SECFEED_SIZE (DMX_MAX_SECTION_SIZE + 188)
#endif
/*
* TS packet reception
*/
/**
* enum ts_filter_type - filter type bitmap for dmx_ts_feed.set\(\)
*
* @TS_PACKET: Send TS packets (188 bytes) to callback (default).
* @TS_PAYLOAD_ONLY: In case TS_PACKET is set, only send the TS payload
* (<=184 bytes per packet) to callback
* @TS_DECODER: Send stream to built-in decoder (if present).
* @TS_DEMUX: In case TS_PACKET is set, send the TS to the demux
* device, not to the dvr device
*/
enum ts_filter_type {
TS_PACKET = 1,
TS_PAYLOAD_ONLY = 2,
TS_DECODER = 4,
TS_DEMUX = 8,
};
/**
* struct dmx_ts_feed - Structure that contains a TS feed filter
*
* @is_filtering: Set to non-zero when filtering in progress
* @parent: pointer to struct dmx_demux
* @priv: pointer to private data of the API client
* @set: sets the TS filter
* @start_filtering: starts TS filtering
* @stop_filtering: stops TS filtering
*
* A TS feed is typically mapped to a hardware PID filter on the demux chip.
* Using this API, the client can set the filtering properties to start/stop
* filtering TS packets on a particular TS feed.
*/
struct dmx_ts_feed {
int is_filtering;
struct dmx_demux *parent;
void *priv;
int (*set)(struct dmx_ts_feed *feed,
u16 pid,
int type,
enum dmx_ts_pes pes_type,
ktime_t timeout);
int (*start_filtering)(struct dmx_ts_feed *feed);
int (*stop_filtering)(struct dmx_ts_feed *feed);
};
/*
* Section reception
*/
/**
* struct dmx_section_filter - Structure that describes a section filter
*
* @filter_value: Contains up to 16 bytes (128 bits) of the TS section header
* that will be matched by the section filter
* @filter_mask: Contains a 16 bytes (128 bits) filter mask with the bits
* specified by @filter_value that will be used on the filter
* match logic.
* @filter_mode: Contains a 16 bytes (128 bits) filter mode.
* @parent: Pointer to struct dmx_section_feed.
* @priv: Pointer to private data of the API client.
*
*
* The @filter_mask controls which bits of @filter_value are compared with
* the section headers/payload. On a binary value of 1 in filter_mask, the
* corresponding bits are compared. The filter only accepts sections that are
* equal to filter_value in all the tested bit positions.
*/
struct dmx_section_filter {
u8 filter_value[DMX_MAX_FILTER_SIZE];
u8 filter_mask[DMX_MAX_FILTER_SIZE];
u8 filter_mode[DMX_MAX_FILTER_SIZE];
struct dmx_section_feed *parent; /* Back-pointer */
void *priv; /* Pointer to private data of the API client */
};
/**
* struct dmx_section_feed - Structure that contains a section feed filter
*
* @is_filtering: Set to non-zero when filtering in progress
* @parent: pointer to struct dmx_demux
* @priv: pointer to private data of the API client
* @check_crc: If non-zero, check the CRC values of filtered sections.
* @set: sets the section filter
* @allocate_filter: This function is used to allocate a section filter on
* the demux. It should only be called when no filtering
* is in progress on this section feed. If a filter cannot
* be allocated, the function fails with -ENOSPC.
* @release_filter: This function releases all the resources of a
* previously allocated section filter. The function
* should not be called while filtering is in progress
* on this section feed. After calling this function,
* the caller should not try to dereference the filter
* pointer.
* @start_filtering: starts section filtering
* @stop_filtering: stops section filtering
*
* A TS feed is typically mapped to a hardware PID filter on the demux chip.
* Using this API, the client can set the filtering properties to start/stop
* filtering TS packets on a particular TS feed.
*/
struct dmx_section_feed {
int is_filtering;
struct dmx_demux *parent;
void *priv;
int check_crc;
/* private: Used internally at dvb_demux.c */
u32 crc_val;
u8 *secbuf;
u8 secbuf_base[DMX_MAX_SECFEED_SIZE];
u16 secbufp, seclen, tsfeedp;
/* public: */
int (*set)(struct dmx_section_feed *feed,
u16 pid,
int check_crc);
int (*allocate_filter)(struct dmx_section_feed *feed,
struct dmx_section_filter **filter);
int (*release_filter)(struct dmx_section_feed *feed,
struct dmx_section_filter *filter);
int (*start_filtering)(struct dmx_section_feed *feed);
int (*stop_filtering)(struct dmx_section_feed *feed);
};
/**
* typedef dmx_ts_cb - DVB demux TS filter callback function prototype
*
* @buffer1: Pointer to the start of the filtered TS packets.
* @buffer1_length: Length of the TS data in buffer1.
* @buffer2: Pointer to the tail of the filtered TS packets, or NULL.
* @buffer2_length: Length of the TS data in buffer2.
* @source: Indicates which TS feed is the source of the callback.
*
* This function callback prototype, provided by the client of the demux API,
* is called from the demux code. The function is only called when filtering
* on a TS feed has been enabled using the start_filtering\(\) function at
* the &dmx_demux.
* Any TS packets that match the filter settings are copied to a circular
* buffer. The filtered TS packets are delivered to the client using this
* callback function.
* It is expected that the @buffer1 and @buffer2 callback parameters point to
* addresses within the circular buffer, but other implementations are also
* possible. Note that the called party should not try to free the memory
* the @buffer1 and @buffer2 parameters point to.
*
* When this function is called, the @buffer1 parameter typically points to
* the start of the first undelivered TS packet within a circular buffer.
* The @buffer2 buffer parameter is normally NULL, except when the received
* TS packets have crossed the last address of the circular buffer and
* "wrapped" to the beginning of the buffer. In the latter case the @buffer1
* parameter would contain an address within the circular buffer, while the
* @buffer2 parameter would contain the first address of the circular buffer.
* The number of bytes delivered with this function (i.e. @buffer1_length +
* @buffer2_length) is usually equal to the value of callback_length parameter
* given in the set() function, with one exception: if a timeout occurs before
* receiving callback_length bytes of TS data, any undelivered packets are
* immediately delivered to the client by calling this function. The timeout
* duration is controlled by the set() function in the TS Feed API.
*
* If a TS packet is received with errors that could not be fixed by the
* TS-level forward error correction (FEC), the Transport_error_indicator
* flag of the TS packet header should be set. The TS packet should not be
* discarded, as the error can possibly be corrected by a higher layer
* protocol. If the called party is slow in processing the callback, it
* is possible that the circular buffer eventually fills up. If this happens,
* the demux driver should discard any TS packets received while the buffer
* is full and return -EOVERFLOW.
*
* The type of data returned to the callback can be selected by the
* &dmx_ts_feed.@set function. The type parameter decides if the raw
* TS packet (TS_PACKET) or just the payload (TS_PACKET|TS_PAYLOAD_ONLY)
* should be returned. If additionally the TS_DECODER bit is set the stream
* will also be sent to the hardware MPEG decoder.
*
* Return:
*
* - 0, on success;
*
* - -EOVERFLOW, on buffer overflow.
*/
typedef int (*dmx_ts_cb)(const u8 *buffer1,
size_t buffer1_length,
const u8 *buffer2,
size_t buffer2_length,
struct dmx_ts_feed *source);
/**
* typedef dmx_section_cb - DVB demux TS filter callback function prototype
*
* @buffer1: Pointer to the start of the filtered section, e.g.
* within the circular buffer of the demux driver.
* @buffer1_len: Length of the filtered section data in @buffer1,
* including headers and CRC.
* @buffer2: Pointer to the tail of the filtered section data,
* or NULL. Useful to handle the wrapping of a
* circular buffer.
* @buffer2_len: Length of the filtered section data in @buffer2,
* including headers and CRC.
* @source: Indicates which section feed is the source of the
* callback.
*
* This function callback prototype, provided by the client of the demux API,
* is called from the demux code. The function is only called when
* filtering of sections has been enabled using the function
* &dmx_ts_feed.@start_filtering. When the demux driver has received a
* complete section that matches at least one section filter, the client
* is notified via this callback function. Normally this function is called
* for each received section; however, it is also possible to deliver
* multiple sections with one callback, for example when the system load
* is high. If an error occurs while receiving a section, this
* function should be called with the corresponding error type set in the
* success field, whether or not there is data to deliver. The Section Feed
* implementation should maintain a circular buffer for received sections.
* However, this is not necessary if the Section Feed API is implemented as
* a client of the TS Feed API, because the TS Feed implementation then
* buffers the received data. The size of the circular buffer can be
* configured using the &dmx_ts_feed.@set function in the Section Feed API.
* If there is no room in the circular buffer when a new section is received,
* the section must be discarded. If this happens, the value of the success
* parameter should be DMX_OVERRUN_ERROR on the next callback.
*/
typedef int (*dmx_section_cb)(const u8 *buffer1,
size_t buffer1_len,
const u8 *buffer2,
size_t buffer2_len,
struct dmx_section_filter *source);
/*
* DVB Front-End
*/
/**
* enum dmx_frontend_source - Used to identify the type of frontend
*
* @DMX_MEMORY_FE: The source of the demux is memory. It means that
* the MPEG-TS to be filtered comes from userspace,
* via write() syscall.
*
* @DMX_FRONTEND_0: The source of the demux is a frontend connected
* to the demux.
*/
enum dmx_frontend_source {
DMX_MEMORY_FE,
DMX_FRONTEND_0,
};
/**
* struct dmx_frontend - Structure that lists the frontends associated with
* a demux
*
* @connectivity_list: List of front-ends that can be connected to a
* particular demux;
* @source: Type of the frontend.
*
* FIXME: this structure should likely be replaced soon by some
* media-controller based logic.
*/
struct dmx_frontend {
struct list_head connectivity_list;
enum dmx_frontend_source source;
};
/*
* MPEG-2 TS Demux
*/
/**
* enum dmx_demux_caps - MPEG-2 TS Demux capabilities bitmap
*
* @DMX_TS_FILTERING: set if TS filtering is supported;
* @DMX_SECTION_FILTERING: set if section filtering is supported;
* @DMX_MEMORY_BASED_FILTERING: set if write() available.
*
* Those flags are OR'ed in the &dmx_demux.capabilities field
*/
enum dmx_demux_caps {
DMX_TS_FILTERING = 1,
DMX_SECTION_FILTERING = 4,
DMX_MEMORY_BASED_FILTERING = 8,
};
/*
* Demux resource type identifier.
*/
/**
* DMX_FE_ENTRY - Casts elements in the list of registered
* front-ends from the generic type struct list_head
* to the type * struct dmx_frontend
*
* @list: list of struct dmx_frontend
*/
#define DMX_FE_ENTRY(list) \
list_entry(list, struct dmx_frontend, connectivity_list)
/**
* struct dmx_demux - Structure that contains the demux capabilities and
* callbacks.
*
* @capabilities: Bitfield of capability flags.
*
* @frontend: Front-end connected to the demux
*
* @priv: Pointer to private data of the API client
*
* @open: This function reserves the demux for use by the caller and, if
* necessary, initializes the demux. When the demux is no longer needed,
* the function @close should be called. It should be possible for
* multiple clients to access the demux at the same time. Thus, the
* function implementation should increment the demux usage count when
* @open is called and decrement it when @close is called.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* It returns:
* 0 on success;
* -EUSERS, if maximum usage count was reached;
* -EINVAL, on bad parameter.
*
* @close: This function reserves the demux for use by the caller and, if
* necessary, initializes the demux. When the demux is no longer needed,
* the function @close should be called. It should be possible for
* multiple clients to access the demux at the same time. Thus, the
* function implementation should increment the demux usage count when
* @open is called and decrement it when @close is called.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* It returns:
* 0 on success;
* -ENODEV, if demux was not in use (e. g. no users);
* -EINVAL, on bad parameter.
*
* @write: This function provides the demux driver with a memory buffer
* containing TS packets. Instead of receiving TS packets from the DVB
* front-end, the demux driver software will read packets from memory.
* Any clients of this demux with active TS, PES or Section filters will
* receive filtered data via the Demux callback API (see 0). The function
* returns when all the data in the buffer has been consumed by the demux.
* Demux hardware typically cannot read TS from memory. If this is the
* case, memory-based filtering has to be implemented entirely in software.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* The @buf function parameter contains a pointer to the TS data in
* kernel-space memory.
* The @count function parameter contains the length of the TS data.
* It returns:
* 0 on success;
* -ERESTARTSYS, if mutex lock was interrupted;
* -EINTR, if a signal handling is pending;
* -ENODEV, if demux was removed;
* -EINVAL, on bad parameter.
*
* @allocate_ts_feed: Allocates a new TS feed, which is used to filter the TS
* packets carrying a certain PID. The TS feed normally corresponds to a
* hardware PID filter on the demux chip.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* The @feed function parameter contains a pointer to the TS feed API and
* instance data.
* The @callback function parameter contains a pointer to the callback
* function for passing received TS packet.
* It returns:
* 0 on success;
* -ERESTARTSYS, if mutex lock was interrupted;
* -EBUSY, if no more TS feeds is available;
* -EINVAL, on bad parameter.
*
* @release_ts_feed: Releases the resources allocated with @allocate_ts_feed.
* Any filtering in progress on the TS feed should be stopped before
* calling this function.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* The @feed function parameter contains a pointer to the TS feed API and
* instance data.
* It returns:
* 0 on success;
* -EINVAL on bad parameter.
*
* @allocate_section_feed: Allocates a new section feed, i.e. a demux resource
* for filtering and receiving sections. On platforms with hardware
* support for section filtering, a section feed is directly mapped to
* the demux HW. On other platforms, TS packets are first PID filtered in
* hardware and a hardware section filter then emulated in software. The
* caller obtains an API pointer of type dmx_section_feed_t as an out
* parameter. Using this API the caller can set filtering parameters and
* start receiving sections.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* The @feed function parameter contains a pointer to the TS feed API and
* instance data.
* The @callback function parameter contains a pointer to the callback
* function for passing received TS packet.
* It returns:
* 0 on success;
* -EBUSY, if no more TS feeds is available;
* -EINVAL, on bad parameter.
*
* @release_section_feed: Releases the resources allocated with
* @allocate_section_feed, including allocated filters. Any filtering in
* progress on the section feed should be stopped before calling this
* function.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* The @feed function parameter contains a pointer to the TS feed API and
* instance data.
* It returns:
* 0 on success;
* -EINVAL, on bad parameter.
*
* @add_frontend: Registers a connectivity between a demux and a front-end,
* i.e., indicates that the demux can be connected via a call to
* @connect_frontend to use the given front-end as a TS source. The
* client of this function has to allocate dynamic or static memory for
* the frontend structure and initialize its fields before calling this
* function. This function is normally called during the driver
* initialization. The caller must not free the memory of the frontend
* struct before successfully calling @remove_frontend.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* The @frontend function parameter contains a pointer to the front-end
* instance data.
* It returns:
* 0 on success;
* -EINVAL, on bad parameter.
*
* @remove_frontend: Indicates that the given front-end, registered by a call
* to @add_frontend, can no longer be connected as a TS source by this
* demux. The function should be called when a front-end driver or a demux
* driver is removed from the system. If the front-end is in use, the
* function fails with the return value of -EBUSY. After successfully
* calling this function, the caller can free the memory of the frontend
* struct if it was dynamically allocated before the @add_frontend
* operation.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* The @frontend function parameter contains a pointer to the front-end
* instance data.
* It returns:
* 0 on success;
* -ENODEV, if the front-end was not found,
* -EINVAL, on bad parameter.
*
* @get_frontends: Provides the APIs of the front-ends that have been
* registered for this demux. Any of the front-ends obtained with this
* call can be used as a parameter for @connect_frontend. The include
* file demux.h contains the macro DMX_FE_ENTRY() for converting an
* element of the generic type struct &list_head * to the type
* struct &dmx_frontend *. The caller must not free the memory of any of
* the elements obtained via this function call.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* It returns a struct list_head pointer to the list of front-end
* interfaces, or NULL in the case of an empty list.
*
* @connect_frontend: Connects the TS output of the front-end to the input of
* the demux. A demux can only be connected to a front-end registered to
* the demux with the function @add_frontend. It may or may not be
* possible to connect multiple demuxes to the same front-end, depending
* on the capabilities of the HW platform. When not used, the front-end
* should be released by calling @disconnect_frontend.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* The @frontend function parameter contains a pointer to the front-end
* instance data.
* It returns:
* 0 on success;
* -EINVAL, on bad parameter.
*
* @disconnect_frontend: Disconnects the demux and a front-end previously
* connected by a @connect_frontend call.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* It returns:
* 0 on success;
* -EINVAL on bad parameter.
*
* @get_pes_pids: Get the PIDs for DMX_PES_AUDIO0, DMX_PES_VIDEO0,
* DMX_PES_TELETEXT0, DMX_PES_SUBTITLE0 and DMX_PES_PCR0.
* The @demux function parameter contains a pointer to the demux API and
* instance data.
* The @pids function parameter contains an array with five u16 elements
* where the PIDs will be stored.
* It returns:
* 0 on success;
* -EINVAL on bad parameter.
*/
struct dmx_demux {
enum dmx_demux_caps capabilities;
struct dmx_frontend *frontend;
void *priv;
int (*open)(struct dmx_demux *demux);
int (*close)(struct dmx_demux *demux);
int (*write)(struct dmx_demux *demux, const char __user *buf,
size_t count);
int (*allocate_ts_feed)(struct dmx_demux *demux,
struct dmx_ts_feed **feed,
dmx_ts_cb callback);
int (*release_ts_feed)(struct dmx_demux *demux,
struct dmx_ts_feed *feed);
int (*allocate_section_feed)(struct dmx_demux *demux,
struct dmx_section_feed **feed,
dmx_section_cb callback);
int (*release_section_feed)(struct dmx_demux *demux,
struct dmx_section_feed *feed);
int (*add_frontend)(struct dmx_demux *demux,
struct dmx_frontend *frontend);
int (*remove_frontend)(struct dmx_demux *demux,
struct dmx_frontend *frontend);
struct list_head *(*get_frontends)(struct dmx_demux *demux);
int (*connect_frontend)(struct dmx_demux *demux,
struct dmx_frontend *frontend);
int (*disconnect_frontend)(struct dmx_demux *demux);
int (*get_pes_pids)(struct dmx_demux *demux, u16 *pids);
/* private: */
/*
* Only used at av7110, to read some data from firmware.
* As this was never documented, we have no clue about what's
* there, and its usage on other drivers aren't encouraged.
*/
int (*get_stc)(struct dmx_demux *demux, unsigned int num,
u64 *stc, unsigned int *base);
};
#endif /* #ifndef __DEMUX_H */

324
dvb-core/dmxdev.c
View File

@@ -18,6 +18,7 @@
#define pr_fmt(fmt) "dmxdev: " fmt
#include <linux/version.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
@@ -27,8 +28,10 @@
#include <linux/ioctl.h>
#include <linux/wait.h>
#include <linux/uaccess.h>
#include <linux/version.h>
#include "dmxdev.h"
#include <media/dmxdev.h>
#ifdef CONFIG_DVB_MMAP
#include <media/dvb_vb2.h>
#endif
static int debug;
@@ -128,6 +131,7 @@ static int dvb_dvr_open(struct inode *inode, struct file *file)
struct dvb_device *dvbdev = file->private_data;
struct dmxdev *dmxdev = dvbdev->priv;
struct dmx_frontend *front;
bool need_ringbuffer = false;
dprintk("%s\n", __func__);
@@ -139,14 +143,33 @@ static int dvb_dvr_open(struct inode *inode, struct file *file)
return -ENODEV;
}
if ((file->f_flags & O_ACCMODE) == O_RDWR) {
dmxdev->may_do_mmap = 0;
/*
* The logic here is a little tricky due to the ifdef.
*
* The ringbuffer is used for both read and mmap.
*
* It is not needed, however, on two situations:
* - Write devices (access with O_WRONLY);
* - For duplex device nodes, opened with O_RDWR.
*/
if ((file->f_flags & O_ACCMODE) == O_RDONLY)
need_ringbuffer = true;
else if ((file->f_flags & O_ACCMODE) == O_RDWR) {
if (!(dmxdev->capabilities & DMXDEV_CAP_DUPLEX)) {
#ifdef CONFIG_DVB_MMAP
dmxdev->may_do_mmap = 1;
need_ringbuffer = true;
#else
mutex_unlock(&dmxdev->mutex);
return -EOPNOTSUPP;
#endif
}
}
if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
if (need_ringbuffer) {
void *mem;
if (!dvbdev->readers) {
@@ -159,6 +182,11 @@ static int dvb_dvr_open(struct inode *inode, struct file *file)
return -ENOMEM;
}
dvb_ringbuffer_init(&dmxdev->dvr_buffer, mem, DVR_BUFFER_SIZE);
#ifdef CONFIG_DVB_MMAP
if (dmxdev->may_do_mmap)
dvb_vb2_init(&dmxdev->dvr_vb2_ctx, "dvr",
file->f_flags & O_NONBLOCK);
#endif
dvbdev->readers--;
}
@@ -196,7 +224,15 @@ static int dvb_dvr_release(struct inode *inode, struct file *file)
dmxdev->demux->connect_frontend(dmxdev->demux,
dmxdev->dvr_orig_fe);
}
if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
if (((file->f_flags & O_ACCMODE) == O_RDONLY) ||
dmxdev->may_do_mmap) {
#ifdef CONFIG_DVB_MMAP
if (dmxdev->may_do_mmap) {
if (dvb_vb2_is_streaming(&dmxdev->dvr_vb2_ctx))
dvb_vb2_stream_off(&dmxdev->dvr_vb2_ctx);
dvb_vb2_release(&dmxdev->dvr_vb2_ctx);
}
#endif
dvbdev->readers++;
if (dmxdev->dvr_buffer.data) {
void *mem = dmxdev->dvr_buffer.data;
@@ -381,12 +417,18 @@ static void dvb_dmxdev_filter_timer(struct dmxdev_filter *dmxdevfilter)
#endif
static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
const u8 *buffer2, size_t buffer2_len,
struct dmx_section_filter *filter)
struct dmx_section_filter *filter,
u32 *buffer_flags)
{
struct dmxdev_filter *dmxdevfilter = filter->priv;
int ret;
#ifdef CONFIG_DVB_MMAP
if (!dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx) &&
dmxdevfilter->buffer.error) {
#else
if (dmxdevfilter->buffer.error) {
#endif
wake_up(&dmxdevfilter->buffer.queue);
return 0;
}
@@ -397,12 +439,31 @@ static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
}
del_timer(&dmxdevfilter->timer);
dprintk("section callback %*ph\n", 6, buffer1);
#ifdef CONFIG_DVB_MMAP
if (dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx)) {
ret = dvb_vb2_fill_buffer(&dmxdevfilter->vb2_ctx,
buffer1, buffer1_len,
buffer_flags);
if (ret == buffer1_len)
ret = dvb_vb2_fill_buffer(&dmxdevfilter->vb2_ctx,
buffer2, buffer2_len,
buffer_flags);
} else {
ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer,
buffer1, buffer1_len);
if (ret == buffer1_len) {
ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer,
buffer2, buffer2_len);
}
}
#else
ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer1,
buffer1_len);
if (ret == buffer1_len) {
ret = dvb_dmxdev_buffer_write(&dmxdevfilter->buffer, buffer2,
buffer2_len);
}
#endif
if (ret < 0)
dmxdevfilter->buffer.error = ret;
if (dmxdevfilter->params.sec.flags & DMX_ONESHOT)
@@ -414,7 +475,8 @@ static int dvb_dmxdev_section_callback(const u8 *buffer1, size_t buffer1_len,
static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
const u8 *buffer2, size_t buffer2_len,
struct dmx_ts_feed *feed)
struct dmx_ts_feed *feed,
u32 *buffer_flags)
{
struct dmxdev_filter *dmxdevfilter = feed->priv;
struct dvb_ringbuffer *buffer;
@@ -426,19 +488,40 @@ static int dvb_dmxdev_ts_callback(const u8 *buffer1, size_t buffer1_len,
return 0;
}
if (dmxdevfilter->params.pes.output == DMX_OUT_TAP
|| dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP)
if (dmxdevfilter->params.pes.output == DMX_OUT_TAP ||
dmxdevfilter->params.pes.output == DMX_OUT_TSDEMUX_TAP) {
buffer = &dmxdevfilter->buffer;
else
#ifdef CONFIG_DVB_MMAP
ctx = &dmxdevfilter->vb2_ctx;
#endif
} else {
buffer = &dmxdevfilter->dev->dvr_buffer;
if (buffer->error) {
spin_unlock(&dmxdevfilter->dev->lock);
wake_up(&buffer->queue);
return 0;
#ifdef CONFIG_DVB_MMAP
ctx = &dmxdevfilter->dev->dvr_vb2_ctx;
#endif
}
ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
if (ret == buffer1_len)
ret = dvb_dmxdev_buffer_write(buffer, buffer2, buffer2_len);
#ifdef CONFIG_DVB_MMAP
if (dvb_vb2_is_streaming(ctx)) {
ret = dvb_vb2_fill_buffer(ctx, buffer1, buffer1_len,
buffer_flags);
if (ret == buffer1_len)
ret = dvb_vb2_fill_buffer(ctx, buffer2, buffer2_len,
buffer_flags);
} else {
#endif
if (buffer->error) {
spin_unlock(&dmxdevfilter->dev->lock);
wake_up(&buffer->queue);
return 0;
}
ret = dvb_dmxdev_buffer_write(buffer, buffer1, buffer1_len);
if (ret == buffer1_len)
ret = dvb_dmxdev_buffer_write(buffer,
buffer2, buffer2_len);
#ifdef CONFIG_DVB_MMAP
}
#endif
if (ret < 0)
buffer->error = ret;
spin_unlock(&dmxdevfilter->dev->lock);
@@ -585,7 +668,7 @@ static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev,
struct dmxdev_filter *filter,
struct dmxdev_feed *feed)
{
ktime_t timeout;
ktime_t timeout = ktime_set(0, 0);
struct dmx_pes_filter_params *para = &filter->params.pes;
enum dmx_output otype;
int ret;
@@ -593,7 +676,6 @@ static int dvb_dmxdev_start_feed(struct dmxdev *dmxdev,
enum dmx_ts_pes ts_pes;
struct dmx_ts_feed *tsfeed;
timeout = ktime_set(0, 0);
feed->ts = NULL;
otype = para->output;
@@ -777,7 +859,17 @@ static int dvb_demux_open(struct inode *inode, struct file *file)
mutex_init(&dmxdevfilter->mutex);
file->private_data = dmxdevfilter;
#ifdef CONFIG_DVB_MMAP
dmxdev->may_do_mmap = 1;
#else
dmxdev->may_do_mmap = 0;
#endif
dvb_ringbuffer_init(&dmxdevfilter->buffer, NULL, 8192);
#ifdef CONFIG_DVB_MMAP
dvb_vb2_init(&dmxdevfilter->vb2_ctx, "demux_filter",
file->f_flags & O_NONBLOCK);
#endif
dmxdevfilter->type = DMXDEV_TYPE_NONE;
dvb_dmxdev_filter_state_set(dmxdevfilter, DMXDEV_STATE_ALLOCATED);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 15, 0))
@@ -797,6 +889,11 @@ static int dvb_dmxdev_filter_free(struct dmxdev *dmxdev,
{
mutex_lock(&dmxdev->mutex);
mutex_lock(&dmxdevfilter->mutex);
#ifdef CONFIG_DVB_MMAP
if (dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx))
dvb_vb2_stream_off(&dmxdevfilter->vb2_ctx);
dvb_vb2_release(&dmxdevfilter->vb2_ctx);
#endif
dvb_dmxdev_filter_stop(dmxdevfilter);
dvb_dmxdev_filter_reset(dmxdevfilter);
@@ -1084,8 +1181,56 @@ static int dvb_demux_do_ioctl(struct file *file,
mutex_unlock(&dmxdevfilter->mutex);
break;
#ifdef CONFIG_DVB_MMAP
case DMX_REQBUFS:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_vb2_reqbufs(&dmxdevfilter->vb2_ctx, parg);
mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_QUERYBUF:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_vb2_querybuf(&dmxdevfilter->vb2_ctx, parg);
mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_EXPBUF:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_vb2_expbuf(&dmxdevfilter->vb2_ctx, parg);
mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_QBUF:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_vb2_qbuf(&dmxdevfilter->vb2_ctx, parg);
if (ret == 0 && !dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx))
ret = dvb_vb2_stream_on(&dmxdevfilter->vb2_ctx);
mutex_unlock(&dmxdevfilter->mutex);
break;
case DMX_DQBUF:
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_vb2_dqbuf(&dmxdevfilter->vb2_ctx, parg);
mutex_unlock(&dmxdevfilter->mutex);
break;
#endif
default:
ret = -EINVAL;
ret = -ENOTTY;
break;
}
mutex_unlock(&dmxdev->mutex);
@@ -1098,30 +1243,70 @@ static long dvb_demux_ioctl(struct file *file, unsigned int cmd,
return dvb_usercopy(file, cmd, arg, dvb_demux_do_ioctl);
}
static unsigned int dvb_demux_poll(struct file *file, poll_table *wait)
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 16, 0))
typedef unsigned int __poll_t;
#define EPOLLIN POLLIN
#define EPOLLERR POLLERR
#define EPOLLPRI POLLPRI
#define EPOLLRDNORM POLLRDNORM
#define EPOLLWRNORM POLLWRNORM
#define EPOLLOUT POLLOUT
#endif
static __poll_t dvb_demux_poll(struct file *file, poll_table *wait)
{
struct dmxdev_filter *dmxdevfilter = file->private_data;
unsigned int mask = 0;
if ((!dmxdevfilter) || dmxdevfilter->dev->exit)
return POLLERR;
__poll_t mask = 0;
poll_wait(file, &dmxdevfilter->buffer.queue, wait);
if ((!dmxdevfilter) || dmxdevfilter->dev->exit)
return EPOLLERR;
#ifdef CONFIG_DVB_MMAP
if (dvb_vb2_is_streaming(&dmxdevfilter->vb2_ctx))
return dvb_vb2_poll(&dmxdevfilter->vb2_ctx, file, wait);
#endif
if (dmxdevfilter->state != DMXDEV_STATE_GO &&
dmxdevfilter->state != DMXDEV_STATE_DONE &&
dmxdevfilter->state != DMXDEV_STATE_TIMEDOUT)
return 0;
if (dmxdevfilter->buffer.error)
mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI | EPOLLERR);
if (!dvb_ringbuffer_empty(&dmxdevfilter->buffer))
mask |= (POLLIN | POLLRDNORM | POLLPRI);
mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI);
return mask;
}
#ifdef CONFIG_DVB_MMAP
static int dvb_demux_mmap(struct file *file, struct vm_area_struct *vma)
{
struct dmxdev_filter *dmxdevfilter = file->private_data;
struct dmxdev *dmxdev = dmxdevfilter->dev;
int ret;
if (!dmxdev->may_do_mmap)
return -ENOTTY;
if (mutex_lock_interruptible(&dmxdev->mutex))
return -ERESTARTSYS;
if (mutex_lock_interruptible(&dmxdevfilter->mutex)) {
mutex_unlock(&dmxdev->mutex);
return -ERESTARTSYS;
}
ret = dvb_vb2_mmap(&dmxdevfilter->vb2_ctx, vma);
mutex_unlock(&dmxdevfilter->mutex);
mutex_unlock(&dmxdev->mutex);
return ret;
}
#endif
static int dvb_demux_release(struct inode *inode, struct file *file)
{
struct dmxdev_filter *dmxdevfilter = file->private_data;
@@ -1146,10 +1331,14 @@ static const struct file_operations dvb_demux_fops = {
.owner = THIS_MODULE,
.read = dvb_demux_read,
.unlocked_ioctl = dvb_demux_ioctl,
.compat_ioctl = dvb_demux_ioctl,
.open = dvb_demux_open,
.release = dvb_demux_release,
.poll = dvb_demux_poll,
.llseek = default_llseek,
#ifdef CONFIG_DVB_MMAP
.mmap = dvb_demux_mmap,
#endif
};
static const struct dvb_device dvbdev_demux = {
@@ -1178,8 +1367,31 @@ static int dvb_dvr_do_ioctl(struct file *file,
ret = dvb_dvr_set_buffer_size(dmxdev, arg);
break;
#ifdef CONFIG_DVB_MMAP
case DMX_REQBUFS:
ret = dvb_vb2_reqbufs(&dmxdev->dvr_vb2_ctx, parg);
break;
case DMX_QUERYBUF:
ret = dvb_vb2_querybuf(&dmxdev->dvr_vb2_ctx, parg);
break;
case DMX_EXPBUF:
ret = dvb_vb2_expbuf(&dmxdev->dvr_vb2_ctx, parg);
break;
case DMX_QBUF:
ret = dvb_vb2_qbuf(&dmxdev->dvr_vb2_ctx, parg);
if (ret == 0 && !dvb_vb2_is_streaming(&dmxdev->dvr_vb2_ctx))
ret = dvb_vb2_stream_on(&dmxdev->dvr_vb2_ctx);
break;
case DMX_DQBUF:
ret = dvb_vb2_dqbuf(&dmxdev->dvr_vb2_ctx, parg);
break;
#endif
default:
ret = -EINVAL;
ret = -ENOTTY;
break;
}
mutex_unlock(&dmxdev->mutex);
@@ -1192,31 +1404,58 @@ static long dvb_dvr_ioctl(struct file *file,
return dvb_usercopy(file, cmd, arg, dvb_dvr_do_ioctl);
}
static unsigned int dvb_dvr_poll(struct file *file, poll_table *wait)
static __poll_t dvb_dvr_poll(struct file *file, poll_table *wait)
{
struct dvb_device *dvbdev = file->private_data;
struct dmxdev *dmxdev = dvbdev->priv;
unsigned int mask = 0;
__poll_t mask = 0;
dprintk("%s\n", __func__);
if (dmxdev->exit)
return POLLERR;
poll_wait(file, &dmxdev->dvr_buffer.queue, wait);
if ((file->f_flags & O_ACCMODE) == O_RDONLY) {
if (dmxdev->exit)
return EPOLLERR;
#ifdef CONFIG_DVB_MMAP
if (dvb_vb2_is_streaming(&dmxdev->dvr_vb2_ctx))
return dvb_vb2_poll(&dmxdev->dvr_vb2_ctx, file, wait);
#endif
if (((file->f_flags & O_ACCMODE) == O_RDONLY) ||
dmxdev->may_do_mmap) {
if (dmxdev->dvr_buffer.error)
mask |= (POLLIN | POLLRDNORM | POLLPRI | POLLERR);
mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI | EPOLLERR);
if (!dvb_ringbuffer_empty(&dmxdev->dvr_buffer))
mask |= (POLLIN | POLLRDNORM | POLLPRI);
mask |= (EPOLLIN | EPOLLRDNORM | EPOLLPRI);
} else
mask |= (POLLOUT | POLLWRNORM | POLLPRI);
mask |= (EPOLLOUT | EPOLLWRNORM | EPOLLPRI);
return mask;
}
#ifdef CONFIG_DVB_MMAP
static int dvb_dvr_mmap(struct file *file, struct vm_area_struct *vma)
{
struct dvb_device *dvbdev = file->private_data;
struct dmxdev *dmxdev = dvbdev->priv;
int ret;
if (!dmxdev->may_do_mmap)
return -ENOTTY;
if (dmxdev->exit)
return -ENODEV;
if (mutex_lock_interruptible(&dmxdev->mutex))
return -ERESTARTSYS;
ret = dvb_vb2_mmap(&dmxdev->dvr_vb2_ctx, vma);
mutex_unlock(&dmxdev->mutex);
return ret;
}
#endif
static const struct file_operations dvb_dvr_fops = {
.owner = THIS_MODULE,
.read = dvb_dvr_read,
@@ -1226,6 +1465,9 @@ static const struct file_operations dvb_dvr_fops = {
.release = dvb_dvr_release,
.poll = dvb_dvr_poll,
.llseek = default_llseek,
#ifdef CONFIG_DVB_MMAP
.mmap = dvb_dvr_mmap,
#endif
};
static const struct dvb_device dvbdev_dvr = {
@@ -1237,6 +1479,7 @@ static const struct dvb_device dvbdev_dvr = {
#endif
.fops = &dvb_dvr_fops
};
int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
{
int i;
@@ -1244,7 +1487,12 @@ int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter)
if (dmxdev->demux->open(dmxdev->demux) < 0)
return -EUSERS;
dmxdev->filter = vmalloc(dmxdev->filternum * sizeof(struct dmxdev_filter));
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0))
dmxdev->filter = vmalloc(sizeof(struct dmxdev_filter) * dmxdev->filternum);
#else
dmxdev->filter = vmalloc(array_size(sizeof(struct dmxdev_filter),
dmxdev->filternum));
#endif
if (!dmxdev->filter)
return -ENOMEM;

115
dvb-core/dmxdev.h
View File

@@ -1,115 +0,0 @@
/*
* dmxdev.h
*
* Copyright (C) 2000 Ralph Metzler & Marcus Metzler
* for convergence integrated media GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
*
*/
#ifndef _DMXDEV_H_
#define _DMXDEV_H_
#include <linux/types.h>
#include <linux/spinlock.h>
#include <linux/kernel.h>
#include <linux/time.h>
#include <linux/timer.h>
#include <linux/wait.h>
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/dvb/dmx.h>
#include "dvbdev.h"
#include "demux.h"
#include "dvb_ringbuffer.h"
enum dmxdev_type {
DMXDEV_TYPE_NONE,
DMXDEV_TYPE_SEC,
DMXDEV_TYPE_PES,
};
enum dmxdev_state {
DMXDEV_STATE_FREE,
DMXDEV_STATE_ALLOCATED,
DMXDEV_STATE_SET,
DMXDEV_STATE_GO,
DMXDEV_STATE_DONE,
DMXDEV_STATE_TIMEDOUT
};
struct dmxdev_feed {
u16 pid;
struct dmx_ts_feed *ts;
struct list_head next;
};
struct dmxdev_filter {
union {
struct dmx_section_filter *sec;
} filter;
union {
/* list of TS and PES feeds (struct dmxdev_feed) */
struct list_head ts;
struct dmx_section_feed *sec;
} feed;
union {
struct dmx_sct_filter_params sec;
struct dmx_pes_filter_params pes;
} params;
enum dmxdev_type type;
enum dmxdev_state state;
struct dmxdev *dev;
struct dvb_ringbuffer buffer;
struct mutex mutex;
/* only for sections */
struct timer_list timer;
int todo;
u8 secheader[3];
};
struct dmxdev {
struct dvb_device *dvbdev;
struct dvb_device *dvr_dvbdev;
struct dmxdev_filter *filter;
struct dmx_demux *demux;
int filternum;
int capabilities;
unsigned int exit:1;
#define DMXDEV_CAP_DUPLEX 1
struct dmx_frontend *dvr_orig_fe;
struct dvb_ringbuffer dvr_buffer;
#define DVR_BUFFER_SIZE (10*188*1024)
struct mutex mutex;
spinlock_t lock;
};
int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *);
void dvb_dmxdev_release(struct dmxdev *dmxdev);
#endif /* _DMXDEV_H_ */

4
dvb-core/dvb_ca_en50221.c
View File

@@ -34,8 +34,8 @@
#endif
#include <linux/kthread.h>
#include "dvb_ca_en50221.h"
#include "dvb_ringbuffer.h"
#include <media/dvb_ca_en50221.h>
#include <media/dvb_ringbuffer.h>
static int dvb_ca_en50221_debug;

142
dvb-core/dvb_ca_en50221.h
View File

@@ -1,142 +0,0 @@
/*
* dvb_ca.h: generic DVB functions for EN50221 CA interfaces
*
* Copyright (C) 2004 Andrew de Quincey
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
*/
#ifndef _DVB_CA_EN50221_H_
#define _DVB_CA_EN50221_H_
#include <linux/list.h>
#include <linux/dvb/ca.h>
#include "dvbdev.h"
#define DVB_CA_EN50221_POLL_CAM_PRESENT 1
#define DVB_CA_EN50221_POLL_CAM_CHANGED 2
#define DVB_CA_EN50221_POLL_CAM_READY 4
#define DVB_CA_EN50221_FLAG_IRQ_CAMCHANGE 1
#define DVB_CA_EN50221_FLAG_IRQ_FR 2
#define DVB_CA_EN50221_FLAG_IRQ_DA 4
#define DVB_CA_EN50221_CAMCHANGE_REMOVED 0
#define DVB_CA_EN50221_CAMCHANGE_INSERTED 1
/**
* struct dvb_ca_en50221- Structure describing a CA interface
*
* @owner: the module owning this structure
* @read_attribute_mem: function for reading attribute memory on the CAM
* @write_attribute_mem: function for writing attribute memory on the CAM
* @read_cam_control: function for reading the control interface on the CAM
* @write_cam_control: function for reading the control interface on the CAM
* @read_data: function for reading data (block mode)
* @write_data: function for writing data (block mode)
* @slot_reset: function to reset the CAM slot
* @slot_shutdown: function to shutdown a CAM slot
* @slot_ts_enable: function to enable the Transport Stream on a CAM slot
* @poll_slot_status: function to poll slot status. Only necessary if
* DVB_CA_FLAG_EN50221_IRQ_CAMCHANGE is not set.
* @data: private data, used by caller.
* @private: Opaque data used by the dvb_ca core. Do not modify!
*
* NOTE: the read_*, write_* and poll_slot_status functions will be
* called for different slots concurrently and need to use locks where
* and if appropriate. There will be no concurrent access to one slot.
*/
struct dvb_ca_en50221 {
struct module *owner;
int (*read_attribute_mem)(struct dvb_ca_en50221 *ca,
int slot, int address);
int (*write_attribute_mem)(struct dvb_ca_en50221 *ca,
int slot, int address, u8 value);
int (*read_cam_control)(struct dvb_ca_en50221 *ca,
int slot, u8 address);
int (*write_cam_control)(struct dvb_ca_en50221 *ca,
int slot, u8 address, u8 value);
int (*read_data)(struct dvb_ca_en50221 *ca,
int slot, u8 *ebuf, int ecount);
int (*write_data)(struct dvb_ca_en50221 *ca,
int slot, u8 *ebuf, int ecount);
int (*slot_reset)(struct dvb_ca_en50221 *ca, int slot);
int (*slot_shutdown)(struct dvb_ca_en50221 *ca, int slot);
int (*slot_ts_enable)(struct dvb_ca_en50221 *ca, int slot);
int (*poll_slot_status)(struct dvb_ca_en50221 *ca, int slot, int open);
void *data;
void *private;
};
/*
* Functions for reporting IRQ events
*/
/**
* dvb_ca_en50221_camchange_irq - A CAMCHANGE IRQ has occurred.
*
* @pubca: CA instance.
* @slot: Slot concerned.
* @change_type: One of the DVB_CA_CAMCHANGE_* values
*/
void dvb_ca_en50221_camchange_irq(struct dvb_ca_en50221 *pubca, int slot,
int change_type);
/**
* dvb_ca_en50221_camready_irq - A CAMREADY IRQ has occurred.
*
* @pubca: CA instance.
* @slot: Slot concerned.
*/
void dvb_ca_en50221_camready_irq(struct dvb_ca_en50221 *pubca, int slot);
/**
* dvb_ca_en50221_frda_irq - An FR or a DA IRQ has occurred.
*
* @ca: CA instance.
* @slot: Slot concerned.
*/
void dvb_ca_en50221_frda_irq(struct dvb_ca_en50221 *ca, int slot);
/*
* Initialisation/shutdown functions
*/
/**
* dvb_ca_en50221_init - Initialise a new DVB CA device.
*
* @dvb_adapter: DVB adapter to attach the new CA device to.
* @ca: The dvb_ca instance.
* @flags: Flags describing the CA device (DVB_CA_EN50221_FLAG_*).
* @slot_count: Number of slots supported.
*
* @return 0 on success, nonzero on failure
*/
int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter,
struct dvb_ca_en50221 *ca, int flags,
int slot_count);
/**
* dvb_ca_en50221_release - Release a DVB CA device.
*
* @ca: The associated dvb_ca instance.
*/
void dvb_ca_en50221_release(struct dvb_ca_en50221 *ca);
#endif

172
dvb-core/dvb_demux.c
View File

@@ -35,7 +35,7 @@
#include <linux/uaccess.h>
#include <asm/div64.h>
#include "dvb_demux.h"
#include <media/dvb_demux.h>
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 0, 0))
@@ -68,6 +68,17 @@ MODULE_PARM_DESC(dvb_demux_feed_err_pkts,
dprintk(x); \
} while (0)
#ifdef CONFIG_DVB_DEMUX_SECTION_LOSS_LOG
# define dprintk_sect_loss(x...) dprintk(x)
#else
# define dprintk_sect_loss(x...)
#endif
#define set_buf_flags(__feed, __flag) \
do { \
(__feed)->buffer_flags |= (__flag); \
} while (0)
/******************************************************************************
* static inlined helper functions
******************************************************************************/
@@ -117,30 +128,30 @@ static inline int dvb_dmx_swfilter_payload(struct dvb_demux_feed *feed,
{
int count = payload(buf);
int p;
#ifdef CONFIG_DVB_DEMUX_SECTION_LOSS_LOG
int ccok;
u8 cc;
#endif
if (count == 0)
return -1;
p = 188 - count;
#ifdef CONFIG_DVB_DEMUX_SECTION_LOSS_LOG
cc = buf[3] & 0x0f;
ccok = ((feed->cc + 1) & 0x0f) == cc;
feed->cc = cc;
if (!ccok)
dprintk("missed packet!\n");
#endif
if (!ccok) {
set_buf_flags(feed, DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED);
dprintk_sect_loss("missed packet: %d instead of %d!\n",
cc, (feed->cc + 1) & 0x0f);
}
if (buf[1] & 0x40) // PUSI ?
feed->peslen = 0xfffa;
feed->peslen += count;
return feed->cb.ts(&buf[p], count, NULL, 0, &feed->feed.ts);
return feed->cb.ts(&buf[p], count, NULL, 0, &feed->feed.ts,
&feed->buffer_flags);
}
static int dvb_dmx_swfilter_sectionfilter(struct dvb_demux_feed *feed,
@@ -162,7 +173,7 @@ static int dvb_dmx_swfilter_sectionfilter(struct dvb_demux_feed *feed,
return 0;
return feed->cb.sec(feed->feed.sec.secbuf, feed->feed.sec.seclen,
NULL, 0, &f->filter);
NULL, 0, &f->filter, &feed->buffer_flags);
}
static inline int dvb_dmx_swfilter_section_feed(struct dvb_demux_feed *feed)
@@ -181,8 +192,10 @@ static inline int dvb_dmx_swfilter_section_feed(struct dvb_demux_feed *feed)
if (sec->check_crc) {
section_syntax_indicator = ((sec->secbuf[1] & 0x80) != 0);
if (section_syntax_indicator &&
demux->check_crc32(feed, sec->secbuf, sec->seclen))
demux->check_crc32(feed, sec->secbuf, sec->seclen)) {
set_buf_flags(feed, DMX_BUFFER_FLAG_HAD_CRC32_DISCARD);
return -1;
}
}
do {
@@ -199,9 +212,8 @@ static void dvb_dmx_swfilter_section_new(struct dvb_demux_feed *feed)
{
struct dmx_section_feed *sec = &feed->feed.sec;
#ifdef CONFIG_DVB_DEMUX_SECTION_LOSS_LOG
if (sec->secbufp < sec->tsfeedp) {
int i, n = sec->tsfeedp - sec->secbufp;
int n = sec->tsfeedp - sec->secbufp;
/*
* Section padding is done with 0xff bytes entirely.
@@ -209,15 +221,13 @@ static void dvb_dmx_swfilter_section_new(struct dvb_demux_feed *feed)
* but just first and last.
*/
if (sec->secbuf[0] != 0xff || sec->secbuf[n - 1] != 0xff) {
dprintk("dvb_demux.c section ts padding loss: %d/%d\n",
n, sec->tsfeedp);
dprintk("dvb_demux.c pad data:");
for (i = 0; i < n; i++)
pr_cont(" %02x", sec->secbuf[i]);
pr_cont("\n");
set_buf_flags(feed,
DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED);
dprintk_sect_loss("section ts padding loss: %d/%d\n",
n, sec->tsfeedp);
dprintk_sect_loss("pad data: %*ph\n", n, sec->secbuf);
}
}
#endif
sec->tsfeedp = sec->secbufp = sec->seclen = 0;
sec->secbuf = sec->secbuf_base;
@@ -236,10 +246,10 @@ static void dvb_dmx_swfilter_section_new(struct dvb_demux_feed *feed)
* when the second packet arrives.
*
* Fix:
* when demux is started, let feed->pusi_seen = 0 to
* when demux is started, let feed->pusi_seen = false to
* prevent initial feeding of garbage from the end of
* previous section. When you for the first time see PUSI=1
* then set feed->pusi_seen = 1
* then set feed->pusi_seen = true
*/
static int dvb_dmx_swfilter_section_copy_dump(struct dvb_demux_feed *feed,
const u8 *buf, u8 len)
@@ -252,11 +262,10 @@ static int dvb_dmx_swfilter_section_copy_dump(struct dvb_demux_feed *feed,
return 0;
if (sec->tsfeedp + len > DMX_MAX_SECFEED_SIZE) {
#ifdef CONFIG_DVB_DEMUX_SECTION_LOSS_LOG
dprintk("dvb_demux.c section buffer full loss: %d/%d\n",
sec->tsfeedp + len - DMX_MAX_SECFEED_SIZE,
DMX_MAX_SECFEED_SIZE);
#endif
set_buf_flags(feed, DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED);
dprintk_sect_loss("section buffer full loss: %d/%d\n",
sec->tsfeedp + len - DMX_MAX_SECFEED_SIZE,
DMX_MAX_SECFEED_SIZE);
len = DMX_MAX_SECFEED_SIZE - sec->tsfeedp;
}
@@ -284,12 +293,13 @@ static int dvb_dmx_swfilter_section_copy_dump(struct dvb_demux_feed *feed,
sec->seclen = seclen;
sec->crc_val = ~0;
/* dump [secbuf .. secbuf+seclen) */
if (feed->pusi_seen)
if (feed->pusi_seen) {
dvb_dmx_swfilter_section_feed(feed);
#ifdef CONFIG_DVB_DEMUX_SECTION_LOSS_LOG
else
dprintk("dvb_demux.c pusi not seen, discarding section data\n");
#endif
} else {
set_buf_flags(feed,
DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED);
dprintk_sect_loss("pusi not seen, discarding section data\n");
}
sec->secbufp += seclen; /* secbufp and secbuf moving together is */
sec->secbuf += seclen; /* redundant but saves pointer arithmetic */
}
@@ -322,19 +332,31 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed,
}
if (!ccok || dc_i) {
#ifdef CONFIG_DVB_DEMUX_SECTION_LOSS_LOG
dprintk("dvb_demux.c discontinuity detected %d bytes lost\n",
count);
if (dc_i) {
set_buf_flags(feed,
DMX_BUFFER_FLAG_DISCONTINUITY_INDICATOR);
dprintk_sect_loss("%d frame with disconnect indicator\n",
cc);
} else {
set_buf_flags(feed,
DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED);
dprintk_sect_loss("discontinuity: %d instead of %d. %d bytes lost\n",
cc, (feed->cc + 1) & 0x0f, count + 4);
}
/*
* those bytes under sume circumstances will again be reported
* those bytes under some circumstances will again be reported
* in the following dvb_dmx_swfilter_section_new
*/
#endif
/*
* Discontinuity detected. Reset pusi_seen = 0 to
* Discontinuity detected. Reset pusi_seen to
* stop feeding of suspicious data until next PUSI=1 arrives
*
* FIXME: does it make sense if the MPEG-TS is the one
* reporting discontinuity?
*/
feed->pusi_seen = 0;
feed->pusi_seen = false;
dvb_dmx_swfilter_section_new(feed);
}
@@ -348,17 +370,16 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed,
dvb_dmx_swfilter_section_copy_dump(feed, before,
before_len);
/* before start of new section, set pusi_seen = 1 */
feed->pusi_seen = 1;
/* before start of new section, set pusi_seen */
feed->pusi_seen = true;
dvb_dmx_swfilter_section_new(feed);
dvb_dmx_swfilter_section_copy_dump(feed, after,
after_len);
} else if (count > 0) {
set_buf_flags(feed,
DMX_BUFFER_FLAG_DISCONTINUITY_DETECTED);
dprintk_sect_loss("PUSI=1 but %d bytes lost\n", count);
}
#ifdef CONFIG_DVB_DEMUX_SECTION_LOSS_LOG
else if (count > 0)
dprintk("dvb_demux.c PUSI=1 but %d bytes lost\n",
count);
#endif
} else {
/* PUSI=0 (is not set), no section boundary */
dvb_dmx_swfilter_section_copy_dump(feed, &buf[p], count);
@@ -378,8 +399,10 @@ static inline void dvb_dmx_swfilter_packet_type(struct dvb_demux_feed *feed,
if (feed->ts_type & TS_PAYLOAD_ONLY)
dvb_dmx_swfilter_payload(feed, buf);
else
feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts);
feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts,
&feed->buffer_flags);
}
/* Used only on full-featured devices */
if (feed->ts_type & TS_DECODER)
if (feed->demux->write_to_decoder)
feed->demux->write_to_decoder(feed, buf, 188);
@@ -426,9 +449,10 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
1024);
speed_timedelta = ktime_ms_delta(cur_time,
demux->speed_last_time);
dprintk("TS speed %llu Kbits/sec \n",
div64_u64(speed_bytes,
speed_timedelta));
if (speed_timedelta)
dprintk("TS speed %llu Kbits/sec \n",
div64_u64(speed_bytes,
speed_timedelta));
}
demux->speed_last_time = cur_time;
@@ -437,6 +461,11 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
}
if (buf[1] & 0x80) {
list_for_each_entry(feed, &demux->feed_list, list_head) {
if ((feed->pid != pid) && (feed->pid != 0x2000))
continue;
set_buf_flags(feed, DMX_BUFFER_FLAG_TEI);
}
dprintk_tscheck("TEI detected. PID=0x%x data1=0x%x\n",
pid, buf[1]);
/* data in this packet can't be trusted - drop it unless
@@ -452,6 +481,13 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
(demux->cnt_storage[pid] + 1) & 0xf;
if ((buf[3] & 0xf) != demux->cnt_storage[pid]) {
list_for_each_entry(feed, &demux->feed_list, list_head) {
if ((feed->pid != pid) && (feed->pid != 0x2000))
continue;
set_buf_flags(feed,
DMX_BUFFER_PKT_COUNTER_MISMATCH);
}
dprintk_tscheck("TS packet counter mismatch. PID=0x%x expected 0x%x got 0x%x\n",
pid, demux->cnt_storage[pid],
buf[3] & 0xf);
@@ -473,7 +509,8 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf)
if (feed->pid == pid)
dvb_dmx_swfilter_packet_type(feed, buf);
else if (feed->pid == 0x2000)
feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts);
feed->cb.ts(buf, 188, NULL, 0, &feed->feed.ts,
&feed->buffer_flags);
}
}
@@ -592,7 +629,16 @@ void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf, size_t count)
spin_lock_irqsave(&demux->lock, flags);
demux->feed->cb.ts(buf, count, NULL, 0, &demux->feed->feed.ts);
#if 1
demux->feed->cb.ts(buf, count, NULL, 0, &demux->feed->feed.ts,
&demux->feed->buffer_flags);
#else
struct dvb_demux_feed *feed;
list_for_each_entry(feed, &demux->feed_list, list_head) {
feed->cb.ts(buf, count, NULL, 0, &feed->feed.ts,
&feed->buffer_flags);
}
#endif
spin_unlock_irqrestore(&demux->lock, flags);
}
@@ -792,6 +838,7 @@ static int dvbdmx_allocate_ts_feed(struct dmx_demux *dmx,
feed->demux = demux;
feed->pid = 0xffff;
feed->peslen = 0xfffa;
feed->buffer_flags = 0;
(*ts_feed) = &feed->feed.ts;
(*ts_feed)->parent = dmx;
@@ -911,14 +958,14 @@ static void prepare_secfilters(struct dvb_demux_feed *dvbdmxfeed)
return;
do {
sf = &f->filter;
doneq = 0;
doneq = false;
for (i = 0; i < DVB_DEMUX_MASK_MAX; i++) {
mode = sf->filter_mode[i];
mask = sf->filter_mask[i];
f->maskandmode[i] = mask & mode;
doneq |= f->maskandnotmode[i] = mask & ~mode;
}
f->doneq = doneq ? 1 : 0;
f->doneq = doneq ? true : false;
} while ((f = f->next));
}
@@ -945,6 +992,7 @@ static int dmx_section_feed_start_filtering(struct dmx_section_feed *feed)
dvbdmxfeed->feed.sec.secbuf = dvbdmxfeed->feed.sec.secbuf_base;
dvbdmxfeed->feed.sec.secbufp = 0;
dvbdmxfeed->feed.sec.seclen = 0;
dvbdmxfeed->pusi_seen = false;
if (!dvbdmx->start_feed) {
mutex_unlock(&dvbdmx->mutex);
@@ -1049,6 +1097,7 @@ static int dvbdmx_allocate_section_feed(struct dmx_demux *demux,
dvbdmxfeed->cb.sec = callback;
dvbdmxfeed->demux = dvbdmx;
dvbdmxfeed->pid = 0xffff;
dvbdmxfeed->buffer_flags = 0;
dvbdmxfeed->feed.sec.secbuf = dvbdmxfeed->feed.sec.secbuf_base;
dvbdmxfeed->feed.sec.secbufp = dvbdmxfeed->feed.sec.seclen = 0;
dvbdmxfeed->feed.sec.tsfeedp = 0;
@@ -1220,12 +1269,25 @@ int dvb_dmx_init(struct dvb_demux *dvbdemux)
dvbdemux->cnt_storage = NULL;
dvbdemux->users = 0;
dvbdemux->filter = vmalloc(dvbdemux->filternum * sizeof(struct dvb_demux_filter));
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 18, 0))
dvbdemux->filter = vmalloc(sizeof(struct dvb_demux_filter) *
dvbdemux->filternum);
if (!dvbdemux->filter)
return -ENOMEM;
dvbdemux->feed = vmalloc(dvbdemux->feednum * sizeof(struct dvb_demux_feed));
dvbdemux->feed = vmalloc(sizeof(struct dvb_demux_feed) *
dvbdemux->feednum);
#else
dvbdemux->filter = vmalloc(array_size(sizeof(struct dvb_demux_filter),
dvbdemux->filternum));
if (!dvbdemux->filter)
return -ENOMEM;
dvbdemux->feed = vmalloc(array_size(sizeof(struct dvb_demux_feed),
dvbdemux->feednum));
#endif
if (!dvbdemux->feed) {
vfree(dvbdemux->filter);
dvbdemux->filter = NULL;

145
dvb-core/dvb_demux.h
View File

@@ -1,145 +0,0 @@
/*
* dvb_demux.h: DVB kernel demux API
*
* Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler
* for convergence integrated media GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
*
*/
#ifndef _DVB_DEMUX_H_
#define _DVB_DEMUX_H_
#include <linux/time.h>
#include <linux/timer.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include "demux.h"
#define DMX_TYPE_TS 0
#define DMX_TYPE_SEC 1
#define DMX_TYPE_PES 2
#define DMX_STATE_FREE 0
#define DMX_STATE_ALLOCATED 1
#define DMX_STATE_SET 2
#define DMX_STATE_READY 3
#define DMX_STATE_GO 4
#define DVB_DEMUX_MASK_MAX 18
#define MAX_PID 0x1fff
#define SPEED_PKTS_INTERVAL 50000
struct dvb_demux_filter {
struct dmx_section_filter filter;
u8 maskandmode[DMX_MAX_FILTER_SIZE];
u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
int doneq;
struct dvb_demux_filter *next;
struct dvb_demux_feed *feed;
int index;
int state;
int type;
u16 hw_handle;
struct timer_list timer;
};
#define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)
struct dvb_demux_feed {
union {
struct dmx_ts_feed ts;
struct dmx_section_feed sec;
} feed;
union {
dmx_ts_cb ts;
dmx_section_cb sec;
} cb;
struct dvb_demux *demux;
void *priv;
int type;
int state;
u16 pid;
ktime_t timeout;
struct dvb_demux_filter *filter;
int ts_type;
enum dmx_ts_pes pes_type;
int cc;
int pusi_seen; /* prevents feeding of garbage from previous section */
u16 peslen;
struct list_head list_head;
unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */
};
struct dvb_demux {
struct dmx_demux dmx;
void *priv;
int filternum;
int feednum;
int (*start_feed)(struct dvb_demux_feed *feed);
int (*stop_feed)(struct dvb_demux_feed *feed);
int (*write_to_decoder)(struct dvb_demux_feed *feed,
const u8 *buf, size_t len);
u32 (*check_crc32)(struct dvb_demux_feed *feed,
const u8 *buf, size_t len);
void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
const u8 *src, size_t len);
int users;
#define MAX_DVB_DEMUX_USERS 10
struct dvb_demux_filter *filter;
struct dvb_demux_feed *feed;
struct list_head frontend_list;
struct dvb_demux_feed *pesfilter[DMX_PES_OTHER];
u16 pids[DMX_PES_OTHER];
int playing;
int recording;
#define DMX_MAX_PID 0x2000
struct list_head feed_list;
u8 tsbuf[204];
int tsbufp;
struct mutex mutex;
spinlock_t lock;
uint8_t *cnt_storage; /* for TS continuity check */
ktime_t speed_last_time; /* for TS speed check */
uint32_t speed_pkts_cnt; /* for TS speed check */
};
int dvb_dmx_init(struct dvb_demux *dvbdemux);
void dvb_dmx_release(struct dvb_demux *dvbdemux);
void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf,
size_t count);
void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
size_t count);
void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf,
size_t count);
#endif /* _DVB_DEMUX_H_ */

246
dvb-core/dvb_filter.h
View File

@@ -1,246 +0,0 @@
/*
* dvb_filter.h
*
* Copyright (C) 2003 Convergence GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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 Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _DVB_FILTER_H_
#define _DVB_FILTER_H_
#include <linux/slab.h>
#include "demux.h"
typedef int (dvb_filter_pes2ts_cb_t) (void *, unsigned char *);
struct dvb_filter_pes2ts {
unsigned char buf[188];
unsigned char cc;
dvb_filter_pes2ts_cb_t *cb;
void *priv;
};
void dvb_filter_pes2ts_init(struct dvb_filter_pes2ts *p2ts, unsigned short pid,
dvb_filter_pes2ts_cb_t *cb, void *priv);
int dvb_filter_pes2ts(struct dvb_filter_pes2ts *p2ts, unsigned char *pes,
int len, int payload_start);
#define PROG_STREAM_MAP 0xBC
#define PRIVATE_STREAM1 0xBD
#define PADDING_STREAM 0xBE
#define PRIVATE_STREAM2 0xBF
#define AUDIO_STREAM_S 0xC0
#define AUDIO_STREAM_E 0xDF
#define VIDEO_STREAM_S 0xE0
#define VIDEO_STREAM_E 0xEF
#define ECM_STREAM 0xF0
#define EMM_STREAM 0xF1
#define DSM_CC_STREAM 0xF2
#define ISO13522_STREAM 0xF3
#define PROG_STREAM_DIR 0xFF
#define DVB_PICTURE_START 0x00
#define DVB_USER_START 0xb2
#define DVB_SEQUENCE_HEADER 0xb3
#define DVB_SEQUENCE_ERROR 0xb4
#define DVB_EXTENSION_START 0xb5
#define DVB_SEQUENCE_END 0xb7
#define DVB_GOP_START 0xb8
#define DVB_EXCEPT_SLICE 0xb0
#define SEQUENCE_EXTENSION 0x01
#define SEQUENCE_DISPLAY_EXTENSION 0x02
#define PICTURE_CODING_EXTENSION 0x08
#define QUANT_MATRIX_EXTENSION 0x03
#define PICTURE_DISPLAY_EXTENSION 0x07
#define I_FRAME 0x01
#define B_FRAME 0x02
#define P_FRAME 0x03
/* Initialize sequence_data */
#define INIT_HORIZONTAL_SIZE 720
#define INIT_VERTICAL_SIZE 576
#define INIT_ASPECT_RATIO 0x02
#define INIT_FRAME_RATE 0x03
#define INIT_DISP_HORIZONTAL_SIZE 540
#define INIT_DISP_VERTICAL_SIZE 576
//flags2
#define PTS_DTS_FLAGS 0xC0
#define ESCR_FLAG 0x20
#define ES_RATE_FLAG 0x10
#define DSM_TRICK_FLAG 0x08
#define ADD_CPY_FLAG 0x04
#define PES_CRC_FLAG 0x02
#define PES_EXT_FLAG 0x01
//pts_dts flags
#define PTS_ONLY 0x80
#define PTS_DTS 0xC0
#define TS_SIZE 188
#define TRANS_ERROR 0x80
#define PAY_START 0x40
#define TRANS_PRIO 0x20
#define PID_MASK_HI 0x1F
//flags
#define TRANS_SCRMBL1 0x80
#define TRANS_SCRMBL2 0x40
#define ADAPT_FIELD 0x20
#define PAYLOAD 0x10
#define COUNT_MASK 0x0F
// adaptation flags
#define DISCON_IND 0x80
#define RAND_ACC_IND 0x40
#define ES_PRI_IND 0x20
#define PCR_FLAG 0x10
#define OPCR_FLAG 0x08
#define SPLICE_FLAG 0x04
#define TRANS_PRIV 0x02
#define ADAP_EXT_FLAG 0x01
// adaptation extension flags
#define LTW_FLAG 0x80
#define PIECE_RATE 0x40
#define SEAM_SPLICE 0x20
#define MAX_PLENGTH 0xFFFF
#define MMAX_PLENGTH (256*MAX_PLENGTH)
#ifndef IPACKS
#define IPACKS 2048
#endif
struct ipack {
int size;
int found;
u8 *buf;
u8 cid;
u32 plength;
u8 plen[2];
u8 flag1;
u8 flag2;
u8 hlength;
u8 pts[5];
u16 *pid;
int mpeg;
u8 check;
int which;
int done;
void *data;
void (*func)(u8 *buf, int size, void *priv);
int count;
int repack_subids;
};
struct dvb_video_info {
u32 horizontal_size;
u32 vertical_size;
u32 aspect_ratio;
u32 framerate;
u32 video_format;
u32 bit_rate;
u32 comp_bit_rate;
u32 vbv_buffer_size;
s16 vbv_delay;
u32 CSPF;
u32 off;
};
#define OFF_SIZE 4
#define FIRST_FIELD 0
#define SECOND_FIELD 1
#define VIDEO_FRAME_PICTURE 0x03
struct mpg_picture {
int channel;
struct dvb_video_info vinfo;
u32 *sequence_gop_header;
u32 *picture_header;
s32 time_code;
int low_delay;
int closed_gop;
int broken_link;
int sequence_header_flag;
int gop_flag;
int sequence_end_flag;
u8 profile_and_level;
s32 picture_coding_parameter;
u32 matrix[32];
s8 matrix_change_flag;
u8 picture_header_parameter;
/* bit 0 - 2: bwd f code
bit 3 : fpb vector
bit 4 - 6: fwd f code
bit 7 : fpf vector */
int mpeg1_flag;
int progressive_sequence;
int sequence_display_extension_flag;
u32 sequence_header_data;
s16 last_frame_centre_horizontal_offset;
s16 last_frame_centre_vertical_offset;
u32 pts[2]; /* [0] 1st field, [1] 2nd field */
int top_field_first;
int repeat_first_field;
int progressive_frame;
int bank;
int forward_bank;
int backward_bank;
int compress;
s16 frame_centre_horizontal_offset[OFF_SIZE];
/* [0-2] 1st field, [3] 2nd field */
s16 frame_centre_vertical_offset[OFF_SIZE];
/* [0-2] 1st field, [3] 2nd field */
s16 temporal_reference[2];
/* [0] 1st field, [1] 2nd field */
s8 picture_coding_type[2];
/* [0] 1st field, [1] 2nd field */
s8 picture_structure[2];
/* [0] 1st field, [1] 2nd field */
s8 picture_display_extension_flag[2];
/* [0] 1st field, [1] 2nd field */
/* picture_display_extenion() 0:no 1:exit*/
s8 pts_flag[2];
/* [0] 1st field, [1] 2nd field */
};
struct dvb_audio_info {
int layer;
u32 bit_rate;
u32 frequency;
u32 mode;
u32 mode_extension ;
u32 emphasis;
u32 framesize;
u32 off;
};
int dvb_filter_get_ac3info(u8 *mbuf, int count, struct dvb_audio_info *ai, int pr);
#endif

1029
dvb-core/dvb_frontend.c
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817
dvb-core/dvb_frontend.h
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/*
* dvb_frontend.h
*
* The Digital TV Frontend kABI defines a driver-internal interface for
* registering low-level, hardware specific driver to a hardware independent
* frontend layer.
*
* Copyright (C) 2001 convergence integrated media GmbH
* Copyright (C) 2004 convergence GmbH
*
* Written by Ralph Metzler
* Overhauled by Holger Waechtler
* Kernel I2C stuff by Michael Hunold <hunold@convergence.de>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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 Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifndef _DVB_FRONTEND_H_
#define _DVB_FRONTEND_H_
#include <linux/types.h>
#include <linux/version.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0))
#include <linux/sched/signal.h>
#else
#include <linux/sched.h>
#endif
#include <linux/ioctl.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <linux/dvb/frontend.h>
#include "dvbdev.h"
/*
* Maximum number of Delivery systems per frontend. It
* should be smaller or equal to 32
*/
#define MAX_DELSYS 16
/**
* struct dvb_frontend_tune_settings - parameters to adjust frontend tuning
*
* @min_delay_ms: minimum delay for tuning, in ms
* @step_size: step size between two consecutive frequencies
* @max_drift: maximum drift
*
* NOTE: step_size is in Hz, for terrestrial/cable or kHz for satellite
*/
struct dvb_frontend_tune_settings {
int min_delay_ms;
int step_size;
int max_drift;
};
struct dvb_frontend;
/**
* struct dvb_tuner_info - Frontend name and min/max ranges/bandwidths
*
* @name: name of the Frontend
* @frequency_min: minimal frequency supported
* @frequency_max: maximum frequency supported
* @frequency_step: frequency step
* @bandwidth_min: minimal frontend bandwidth supported
* @bandwidth_max: maximum frontend bandwidth supported
* @bandwidth_step: frontend bandwidth step
*
* NOTE: frequency parameters are in Hz, for terrestrial/cable or kHz for
* satellite.
*/
struct dvb_tuner_info {
char name[128];
u32 frequency_min;
u32 frequency_max;
u32 frequency_step;
u32 bandwidth_min;
u32 bandwidth_max;
u32 bandwidth_step;
};
/**
* struct analog_parameters - Parameters to tune into an analog/radio channel
*
* @frequency: Frequency used by analog TV tuner (either in 62.5 kHz step,
* for TV, or 62.5 Hz for radio)
* @mode: Tuner mode, as defined on enum v4l2_tuner_type
* @audmode: Audio mode as defined for the rxsubchans field at videodev2.h,
* e. g. V4L2_TUNER_MODE_*
* @std: TV standard bitmap as defined at videodev2.h, e. g. V4L2_STD_*
*
* Hybrid tuners should be supported by both V4L2 and DVB APIs. This
* struct contains the data that are used by the V4L2 side. To avoid
* dependencies from V4L2 headers, all enums here are declared as integers.
*/
struct analog_parameters {
unsigned int frequency;
unsigned int mode;
unsigned int audmode;
u64 std;
};
/**
* enum dvbfe_algo - defines the algorithm used to tune into a channel
*
* @DVBFE_ALGO_HW: Hardware Algorithm -
* Devices that support this algorithm do everything in hardware
* and no software support is needed to handle them.
* Requesting these devices to LOCK is the only thing required,
* device is supposed to do everything in the hardware.
*
* @DVBFE_ALGO_SW: Software Algorithm -
* These are dumb devices, that require software to do everything
*
* @DVBFE_ALGO_CUSTOM: Customizable Agorithm -
* Devices having this algorithm can be customized to have specific
* algorithms in the frontend driver, rather than simply doing a
* software zig-zag. In this case the zigzag maybe hardware assisted
* or it maybe completely done in hardware. In all cases, usage of
* this algorithm, in conjunction with the search and track
* callbacks, utilizes the driver specific algorithm.
*
* @DVBFE_ALGO_RECOVERY: Recovery Algorithm -
* These devices have AUTO recovery capabilities from LOCK failure
*/
enum dvbfe_algo {
DVBFE_ALGO_HW = (1 << 0),
DVBFE_ALGO_SW = (1 << 1),
DVBFE_ALGO_CUSTOM = (1 << 2),
DVBFE_ALGO_RECOVERY = (1 << 31)
};
/**
* enum dvbfe_search - search callback possible return status
*
* @DVBFE_ALGO_SEARCH_SUCCESS:
* The frontend search algorithm completed and returned successfully
*
* @DVBFE_ALGO_SEARCH_ASLEEP:
* The frontend search algorithm is sleeping
*
* @DVBFE_ALGO_SEARCH_FAILED:
* The frontend search for a signal failed
*
* @DVBFE_ALGO_SEARCH_INVALID:
* The frontend search algorith was probably supplied with invalid
* parameters and the search is an invalid one
*
* @DVBFE_ALGO_SEARCH_ERROR:
* The frontend search algorithm failed due to some error
*
* @DVBFE_ALGO_SEARCH_AGAIN:
* The frontend search algorithm was requested to search again
*/
enum dvbfe_search {
DVBFE_ALGO_SEARCH_SUCCESS = (1 << 0),
DVBFE_ALGO_SEARCH_ASLEEP = (1 << 1),
DVBFE_ALGO_SEARCH_FAILED = (1 << 2),
DVBFE_ALGO_SEARCH_INVALID = (1 << 3),
DVBFE_ALGO_SEARCH_AGAIN = (1 << 4),
DVBFE_ALGO_SEARCH_ERROR = (1 << 31),
};
/**
* struct dvb_tuner_ops - Tuner information and callbacks
*
* @info: embedded struct dvb_tuner_info with tuner properties
* @release: callback function called when frontend is dettached.
* drivers should free any allocated memory.
* @init: callback function used to initialize the tuner device.
* @sleep: callback function used to put the tuner to sleep.
* @suspend: callback function used to inform that the Kernel will
* suspend.
* @resume: callback function used to inform that the Kernel is
* resuming from suspend.
* @set_params: callback function used to inform the tuner to tune
* into a digital TV channel. The properties to be used
* are stored at @dvb_frontend.dtv_property_cache;. The
* tuner demod can change the parameters to reflect the
* changes needed for the channel to be tuned, and
* update statistics. This is the recommended way to set
* the tuner parameters and should be used on newer
* drivers.
* @set_analog_params: callback function used to tune into an analog TV
* channel on hybrid tuners. It passes @analog_parameters;
* to the driver.
* @set_config: callback function used to send some tuner-specific
* parameters.
* @get_frequency: get the actual tuned frequency
* @get_bandwidth: get the bandwitdh used by the low pass filters
* @get_if_frequency: get the Intermediate Frequency, in Hz. For baseband,
* should return 0.
* @get_status: returns the frontend lock status
* @get_rf_strength: returns the RF signal strengh. Used mostly to support
* analog TV and radio. Digital TV should report, instead,
* via DVBv5 API (@dvb_frontend.dtv_property_cache;).
* @get_afc: Used only by analog TV core. Reports the frequency
* drift due to AFC.
* @calc_regs: callback function used to pass register data settings
* for simple tuners. Shouldn't be used on newer drivers.
* @set_frequency: Set a new frequency. Shouldn't be used on newer drivers.
* @set_bandwidth: Set a new frequency. Shouldn't be used on newer drivers.
*
* NOTE: frequencies used on get_frequency and set_frequency are in Hz for
* terrestrial/cable or kHz for satellite.
*
*/
struct dvb_tuner_ops {
struct dvb_tuner_info info;
void (*release)(struct dvb_frontend *fe);
int (*init)(struct dvb_frontend *fe);
int (*sleep)(struct dvb_frontend *fe);
int (*suspend)(struct dvb_frontend *fe);
int (*resume)(struct dvb_frontend *fe);
/* This is the recomended way to set the tuner */
int (*set_params)(struct dvb_frontend *fe);
int (*set_analog_params)(struct dvb_frontend *fe, struct analog_parameters *p);
int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);
int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency);
int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);
int (*get_if_frequency)(struct dvb_frontend *fe, u32 *frequency);
#define TUNER_STATUS_LOCKED 1
#define TUNER_STATUS_STEREO 2
int (*get_status)(struct dvb_frontend *fe, u32 *status);
int (*get_rf_strength)(struct dvb_frontend *fe, u16 *strength);
int (*get_afc)(struct dvb_frontend *fe, s32 *afc);
/*
* This is support for demods like the mt352 - fills out the supplied
* buffer with what to write.
*
* Don't use on newer drivers.
*/
int (*calc_regs)(struct dvb_frontend *fe, u8 *buf, int buf_len);
/*
* These are provided separately from set_params in order to
* facilitate silicon tuners which require sophisticated tuning loops,
* controlling each parameter separately.
*
* Don't use on newer drivers.
*/
int (*set_frequency)(struct dvb_frontend *fe, u32 frequency);
int (*set_bandwidth)(struct dvb_frontend *fe, u32 bandwidth);
};
/**
* struct analog_demod_info - Information struct for analog TV part of the demod
*
* @name: Name of the analog TV demodulator
*/
struct analog_demod_info {
char *name;
};
/**
* struct analog_demod_ops - Demodulation information and callbacks for
* analog TV and radio
*
* @info: pointer to struct analog_demod_info
* @set_params: callback function used to inform the demod to set the
* demodulator parameters needed to decode an analog or
* radio channel. The properties are passed via
* struct @analog_params;.
* @has_signal: returns 0xffff if has signal, or 0 if it doesn't.
* @get_afc: Used only by analog TV core. Reports the frequency
* drift due to AFC.
* @tuner_status: callback function that returns tuner status bits, e. g.
* TUNER_STATUS_LOCKED and TUNER_STATUS_STEREO.
* @standby: set the tuner to standby mode.
* @release: callback function called when frontend is dettached.
* drivers should free any allocated memory.
* @i2c_gate_ctrl: controls the I2C gate. Newer drivers should use I2C
* mux support instead.
* @set_config: callback function used to send some tuner-specific
* parameters.
*/
struct analog_demod_ops {
struct analog_demod_info info;
void (*set_params)(struct dvb_frontend *fe,
struct analog_parameters *params);
int (*has_signal)(struct dvb_frontend *fe, u16 *signal);
int (*get_afc)(struct dvb_frontend *fe, s32 *afc);
void (*tuner_status)(struct dvb_frontend *fe);
void (*standby)(struct dvb_frontend *fe);
void (*release)(struct dvb_frontend *fe);
int (*i2c_gate_ctrl)(struct dvb_frontend *fe, int enable);
/** This is to allow setting tuner-specific configuration */
int (*set_config)(struct dvb_frontend *fe, void *priv_cfg);
};
struct dtv_frontend_properties;
/**
* struct dvb_frontend_ops - Demodulation information and callbacks for
* ditialt TV
*
* @info: embedded struct dvb_tuner_info with tuner properties
* @delsys: Delivery systems supported by the frontend
* @detach: callback function called when frontend is detached.
* drivers should clean up, but not yet free the struct
* dvb_frontend allocation.
* @release: callback function called when frontend is ready to be
* freed.
* drivers should free any allocated memory.
* @release_sec: callback function requesting that the Satelite Equipment
* Control (SEC) driver to release and free any memory
* allocated by the driver.
* @init: callback function used to initialize the tuner device.
* @sleep: callback function used to put the tuner to sleep.
* @write: callback function used by some demod legacy drivers to
* allow other drivers to write data into their registers.
* Should not be used on new drivers.
* @tune: callback function used by demod drivers that use
* @DVBFE_ALGO_HW; to tune into a frequency.
* @get_frontend_algo: returns the desired hardware algorithm.
* @set_frontend: callback function used to inform the demod to set the
* parameters for demodulating a digital TV channel.
* The properties to be used are stored at
* @dvb_frontend.dtv_property_cache;. The demod can change
* the parameters to reflect the changes needed for the
* channel to be decoded, and update statistics.
* @get_tune_settings: callback function
* @get_frontend: callback function used to inform the parameters
* actuall in use. The properties to be used are stored at
* @dvb_frontend.dtv_property_cache; and update
* statistics. Please notice that it should not return
* an error code if the statistics are not available
* because the demog is not locked.
* @read_status: returns the locking status of the frontend.
* @read_ber: legacy callback function to return the bit error rate.
* Newer drivers should provide such info via DVBv5 API,
* e. g. @set_frontend;/@get_frontend;, implementing this
* callback only if DVBv3 API compatibility is wanted.
* @read_signal_strength: legacy callback function to return the signal
* strength. Newer drivers should provide such info via
* DVBv5 API, e. g. @set_frontend;/@get_frontend;,
* implementing this callback only if DVBv3 API
* compatibility is wanted.
* @read_snr: legacy callback function to return the Signal/Noise
* rate. Newer drivers should provide such info via
* DVBv5 API, e. g. @set_frontend;/@get_frontend;,
* implementing this callback only if DVBv3 API
* compatibility is wanted.
* @read_ucblocks: legacy callback function to return the Uncorrected Error
* Blocks. Newer drivers should provide such info via
* DVBv5 API, e. g. @set_frontend;/@get_frontend;,
* implementing this callback only if DVBv3 API
* compatibility is wanted.
* @diseqc_reset_overload: callback function to implement the
* FE_DISEQC_RESET_OVERLOAD ioctl (only Satellite)
* @diseqc_send_master_cmd: callback function to implement the
* FE_DISEQC_SEND_MASTER_CMD ioctl (only Satellite).
* @diseqc_recv_slave_reply: callback function to implement the
* FE_DISEQC_RECV_SLAVE_REPLY ioctl (only Satellite)
* @diseqc_send_burst: callback function to implement the
* FE_DISEQC_SEND_BURST ioctl (only Satellite).
* @set_tone: callback function to implement the
* FE_SET_TONE ioctl (only Satellite).
* @set_voltage: callback function to implement the
* FE_SET_VOLTAGE ioctl (only Satellite).
* @enable_high_lnb_voltage: callback function to implement the
* FE_ENABLE_HIGH_LNB_VOLTAGE ioctl (only Satellite).
* @dishnetwork_send_legacy_command: callback function to implement the
* FE_DISHNETWORK_SEND_LEGACY_CMD ioctl (only Satellite).
* Drivers should not use this, except when the DVB
* core emulation fails to provide proper support (e.g.
* if @set_voltage takes more than 8ms to work), and
* when backward compatibility with this legacy API is
* required.
* @i2c_gate_ctrl: controls the I2C gate. Newer drivers should use I2C
* mux support instead.
* @ts_bus_ctrl: callback function used to take control of the TS bus.
* @set_lna: callback function to power on/off/auto the LNA.
* @search: callback function used on some custom algo search algos.
* @tuner_ops: pointer to struct dvb_tuner_ops
* @analog_ops: pointer to struct analog_demod_ops
* @set_property: callback function to allow the frontend to validade
* incoming properties. Should not be used on new drivers.
* @get_property: callback function to allow the frontend to override
* outcoming properties. Should not be used on new drivers.
*/
struct dvb_frontend_ops {
struct dvb_frontend_info info;
u8 delsys[MAX_DELSYS];
void (*detach)(struct dvb_frontend *fe);
void (*release)(struct dvb_frontend* fe);
void (*release_sec)(struct dvb_frontend* fe);
int (*init)(struct dvb_frontend* fe);
int (*sleep)(struct dvb_frontend* fe);
int (*write)(struct dvb_frontend* fe, const u8 buf[], int len);
/* if this is set, it overrides the default swzigzag */
int (*tune)(struct dvb_frontend* fe,
bool re_tune,
unsigned int mode_flags,
unsigned int *delay,
enum fe_status *status);
/* get frontend tuning algorithm from the module */
enum dvbfe_algo (*get_frontend_algo)(struct dvb_frontend *fe);
/* these two are only used for the swzigzag code */
int (*set_frontend)(struct dvb_frontend *fe);
int (*get_tune_settings)(struct dvb_frontend* fe, struct dvb_frontend_tune_settings* settings);
int (*get_frontend)(struct dvb_frontend *fe,
struct dtv_frontend_properties *props);
int (*read_status)(struct dvb_frontend *fe, enum fe_status *status);
int (*read_ber)(struct dvb_frontend* fe, u32* ber);
int (*read_signal_strength)(struct dvb_frontend* fe, u16* strength);
int (*read_snr)(struct dvb_frontend* fe, u16* snr);
int (*read_ucblocks)(struct dvb_frontend* fe, u32* ucblocks);
int (*diseqc_reset_overload)(struct dvb_frontend* fe);
int (*diseqc_send_master_cmd)(struct dvb_frontend* fe, struct dvb_diseqc_master_cmd* cmd);
int (*diseqc_recv_slave_reply)(struct dvb_frontend* fe, struct dvb_diseqc_slave_reply* reply);
int (*diseqc_send_burst)(struct dvb_frontend *fe,
enum fe_sec_mini_cmd minicmd);
int (*set_tone)(struct dvb_frontend *fe, enum fe_sec_tone_mode tone);
int (*set_voltage)(struct dvb_frontend *fe,
enum fe_sec_voltage voltage);
int (*enable_high_lnb_voltage)(struct dvb_frontend* fe, long arg);
int (*dishnetwork_send_legacy_command)(struct dvb_frontend* fe, unsigned long cmd);
int (*i2c_gate_ctrl)(struct dvb_frontend* fe, int enable);
int (*ts_bus_ctrl)(struct dvb_frontend* fe, int acquire);
int (*set_lna)(struct dvb_frontend *);
int (*set_input)(struct dvb_frontend *, int);
/*
* These callbacks are for devices that implement their own
* tuning algorithms, rather than a simple swzigzag
*/
enum dvbfe_search (*search)(struct dvb_frontend *fe);
struct dvb_tuner_ops tuner_ops;
struct analog_demod_ops analog_ops;
int (*set_property)(struct dvb_frontend* fe, struct dtv_property* tvp);
int (*get_property)(struct dvb_frontend* fe, struct dtv_property* tvp);
u8 xbar[3];
};
#ifdef __DVB_CORE__
#define MAX_EVENT 8
/* Used only internally at dvb_frontend.c */
struct dvb_fe_events {
struct dvb_frontend_event events[MAX_EVENT];
int eventw;
int eventr;
int overflow;
wait_queue_head_t wait_queue;
struct mutex mtx;
};
#endif
/**
* struct dtv_frontend_properties - contains a list of properties that are
* specific to a digital TV standard.
*
* @frequency: frequency in Hz for terrestrial/cable or in kHz for
* Satellite
* @modulation: Frontend modulation type
* @voltage: SEC voltage (only Satellite)
* @sectone: SEC tone mode (only Satellite)
* @inversion: Spectral inversion
* @fec_inner: Forward error correction inner Code Rate
* @transmission_mode: Transmission Mode
* @bandwidth_hz: Bandwidth, in Hz. A zero value means that userspace
* wants to autodetect.
* @guard_interval: Guard Interval
* @hierarchy: Hierarchy
* @symbol_rate: Symbol Rate
* @code_rate_HP: high priority stream code rate
* @code_rate_LP: low priority stream code rate
* @pilot: Enable/disable/autodetect pilot tones
* @rolloff: Rolloff factor (alpha)
* @delivery_system: FE delivery system (e. g. digital TV standard)
* @interleaving: interleaving
* @isdbt_partial_reception: ISDB-T partial reception (only ISDB standard)
* @isdbt_sb_mode: ISDB-T Sound Broadcast (SB) mode (only ISDB standard)
* @isdbt_sb_subchannel: ISDB-T SB subchannel (only ISDB standard)
* @isdbt_sb_segment_idx: ISDB-T SB segment index (only ISDB standard)
* @isdbt_sb_segment_count: ISDB-T SB segment count (only ISDB standard)
* @isdbt_layer_enabled: ISDB Layer enabled (only ISDB standard)
* @layer: ISDB per-layer data (only ISDB standard)
* @layer.segment_count: Segment Count;
* @layer.fec: per layer code rate;
* @layer.modulation: per layer modulation;
* @layer.interleaving: per layer interleaving.
* @stream_id: If different than zero, enable substream filtering, if
* hardware supports (DVB-S2 and DVB-T2).
* @scrambling_sequence_index: Carries the index of the DVB-S2 physical layer
* scrambling sequence.
* @atscmh_fic_ver: Version number of the FIC (Fast Information Channel)
* signaling data (only ATSC-M/H)
* @atscmh_parade_id: Parade identification number (only ATSC-M/H)
* @atscmh_nog: Number of MH groups per MH subframe for a designated
* parade (only ATSC-M/H)
* @atscmh_tnog: Total number of MH groups including all MH groups
* belonging to all MH parades in one MH subframe
* (only ATSC-M/H)
* @atscmh_sgn: Start group number (only ATSC-M/H)
* @atscmh_prc: Parade repetition cycle (only ATSC-M/H)
* @atscmh_rs_frame_mode: Reed Solomon (RS) frame mode (only ATSC-M/H)
* @atscmh_rs_frame_ensemble: RS frame ensemble (only ATSC-M/H)
* @atscmh_rs_code_mode_pri: RS code mode pri (only ATSC-M/H)
* @atscmh_rs_code_mode_sec: RS code mode sec (only ATSC-M/H)
* @atscmh_sccc_block_mode: Series Concatenated Convolutional Code (SCCC)
* Block Mode (only ATSC-M/H)
* @atscmh_sccc_code_mode_a: SCCC code mode A (only ATSC-M/H)
* @atscmh_sccc_code_mode_b: SCCC code mode B (only ATSC-M/H)
* @atscmh_sccc_code_mode_c: SCCC code mode C (only ATSC-M/H)
* @atscmh_sccc_code_mode_d: SCCC code mode D (only ATSC-M/H)
* @lna: Power ON/OFF/AUTO the Linear Now-noise Amplifier (LNA)
* @strength: DVBv5 API statistics: Signal Strength
* @cnr: DVBv5 API statistics: Signal to Noise ratio of the
* (main) carrier
* @pre_bit_error: DVBv5 API statistics: pre-Viterbi bit error count
* @pre_bit_count: DVBv5 API statistics: pre-Viterbi bit count
* @post_bit_error: DVBv5 API statistics: post-Viterbi bit error count
* @post_bit_count: DVBv5 API statistics: post-Viterbi bit count
* @block_error: DVBv5 API statistics: block error count
* @block_count: DVBv5 API statistics: block count
*
* NOTE: derivated statistics like Uncorrected Error blocks (UCE) are
* calculated on userspace.
*
* Only a subset of the properties are needed for a given delivery system.
* For more info, consult the media_api.html with the documentation of the
* Userspace API.
*/
struct dtv_frontend_properties {
u32 frequency;
enum fe_modulation modulation;
enum fe_sec_voltage voltage;
enum fe_sec_tone_mode sectone;
enum fe_spectral_inversion inversion;
enum fe_code_rate fec_inner;
enum fe_transmit_mode transmission_mode;
u32 bandwidth_hz; /* 0 = AUTO */
enum fe_guard_interval guard_interval;
enum fe_hierarchy hierarchy;
u32 symbol_rate;
enum fe_code_rate code_rate_HP;
enum fe_code_rate code_rate_LP;
enum fe_pilot pilot;
enum fe_rolloff rolloff;
enum fe_delivery_system delivery_system;
enum fe_interleaving interleaving;
/* ISDB-T specifics */
u8 isdbt_partial_reception;
u8 isdbt_sb_mode;
u8 isdbt_sb_subchannel;
u32 isdbt_sb_segment_idx;
u32 isdbt_sb_segment_count;
u8 isdbt_layer_enabled;
struct {
u8 segment_count;
enum fe_code_rate fec;
enum fe_modulation modulation;
u8 interleaving;
} layer[3];
/* Multistream specifics */
u32 stream_id;
/* Physical Layer Scrambling specifics */
u32 scrambling_sequence_index;
/* ATSC-MH specifics */
u8 atscmh_fic_ver;
u8 atscmh_parade_id;
u8 atscmh_nog;
u8 atscmh_tnog;
u8 atscmh_sgn;
u8 atscmh_prc;
u8 atscmh_rs_frame_mode;
u8 atscmh_rs_frame_ensemble;
u8 atscmh_rs_code_mode_pri;
u8 atscmh_rs_code_mode_sec;
u8 atscmh_sccc_block_mode;
u8 atscmh_sccc_code_mode_a;
u8 atscmh_sccc_code_mode_b;
u8 atscmh_sccc_code_mode_c;
u8 atscmh_sccc_code_mode_d;
u32 lna;
s32 input;
/* statistics data */
struct dtv_fe_stats strength;
struct dtv_fe_stats cnr;
struct dtv_fe_stats pre_bit_error;
struct dtv_fe_stats pre_bit_count;
struct dtv_fe_stats post_bit_error;
struct dtv_fe_stats post_bit_count;
struct dtv_fe_stats block_error;
struct dtv_fe_stats block_count;
/* private: */
/* Cache State */
u32 state;
};
#define DVB_FE_NO_EXIT 0
#define DVB_FE_NORMAL_EXIT 1
#define DVB_FE_DEVICE_REMOVED 2
#define DVB_FE_DEVICE_RESUME 3
/**
* struct dvb_frontend - Frontend structure to be used on drivers.
*
* @refcount: refcount to keep track of struct dvb_frontend
* references
* @ops: embedded struct dvb_frontend_ops
* @dvb: pointer to struct dvb_adapter
* @demodulator_priv: demod private data
* @tuner_priv: tuner private data
* @frontend_priv: frontend private data
* @sec_priv: SEC private data
* @analog_demod_priv: Analog demod private data
* @dtv_property_cache: embedded struct dtv_frontend_properties
* @callback: callback function used on some drivers to call
* either the tuner or the demodulator.
* @id: Frontend ID
* @exit: Used to inform the DVB core that the frontend
* thread should exit (usually, means that the hardware
* got disconnected.
*/
struct dvb_frontend {
struct kref refcount;
struct dvb_frontend_ops ops;
struct dvb_adapter *dvb;
void *demodulator_priv;
void *tuner_priv;
void *frontend_priv;
void *sec_priv;
void *analog_demod_priv;
struct dtv_frontend_properties dtv_property_cache;
#define DVB_FRONTEND_COMPONENT_TUNER 0
#define DVB_FRONTEND_COMPONENT_DEMOD 1
int (*callback)(void *adapter_priv, int component, int cmd, int arg);
int id;
unsigned int exit;
};
/**
* dvb_register_frontend() - Registers a DVB frontend at the adapter
*
* @dvb: pointer to the dvb adapter
* @fe: pointer to the frontend struct
*
* Allocate and initialize the private data needed by the frontend core to
* manage the frontend and calls dvb_register_device() to register a new
* frontend. It also cleans the property cache that stores the frontend
* parameters and selects the first available delivery system.
*/
int dvb_register_frontend(struct dvb_adapter *dvb,
struct dvb_frontend *fe);
/**
* dvb_unregister_frontend() - Unregisters a DVB frontend
*
* @fe: pointer to the frontend struct
*
* Stops the frontend kthread, calls dvb_unregister_device() and frees the
* private frontend data allocated by dvb_register_frontend().
*
* NOTE: This function doesn't frees the memory allocated by the demod,
* by the SEC driver and by the tuner. In order to free it, an explicit call to
* dvb_frontend_detach() is needed, after calling this function.
*/
int dvb_unregister_frontend(struct dvb_frontend *fe);
/**
* dvb_frontend_detach() - Detaches and frees frontend specific data
*
* @fe: pointer to the frontend struct
*
* This function should be called after dvb_unregister_frontend(). It
* calls the SEC, tuner and demod release functions:
* &dvb_frontend_ops.release_sec, &dvb_frontend_ops.tuner_ops.release,
* &dvb_frontend_ops.analog_ops.release and &dvb_frontend_ops.release.
*
* If the driver is compiled with CONFIG_MEDIA_ATTACH, it also decreases
* the module reference count, needed to allow userspace to remove the
* previously used DVB frontend modules.
*/
void dvb_frontend_detach(struct dvb_frontend *fe);
/**
* dvb_frontend_suspend() - Suspends a Digital TV frontend
*
* @fe: pointer to the frontend struct
*
* This function prepares a Digital TV frontend to suspend.
*
* In order to prepare the tuner to suspend, if
* &dvb_frontend_ops.tuner_ops.suspend\(\) is available, it calls it. Otherwise,
* it will call &dvb_frontend_ops.tuner_ops.sleep\(\), if available.
*
* It will also call &dvb_frontend_ops.sleep\(\) to put the demod to suspend.
*
* The drivers should also call dvb_frontend_suspend\(\) as part of their
* handler for the &device_driver.suspend\(\).
*/
int dvb_frontend_suspend(struct dvb_frontend *fe);
/**
* dvb_frontend_resume() - Resumes a Digital TV frontend
*
* @fe: pointer to the frontend struct
*
* This function resumes the usual operation of the tuner after resume.
*
* In order to resume the frontend, it calls the demod &dvb_frontend_ops.init\(\).
*
* If &dvb_frontend_ops.tuner_ops.resume\(\) is available, It, it calls it.
* Otherwise,t will call &dvb_frontend_ops.tuner_ops.init\(\), if available.
*
* Once tuner and demods are resumed, it will enforce that the SEC voltage and
* tone are restored to their previous values and wake up the frontend's
* kthread in order to retune the frontend.
*
* The drivers should also call dvb_frontend_resume() as part of their
* handler for the &device_driver.resume\(\).
*/
int dvb_frontend_resume(struct dvb_frontend *fe);
/**
* dvb_frontend_reinitialise() - forces a reinitialisation at the frontend
*
* @fe: pointer to the frontend struct
*
* Calls &dvb_frontend_ops.init\(\) and &dvb_frontend_ops.tuner_ops.init\(\),
* and resets SEC tone and voltage (for Satellite systems).
*
* NOTE: Currently, this function is used only by one driver (budget-av).
* It seems to be due to address some special issue with that specific
* frontend.
*/
void dvb_frontend_reinitialise(struct dvb_frontend *fe);
/**
* dvb_frontend_sleep_until() - Sleep for the amount of time given by
* add_usec parameter
*
* @waketime: pointer to a struct ktime_t
* @add_usec: time to sleep, in microseconds
*
* This function is used to measure the time required for the
* %FE_DISHNETWORK_SEND_LEGACY_CMD ioctl to work. It needs to be as precise
* as possible, as it affects the detection of the dish tone command at the
* satellite subsystem.
*
* Its used internally by the DVB frontend core, in order to emulate
* %FE_DISHNETWORK_SEND_LEGACY_CMD using the &dvb_frontend_ops.set_voltage\(\)
* callback.
*
* NOTE: it should not be used at the drivers, as the emulation for the
* legacy callback is provided by the Kernel. The only situation where this
* should be at the drivers is when there are some bugs at the hardware that
* would prevent the core emulation to work. On such cases, the driver would
* be writing a &dvb_frontend_ops.dishnetwork_send_legacy_command\(\) and
* calling this function directly.
*/
void dvb_frontend_sleep_until(ktime_t *waketime, u32 add_usec);
#endif

2
dvb-core/dvb_math.c
View File

@@ -19,7 +19,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <asm/bug.h>
#include "dvb_math.h"
#include <media/dvb_math.h>
static const unsigned short logtable[256] = {
0x0000, 0x0171, 0x02e0, 0x044e, 0x05ba, 0x0725, 0x088e, 0x09f7,

66
dvb-core/dvb_math.h
View File

@@ -1,66 +0,0 @@
/*
* dvb-math provides some complex fixed-point math
* operations shared between the dvb related stuff
*
* Copyright (C) 2006 Christoph Pfister (christophpfister@gmail.com)
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
#ifndef __DVB_MATH_H
#define __DVB_MATH_H
#include <linux/types.h>
/**
* intlog2 - computes log2 of a value; the result is shifted left by 24 bits
*
* @value: The value (must be != 0)
*
* to use rational values you can use the following method:
*
* intlog2(value) = intlog2(value * 2^x) - x * 2^24
*
* Some usecase examples:
*
* intlog2(8) will give 3 << 24 = 3 * 2^24
*
* intlog2(9) will give 3 << 24 + ... = 3.16... * 2^24
*
* intlog2(1.5) = intlog2(3) - 2^24 = 0.584... * 2^24
*
*
* return: log2(value) * 2^24
*/
extern unsigned int intlog2(u32 value);
/**
* intlog10 - computes log10 of a value; the result is shifted left by 24 bits
*
* @value: The value (must be != 0)
*
* to use rational values you can use the following method:
*
* intlog10(value) = intlog10(value * 10^x) - x * 2^24
*
* An usecase example:
*
* intlog10(1000) will give 3 << 24 = 3 * 2^24
*
* due to the implementation intlog10(1000) might be not exactly 3 * 2^24
*
* look at intlog2 for similar examples
*
* return: log10(value) * 2^24
*/
extern unsigned int intlog10(u32 value);
#endif

110
dvb-core/dvb_net.c
View File

@@ -1,3 +1,4 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* dvb_net.c
*
@@ -13,18 +14,6 @@
* and Wolfram Stering <wstering@cosy.sbg.ac.at>
*
* ULE Decaps according to RFC 4326.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
* To obtain the license, point your browser to
* http://www.gnu.org/copyleft/gpl.html
*/
/*
@@ -38,7 +27,7 @@
* Competence Center for Advanced Satellite Communications.
* Bugfixes and robustness improvements.
* Filtering on dest MAC addresses, if present (D-Bit = 0)
* ULE_DEBUG compile-time option.
* DVB_ULE_DEBUG compile-time option.
* Apr 2006: cp v3: Bugfixes and compliency with RFC 4326 (ULE) by
* Christian Praehauser <cpraehaus@cosy.sbg.ac.at>,
* Paris Lodron University of Salzburg.
@@ -69,8 +58,8 @@
#include <linux/mutex.h>
#include <linux/sched.h>
#include "dvb_demux.h"
#include "dvb_net.h"
#include <media/dvb_demux.h>
#include <media/dvb_net.h>
static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt )
{
@@ -83,15 +72,20 @@ static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt )
#define DVB_NET_MULTICAST_MAX 10
#undef ULE_DEBUG
#undef DVB_ULE_DEBUG
#ifdef ULE_DEBUG
#ifdef DVB_ULE_DEBUG
/*
* The code inside DVB_ULE_DEBUG keeps a history of the
* last 100 TS cells processed.
*/
static unsigned char ule_hist[100*TS_SZ] = { 0 };
static unsigned char *ule_where = ule_hist, ule_dump;
static void hexdump(const unsigned char *buf, unsigned short len)
{
print_hex_dump_debug("", DUMP_PREFIX_OFFSET, 16, 1, buf, len, true);
}
#endif
struct dvb_net_priv {
@@ -130,7 +124,7 @@ struct dvb_net_priv {
};
/**
/*
* Determine the packet's protocol ID. The rule here is that we
* assume 802.3 if the type field is short enough to be a length.
* This is normal practice and works for any 'now in use' protocol.
@@ -160,7 +154,7 @@ static __be16 dvb_net_eth_type_trans(struct sk_buff *skb,
rawp = skb->data;
/**
/*
* This is a magic hack to spot IPX packets. Older Novell breaks
* the protocol design and runs IPX over 802.3 without an 802.2 LLC
* layer. We look for FFFF which isn't a used 802.2 SSAP/DSAP. This
@@ -169,7 +163,7 @@ static __be16 dvb_net_eth_type_trans(struct sk_buff *skb,
if (*(unsigned short *)rawp == 0xFFFF)
return htons(ETH_P_802_3);
/**
/*
* Real 802.2 LLC
*/
return htons(ETH_P_802_2);
@@ -220,7 +214,8 @@ static int ule_exthdr_padding(struct dvb_net_priv *p)
return 0;
}
/** Handle ULE extension headers.
/*
* Handle ULE extension headers.
* Function is called after a successful CRC32 verification of an ULE SNDU to complete its decoding.
* Returns: >= 0: nr. of bytes consumed by next extension header
* -1: Mandatory extension header that is not recognized or TEST SNDU; discard.
@@ -284,11 +279,9 @@ static int handle_ule_extensions( struct dvb_net_priv *p )
if (l < 0)
return l; /* Stop extension header processing and discard SNDU. */
total_ext_len += l;
#ifdef ULE_DEBUG
pr_debug("ule_next_hdr=%p, ule_sndu_type=%i, l=%i, total_ext_len=%i\n",
p->ule_next_hdr, (int)p->ule_sndu_type,
l, total_ext_len);
#endif
} while (p->ule_sndu_type < ETH_P_802_3_MIN);
@@ -296,7 +289,7 @@ static int handle_ule_extensions( struct dvb_net_priv *p )
}
/** Prepare for a new ULE SNDU: reset the decoder state. */
/* Prepare for a new ULE SNDU: reset the decoder state. */
static inline void reset_ule( struct dvb_net_priv *p )
{
p->ule_skb = NULL;
@@ -309,7 +302,7 @@ static inline void reset_ule( struct dvb_net_priv *p )
p->ule_bridged = 0;
}
/**
/*
* Decode ULE SNDUs according to draft-ietf-ipdvb-ule-03.txt from a sequence of
* TS cells of a single PID.
*/
@@ -324,29 +317,21 @@ struct dvb_net_ule_handle {
const u8 *ts, *ts_end, *from_where;
u8 ts_remain, how_much, new_ts;
bool error;
#ifdef ULE_DEBUG
/*
* The code inside ULE_DEBUG keeps a history of the
* last 100 TS cells processed.
*/
static unsigned char ule_hist[100*TS_SZ];
static unsigned char *ule_where = ule_hist, ule_dump;
#endif
};
static int dvb_net_ule_new_ts_cell(struct dvb_net_ule_handle *h)
{
/* We are about to process a new TS cell. */
#ifdef ULE_DEBUG
if (h->ule_where >= &h->ule_hist[100*TS_SZ])
h->ule_where = h->ule_hist;
memcpy(h->ule_where, h->ts, TS_SZ);
if (h->ule_dump) {
hexdump(h->ule_where, TS_SZ);
h->ule_dump = 0;
#ifdef DVB_ULE_DEBUG
if (ule_where >= &ule_hist[100*TS_SZ])
ule_where = ule_hist;
memcpy(ule_where, h->ts, TS_SZ);
if (ule_dump) {
hexdump(ule_where, TS_SZ);
ule_dump = 0;
}
h->ule_where += TS_SZ;
ule_where += TS_SZ;
#endif
/*
@@ -664,6 +649,7 @@ static int dvb_net_ule_should_drop(struct dvb_net_ule_handle *h)
static void dvb_net_ule_check_crc(struct dvb_net_ule_handle *h,
struct kvec iov[3],
u32 ule_crc, u32 expected_crc)
{
u8 dest_addr[ETH_ALEN];
@@ -676,22 +662,22 @@ static void dvb_net_ule_check_crc(struct dvb_net_ule_handle *h,
h->ts_remain > 2 ?
*(unsigned short *)h->from_where : 0);
#ifdef ULE_DEBUG
#ifdef DVB_ULE_DEBUG
hexdump(iov[0].iov_base, iov[0].iov_len);
hexdump(iov[1].iov_base, iov[1].iov_len);
hexdump(iov[2].iov_base, iov[2].iov_len);
if (h->ule_where == h->ule_hist) {
hexdump(&h->ule_hist[98*TS_SZ], TS_SZ);
hexdump(&h->ule_hist[99*TS_SZ], TS_SZ);
} else if (h->ule_where == &h->ule_hist[TS_SZ]) {
hexdump(&h->ule_hist[99*TS_SZ], TS_SZ);
hexdump(h->ule_hist, TS_SZ);
if (ule_where == ule_hist) {
hexdump(&ule_hist[98*TS_SZ], TS_SZ);
hexdump(&ule_hist[99*TS_SZ], TS_SZ);
} else if (ule_where == &ule_hist[TS_SZ]) {
hexdump(&ule_hist[99*TS_SZ], TS_SZ);
hexdump(ule_hist, TS_SZ);
} else {
hexdump(h->ule_where - TS_SZ - TS_SZ, TS_SZ);
hexdump(h->ule_where - TS_SZ, TS_SZ);
hexdump(ule_where - TS_SZ - TS_SZ, TS_SZ);
hexdump(ule_where - TS_SZ, TS_SZ);
}
h->ule_dump = 1;
ule_dump = 1;
#endif
h->dev->stats.rx_errors++;
@@ -709,11 +695,9 @@ static void dvb_net_ule_check_crc(struct dvb_net_ule_handle *h,
if (!h->priv->ule_dbit) {
if (dvb_net_ule_should_drop(h)) {
#ifdef ULE_DEBUG
netdev_dbg(h->dev,
"Dropping SNDU: MAC destination address does not match: dest addr: %pM, h->dev addr: %pM\n",
h->priv->ule_skb->data, h->dev->dev_addr);
#endif
dev_kfree_skb(h->priv->ule_skb);
return;
}
@@ -784,6 +768,7 @@ static void dvb_net_ule(struct net_device *dev, const u8 *buf, size_t buf_len)
struct dvb_net_ule_handle h = {
.dev = dev,
.priv = netdev_priv(dev),
.ethh = NULL,
.buf = buf,
.buf_len = buf_len,
.skipped = 0L,
@@ -793,11 +778,7 @@ static void dvb_net_ule(struct net_device *dev, const u8 *buf, size_t buf_len)
.ts_remain = 0,
.how_much = 0,
.new_ts = 1,
.ethh = NULL,
.error = false,
#ifdef ULE_DEBUG
.ule_where = ule_hist,
#endif
};
/*
@@ -869,7 +850,7 @@ static void dvb_net_ule(struct net_device *dev, const u8 *buf, size_t buf_len)
*(tail - 2) << 8 |
*(tail - 1);
dvb_net_ule_check_crc(&h, ule_crc, expected_crc);
dvb_net_ule_check_crc(&h, iov, ule_crc, expected_crc);
/* Prepare for next SNDU. */
reset_ule(h.priv);
@@ -902,7 +883,8 @@ static void dvb_net_ule(struct net_device *dev, const u8 *buf, size_t buf_len)
static int dvb_net_ts_callback(const u8 *buffer1, size_t buffer1_len,
const u8 *buffer2, size_t buffer2_len,
struct dmx_ts_feed *feed)
struct dmx_ts_feed *feed,
u32 *buffer_flags)
{
struct net_device *dev = feed->priv;
@@ -1010,12 +992,12 @@ static void dvb_net_sec(struct net_device *dev,
}
static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len,
const u8 *buffer2, size_t buffer2_len,
struct dmx_section_filter *filter)
const u8 *buffer2, size_t buffer2_len,
struct dmx_section_filter *filter, u32 *buffer_flags)
{
struct net_device *dev = filter->priv;
/**
/*
* we rely on the DVB API definition where exactly one complete
* section is delivered in buffer1
*/
@@ -1023,7 +1005,7 @@ static int dvb_net_sec_callback(const u8 *buffer1, size_t buffer1_len,
return 0;
}
static int dvb_net_tx(struct sk_buff *skb, struct net_device *dev)
static netdev_tx_t dvb_net_tx(struct sk_buff *skb, struct net_device *dev)
{
dev_kfree_skb(skb);
return NETDEV_TX_OK;

63
dvb-core/dvb_net.h
View File

@@ -1,63 +0,0 @@
/*
* dvb_net.h
*
* Copyright (C) 2001 Ralph Metzler for convergence integrated media GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
*
*/
#ifndef _DVB_NET_H_
#define _DVB_NET_H_
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include "dvbdev.h"
#define DVB_NET_DEVICES_MAX 10
#ifdef CONFIG_DVB_NET
struct dvb_net {
struct dvb_device *dvbdev;
struct net_device *device[DVB_NET_DEVICES_MAX];
int state[DVB_NET_DEVICES_MAX];
unsigned int exit:1;
struct dmx_demux *demux;
struct mutex ioctl_mutex;
};
void dvb_net_release(struct dvb_net *);
int dvb_net_init(struct dvb_adapter *, struct dvb_net *, struct dmx_demux *);
#else
struct dvb_net {
struct dvb_device *dvbdev;
};
static inline void dvb_net_release(struct dvb_net *dvbnet)
{
}
static inline int dvb_net_init(struct dvb_adapter *adap,
struct dvb_net *dvbnet, struct dmx_demux *dmx)
{
return 0;
}
#endif /* ifdef CONFIG_DVB_NET */
#endif

4
dvb-core/dvb_ringbuffer.c
View File

@@ -34,7 +34,7 @@
#include <linux/uaccess.h>
#endif
#include "dvb_ringbuffer.h"
#include <media/dvb_ringbuffer.h>
#define PKT_READY 0
#define PKT_DISPOSED 1
@@ -63,7 +63,7 @@ int dvb_ringbuffer_empty(struct dvb_ringbuffer *rbuf)
* this pairs with smp_store_release() in dvb_ringbuffer_write(),
* dvb_ringbuffer_write_user(), or dvb_ringbuffer_reset()
*
* for memory barriers also see Documentation/circular-buffers.txt
* for memory barriers also see Documentation/core-api/circular-buffers.txt
*/
return (rbuf->pread == smp_load_acquire(&rbuf->pwrite));
#endif

280
dvb-core/dvb_ringbuffer.h
View File

@@ -1,280 +0,0 @@
/*
*
* dvb_ringbuffer.h: ring buffer implementation for the dvb driver
*
* Copyright (C) 2003 Oliver Endriss
* Copyright (C) 2004 Andrew de Quincey
*
* based on code originally found in av7110.c & dvb_ci.c:
* Copyright (C) 1999-2003 Ralph Metzler & Marcus Metzler
* for convergence integrated media GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
#ifndef _DVB_RINGBUFFER_H_
#define _DVB_RINGBUFFER_H_
#include <linux/spinlock.h>
#include <linux/wait.h>
/**
* struct dvb_ringbuffer - Describes a ring buffer used at DVB framework
*
* @data: Area were the ringbuffer data is written
* @size: size of the ringbuffer
* @pread: next position to read
* @pwrite: next position to write
* @error: used by ringbuffer clients to indicate that an error happened.
* @queue: Wait queue used by ringbuffer clients to indicate when buffer
* was filled
* @lock: Spinlock used to protect the ringbuffer
*/
struct dvb_ringbuffer {
u8 *data;
ssize_t size;
ssize_t pread;
ssize_t pwrite;
int error;
wait_queue_head_t queue;
spinlock_t lock;
};
#define DVB_RINGBUFFER_PKTHDRSIZE 3
/**
* dvb_ringbuffer_init - initialize ring buffer, lock and queue
*
* @rbuf: pointer to struct dvb_ringbuffer
* @data: pointer to the buffer where the data will be stored
* @len: bytes from ring buffer into @buf
*/
extern void dvb_ringbuffer_init(struct dvb_ringbuffer *rbuf, void *data,
size_t len);
/**
* dvb_ringbuffer_empty - test whether buffer is empty
*
* @rbuf: pointer to struct dvb_ringbuffer
*/
extern int dvb_ringbuffer_empty(struct dvb_ringbuffer *rbuf);
/**
* dvb_ringbuffer_free - returns the number of free bytes in the buffer
*
* @rbuf: pointer to struct dvb_ringbuffer
*
* Return: number of free bytes in the buffer
*/
extern ssize_t dvb_ringbuffer_free(struct dvb_ringbuffer *rbuf);
/**
* dvb_ringbuffer_avail - returns the number of bytes waiting in the buffer
*
* @rbuf: pointer to struct dvb_ringbuffer
*
* Return: number of bytes waiting in the buffer
*/
extern ssize_t dvb_ringbuffer_avail(struct dvb_ringbuffer *rbuf);
/**
* dvb_ringbuffer_reset - resets the ringbuffer to initial state
*
* @rbuf: pointer to struct dvb_ringbuffer
*
* Resets the read and write pointers to zero and flush the buffer.
*
* This counts as a read and write operation
*/
extern void dvb_ringbuffer_reset(struct dvb_ringbuffer *rbuf);
/*
* read routines & macros
*/
/**
* dvb_ringbuffer_flush - flush buffer
*
* @rbuf: pointer to struct dvb_ringbuffer
*/
extern void dvb_ringbuffer_flush(struct dvb_ringbuffer *rbuf);
/**
* dvb_ringbuffer_flush_spinlock_wakeup- flush buffer protected by spinlock
* and wake-up waiting task(s)
*
* @rbuf: pointer to struct dvb_ringbuffer
*/
extern void dvb_ringbuffer_flush_spinlock_wakeup(struct dvb_ringbuffer *rbuf);
/**
* DVB_RINGBUFFER_PEEK - peek at byte @offs in the buffer
*
* @rbuf: pointer to struct dvb_ringbuffer
* @offs: offset inside the ringbuffer
*/
#define DVB_RINGBUFFER_PEEK(rbuf, offs) \
((rbuf)->data[((rbuf)->pread + (offs)) % (rbuf)->size])
/**
* DVB_RINGBUFFER_SKIP - advance read ptr by @num bytes
*
* @rbuf: pointer to struct dvb_ringbuffer
* @num: number of bytes to advance
*/
#define DVB_RINGBUFFER_SKIP(rbuf, num) {\
(rbuf)->pread = ((rbuf)->pread + (num)) % (rbuf)->size;\
}
/**
* dvb_ringbuffer_read_user - Reads a buffer into a user pointer
*
* @rbuf: pointer to struct dvb_ringbuffer
* @buf: pointer to the buffer where the data will be stored
* @len: bytes from ring buffer into @buf
*
* This variant assumes that the buffer is a memory at the userspace. So,
* it will internally call copy_to_user().
*
* Return: number of bytes transferred or -EFAULT
*/
extern ssize_t dvb_ringbuffer_read_user(struct dvb_ringbuffer *rbuf,
u8 __user *buf, size_t len);
/**
* dvb_ringbuffer_read - Reads a buffer into a pointer
*
* @rbuf: pointer to struct dvb_ringbuffer
* @buf: pointer to the buffer where the data will be stored
* @len: bytes from ring buffer into @buf
*
* This variant assumes that the buffer is a memory at the Kernel space
*
* Return: number of bytes transferred or -EFAULT
*/
extern void dvb_ringbuffer_read(struct dvb_ringbuffer *rbuf,
u8 *buf, size_t len);
/*
* write routines & macros
*/
/**
* DVB_RINGBUFFER_WRITE_BYTE - write single byte to ring buffer
*
* @rbuf: pointer to struct dvb_ringbuffer
* @byte: byte to write
*/
#define DVB_RINGBUFFER_WRITE_BYTE(rbuf, byte) \
{ (rbuf)->data[(rbuf)->pwrite] = (byte); \
(rbuf)->pwrite = ((rbuf)->pwrite + 1) % (rbuf)->size; }
/**
* dvb_ringbuffer_write - Writes a buffer into the ringbuffer
*
* @rbuf: pointer to struct dvb_ringbuffer
* @buf: pointer to the buffer where the data will be read
* @len: bytes from ring buffer into @buf
*
* This variant assumes that the buffer is a memory at the Kernel space
*
* return: number of bytes transferred or -EFAULT
*/
extern ssize_t dvb_ringbuffer_write(struct dvb_ringbuffer *rbuf, const u8 *buf,
size_t len);
/**
* dvb_ringbuffer_write_user - Writes a buffer received via a user pointer
*
* @rbuf: pointer to struct dvb_ringbuffer
* @buf: pointer to the buffer where the data will be read
* @len: bytes from ring buffer into @buf
*
* This variant assumes that the buffer is a memory at the userspace. So,
* it will internally call copy_from_user().
*
* Return: number of bytes transferred or -EFAULT
*/
extern ssize_t dvb_ringbuffer_write_user(struct dvb_ringbuffer *rbuf,
const u8 __user *buf, size_t len);
/**
* dvb_ringbuffer_pkt_write - Write a packet into the ringbuffer.
*
* @rbuf: Ringbuffer to write to.
* @buf: Buffer to write.
* @len: Length of buffer (currently limited to 65535 bytes max).
*
* Return: Number of bytes written, or -EFAULT, -ENOMEM, -EVINAL.
*/
extern ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8 *buf,
size_t len);
/**
* dvb_ringbuffer_pkt_read_user - Read from a packet in the ringbuffer.
*
* @rbuf: Ringbuffer concerned.
* @idx: Packet index as returned by dvb_ringbuffer_pkt_next().
* @offset: Offset into packet to read from.
* @buf: Destination buffer for data.
* @len: Size of destination buffer.
*
* Return: Number of bytes read, or -EFAULT.
*
* .. note::
*
* unlike dvb_ringbuffer_read(), this does **NOT** update the read pointer
* in the ringbuffer. You must use dvb_ringbuffer_pkt_dispose() to mark a
* packet as no longer required.
*/
extern ssize_t dvb_ringbuffer_pkt_read_user(struct dvb_ringbuffer *rbuf,
size_t idx,
int offset, u8 __user *buf,
size_t len);
/**
* dvb_ringbuffer_pkt_read - Read from a packet in the ringbuffer.
* Note: unlike dvb_ringbuffer_read_user(), this DOES update the read pointer
* in the ringbuffer.
*
* @rbuf: Ringbuffer concerned.
* @idx: Packet index as returned by dvb_ringbuffer_pkt_next().
* @offset: Offset into packet to read from.
* @buf: Destination buffer for data.
* @len: Size of destination buffer.
*
* Return: Number of bytes read, or -EFAULT.
*/
extern ssize_t dvb_ringbuffer_pkt_read(struct dvb_ringbuffer *rbuf, size_t idx,
int offset, u8 *buf, size_t len);
/**
* dvb_ringbuffer_pkt_dispose - Dispose of a packet in the ring buffer.
*
* @rbuf: Ring buffer concerned.
* @idx: Packet index as returned by dvb_ringbuffer_pkt_next().
*/
extern void dvb_ringbuffer_pkt_dispose(struct dvb_ringbuffer *rbuf, size_t idx);
/**
* dvb_ringbuffer_pkt_next - Get the index of the next packet in a ringbuffer.
*
* @rbuf: Ringbuffer concerned.
* @idx: Previous packet index, or -1 to return the first packet index.
* @pktlen: On success, will be updated to contain the length of the packet
* in bytes.
* returns Packet index (if >=0), or -1 if no packets available.
*/
extern ssize_t dvb_ringbuffer_pkt_next(struct dvb_ringbuffer *rbuf,
size_t idx, size_t *pktlen);
#endif /* _DVB_RINGBUFFER_H_ */

160
dvb-core/dvbdev.c
View File

@@ -24,6 +24,7 @@
#include <linux/string.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/device.h>
@@ -31,7 +32,7 @@
#include <linux/cdev.h>
#include <linux/mutex.h>
#include <linux/version.h>
#include "dvbdev.h"
#include <media/dvbdev.h>
#if (LINUX_VERSION_CODE > KERNEL_VERSION(4,0,0))
/* Due to enum tuner_pad_index */
@@ -54,8 +55,19 @@ static LIST_HEAD(dvb_adapter_list);
static DEFINE_MUTEX(dvbdev_register_lock);
static const char * const dnames[] = {
"video", "audio", "sec", "frontend", "demux", "dvr", "ca",
"net", "osd", "ci", "mod", "ns", "nsd"
[DVB_DEVICE_VIDEO] = "video",
[DVB_DEVICE_AUDIO] = "audio",
[DVB_DEVICE_SEC] = "sec",
[DVB_DEVICE_FRONTEND] = "frontend",
[DVB_DEVICE_DEMUX] = "demux",
[DVB_DEVICE_DVR] = "dvr",
[DVB_DEVICE_CA] = "ca",
[DVB_DEVICE_NET] = "net",
[DVB_DEVICE_OSD] = "osd",
[DVB_DEVICE_CI] = "ci",
[DVB_DEVICE_MOD] = "mod",
[DVB_DEVICE_NS] = "ns",
[DVB_DEVICE_NSD] = "nsd",
};
#ifdef CONFIG_DVB_DYNAMIC_MINORS
@@ -63,7 +75,22 @@ static const char * const dnames[] = {
#define DVB_MAX_IDS MAX_DVB_MINORS
#else
#define DVB_MAX_IDS 4
#define nums2minor(num, type, id) ((num << 6) | (id << 4) | type)
static const u8 minor_type[] = {
[DVB_DEVICE_VIDEO] = 0,
[DVB_DEVICE_AUDIO] = 1,
[DVB_DEVICE_SEC] = 2,
[DVB_DEVICE_FRONTEND] = 3,
[DVB_DEVICE_DEMUX] = 4,
[DVB_DEVICE_DVR] = 5,
[DVB_DEVICE_CA] = 6,
[DVB_DEVICE_NET] = 7,
[DVB_DEVICE_OSD] = 8,
};
#define nums2minor(num, type, id) \
(((num) << 6) | ((id) << 4) | minor_type[type])
#define MAX_DVB_MINORS (DVB_MAX_ADAPTERS*64)
#endif
@@ -319,8 +346,10 @@ static int dvb_create_media_entity(struct dvb_device *dvbdev,
if (npads) {
dvbdev->pads = kcalloc(npads, sizeof(*dvbdev->pads),
GFP_KERNEL);
if (!dvbdev->pads)
if (!dvbdev->pads){
kfree(dvbdev->entity);
return -ENOMEM;
}
}
switch (type) {
@@ -420,8 +449,10 @@ static int dvb_register_media_device(struct dvb_device *dvbdev,
if (!dvbdev->entity)
return 0;
link = media_create_intf_link(dvbdev->entity, &dvbdev->intf_devnode->intf,
MEDIA_LNK_FL_ENABLED);
link = media_create_intf_link(dvbdev->entity,
&dvbdev->intf_devnode->intf,
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (!link)
return -ENOMEM;
#endif
@@ -429,8 +460,8 @@ static int dvb_register_media_device(struct dvb_device *dvbdev,
}
int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
const struct dvb_device *template, void *priv, int type,
int demux_sink_pads)
const struct dvb_device *template, void *priv,
enum dvb_device_type type, int demux_sink_pads)
{
struct dvb_device *dvbdev;
struct file_operations *dvbdevfops;
@@ -454,7 +485,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
return -ENOMEM;
}
dvbdevfops = kzalloc(sizeof(struct file_operations), GFP_KERNEL);
dvbdevfops = kmemdup(template->fops, sizeof(*dvbdevfops), GFP_KERNEL);
if (!dvbdevfops){
kfree (dvbdev);
@@ -470,7 +501,6 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
dvbdev->fops = dvbdevfops;
init_waitqueue_head (&dvbdev->wait_queue);
memcpy(dvbdevfops, template->fops, sizeof(struct file_operations));
dvbdevfops->owner = adap->module;
list_add_tail (&dvbdev->list_head, &adap->device_list);
@@ -504,7 +534,6 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
dvb_media_device_free(dvbdev);
kfree(dvbdevfops);
kfree(dvbdev);
up_write(&minor_rwsem);
mutex_unlock(&dvbdev_register_lock);
return ret;
}
@@ -579,7 +608,8 @@ static int dvb_create_io_intf_links(struct dvb_adapter *adap,
if (strncmp(entity->name, name, strlen(name)))
continue;
link = media_create_intf_link(entity, intf,
MEDIA_LNK_FL_ENABLED);
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (!link)
return -ENOMEM;
}
@@ -598,8 +628,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap,
unsigned demux_pad = 0;
unsigned dvr_pad = 0;
unsigned ntuner = 0, ndemod = 0;
u16 source_pad = 0;
int ret;
int ret, pad_source, pad_sink;
static const char *connector_name = "Television";
if (!mdev)
@@ -660,17 +689,6 @@ int dvb_create_media_graph(struct dvb_adapter *adap,
return ret;
if (!ntuner) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,2,0))
if ((ret = media_get_pad_index(tuner, true,
PAD_SIGNAL_ANALOG)) < 0)
return ret;
source_pad = (u16) ret;
ret = 0;
#else
source_pad = TUNER_PAD_RF_INPUT;
#endif
ret = media_create_pad_links(mdev,
MEDIA_ENT_F_CONN_RF,
conn, 0,
@@ -679,32 +697,40 @@ int dvb_create_media_graph(struct dvb_adapter *adap,
MEDIA_LNK_FL_ENABLED,
false);
} else {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,2,0))
pad_sink = media_get_pad_index(tuner, true,
PAD_SIGNAL_ANALOG);
if (pad_sink < 0)
return -EINVAL;
ret = media_create_pad_links(mdev,
MEDIA_ENT_F_CONN_RF,
conn, 0,
MEDIA_ENT_F_TUNER,
tuner, source_pad,
tuner, pad_sink,
MEDIA_LNK_FL_ENABLED,
false);
#else
pad_sink = TUNER_PAD_RF_INPUT;
#endif
}
if (ret)
return ret;
}
if (ntuner && ndemod) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,2,0))
if ((ret = media_get_pad_index(tuner, true, PAD_SIGNAL_ANALOG)) < 0)
return ret;
source_pad = (u16) ret;
ret = 0;
/* NOTE: first found tuner source pad presumed correct */
pad_source = media_get_pad_index(tuner, false,
PAD_SIGNAL_ANALOG);
if (pad_source < 0)
return -EINVAL;
#else
source_pad = TUNER_PAD_OUTPUT;
pad_source = TUNER_PAD_OUTPUT;
#endif
ret = media_create_pad_links(mdev,
MEDIA_ENT_F_TUNER,
tuner, source_pad,
tuner, pad_source,
MEDIA_ENT_F_DTV_DEMOD,
demod, 0, MEDIA_LNK_FL_ENABLED,
false);
@@ -757,14 +783,16 @@ int dvb_create_media_graph(struct dvb_adapter *adap,
media_device_for_each_intf(intf, mdev) {
if (intf->type == MEDIA_INTF_T_DVB_CA && ca) {
link = media_create_intf_link(ca, intf,
MEDIA_LNK_FL_ENABLED);
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (!link)
return -ENOMEM;
}
if (intf->type == MEDIA_INTF_T_DVB_FE && tuner) {
link = media_create_intf_link(tuner, intf,
MEDIA_LNK_FL_ENABLED);
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (!link)
return -ENOMEM;
}
@@ -776,7 +804,8 @@ int dvb_create_media_graph(struct dvb_adapter *adap,
*/
if (intf->type == MEDIA_INTF_T_DVB_DVR && demux) {
link = media_create_intf_link(demux, intf,
MEDIA_LNK_FL_ENABLED);
MEDIA_LNK_FL_ENABLED |
MEDIA_LNK_FL_IMMUTABLE);
if (!link)
return -ENOMEM;
}
@@ -862,6 +891,10 @@ int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
adap->mfe_dvbdev = NULL;
mutex_init (&adap->mfe_lock);
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
mutex_init(&adap->mdev_lock);
#endif
list_add_tail (&adap->list_head, &dvb_adapter_list);
mutex_unlock(&dvbdev_register_lock);
@@ -882,7 +915,7 @@ EXPORT_SYMBOL(dvb_unregister_adapter);
/* if the miracle happens and "generic_usercopy()" is included into
the kernel, then this can vanish. please don't make the mistake and
define this as video_usercopy(). this will introduce a dependecy
define this as video_usercopy(). this will introduce a dependency
to the v4l "videodev.o" module, which is unnecessary for some
cards (ie. the budget dvb-cards don't need the v4l module...) */
int dvb_usercopy(struct file *file,
@@ -946,6 +979,57 @@ out:
}
EXPORT_SYMBOL(dvb_usercopy);
#if IS_ENABLED(CONFIG_I2C)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,3,0))
struct i2c_client *dvb_module_probe(const char *module_name,
const char *name,
struct i2c_adapter *adap,
unsigned char addr,
void *platform_data)
{
struct i2c_client *client;
struct i2c_board_info *board_info;
board_info = kzalloc(sizeof(*board_info), GFP_KERNEL);
if (!board_info)
return NULL;
if (name)
strscpy(board_info->type, name, I2C_NAME_SIZE);
else
strscpy(board_info->type, module_name, I2C_NAME_SIZE);
board_info->addr = addr;
board_info->platform_data = platform_data;
request_module(module_name);
client = i2c_new_client_device(adap, board_info);
if (!i2c_client_has_driver(client)) {
kfree(board_info);
return NULL;
}
if (!try_module_get(client->dev.driver->owner)) {
i2c_unregister_device(client);
client = NULL;
}
kfree(board_info);
return client;
}
EXPORT_SYMBOL_GPL(dvb_module_probe);
void dvb_module_release(struct i2c_client *client)
{
if (!client)
return;
module_put(client->dev.driver->owner);
i2c_unregister_device(client);
}
EXPORT_SYMBOL_GPL(dvb_module_release);
#endif
#endif
static int dvb_uevent(struct device *dev, struct kobj_uevent_env *env)
{
struct dvb_device *dvbdev = dev_get_drvdata(dev);

322
dvb-core/dvbdev.h
View File

@@ -1,322 +0,0 @@
/*
* dvbdev.h
*
* Copyright (C) 2000 Ralph Metzler & Marcus Metzler
* for convergence integrated media GmbH
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Lesser Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* 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.
*
*/
#ifndef _DVBDEV_H_
#define _DVBDEV_H_
#include <linux/types.h>
#include <linux/poll.h>
#include <linux/fs.h>
#include <linux/list.h>
#include <media/media-device.h>
#define DVB_MAJOR 212
#if defined(CONFIG_DVB_MAX_ADAPTERS) && CONFIG_DVB_MAX_ADAPTERS > 0
#define DVB_MAX_ADAPTERS CONFIG_DVB_MAX_ADAPTERS
#else
#define DVB_MAX_ADAPTERS 64
#endif
#define DVB_UNSET (-1)
#define DVB_DEVICE_VIDEO 0
#define DVB_DEVICE_AUDIO 1
#define DVB_DEVICE_SEC 2
#define DVB_DEVICE_FRONTEND 3
#define DVB_DEVICE_DEMUX 4
#define DVB_DEVICE_DVR 5
#define DVB_DEVICE_CA 6
#define DVB_DEVICE_NET 7
#define DVB_DEVICE_OSD 8
#define DVB_DEVICE_CI 9
#define DVB_DEVICE_MOD 10
#define DVB_DEVICE_NS 11
#define DVB_DEVICE_NSD 12
#define DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr) \
static short adapter_nr[] = \
{[0 ... (DVB_MAX_ADAPTERS - 1)] = DVB_UNSET }; \
module_param_array(adapter_nr, short, NULL, 0444); \
MODULE_PARM_DESC(adapter_nr, "DVB adapter numbers")
struct dvb_frontend;
/**
* struct dvb_adapter - represents a Digital TV adapter using Linux DVB API
*
* @num: Number of the adapter
* @list_head: List with the DVB adapters
* @device_list: List with the DVB devices
* @name: Name of the adapter
* @proposed_mac: proposed MAC address for the adapter
* @priv: private data
* @device: pointer to struct device
* @module: pointer to struct module
* @mfe_shared: mfe shared: indicates mutually exclusive frontends
* Thie usage of this flag is currently deprecated
* @mfe_dvbdev: Frontend device in use, in the case of MFE
* @mfe_lock: Lock to prevent using the other frontends when MFE is
* used.
* @mdev: pointer to struct media_device, used when the media
* controller is used.
* @conn: RF connector. Used only if the device has no separate
* tuner.
* @conn_pads: pointer to struct media_pad associated with @conn;
*/
struct dvb_adapter {
int num;
struct list_head list_head;
struct list_head device_list;
const char *name;
u8 proposed_mac [6];
void* priv;
struct device *device;
struct module *module;
int mfe_shared; /* indicates mutually exclusive frontends */
struct dvb_device *mfe_dvbdev; /* frontend device in use */
struct mutex mfe_lock; /* access lock for thread creation */
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
struct media_device *mdev;
struct media_entity *conn;
struct media_pad *conn_pads;
#endif
};
/**
* struct dvb_device - represents a DVB device node
*
* @list_head: List head with all DVB devices
* @fops: pointer to struct file_operations
* @adapter: pointer to the adapter that holds this device node
* @type: type of the device: DVB_DEVICE_SEC, DVB_DEVICE_FRONTEND,
* DVB_DEVICE_DEMUX, DVB_DEVICE_DVR, DVB_DEVICE_CA, DVB_DEVICE_NET
* @minor: devnode minor number. Major number is always DVB_MAJOR.
* @id: device ID number, inside the adapter
* @readers: Initialized by the caller. Each call to open() in Read Only mode
* decreases this counter by one.
* @writers: Initialized by the caller. Each call to open() in Read/Write
* mode decreases this counter by one.
* @users: Initialized by the caller. Each call to open() in any mode
* decreases this counter by one.
* @wait_queue: wait queue, used to wait for certain events inside one of
* the DVB API callers
* @kernel_ioctl: callback function used to handle ioctl calls from userspace.
* @name: Name to be used for the device at the Media Controller
* @entity: pointer to struct media_entity associated with the device node
* @pads: pointer to struct media_pad associated with @entity;
* @priv: private data
* @intf_devnode: Pointer to media_intf_devnode. Used by the dvbdev core to
* store the MC device node interface
* @tsout_num_entities: Number of Transport Stream output entities
* @tsout_entity: array with MC entities associated to each TS output node
* @tsout_pads: array with the source pads for each @tsout_entity
*
* This structure is used by the DVB core (frontend, CA, net, demux) in
* order to create the device nodes. Usually, driver should not initialize
* this struct diretly.
*/
struct dvb_device {
struct list_head list_head;
const struct file_operations *fops;
struct dvb_adapter *adapter;
int type;
int minor;
u32 id;
/* in theory, 'users' can vanish now,
but I don't want to change too much now... */
int readers;
int writers;
int users;
wait_queue_head_t wait_queue;
/* don't really need those !? -- FIXME: use video_usercopy */
int (*kernel_ioctl)(struct file *file, unsigned int cmd, void *arg);
/* Needed for media controller register/unregister */
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
const char *name;
/* Allocated and filled inside dvbdev.c */
struct media_intf_devnode *intf_devnode;
unsigned tsout_num_entities;
struct media_entity *entity, *tsout_entity;
struct media_pad *pads, *tsout_pads;
#endif
void *priv;
};
/**
* dvb_register_adapter - Registers a new DVB adapter
*
* @adap: pointer to struct dvb_adapter
* @name: Adapter's name
* @module: initialized with THIS_MODULE at the caller
* @device: pointer to struct device that corresponds to the device driver
* @adapter_nums: Array with a list of the numbers for @dvb_register_adapter;
* to select among them. Typically, initialized with:
* DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nums)
*/
int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
struct module *module, struct device *device,
short *adapter_nums);
/**
* dvb_unregister_adapter - Unregisters a DVB adapter
*
* @adap: pointer to struct dvb_adapter
*/
int dvb_unregister_adapter(struct dvb_adapter *adap);
/**
* dvb_register_device - Registers a new DVB device
*
* @adap: pointer to struct dvb_adapter
* @pdvbdev: pointer to the place where the new struct dvb_device will be
* stored
* @template: Template used to create &pdvbdev;
* @priv: private data
* @type: type of the device: %DVB_DEVICE_SEC, %DVB_DEVICE_FRONTEND,
* %DVB_DEVICE_DEMUX, %DVB_DEVICE_DVR, %DVB_DEVICE_CA,
* %DVB_DEVICE_NET
* @demux_sink_pads: Number of demux outputs, to be used to create the TS
* outputs via the Media Controller.
*/
int dvb_register_device(struct dvb_adapter *adap,
struct dvb_device **pdvbdev,
const struct dvb_device *template,
void *priv,
int type,
int demux_sink_pads);
/**
* dvb_remove_device - Remove a registered DVB device
*
* This does not free memory. To do that, call dvb_free_device().
*
* @dvbdev: pointer to struct dvb_device
*/
void dvb_remove_device(struct dvb_device *dvbdev);
/**
* dvb_free_device - Free memory occupied by a DVB device.
*
* Call dvb_unregister_device() before calling this function.
*
* @dvbdev: pointer to struct dvb_device
*/
void dvb_free_device(struct dvb_device *dvbdev);
/**
* dvb_unregister_device - Unregisters a DVB device
*
* This is a combination of dvb_remove_device() and dvb_free_device().
* Using this function is usually a mistake, and is often an indicator
* for a use-after-free bug (when a userspace process keeps a file
* handle to a detached device).
*
* @dvbdev: pointer to struct dvb_device
*/
void dvb_unregister_device(struct dvb_device *dvbdev);
#ifdef CONFIG_MEDIA_CONTROLLER_DVB
/**
* dvb_create_media_graph - Creates media graph for the Digital TV part of the
* device.
*
* @adap: pointer to struct dvb_adapter
* @create_rf_connector: if true, it creates the RF connector too
*
* This function checks all DVB-related functions at the media controller
* entities and creates the needed links for the media graph. It is
* capable of working with multiple tuners or multiple frontends, but it
* won't create links if the device has multiple tuners and multiple frontends
* or if the device has multiple muxes. In such case, the caller driver should
* manually create the remaining links.
*/
__must_check int dvb_create_media_graph(struct dvb_adapter *adap,
bool create_rf_connector);
static inline void dvb_register_media_controller(struct dvb_adapter *adap,
struct media_device *mdev)
{
adap->mdev = mdev;
}
static inline struct media_device
*dvb_get_media_controller(struct dvb_adapter *adap)
{
return adap->mdev;
}
#else
static inline
int dvb_create_media_graph(struct dvb_adapter *adap,
bool create_rf_connector)
{
return 0;
};
#define dvb_register_media_controller(a, b) {}
#define dvb_get_media_controller(a) NULL
#endif
int dvb_generic_open (struct inode *inode, struct file *file);
int dvb_generic_release (struct inode *inode, struct file *file);
long dvb_generic_ioctl (struct file *file,
unsigned int cmd, unsigned long arg);
/* we don't mess with video_usercopy() any more,
we simply define out own dvb_usercopy(), which will hopefully become
generic_usercopy() someday... */
int dvb_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
int (*func)(struct file *file, unsigned int cmd, void *arg));
/** generic DVB attach function. */
#ifdef CONFIG_MEDIA_ATTACH
#define dvb_attach(FUNCTION, ARGS...) ({ \
void *__r = NULL; \
typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
if (__a) { \
__r = (void *) __a(ARGS); \
if (__r == NULL) \
symbol_put(FUNCTION); \
} else { \
printk(KERN_ERR "DVB: Unable to find symbol "#FUNCTION"()\n"); \
} \
__r; \
})
#define dvb_detach(FUNC) symbol_put_addr(FUNC)
#else
#define dvb_attach(FUNCTION, ARGS...) ({ \
FUNCTION(ARGS); \
})
#define dvb_detach(FUNC) {}
#endif
#endif /* #ifndef _DVBDEV_H_ */