path: root/drivers/media/pci/cx18/cx18-driver.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *  cx18 driver internal defines and structures
 *
 *  Derived from ivtv-driver.h
 *
 *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
 *  Copyright (C) 2008  Andy Walls <awalls@md.metrocast.net>
 */

#ifndef CX18_DRIVER_H
#define CX18_DRIVER_H

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/sched/signal.h>
#include <linux/fs.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/spinlock.h>
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <linux/list.h>
#include <linux/unistd.h>
#include <linux/pagemap.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
#include <linux/slab.h>
#include <asm/byteorder.h>

#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fh.h>
#include <media/tuner.h>
#include <media/i2c/ir-kbd-i2c.h>
#include "cx18-mailbox.h"
#include "cx18-av-core.h"
#include "cx23418.h"

/* DVB */
#include <media/demux.h>
#include <media/dmxdev.h>
#include <media/dvb_demux.h>
#include <media/dvb_frontend.h>
#include <media/dvb_net.h>
#include <media/dvbdev.h>

/* Videobuf / YUV support */
#include <media/videobuf-core.h>
#include <media/videobuf-vmalloc.h>

#ifndef CONFIG_PCI
#  error "This driver requires kernel PCI support."
#endif

#define CX18_MEM_OFFSET	0x00000000
#define CX18_MEM_SIZE	0x04000000
#define CX18_REG_OFFSET	0x02000000

/* Maximum cx18 driver instances. */
#define CX18_MAX_CARDS 32

/* Supported cards */
#define CX18_CARD_HVR_1600_ESMT	      0	/* Hauppauge HVR 1600 (ESMT memory) */
#define CX18_CARD_HVR_1600_SAMSUNG    1	/* Hauppauge HVR 1600 (Samsung memory) */
#define CX18_CARD_COMPRO_H900	      2	/* Compro VideoMate H900 */
#define CX18_CARD_YUAN_MPC718	      3	/* Yuan MPC718 */
#define CX18_CARD_CNXT_RAPTOR_PAL     4	/* Conexant Raptor PAL */
#define CX18_CARD_TOSHIBA_QOSMIO_DVBT 5 /* Toshiba Qosmio Interal DVB-T/Analog*/
#define CX18_CARD_LEADTEK_PVR2100     6 /* Leadtek WinFast PVR2100 */
#define CX18_CARD_LEADTEK_DVR3100H    7 /* Leadtek WinFast DVR3100 H */
#define CX18_CARD_GOTVIEW_PCI_DVD3    8 /* GoTView PCI DVD3 Hybrid */
#define CX18_CARD_HVR_1600_S5H1411    9 /* Hauppauge HVR 1600 s5h1411/tda18271*/
#define CX18_CARD_LAST		      9

#define CX18_ENC_STREAM_TYPE_MPG  0
#define CX18_ENC_STREAM_TYPE_TS   1
#define CX18_ENC_STREAM_TYPE_YUV  2
#define CX18_ENC_STREAM_TYPE_VBI  3
#define CX18_ENC_STREAM_TYPE_PCM  4
#define CX18_ENC_STREAM_TYPE_IDX  5
#define CX18_ENC_STREAM_TYPE_RAD  6
#define CX18_MAX_STREAMS	  7

/* system vendor and device IDs */
#define PCI_VENDOR_ID_CX      0x14f1
#define PCI_DEVICE_ID_CX23418 0x5b7a

/* subsystem vendor ID */
#define CX18_PCI_ID_HAUPPAUGE		0x0070
#define CX18_PCI_ID_COMPRO		0x185b
#define CX18_PCI_ID_YUAN		0x12ab
#define CX18_PCI_ID_CONEXANT		0x14f1
#define CX18_PCI_ID_TOSHIBA		0x1179
#define CX18_PCI_ID_LEADTEK		0x107D
#define CX18_PCI_ID_GOTVIEW		0x5854

/* ======================================================================== */
/* ========================== START USER SETTABLE DMA VARIABLES =========== */
/* ======================================================================== */

/* DMA Buffers, Default size in MB allocated */
#define CX18_DEFAULT_ENC_TS_BUFFERS  1
#define CX18_DEFAULT_ENC_MPG_BUFFERS 2
#define CX18_DEFAULT_ENC_IDX_BUFFERS 1
#define CX18_DEFAULT_ENC_YUV_BUFFERS 2
#define CX18_DEFAULT_ENC_VBI_BUFFERS 1
#define CX18_DEFAULT_ENC_PCM_BUFFERS 1

/* Maximum firmware DMA buffers per stream */
#define CX18_MAX_FW_MDLS_PER_STREAM 63

/* YUV buffer sizes in bytes to ensure integer # of frames per buffer */
#define CX18_UNIT_ENC_YUV_BUFSIZE	(720 *  32 * 3 / 2) /* bytes */
#define CX18_625_LINE_ENC_YUV_BUFSIZE	(CX18_UNIT_ENC_YUV_BUFSIZE * 576/32)
#define CX18_525_LINE_ENC_YUV_BUFSIZE	(CX18_UNIT_ENC_YUV_BUFSIZE * 480/32)

/* IDX buffer size should be a multiple of the index entry size from the chip */
struct cx18_enc_idx_entry {
	__le32 length;
	__le32 offset_low;
	__le32 offset_high;
	__le32 flags;
	__le32 pts_low;
	__le32 pts_high;
} __attribute__ ((packed));
#define CX18_UNIT_ENC_IDX_BUFSIZE \
	(sizeof(struct cx18_enc_idx_entry) * V4L2_ENC_IDX_ENTRIES)

/* DMA buffer, default size in kB allocated */
#define CX18_DEFAULT_ENC_TS_BUFSIZE   32
#define CX18_DEFAULT_ENC_MPG_BUFSIZE  32
#define CX18_DEFAULT_ENC_IDX_BUFSIZE  (CX18_UNIT_ENC_IDX_BUFSIZE * 1 / 1024 + 1)
#define CX18_DEFAULT_ENC_YUV_BUFSIZE  (CX18_UNIT_ENC_YUV_BUFSIZE * 3 / 1024 + 1)
#define CX18_DEFAULT_ENC_PCM_BUFSIZE   4

/* i2c stuff */
#define I2C_CLIENTS_MAX 16

/* debugging */

/* Flag to turn on high volume debugging */
#define CX18_DBGFLG_WARN  (1 << 0)
#define CX18_DBGFLG_INFO  (1 << 1)
#define CX18_DBGFLG_API   (1 << 2)
#define CX18_DBGFLG_DMA   (1 << 3)
#define CX18_DBGFLG_IOCTL (1 << 4)
#define CX18_DBGFLG_FILE  (1 << 5)
#define CX18_DBGFLG_I2C   (1 << 6)
#define CX18_DBGFLG_IRQ   (1 << 7)
/* Flag to turn on high volume debugging */
#define CX18_DBGFLG_HIGHVOL (1 << 8)

/* NOTE: extra space before comma in 'fmt , ## args' is required for
   gcc-2.95, otherwise it won't compile. */
#define CX18_DEBUG(x, type, fmt, args...) \
	do { \
		if ((x) & cx18_debug) \
			v4l2_info(&cx->v4l2_dev, " " type ": " fmt , ## args); \
	} while (0)
#define CX18_DEBUG_WARN(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_WARN, "warning", fmt , ## args)
#define CX18_DEBUG_INFO(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_INFO, "info", fmt , ## args)
#define CX18_DEBUG_API(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_API, "api", fmt , ## args)
#define CX18_DEBUG_DMA(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_DMA, "dma", fmt , ## args)
#define CX18_DEBUG_IOCTL(fmt, args...) CX18_DEBUG(CX18_DBGFLG_IOCTL, "ioctl", fmt , ## args)
#define CX18_DEBUG_FILE(fmt, args...)  CX18_DEBUG(CX18_DBGFLG_FILE, "file", fmt , ## args)
#define CX18_DEBUG_I2C(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_I2C, "i2c", fmt , ## args)
#define CX18_DEBUG_IRQ(fmt, args...)   CX18_DEBUG(CX18_DBGFLG_IRQ, "irq", fmt , ## args)

#define CX18_DEBUG_HIGH_VOL(x, type, fmt, args...) \
	do { \
		if (((x) & cx18_debug) && (cx18_debug & CX18_DBGFLG_HIGHVOL)) \
			v4l2_info(&cx->v4l2_dev, " " type ": " fmt , ## args); \
	} while (0)
#define CX18_DEBUG_HI_WARN(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_WARN, "warning", fmt , ## args)
#define CX18_DEBUG_HI_INFO(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_INFO, "info", fmt , ## args)
#define CX18_DEBUG_HI_API(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_API, "api", fmt , ## args)
#define CX18_DEBUG_HI_DMA(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_DMA, "dma", fmt , ## args)
#define CX18_DEBUG_HI_IOCTL(fmt, args...) CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_IOCTL, "ioctl", fmt , ## args)
#define CX18_DEBUG_HI_FILE(fmt, args...)  CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_FILE, "file", fmt , ## args)
#define CX18_DEBUG_HI_I2C(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_I2C, "i2c", fmt , ## args)
#define CX18_DEBUG_HI_IRQ(fmt, args...)   CX18_DEBUG_HIGH_VOL(CX18_DBGFLG_IRQ, "irq", fmt , ## args)

/* Standard kernel messages */
#define CX18_ERR(fmt, args...)      v4l2_err(&cx->v4l2_dev, fmt , ## args)
#define CX18_WARN(fmt, args...)     v4l2_warn(&cx->v4l2_dev, fmt , ## args)
#define CX18_INFO(fmt, args...)     v4l2_info(&cx->v4l2_dev, fmt , ## args)

/* Messages for internal subdevs to use */
#define CX18_DEBUG_DEV(x, dev, type, fmt, args...) \
	do { \
		if ((x) & cx18_debug) \
			v4l2_info(dev, " " type ": " fmt , ## args); \
	} while (0)
#define CX18_DEBUG_WARN_DEV(dev, fmt, args...) \
		CX18_DEBUG_DEV(CX18_DBGFLG_WARN, dev, "warning", fmt , ## args)
#define CX18_DEBUG_INFO_DEV(dev, fmt, args...) \
		CX18_DEBUG_DEV(CX18_DBGFLG_INFO, dev, "info", fmt , ## args)
#define CX18_DEBUG_API_DEV(dev, fmt, args...) \
		CX18_DEBUG_DEV(CX18_DBGFLG_API, dev, "api", fmt , ## args)
#define CX18_DEBUG_DMA_DEV(dev, fmt, args...) \
		CX18_DEBUG_DEV(CX18_DBGFLG_DMA, dev, "dma", fmt , ## args)
#define CX18_DEBUG_IOCTL_DEV(dev, fmt, args...) \
		CX18_DEBUG_DEV(CX18_DBGFLG_IOCTL, dev, "ioctl", fmt , ## args)
#define CX18_DEBUG_FILE_DEV(dev, fmt, args...) \
		CX18_DEBUG_DEV(CX18_DBGFLG_FILE, dev, "file", fmt , ## args)
#define CX18_DEBUG_I2C_DEV(dev, fmt, args...) \
		CX18_DEBUG_DEV(CX18_DBGFLG_I2C, dev, "i2c", fmt , ## args)
#define CX18_DEBUG_IRQ_DEV(dev, fmt, args...) \
		CX18_DEBUG_DEV(CX18_DBGFLG_IRQ, dev, "irq", fmt , ## args)

#define CX18_DEBUG_HIGH_VOL_DEV(x, dev, type, fmt, args...) \
	do { \
		if (((x) & cx18_debug) && (cx18_debug & CX18_DBGFLG_HIGHVOL)) \
			v4l2_info(dev, " " type ": " fmt , ## args); \
	} while (0)
#define CX18_DEBUG_HI_WARN_DEV(dev, fmt, args...) \
	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_WARN, dev, "warning", fmt , ## args)
#define CX18_DEBUG_HI_INFO_DEV(dev, fmt, args...) \
	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_INFO, dev, "info", fmt , ## args)
#define CX18_DEBUG_HI_API_DEV(dev, fmt, args...) \
	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_API, dev, "api", fmt , ## args)
#define CX18_DEBUG_HI_DMA_DEV(dev, fmt, args...) \
	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_DMA, dev, "dma", fmt , ## args)
#define CX18_DEBUG_HI_IOCTL_DEV(dev, fmt, args...) \
	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_IOCTL, dev, "ioctl", fmt , ## args)
#define CX18_DEBUG_HI_FILE_DEV(dev, fmt, args...) \
	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_FILE, dev, "file", fmt , ## args)
#define CX18_DEBUG_HI_I2C_DEV(dev, fmt, args...) \
	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_I2C, dev, "i2c", fmt , ## args)
#define CX18_DEBUG_HI_IRQ_DEV(dev, fmt, args...) \
	CX18_DEBUG_HIGH_VOL_DEV(CX18_DBGFLG_IRQ, dev, "irq", fmt , ## args)

#define CX18_ERR_DEV(dev, fmt, args...)      v4l2_err(dev, fmt , ## args)
#define CX18_WARN_DEV(dev, fmt, args...)     v4l2_warn(dev, fmt , ## args)
#define CX18_INFO_DEV(dev, fmt, args...)     v4l2_info(dev, fmt , ## args)

extern int cx18_debug;

struct cx18_options {
	int megabytes[CX18_MAX_STREAMS]; /* Size in megabytes of each stream */
	int cardtype;		/* force card type on load */
	int tuner;		/* set tuner on load */
	int radio;		/* enable/disable radio */
};

/* per-mdl bit flags */
#define CX18_F_M_NEED_SWAP  0	/* mdl buffer data must be endianness swapped */

/* per-stream, s_flags */
#define CX18_F_S_CLAIMED	3	/* this stream is claimed */
#define CX18_F_S_STREAMING      4	/* the fw is decoding/encoding this stream */
#define CX18_F_S_INTERNAL_USE	5	/* this stream is used internally (sliced VBI processing) */
#define CX18_F_S_STREAMOFF	7	/* signal end of stream EOS */
#define CX18_F_S_APPL_IO        8	/* this stream is used read/written by an application */
#define CX18_F_S_STOPPING	9	/* telling the fw to stop capturing */

/* per-cx18, i_flags */
#define CX18_F_I_LOADED_FW		0	/* Loaded firmware 1st time */
#define CX18_F_I_EOS			4	/* End of encoder stream */
#define CX18_F_I_RADIO_USER		5	/* radio tuner is selected */
#define CX18_F_I_ENC_PAUSED		13	/* the encoder is paused */
#define CX18_F_I_INITED			21	/* set after first open */
#define CX18_F_I_FAILED			22	/* set if first open failed */

/* These are the VBI types as they appear in the embedded VBI private packets. */
#define CX18_SLICED_TYPE_TELETEXT_B     (1)
#define CX18_SLICED_TYPE_CAPTION_525    (4)
#define CX18_SLICED_TYPE_WSS_625        (5)
#define CX18_SLICED_TYPE_VPS            (7)

/**
 * list_entry_is_past_end - check if a previous loop cursor is off list end
 * @pos:	the type * previously used as a loop cursor.
 * @head:	the head for your list.
 * @member:	the name of the list_head within the struct.
 *
 * Check if the entry's list_head is the head of the list, thus it's not a
 * real entry but was the loop cursor that walked past the end
 */
#define list_entry_is_past_end(pos, head, member) \
	(&pos->member == (head))

struct cx18_buffer {
	struct list_head list;
	dma_addr_t dma_handle;
	char *buf;

	u32 bytesused;
	u32 readpos;
};

struct cx18_mdl {
	struct list_head list;
	u32 id;		/* index into cx->scb->cpu_mdl[] of 1st cx18_mdl_ent */

	unsigned int skipped;
	unsigned long m_flags;

	struct list_head buf_list;
	struct cx18_buffer *curr_buf; /* current buffer in list for reading */

	u32 bytesused;
	u32 readpos;
};

struct cx18_queue {
	struct list_head list;
	atomic_t depth;
	u32 bytesused;
	spinlock_t lock;
};

struct cx18_stream; /* forward reference */

struct cx18_dvb {
	struct cx18_stream *stream;
	struct dmx_frontend hw_frontend;
	struct dmx_frontend mem_frontend;
	struct dmxdev dmxdev;
	struct dvb_adapter dvb_adapter;
	struct dvb_demux demux;
	struct dvb_frontend *fe;
	struct dvb_net dvbnet;
	int enabled;
	int feeding;
	struct mutex feedlock;
};

struct cx18;	 /* forward reference */
struct cx18_scb; /* forward reference */


#define CX18_MAX_MDL_ACKS 2
#define CX18_MAX_IN_WORK_ORDERS (CX18_MAX_FW_MDLS_PER_STREAM + 7)
/* CPU_DE_RELEASE_MDL can burst CX18_MAX_FW_MDLS_PER_STREAM orders in a group */

#define CX18_F_EWO_MB_STALE_UPON_RECEIPT 0x1
#define CX18_F_EWO_MB_STALE_WHILE_PROC   0x2
#define CX18_F_EWO_MB_STALE \
	     (CX18_F_EWO_MB_STALE_UPON_RECEIPT | CX18_F_EWO_MB_STALE_WHILE_PROC)

struct cx18_in_work_order {
	struct work_struct work;
	atomic_t pending;
	struct cx18 *cx;
	unsigned long flags;
	int rpu;
	struct cx18_mailbox mb;
	struct cx18_mdl_ack mdl_ack[CX18_MAX_MDL_ACKS];
	char *str;
};

#define CX18_INVALID_TASK_HANDLE 0xffffffff

struct cx18_stream {
	/* These first five fields are always set, even if the stream
	   is not actually created. */
	struct video_device video_dev;	/* v4l2_dev is NULL when stream not created */
	struct cx18_dvb *dvb;		/* DVB / Digital Transport */
	struct cx18 *cx;		/* for ease of use */
	const char *name;		/* name of the stream */
	int type;			/* stream type */
	u32 handle;			/* task handle */
	u32 v4l2_dev_caps;