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linux/sound/oss/msnd.h
Adrian Bunk ea8e1652c5 OSS msnd: fix array overflows 
Fix array overflows in the OSS msnd driver spotted by the Coverity checker.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-14 08:52:23 -08:00

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/*********************************************************************
*
* msnd.h
*
* Turtle Beach MultiSound Sound Card Driver for Linux
*
* Some parts of this header file were derived from the Turtle Beach
* MultiSound Driver Development Kit.
*
* Copyright (C) 1998 Andrew Veliath
* Copyright (C) 1993 Turtle Beach Systems, Inc.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: msnd.h,v 1.36 1999/03/21 17:05:42 andrewtv Exp $
*
********************************************************************/
#ifndef __MSND_H
#define __MSND_H
#define VERSION "0.8.3.1"
#define DEFSAMPLERATE DSP_DEFAULT_SPEED
#define DEFSAMPLESIZE AFMT_U8
#define DEFCHANNELS 1
#define DEFFIFOSIZE 128
#define SNDCARD_MSND 38
#define SRAM_BANK_SIZE 0x8000
#define SRAM_CNTL_START 0x7F00
#define DSP_BASE_ADDR 0x4000
#define DSP_BANK_BASE 0x4000
#define HP_ICR 0x00
#define HP_CVR 0x01
#define HP_ISR 0x02
#define HP_IVR 0x03
#define HP_NU 0x04
#define HP_INFO 0x04
#define HP_TXH 0x05
#define HP_RXH 0x05
#define HP_TXM 0x06
#define HP_RXM 0x06
#define HP_TXL 0x07
#define HP_RXL 0x07
#define HP_ICR_DEF 0x00
#define HP_CVR_DEF 0x12
#define HP_ISR_DEF 0x06
#define HP_IVR_DEF 0x0f
#define HP_NU_DEF 0x00
#define HP_IRQM 0x09
#define HPR_BLRC 0x08
#define HPR_SPR1 0x09
#define HPR_SPR2 0x0A
#define HPR_TCL0 0x0B
#define HPR_TCL1 0x0C
#define HPR_TCL2 0x0D
#define HPR_TCL3 0x0E
#define HPR_TCL4 0x0F
#define HPICR_INIT 0x80
#define HPICR_HM1 0x40
#define HPICR_HM0 0x20
#define HPICR_HF1 0x10
#define HPICR_HF0 0x08
#define HPICR_TREQ 0x02
#define HPICR_RREQ 0x01
#define HPCVR_HC 0x80
#define HPISR_HREQ 0x80
#define HPISR_DMA 0x40
#define HPISR_HF3 0x10
#define HPISR_HF2 0x08
#define HPISR_TRDY 0x04
#define HPISR_TXDE 0x02
#define HPISR_RXDF 0x01
#define HPIO_290 0
#define HPIO_260 1
#define HPIO_250 2
#define HPIO_240 3
#define HPIO_230 4
#define HPIO_220 5
#define HPIO_210 6
#define HPIO_3E0 7
#define HPMEM_NONE 0
#define HPMEM_B000 1
#define HPMEM_C800 2
#define HPMEM_D000 3
#define HPMEM_D400 4
#define HPMEM_D800 5
#define HPMEM_E000 6
#define HPMEM_E800 7
#define HPIRQ_NONE 0
#define HPIRQ_5 1
#define HPIRQ_7 2
#define HPIRQ_9 3
#define HPIRQ_10 4
#define HPIRQ_11 5
#define HPIRQ_12 6
#define HPIRQ_15 7
#define HIMT_PLAY_DONE 0x00
#define HIMT_RECORD_DONE 0x01
#define HIMT_MIDI_EOS 0x02
#define HIMT_MIDI_OUT 0x03
#define HIMT_MIDI_IN_UCHAR 0x0E
#define HIMT_DSP 0x0F
#define HDEX_BASE 0x92
#define HDEX_PLAY_START (0 + HDEX_BASE)
#define HDEX_PLAY_STOP (1 + HDEX_BASE)
#define HDEX_PLAY_PAUSE (2 + HDEX_BASE)
#define HDEX_PLAY_RESUME (3 + HDEX_BASE)
#define HDEX_RECORD_START (4 + HDEX_BASE)
#define HDEX_RECORD_STOP (5 + HDEX_BASE)
#define HDEX_MIDI_IN_START (6 + HDEX_BASE)
#define HDEX_MIDI_IN_STOP (7 + HDEX_BASE)
#define HDEX_MIDI_OUT_START (8 + HDEX_BASE)
#define HDEX_MIDI_OUT_STOP (9 + HDEX_BASE)
#define HDEX_AUX_REQ (10 + HDEX_BASE)
#define HIWORD(l) ((WORD)((((DWORD)(l)) >> 16) & 0xFFFF))
#define LOWORD(l) ((WORD)(DWORD)(l))
#define HIBYTE(w) ((BYTE)(((WORD)(w) >> 8) & 0xFF))
#define LOBYTE(w) ((BYTE)(w))
#define MAKELONG(low,hi) ((long)(((WORD)(low))|(((DWORD)((WORD)(hi)))<<16)))
#define MAKEWORD(low,hi) ((WORD)(((BYTE)(low))|(((WORD)((BYTE)(hi)))<<8)))
#define PCTODSP_OFFSET(w) (USHORT)((w)/2)
#define PCTODSP_BASED(w) (USHORT)(((w)/2) + DSP_BASE_ADDR)
#define DSPTOPC_BASED(w) (((w) - DSP_BASE_ADDR) * 2)
#ifdef SLOWIO
#define msnd_outb outb_p
#define msnd_inb inb_p
#else
#define msnd_outb outb
#define msnd_inb inb
#endif
/* JobQueueStruct */
#define JQS_wStart 0x00
#define JQS_wSize 0x02
#define JQS_wHead 0x04
#define JQS_wTail 0x06
#define JQS__size 0x08
/* DAQueueDataStruct */
#define DAQDS_wStart 0x00
#define DAQDS_wSize 0x02
#define DAQDS_wFormat 0x04
#define DAQDS_wSampleSize 0x06
#define DAQDS_wChannels 0x08
#define DAQDS_wSampleRate 0x0A
#define DAQDS_wIntMsg 0x0C
#define DAQDS_wFlags 0x0E
#define DAQDS__size 0x10
typedef u8 BYTE;
typedef u16 USHORT;
typedef u16 WORD;
typedef u32 DWORD;
typedef void __iomem * LPDAQD;
/* Generic FIFO */
typedef struct {
size_t n, len;
char *data;
int head, tail;
} msnd_fifo;
typedef struct multisound_dev {
/* Linux device info */
char *name;
int dsp_minor, mixer_minor;
int ext_midi_dev, hdr_midi_dev;
/* Hardware resources */
int io, numio;
int memid, irqid;
int irq, irq_ref;
unsigned char info;
void __iomem *base;
/* Motorola 56k DSP SMA */
void __iomem *SMA;
void __iomem *DAPQ, *DARQ, *MODQ, *MIDQ, *DSPQ;
void __iomem *pwDSPQData, *pwMIDQData, *pwMODQData;
int dspq_data_buff, dspq_buff_size;
/* State variables */
enum { msndClassic, msndPinnacle } type;
mode_t mode;
unsigned long flags;
#define F_RESETTING 0
#define F_HAVEDIGITAL 1
#define F_AUDIO_WRITE_INUSE 2
#define F_WRITING 3
#define F_WRITEBLOCK 4
#define F_WRITEFLUSH 5
#define F_AUDIO_READ_INUSE 6
#define F_READING 7
#define F_READBLOCK 8
#define F_EXT_MIDI_INUSE 9
#define F_HDR_MIDI_INUSE 10
#define F_DISABLE_WRITE_NDELAY 11
wait_queue_head_t writeblock;
wait_queue_head_t readblock;
wait_queue_head_t writeflush;
spinlock_t lock;
int nresets;
unsigned long recsrc;
int left_levels[32];
int right_levels[32];
int mixer_mod_count;
int calibrate_signal;
int play_sample_size, play_sample_rate, play_channels;
int play_ndelay;
int rec_sample_size, rec_sample_rate, rec_channels;
int rec_ndelay;
BYTE bCurrentMidiPatch;
/* Digital audio FIFOs */
msnd_fifo DAPF, DARF;
int fifosize;
int last_playbank, last_recbank;
/* MIDI in callback */
void (*midi_in_interrupt)(struct multisound_dev *);
} multisound_dev_t;
#ifndef mdelay
# define mdelay(a) udelay((a) * 1000)
#endif
int msnd_register(multisound_dev_t *dev);
void msnd_unregister(multisound_dev_t *dev);
void msnd_init_queue(void __iomem *, int start, int size);
void msnd_fifo_init(msnd_fifo *f);
void msnd_fifo_free(msnd_fifo *f);
int msnd_fifo_alloc(msnd_fifo *f, size_t n);
void msnd_fifo_make_empty(msnd_fifo *f);
int msnd_fifo_write_io(msnd_fifo *f, char __iomem *buf, size_t len);
int msnd_fifo_read_io(msnd_fifo *f, char __iomem *buf, size_t len);
int msnd_fifo_write(msnd_fifo *f, const char *buf, size_t len);
int msnd_fifo_read(msnd_fifo *f, char *buf, size_t len);
int msnd_send_dsp_cmd(multisound_dev_t *dev, BYTE cmd);
int msnd_send_word(multisound_dev_t *dev, unsigned char high,
unsigned char mid, unsigned char low);
int msnd_upload_host(multisound_dev_t *dev, char *bin, int len);
int msnd_enable_irq(multisound_dev_t *dev);
int msnd_disable_irq(multisound_dev_t *dev);
#endif /* __MSND_H */
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