// SPDX-License-Identifier: GPL-2.0-or-later /* * Patch routines for the emu8000 (AWE32/64) * * Copyright (C) 1999 Steve Ratcliffe * Copyright (C) 1999-2000 Takashi Iwai <[email protected]> */ #include "emu8000_local.h" #include <linux/sched/signal.h> #include <linux/uaccess.h> #include <linux/moduleparam.h> static int emu8000_reset_addr; module_param(emu8000_reset_addr, int, 0444); MODULE_PARM_DESC(…) …; /* * Open up channels. */ static int snd_emu8000_open_dma(struct snd_emu8000 *emu, int write) { … } /* * Close all dram channels. */ static void snd_emu8000_close_dma(struct snd_emu8000 *emu) { … } /* */ #define BLANK_LOOP_START … #define BLANK_LOOP_END … #define BLANK_LOOP_SIZE … #define BLANK_HEAD_SIZE … /* * Read a word from userland, taking care of conversions from * 8bit samples etc. */ static unsigned short read_word(const void __user *buf, int offset, int mode) { … } /* */ static void snd_emu8000_write_wait(struct snd_emu8000 *emu) { … } /* * write sample word data * * You should not have to keep resetting the address each time * as the chip is supposed to step on the next address automatically. * It mostly does, but during writes of some samples at random it * completely loses words (every one in 16 roughly but with no * obvious pattern). * * This is therefore much slower than need be, but is at least * working. */ static inline void write_word(struct snd_emu8000 *emu, int *offset, unsigned short data) { … } /* * Write the sample to EMU800 memory. This routine is invoked out of * the generic soundfont routines as a callback. */ int snd_emu8000_sample_new(struct snd_emux *rec, struct snd_sf_sample *sp, struct snd_util_memhdr *hdr, const void __user *data, long count) { … } /* * free a sample block */ int snd_emu8000_sample_free(struct snd_emux *rec, struct snd_sf_sample *sp, struct snd_util_memhdr *hdr) { … } /* * sample_reset callback - terminate voices */ void snd_emu8000_sample_reset(struct snd_emux *rec) { … }
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