diff options
Diffstat (limited to 'include/sound/emu10k1.h')
| -rw-r--r-- | include/sound/emu10k1.h | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/include/sound/emu10k1.h b/include/sound/emu10k1.h index 234b5baea6..38db50b280 100644 --- a/include/sound/emu10k1.h +++ b/include/sound/emu10k1.h @@ -598,17 +598,25 @@ SUB_REG(PEFE, FILTERAMOUNT, 0x000000ff) /* Filter envlope amount */ // In stereo mode, the two channels' caches are concatenated into one, // and hold the interleaved frames. // The cache holds 64 frames, so the upper half is not used in 8-bit mode. -// All registers mentioned below count in frames. -// The cache is a ring buffer; CCR_READADDRESS operates modulo 64. -// The cache is filled from (CCCA_CURRADDR - CCR_CACHEINVALIDSIZE) -// into (CCR_READADDRESS - CCR_CACHEINVALIDSIZE). +// All registers mentioned below count in frames. Shortcuts: +// CA = CCCA_CURRADDR, CRA = CCR_READADDRESS, +// CLA = CCR_CACHELOOPADDRHI:CLP_CACHELOOPADDR, +// CIS = CCR_CACHEINVALIDSIZE, LIS = CCR_LOOPINVALSIZE, +// CLF = CCR_CACHELOOPFLAG, LF = CCR_LOOPFLAG +// The cache is a ring buffer; CRA operates modulo 64. +// The cache is filled from (CA - CIS) into (CRA - CIS). // The engine has a fetch threshold of 32 bytes, so it tries to keep -// CCR_CACHEINVALIDSIZE below 8 (16-bit stereo), 16 (16-bit mono, -// 8-bit stereo), or 32 (8-bit mono). The actual transfers are pretty -// unpredictable, especially if several voices are running. -// Frames are consumed at CCR_READADDRESS, which is incremented afterwards, -// along with CCCA_CURRADDR and CCR_CACHEINVALIDSIZE. This implies that the -// actual playback position always lags CCCA_CURRADDR by exactly 64 frames. +// CIS below 8 (16-bit stereo), 16 (16-bit mono, 8-bit stereo), or +// 32 (8-bit mono). The actual transfers are pretty unpredictable, +// especially if several voices are running. +// Frames are consumed at CRA, which is incremented afterwards, +// along with CA and CIS. This implies that the actual playback +// position always lags CA by exactly 64 frames. +// When CA reaches DSL_LOOPENDADDR, LF is set for one frame's time. +// LF's rising edge causes the current values of CA and CIS to be +// copied into CLA and LIS, resp., and CLF to be set. +// If CLF is set, the first LIS of the CIS frames are instead +// filled from (CLA - LIS), and CLF is subsequently reset. #define CD0 0x20 /* Cache data registers 0 .. 0x1f */ #define PTB 0x40 /* Page table base register */ @@ -1843,6 +1851,7 @@ void snd_emu1010_fpga_link_dst_src_write(struct snd_emu10k1 *emu, u32 dst, u32 s u32 snd_emu1010_fpga_link_dst_src_read(struct snd_emu10k1 *emu, u32 dst); int snd_emu1010_get_raw_rate(struct snd_emu10k1 *emu, u8 src); void snd_emu1010_update_clock(struct snd_emu10k1 *emu); +void snd_emu1010_load_firmware_entry(struct snd_emu10k1 *emu, int dock, const struct firmware *fw_entry); unsigned int snd_emu10k1_efx_read(struct snd_emu10k1 *emu, unsigned int pc); void snd_emu10k1_intr_enable(struct snd_emu10k1 *emu, unsigned int intrenb); void snd_emu10k1_intr_disable(struct snd_emu10k1 *emu, unsigned int intrenb); @@ -1885,8 +1894,8 @@ int snd_emu10k1_alloc_pages_maybe_wider(struct snd_emu10k1 *emu, size_t size, struct snd_dma_buffer *dmab); struct snd_util_memblk *snd_emu10k1_synth_alloc(struct snd_emu10k1 *emu, unsigned int size); int snd_emu10k1_synth_free(struct snd_emu10k1 *emu, struct snd_util_memblk *blk); -int snd_emu10k1_synth_bzero(struct snd_emu10k1 *emu, struct snd_util_memblk *blk, int offset, int size); -int snd_emu10k1_synth_copy_from_user(struct snd_emu10k1 *emu, struct snd_util_memblk *blk, int offset, const char __user *data, int size); +int snd_emu10k1_synth_memset(struct snd_emu10k1 *emu, struct snd_util_memblk *blk, int offset, int size, u8 value); +int snd_emu10k1_synth_copy_from_user(struct snd_emu10k1 *emu, struct snd_util_memblk *blk, int offset, const char __user *data, int size, u32 xor); int snd_emu10k1_memblk_map(struct snd_emu10k1 *emu, struct snd_emu10k1_memblk *blk); /* voice allocation */ |