diff options
Diffstat (limited to 'sound/sparc/dbri.c')
| -rw-r--r-- | sound/sparc/dbri.c | 40 |
1 files changed, 17 insertions, 23 deletions
diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c index 405c603717b6..0b8545ad3e9a 100644 --- a/sound/sparc/dbri.c +++ b/sound/sparc/dbri.c @@ -250,6 +250,7 @@ static struct { #define DBRI_NO_STREAMS 2 /* One transmit/receive descriptor */ +/* When ba != 0 descriptor is used */ struct dbri_mem { volatile __u32 word1; __u32 ba; /* Transmit/Receive Buffer Address */ @@ -282,12 +283,6 @@ struct dbri_pipe { volatile __u32 *recv_fixed_ptr; /* Ptr to receive fixed data */ }; -struct dbri_desc { - int inuse; /* Boolean flag */ - int next; /* Index of next desc, or -1 */ - unsigned int len; -}; - /* Per stream (playback or record) information */ struct dbri_streaminfo { struct snd_pcm_substream *substream; @@ -317,7 +312,7 @@ struct snd_dbri { int wait_ackd; /* sequence of command buffers acknowledged */ struct dbri_pipe pipes[DBRI_NO_PIPES]; /* DBRI's 32 data pipes */ - struct dbri_desc descs[DBRI_NO_DESCS]; + int next_desc[DBRI_NO_DESCS]; /* Index of next desc, or -1 */ int chi_in_pipe; int chi_out_pipe; @@ -803,8 +798,8 @@ static void reset_pipe(struct snd_dbri * dbri, int pipe) desc = dbri->pipes[pipe].first_desc; while (desc != -1) { - dbri->descs[desc].inuse = 0; - desc = dbri->descs[desc].next; + dbri->dma->desc[desc].nda = dbri->dma->desc[desc].ba = 0; + desc = dbri->next_desc[desc]; } dbri->pipes[pipe].desc = -1; @@ -1093,7 +1088,7 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period int mylen; for (; desc < DBRI_NO_DESCS; desc++) { - if (!dbri->descs[desc].inuse) + if (!dbri->dma->desc[desc].ba) break; } if (desc == DBRI_NO_DESCS) { @@ -1110,19 +1105,16 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period mylen = period; } - dbri->descs[desc].inuse = 1; - dbri->descs[desc].next = -1; + dbri->next_desc[desc] = -1; dbri->dma->desc[desc].ba = dvma_buffer; dbri->dma->desc[desc].nda = 0; if (streamno == DBRI_PLAY) { - dbri->descs[desc].len = mylen; dbri->dma->desc[desc].word1 = DBRI_TD_CNT(mylen); dbri->dma->desc[desc].word4 = 0; if (first_desc != -1) dbri->dma->desc[desc].word1 |= DBRI_TD_M; } else { - dbri->descs[desc].len = 0; dbri->dma->desc[desc].word1 = 0; dbri->dma->desc[desc].word4 = DBRI_RD_B | DBRI_RD_BCNT(mylen); @@ -1131,7 +1123,7 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period if (first_desc == -1) { first_desc = desc; } else { - dbri->descs[last_desc].next = desc; + dbri->next_desc[last_desc] = desc; dbri->dma->desc[last_desc].nda = dbri->dma_dvma + dbri_dma_off(desc, desc); } @@ -1154,7 +1146,7 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period dbri->pipes[info->pipe].first_desc = first_desc; dbri->pipes[info->pipe].desc = first_desc; - for (desc = first_desc; desc != -1; desc = dbri->descs[desc].next) { + for (desc = first_desc; desc != -1; desc = dbri->next_desc[desc]) { dprintk(D_DESC, "DESC %d: %08x %08x %08x %08x\n", desc, dbri->dma->desc[desc].word1, @@ -1747,6 +1739,7 @@ static void transmission_complete_intr(struct snd_dbri * dbri, int pipe) struct dbri_streaminfo *info; int td; int status; + int len; info = &dbri->stream_info[DBRI_PLAY]; @@ -1765,11 +1758,12 @@ static void transmission_complete_intr(struct snd_dbri * dbri, int pipe) dprintk(D_INT, "TD %d, status 0x%02x\n", td, status); dbri->dma->desc[td].word4 = 0; /* Reset it for next time. */ - info->offset += dbri->descs[td].len; - info->left -= dbri->descs[td].len; + len = DBRI_RD_CNT(dbri->dma->desc[td].word1); + info->offset += len; + info->left -= len; /* On the last TD, transmit them all again. */ - if (dbri->descs[td].next == -1) { + if (dbri->next_desc[td] == -1) { if (info->left > 0) { printk(KERN_WARNING "%d bytes left after last transfer.\n", @@ -1779,7 +1773,7 @@ static void transmission_complete_intr(struct snd_dbri * dbri, int pipe) tasklet_schedule(&xmit_descs_task); } - td = dbri->descs[td].next; + td = dbri->next_desc[td]; dbri->pipes[pipe].desc = td; } @@ -1803,8 +1797,8 @@ static void reception_complete_intr(struct snd_dbri * dbri, int pipe) return; } - dbri->descs[rd].inuse = 0; - dbri->pipes[pipe].desc = dbri->descs[rd].next; + dbri->dma->desc[rd].ba = 0; + dbri->pipes[pipe].desc = dbri->next_desc[rd]; status = dbri->dma->desc[rd].word1; dbri->dma->desc[rd].word1 = 0; /* Reset it for next time. */ @@ -1818,7 +1812,7 @@ static void reception_complete_intr(struct snd_dbri * dbri, int pipe) rd, DBRI_RD_STATUS(status), DBRI_RD_CNT(status)); /* On the last TD, transmit them all again. */ - if (dbri->descs[rd].next == -1) { + if (dbri->next_desc[rd] == -1) { if (info->left > info->size) { printk(KERN_WARNING "%d bytes recorded in %d size buffer.\n", |