X-Git-Url: http://git.samba.org/samba.git/?a=blobdiff_plain;f=sound%2Fppc%2Fpmac.c;h=613a565e04de896ba11253d776e94b0dabc80c7d;hb=47001d603375f857a7fab0e9c095d964a1ea0039;hp=5a2bef44a2f5c7ef52d2e5312b89e21c02670425;hpb=38cb162b7585d837083b8365da1eb32687c5164c;p=sfrench%2Fcifs-2.6.git diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c index 5a2bef44a2f5..613a565e04de 100644 --- a/sound/ppc/pmac.c +++ b/sound/ppc/pmac.c @@ -20,7 +20,6 @@ */ -#include #include #include #include @@ -45,6 +44,18 @@ static int tumbler_freqs[1] = { 44100 }; + +/* + * we will allocate a single 'emergency' dbdma cmd block to use if the + * tx status comes up "DEAD". This happens on some PowerComputing Pmac + * clones, either owing to a bug in dbdma or some interaction between + * IDE and sound. However, this measure would deal with DEAD status if + * it appeared elsewhere. + */ +static struct pmac_dbdma emergency_dbdma; +static int emergency_in_use; + + /* * allocate DBDMA command arrays */ @@ -375,6 +386,75 @@ static snd_pcm_uframes_t snd_pmac_capture_pointer(struct snd_pcm_substream *subs } +/* + * Handle DEAD DMA transfers: + * if the TX status comes up "DEAD" - reported on some Power Computing machines + * we need to re-start the dbdma - but from a different physical start address + * and with a different transfer length. It would get very messy to do this + * with the normal dbdma_cmd blocks - we would have to re-write the buffer start + * addresses each time. So, we will keep a single dbdma_cmd block which can be + * fiddled with. + * When DEAD status is first reported the content of the faulted dbdma block is + * copied into the emergency buffer and we note that the buffer is in use. + * we then bump the start physical address by the amount that was successfully + * output before it died. + * On any subsequent DEAD result we just do the bump-ups (we know that we are + * already using the emergency dbdma_cmd). + * CHECK: this just tries to "do it". It is possible that we should abandon + * xfers when the number of residual bytes gets below a certain value - I can + * see that this might cause a loop-forever if a too small transfer causes + * DEAD status. However this is a TODO for now - we'll see what gets reported. + * When we get a successful transfer result with the emergency buffer we just + * pretend that it completed using the original dmdma_cmd and carry on. The + * 'next_cmd' field will already point back to the original loop of blocks. + */ +static inline void snd_pmac_pcm_dead_xfer(struct pmac_stream *rec, + volatile struct dbdma_cmd __iomem *cp) +{ + unsigned short req, res ; + unsigned int phy ; + + /* printk(KERN_WARNING "snd-powermac: DMA died - patching it up!\n"); */ + + /* to clear DEAD status we must first clear RUN + set it to quiescent to be on the safe side */ + (void)in_le32(&rec->dma->status); + out_le32(&rec->dma->control, (RUN|PAUSE|FLUSH|WAKE) << 16); + + if (!emergency_in_use) { /* new problem */ + memcpy((void *)emergency_dbdma.cmds, (void *)cp, + sizeof(struct dbdma_cmd)); + emergency_in_use = 1; + st_le16(&cp->xfer_status, 0); + st_le16(&cp->req_count, rec->period_size); + cp = emergency_dbdma.cmds; + } + + /* now bump the values to reflect the amount + we haven't yet shifted */ + req = ld_le16(&cp->req_count); + res = ld_le16(&cp->res_count); + phy = ld_le32(&cp->phy_addr); + phy += (req - res); + st_le16(&cp->req_count, res); + st_le16(&cp->res_count, 0); + st_le16(&cp->xfer_status, 0); + st_le32(&cp->phy_addr, phy); + + st_le32(&cp->cmd_dep, rec->cmd.addr + + sizeof(struct dbdma_cmd)*((rec->cur_period+1)%rec->nperiods)); + + st_le16(&cp->command, OUTPUT_MORE | BR_ALWAYS | INTR_ALWAYS); + + /* point at our patched up command block */ + out_le32(&rec->dma->cmdptr, emergency_dbdma.addr); + + /* we must re-start the controller */ + (void)in_le32(&rec->dma->status); + /* should complete clearing the DEAD status */ + out_le32(&rec->dma->control, ((RUN|WAKE) << 16) + (RUN|WAKE)); +} + /* * update playback/capture pointer from interrupts */ @@ -386,11 +466,26 @@ static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec) spin_lock(&chip->reg_lock); if (rec->running) { - cp = &rec->cmd.cmds[rec->cur_period]; for (c = 0; c < rec->nperiods; c++) { /* at most all fragments */ + + if (emergency_in_use) /* already using DEAD xfer? */ + cp = emergency_dbdma.cmds; + else + cp = &rec->cmd.cmds[rec->cur_period]; + stat = ld_le16(&cp->xfer_status); + + if (stat & DEAD) { + snd_pmac_pcm_dead_xfer(rec, cp); + break; /* this block is still going */ + } + + if (emergency_in_use) + emergency_in_use = 0 ; /* done that */ + if (! (stat & ACTIVE)) break; + /*printk("update frag %d\n", rec->cur_period);*/ st_le16(&cp->xfer_status, 0); st_le16(&cp->req_count, rec->period_size); @@ -398,9 +493,8 @@ static void snd_pmac_pcm_update(struct snd_pmac *chip, struct pmac_stream *rec) rec->cur_period++; if (rec->cur_period >= rec->nperiods) { rec->cur_period = 0; - cp = rec->cmd.cmds; - } else - cp++; + } + spin_unlock(&chip->reg_lock); snd_pcm_period_elapsed(rec->substream); spin_lock(&chip->reg_lock); @@ -490,35 +584,14 @@ static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec, struct snd_pcm_substream *subs) { struct snd_pcm_runtime *runtime = subs->runtime; - int i, j, fflags; - static int typical_freqs[] = { - 44100, - 22050, - 11025, - 0, - }; - static int typical_freq_flags[] = { - SNDRV_PCM_RATE_44100, - SNDRV_PCM_RATE_22050, - SNDRV_PCM_RATE_11025, - 0, - }; + int i; /* look up frequency table and fill bit mask */ runtime->hw.rates = 0; - fflags = chip->freqs_ok; - for (i = 0; typical_freqs[i]; i++) { - for (j = 0; j < chip->num_freqs; j++) { - if ((chip->freqs_ok & (1 << j)) && - chip->freq_table[j] == typical_freqs[i]) { - runtime->hw.rates |= typical_freq_flags[i]; - fflags &= ~(1 << j); - break; - } - } - } - if (fflags) /* rest */ - runtime->hw.rates |= SNDRV_PCM_RATE_KNOT; + for (i = 0; i < chip->num_freqs; i++) + if (chip->freqs_ok & (1 << i)) + runtime->hw.rates |= + snd_pcm_rate_to_rate_bit(chip->freq_table[i]); /* check for minimum and maximum rates */ for (i = 0; i < chip->num_freqs; i++) { @@ -551,9 +624,6 @@ static int snd_pmac_pcm_open(struct snd_pmac *chip, struct pmac_stream *rec, runtime->hw.periods_max = rec->cmd.size - 1; - if (chip->can_duplex) - snd_pcm_set_sync(subs); - /* constraints to fix choppy sound */ snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); return 0; @@ -775,7 +845,8 @@ static int snd_pmac_free(struct snd_pmac *chip) out_le32(&chip->awacs->control, in_le32(&chip->awacs->control) & 0xfff); } - snd_pmac_sound_feature(chip, 0); + if (chip->node) + snd_pmac_sound_feature(chip, 0); /* clean up mixer if any */ if (chip->mixer_free) @@ -793,6 +864,7 @@ static int snd_pmac_free(struct snd_pmac *chip) snd_pmac_dbdma_free(chip, &chip->playback.cmd); snd_pmac_dbdma_free(chip, &chip->capture.cmd); snd_pmac_dbdma_free(chip, &chip->extra_dma); + snd_pmac_dbdma_free(chip, &emergency_dbdma); if (chip->macio_base) iounmap(chip->macio_base); if (chip->latch_base) @@ -925,6 +997,7 @@ static int __init snd_pmac_detect(struct snd_pmac *chip) } if (! sound) { of_node_put(chip->node); + chip->node = NULL; return -ENODEV; } prop = of_get_property(sound, "sub-frame", NULL); @@ -937,7 +1010,9 @@ static int __init snd_pmac_detect(struct snd_pmac *chip) printk(KERN_INFO "snd-powermac no longer handles any " "machines with a layout-id property " "in the device-tree, use snd-aoa.\n"); + of_node_put(sound); of_node_put(chip->node); + chip->node = NULL; return -ENODEV; } /* This should be verified on older screamers */ @@ -1031,29 +1106,6 @@ static int __init snd_pmac_detect(struct snd_pmac *chip) return 0; } -/* - * exported - boolean info callbacks for ease of programming - */ -int snd_pmac_boolean_stereo_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; - uinfo->count = 2; - uinfo->value.integer.min = 0; - uinfo->value.integer.max = 1; - return 0; -} - -int snd_pmac_boolean_mono_info(struct snd_kcontrol *kcontrol, - struct snd_ctl_elem_info *uinfo) -{ - uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; - uinfo->count = 1; - uinfo->value.integer.min = 0; - uinfo->value.integer.max = 1; - return 0; -} - #ifdef PMAC_SUPPORT_AUTOMUTE /* * auto-mute @@ -1071,7 +1123,7 @@ static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol, { struct snd_pmac *chip = snd_kcontrol_chip(kcontrol); if (ucontrol->value.integer.value[0] != chip->auto_mute) { - chip->auto_mute = ucontrol->value.integer.value[0]; + chip->auto_mute = !!ucontrol->value.integer.value[0]; if (chip->update_automute) chip->update_automute(chip, 1); return 1; @@ -1151,7 +1203,8 @@ int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return) if (snd_pmac_dbdma_alloc(chip, &chip->playback.cmd, PMAC_MAX_FRAGS + 1) < 0 || snd_pmac_dbdma_alloc(chip, &chip->capture.cmd, PMAC_MAX_FRAGS + 1) < 0 || - snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0) { + snd_pmac_dbdma_alloc(chip, &chip->extra_dma, 2) < 0 || + snd_pmac_dbdma_alloc(chip, &emergency_dbdma, 2) < 0) { err = -ENOMEM; goto __error; } @@ -1297,8 +1350,6 @@ int __init snd_pmac_new(struct snd_card *card, struct snd_pmac **chip_return) return 0; __error: - if (chip->pdev) - pci_dev_put(chip->pdev); snd_pmac_free(chip); return err; }