Use a bit-mask of EOF irqs to determine when all required idmac channel EOFs have been received for a tile conversion, and only do tile completion processing after all EOFs have been received. Otherwise it was found that a conversion would stall after the completion of a tile and the start of the next tile, because the input/read idmac channel had not completed and entered idle state, thus locking up the channel when attempting to re-start it for the next tile.
Fixes: 0537db801bb01 ("gpu: ipu-v3: image-convert: reconfigure IC per tile") Signed-off-by: Steve Longerbeam slongerbeam@gmail.com --- Changes in v2: - need to clear eof_mask at completion of every tile, not just in convert_start(). --- drivers/gpu/ipu-v3/ipu-image-convert.c | 109 +++++++++++++++++++------ 1 file changed, 82 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/ipu-v3/ipu-image-convert.c b/drivers/gpu/ipu-v3/ipu-image-convert.c index f8b031ded3cf..aa1d4b6d278f 100644 --- a/drivers/gpu/ipu-v3/ipu-image-convert.c +++ b/drivers/gpu/ipu-v3/ipu-image-convert.c @@ -137,6 +137,17 @@ struct ipu_image_convert_ctx; struct ipu_image_convert_chan; struct ipu_image_convert_priv;
+enum eof_irq_mask { + EOF_IRQ_IN = BIT(0), + EOF_IRQ_ROT_IN = BIT(1), + EOF_IRQ_OUT = BIT(2), + EOF_IRQ_ROT_OUT = BIT(3), +}; + +#define EOF_IRQ_COMPLETE (EOF_IRQ_IN | EOF_IRQ_OUT) +#define EOF_IRQ_ROT_COMPLETE (EOF_IRQ_IN | EOF_IRQ_OUT | \ + EOF_IRQ_ROT_IN | EOF_IRQ_ROT_OUT) + struct ipu_image_convert_ctx { struct ipu_image_convert_chan *chan;
@@ -173,6 +184,9 @@ struct ipu_image_convert_ctx { /* where to place converted tile in dest image */ unsigned int out_tile_map[MAX_TILES];
+ /* mask of completed EOF irqs at every tile conversion */ + enum eof_irq_mask eof_mask; + struct list_head list; };
@@ -189,6 +203,8 @@ struct ipu_image_convert_chan { struct ipuv3_channel *rotation_out_chan;
/* the IPU end-of-frame irqs */ + int in_eof_irq; + int rot_in_eof_irq; int out_eof_irq; int rot_out_eof_irq;
@@ -1380,6 +1396,9 @@ static int convert_start(struct ipu_image_convert_run *run, unsigned int tile) dev_dbg(priv->ipu->dev, "%s: task %u: starting ctx %p run %p tile %u -> %u\n", __func__, chan->ic_task, ctx, run, tile, dst_tile);
+ /* clear EOF irq mask */ + ctx->eof_mask = 0; + if (ipu_rot_mode_is_irt(ctx->rot_mode)) { /* swap width/height for resizer */ dest_width = d_image->tile[dst_tile].height; @@ -1615,7 +1634,7 @@ static bool ic_settings_changed(struct ipu_image_convert_ctx *ctx) }
/* hold irqlock when calling */ -static irqreturn_t do_irq(struct ipu_image_convert_run *run) +static irqreturn_t do_tile_complete(struct ipu_image_convert_run *run) { struct ipu_image_convert_ctx *ctx = run->ctx; struct ipu_image_convert_chan *chan = ctx->chan; @@ -1700,6 +1719,7 @@ static irqreturn_t do_irq(struct ipu_image_convert_run *run) ctx->cur_buf_num ^= 1; }
+ ctx->eof_mask = 0; /* clear EOF irq mask for next tile */ ctx->next_tile++; return IRQ_HANDLED; done: @@ -1715,8 +1735,9 @@ static irqreturn_t eof_irq(int irq, void *data) struct ipu_image_convert_priv *priv = chan->priv; struct ipu_image_convert_ctx *ctx; struct ipu_image_convert_run *run; + irqreturn_t ret = IRQ_HANDLED; + bool tile_complete = false; unsigned long flags; - irqreturn_t ret;
spin_lock_irqsave(&chan->irqlock, flags);
@@ -1729,27 +1750,33 @@ static irqreturn_t eof_irq(int irq, void *data)
ctx = run->ctx;
- if (irq == chan->out_eof_irq) { - if (ipu_rot_mode_is_irt(ctx->rot_mode)) { - /* this is a rotation op, just ignore */ - ret = IRQ_HANDLED; - goto out; - } - } else if (irq == chan->rot_out_eof_irq) { + if (irq == chan->in_eof_irq) { + ctx->eof_mask |= EOF_IRQ_IN; + } else if (irq == chan->out_eof_irq) { + ctx->eof_mask |= EOF_IRQ_OUT; + } else if (irq == chan->rot_in_eof_irq || + irq == chan->rot_out_eof_irq) { if (!ipu_rot_mode_is_irt(ctx->rot_mode)) { /* this was NOT a rotation op, shouldn't happen */ dev_err(priv->ipu->dev, "Unexpected rotation interrupt\n"); - ret = IRQ_HANDLED; goto out; } + ctx->eof_mask |= (irq == chan->rot_in_eof_irq) ? + EOF_IRQ_ROT_IN : EOF_IRQ_ROT_OUT; } else { dev_err(priv->ipu->dev, "Received unknown irq %d\n", irq); ret = IRQ_NONE; goto out; }
- ret = do_irq(run); + if (ipu_rot_mode_is_irt(ctx->rot_mode)) + tile_complete = (ctx->eof_mask == EOF_IRQ_ROT_COMPLETE); + else + tile_complete = (ctx->eof_mask == EOF_IRQ_COMPLETE); + + if (tile_complete) + ret = do_tile_complete(run); out: spin_unlock_irqrestore(&chan->irqlock, flags); return ret; @@ -1783,6 +1810,10 @@ static void force_abort(struct ipu_image_convert_ctx *ctx)
static void release_ipu_resources(struct ipu_image_convert_chan *chan) { + if (chan->in_eof_irq >= 0) + free_irq(chan->in_eof_irq, chan); + if (chan->rot_in_eof_irq >= 0) + free_irq(chan->rot_in_eof_irq, chan); if (chan->out_eof_irq >= 0) free_irq(chan->out_eof_irq, chan); if (chan->rot_out_eof_irq >= 0) @@ -1801,7 +1832,27 @@ static void release_ipu_resources(struct ipu_image_convert_chan *chan)
chan->in_chan = chan->out_chan = chan->rotation_in_chan = chan->rotation_out_chan = NULL; - chan->out_eof_irq = chan->rot_out_eof_irq = -1; + chan->in_eof_irq = -1; + chan->rot_in_eof_irq = -1; + chan->out_eof_irq = -1; + chan->rot_out_eof_irq = -1; +} + +static int get_eof_irq(struct ipu_image_convert_chan *chan, + struct ipuv3_channel *channel) +{ + struct ipu_image_convert_priv *priv = chan->priv; + int ret, irq; + + irq = ipu_idmac_channel_irq(priv->ipu, channel, IPU_IRQ_EOF); + + ret = request_threaded_irq(irq, eof_irq, do_bh, 0, "ipu-ic", chan); + if (ret < 0) { + dev_err(priv->ipu->dev, "could not acquire irq %d\n", irq); + return ret; + } + + return irq; }
static int get_ipu_resources(struct ipu_image_convert_chan *chan) @@ -1837,31 +1888,33 @@ static int get_ipu_resources(struct ipu_image_convert_chan *chan) }
/* acquire the EOF interrupts */ - chan->out_eof_irq = ipu_idmac_channel_irq(priv->ipu, - chan->out_chan, - IPU_IRQ_EOF); + ret = get_eof_irq(chan, chan->in_chan); + if (ret < 0) { + chan->in_eof_irq = -1; + goto err; + } + chan->in_eof_irq = ret;
- ret = request_threaded_irq(chan->out_eof_irq, eof_irq, do_bh, - 0, "ipu-ic", chan); + ret = get_eof_irq(chan, chan->rotation_in_chan); if (ret < 0) { - dev_err(priv->ipu->dev, "could not acquire irq %d\n", - chan->out_eof_irq); - chan->out_eof_irq = -1; + chan->rot_in_eof_irq = -1; goto err; } + chan->rot_in_eof_irq = ret;
- chan->rot_out_eof_irq = ipu_idmac_channel_irq(priv->ipu, - chan->rotation_out_chan, - IPU_IRQ_EOF); + ret = get_eof_irq(chan, chan->out_chan); + if (ret < 0) { + chan->out_eof_irq = -1; + goto err; + } + chan->out_eof_irq = ret;
- ret = request_threaded_irq(chan->rot_out_eof_irq, eof_irq, do_bh, - 0, "ipu-ic", chan); + ret = get_eof_irq(chan, chan->rotation_out_chan); if (ret < 0) { - dev_err(priv->ipu->dev, "could not acquire irq %d\n", - chan->rot_out_eof_irq); chan->rot_out_eof_irq = -1; goto err; } + chan->rot_out_eof_irq = ret;
return 0; err: @@ -2440,6 +2493,8 @@ int ipu_image_convert_init(struct ipu_soc *ipu, struct device *dev) chan->ic_task = i; chan->priv = priv; chan->dma_ch = &image_convert_dma_chan[i]; + chan->in_eof_irq = -1; + chan->rot_in_eof_irq = -1; chan->out_eof_irq = -1; chan->rot_out_eof_irq = -1;