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Commit 083c2142 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nvc0/fifo: ack pb intr individually after handling each unit 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent a07d0e76

drivers/gpu/drm/nouveau/core/engine/fifo/nvc0.c

+40 −42
Original line number Diff line number Diff line
@@ -345,6 +345,32 @@ nvc0_fifo_cclass = { 
 * PFIFO engine

 ******************************************************************************/



static int

nvc0_fifo_swmthd(struct nvc0_fifo_priv *priv, u32 chid, u32 mthd, u32 data)

{

	struct nvc0_fifo_chan *chan = NULL;

	struct nouveau_handle *bind;

	unsigned long flags;

	int ret = -EINVAL;



	spin_lock_irqsave(&priv->base.lock, flags);

	if (likely(chid >= priv->base.min && chid <= priv->base.max))

		chan = (void *)priv->base.channel[chid];

	if (unlikely(!chan))

		goto out;



	bind = nouveau_namedb_get_class(nv_namedb(chan), 0x906e);

	if (likely(bind)) {

		if (!mthd || !nv_call(bind->object, mthd, data))

			ret = 0;

		nouveau_namedb_put(bind);

	}



out:

	spin_unlock_irqrestore(&priv->base.lock, flags);

	return ret;

}



static const struct nouveau_enum nvc0_fifo_fault_unit[] = {

	{ 0x00, "PGRAPH", NULL, NVDEV_ENGINE_GR },

	{ 0x03, "PEEPHOLE" },
@@ -400,13 +426,6 @@ static const struct nouveau_enum nvc0_fifo_fault_gpcclient[] = { 
	{}

};



static const struct nouveau_bitfield nvc0_fifo_pbdma_intr[] = {

/*	{ 0x00008000, "" }	seen with null ib push */

	{ 0x00200000, "ILLEGAL_MTHD" },

	{ 0x00800000, "EMPTY_SUBC" },

	{}

};



static void

nvc0_fifo_isr_vm_fault(struct nvc0_fifo_priv *priv, int unit)

{
@@ -458,34 +477,16 @@ nvc0_fifo_isr_vm_fault(struct nvc0_fifo_priv *priv, int unit) 
	nouveau_engctx_put(engctx);

}



static int

nvc0_fifo_swmthd(struct nvc0_fifo_priv *priv, u32 chid, u32 mthd, u32 data)

{

	struct nvc0_fifo_chan *chan = NULL;

	struct nouveau_handle *bind;

	unsigned long flags;

	int ret = -EINVAL;



	spin_lock_irqsave(&priv->base.lock, flags);

	if (likely(chid >= priv->base.min && chid <= priv->base.max))

		chan = (void *)priv->base.channel[chid];

	if (unlikely(!chan))

		goto out;



	bind = nouveau_namedb_get_class(nv_namedb(chan), 0x906e);

	if (likely(bind)) {

		if (!mthd || !nv_call(bind->object, mthd, data))

			ret = 0;

		nouveau_namedb_put(bind);

	}



out:

	spin_unlock_irqrestore(&priv->base.lock, flags);

	return ret;

}

static const struct nouveau_bitfield

nvc0_fifo_pbdma_intr[] = {

/*	{ 0x00008000, "" }	seen with null ib push */

	{ 0x00200000, "ILLEGAL_MTHD" },

	{ 0x00800000, "EMPTY_SUBC" },

	{}

};



static void

nvc0_fifo_isr_pbdma_intr(struct nvc0_fifo_priv *priv, int unit)

nvc0_fifo_intr_pbdma(struct nvc0_fifo_priv *priv, int unit)

{

	u32 stat = nv_rd32(priv, 0x040108 + (unit * 0x2000));

	u32 addr = nv_rd32(priv, 0x0400c0 + (unit * 0x2000));
@@ -615,16 +616,13 @@ nvc0_fifo_intr(struct nouveau_subdev *subdev) 
	}



	if (stat & 0x20000000) {

		u32 units = nv_rd32(priv, 0x0025a0);

		u32 u = units;



		while (u) {

			int i = __ffs(u);

			nvc0_fifo_isr_pbdma_intr(priv, i);

			u &= ~(1 << i);

		u32 mask = nv_rd32(priv, 0x0025a0);

		while (mask) {

			u32 unit = __ffs(mask);

			nvc0_fifo_intr_pbdma(priv, unit);

			nv_wr32(priv, 0x0025a0, (1 << unit));

			mask &= ~(1 << unit);

		}



		nv_wr32(priv, 0x0025a0, units);

		stat &= ~0x20000000;

	}