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soc: ti: k3-ringacc: Move state tracking variables under a struct

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Move the free, occ, windex and rindex under a struct. We can use memset to
zero them and it will allow a cleaner way to extend driver functionality in
the future,

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
This commit is contained in:
Peter Ujfalusi 2020-07-24 14:17:55 -07:00 committed by Santosh Shilimkar
parent 19e3b58d04
commit 6b3da0b475
1 changed files with 51 additions and 48 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

99
drivers/soc/ti/k3-ringacc.c
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@ -108,6 +108,21 @@ struct k3_ring_ops {
int (*pop_head)(struct k3_ring *ring, void *elm);
};
/**
* struct k3_ring_state - Internal state tracking structure
*
* @free: Number of free entries
* @occ: Occupancy
* @windex: Write index
* @rindex: Read index
*/
struct k3_ring_state {
u32 free;
u32 occ;
u32 windex;
u32 rindex;
};
/**
* struct k3_ring - RA Ring descriptor
*
@ -121,10 +136,6 @@ struct k3_ring_ops {
* @elm_size: Size of the ring element
* @mode: Ring mode
* @flags: flags
* @free: Number of free elements
* @occ: Ring occupancy
* @windex: Write index (only for @K3_RINGACC_RING_MODE_RING)
* @rindex: Read index (only for @K3_RINGACC_RING_MODE_RING)
* @ring_id: Ring Id
* @parent: Pointer on struct @k3_ringacc
* @use_count: Use count for shared rings
@ -143,10 +154,7 @@ struct k3_ring {
u32 flags;
#define K3_RING_FLAG_BUSY BIT(1)
#define K3_RING_FLAG_SHARED BIT(2)
u32 free;
u32 occ;
u32 windex;
u32 rindex;
struct k3_ring_state state;
u32 ring_id;
struct k3_ringacc *parent;
u32 use_count;
@ -339,10 +347,7 @@ void k3_ringacc_ring_reset(struct k3_ring *ring)
if (!ring || !(ring->flags & K3_RING_FLAG_BUSY))
return;
ring->occ = 0;
ring->free = 0;
ring->rindex = 0;
ring->windex = 0;
memset(&ring->state, 0, sizeof(ring->state));
k3_ringacc_ring_reset_sci(ring);
}
@ -590,10 +595,7 @@ int k3_ringacc_ring_cfg(struct k3_ring *ring, struct k3_ring_cfg *cfg)
ring->size = cfg->size;
ring->elm_size = cfg->elm_size;
ring->mode = cfg->mode;
ring->occ = 0;
ring->free = 0;
ring->rindex = 0;
ring->windex = 0;
memset(&ring->state, 0, sizeof(ring->state));
if (ring->proxy_id != K3_RINGACC_PROXY_NOT_USED)
ring->proxy = ringacc->proxy_target_base +
@ -664,10 +666,10 @@ u32 k3_ringacc_ring_get_free(struct k3_ring *ring)
if (!ring || !(ring->flags & K3_RING_FLAG_BUSY))
return -EINVAL;
if (!ring->free)
ring->free = ring->size - readl(&ring->rt->occ);
if (!ring->state.free)
ring->state.free = ring->size - readl(&ring->rt->occ);
return ring->free;
return ring->state.free;
}
EXPORT_SYMBOL_GPL(k3_ringacc_ring_get_free);
@ -738,7 +740,7 @@ static int k3_ringacc_ring_access_proxy(struct k3_ring *ring, void *elem,
"proxy:memcpy_fromio(x): --> ptr(%p), mode:%d\n", ptr,
access_mode);
memcpy_fromio(elem, ptr, (4 << ring->elm_size));
ring->occ--;
ring->state.occ--;
break;
case K3_RINGACC_ACCESS_MODE_PUSH_TAIL:
case K3_RINGACC_ACCESS_MODE_PUSH_HEAD:
@ -746,14 +748,14 @@ static int k3_ringacc_ring_access_proxy(struct k3_ring *ring, void *elem,
"proxy:memcpy_toio(x): --> ptr(%p), mode:%d\n", ptr,
access_mode);
memcpy_toio(ptr, elem, (4 << ring->elm_size));
ring->free--;
ring->state.free--;
break;
default:
return -EINVAL;
}
dev_dbg(ring->parent->dev, "proxy: free%d occ%d\n", ring->free,
ring->occ);
dev_dbg(ring->parent->dev, "proxy: free%d occ%d\n", ring->state.free,
ring->state.occ);
return 0;
}
@ -808,7 +810,7 @@ static int k3_ringacc_ring_access_io(struct k3_ring *ring, void *elem,
"memcpy_fromio(x): --> ptr(%p), mode:%d\n", ptr,
access_mode);
memcpy_fromio(elem, ptr, (4 << ring->elm_size));
ring->occ--;
ring->state.occ--;
break;
case K3_RINGACC_ACCESS_MODE_PUSH_TAIL:
case K3_RINGACC_ACCESS_MODE_PUSH_HEAD:
@ -816,14 +818,15 @@ static int k3_ringacc_ring_access_io(struct k3_ring *ring, void *elem,
"memcpy_toio(x): --> ptr(%p), mode:%d\n", ptr,
access_mode);
memcpy_toio(ptr, elem, (4 << ring->elm_size));
ring->free--;
ring->state.free--;
break;
default:
return -EINVAL;
}
dev_dbg(ring->parent->dev, "free%d index%d occ%d index%d\n", ring->free,
ring->windex, ring->occ, ring->rindex);
dev_dbg(ring->parent->dev, "free%d index%d occ%d index%d\n",
ring->state.free, ring->state.windex, ring->state.occ,
ring->state.rindex);
return 0;
}
@ -855,16 +858,16 @@ static int k3_ringacc_ring_push_mem(struct k3_ring *ring, void *elem)
{
void *elem_ptr;
elem_ptr = k3_ringacc_get_elm_addr(ring, ring->windex);
elem_ptr = k3_ringacc_get_elm_addr(ring, ring->state.windex);
memcpy(elem_ptr, elem, (4 << ring->elm_size));
ring->windex = (ring->windex + 1) % ring->size;
ring->free--;
ring->state.windex = (ring->state.windex + 1) % ring->size;
ring->state.free--;
writel(1, &ring->rt->db);
dev_dbg(ring->parent->dev, "ring_push_mem: free%d index%d\n",
ring->free, ring->windex);
ring->state.free, ring->state.windex);
return 0;
}
@ -873,16 +876,16 @@ static int k3_ringacc_ring_pop_mem(struct k3_ring *ring, void *elem)
{
void *elem_ptr;
elem_ptr = k3_ringacc_get_elm_addr(ring, ring->rindex);
elem_ptr = k3_ringacc_get_elm_addr(ring, ring->state.rindex);
memcpy(elem, elem_ptr, (4 << ring->elm_size));
ring->rindex = (ring->rindex + 1) % ring->size;
ring->occ--;
ring->state.rindex = (ring->state.rindex + 1) % ring->size;
ring->state.occ--;
writel(-1, &ring->rt->db);
dev_dbg(ring->parent->dev, "ring_pop_mem: occ%d index%d pos_ptr%p\n",
ring->occ, ring->rindex, elem_ptr);
ring->state.occ, ring->state.rindex, elem_ptr);
return 0;
}
@ -893,8 +896,8 @@ int k3_ringacc_ring_push(struct k3_ring *ring, void *elem)
if (!ring || !(ring->flags & K3_RING_FLAG_BUSY))
return -EINVAL;
dev_dbg(ring->parent->dev, "ring_push: free%d index%d\n", ring->free,
ring->windex);
dev_dbg(ring->parent->dev, "ring_push: free%d index%d\n",
ring->state.free, ring->state.windex);
if (k3_ringacc_ring_is_full(ring))
return -ENOMEM;
@ -914,7 +917,7 @@ int k3_ringacc_ring_push_head(struct k3_ring *ring, void *elem)
return -EINVAL;
dev_dbg(ring->parent->dev, "ring_push_head: free%d index%d\n",
ring->free, ring->windex);
ring->state.free, ring->state.windex);
if (k3_ringacc_ring_is_full(ring))
return -ENOMEM;
@ -933,13 +936,13 @@ int k3_ringacc_ring_pop(struct k3_ring *ring, void *elem)
if (!ring || !(ring->flags & K3_RING_FLAG_BUSY))
return -EINVAL;
if (!ring->occ)
ring->occ = k3_ringacc_ring_get_occ(ring);
if (!ring->state.occ)
ring->state.occ = k3_ringacc_ring_get_occ(ring);
dev_dbg(ring->parent->dev, "ring_pop: occ%d index%d\n", ring->occ,
ring->rindex);
dev_dbg(ring->parent->dev, "ring_pop: occ%d index%d\n", ring->state.occ,
ring->state.rindex);
if (!ring->occ)
if (!ring->state.occ)
return -ENODATA;
if (ring->ops && ring->ops->pop_head)
@ -956,13 +959,13 @@ int k3_ringacc_ring_pop_tail(struct k3_ring *ring, void *elem)
if (!ring || !(ring->flags & K3_RING_FLAG_BUSY))
return -EINVAL;
if (!ring->occ)
ring->occ = k3_ringacc_ring_get_occ(ring);
if (!ring->state.occ)
ring->state.occ = k3_ringacc_ring_get_occ(ring);
dev_dbg(ring->parent->dev, "ring_pop_tail: occ%d index%d\n", ring->occ,
ring->rindex);
dev_dbg(ring->parent->dev, "ring_pop_tail: occ%d index%d\n",
ring->state.occ, ring->state.rindex);
if (!ring->occ)
if (!ring->state.occ)
return -ENODATA;
if (ring->ops && ring->ops->pop_tail)