Move the free, occ, windex and rinfex under a struct. We can use memset to zero them and it will allow a cleaner way to extend the variables for duplex rings.
Signed-off-by: Vignesh Raghavendra vigneshr@ti.com --- drivers/soc/ti/k3-navss-ringacc.c | 89 ++++++++++++++++--------------- 1 file changed, 46 insertions(+), 43 deletions(-)
diff --git a/drivers/soc/ti/k3-navss-ringacc.c b/drivers/soc/ti/k3-navss-ringacc.c index ecc4b8b5a0..f31ffaf5ae 100644 --- a/drivers/soc/ti/k3-navss-ringacc.c +++ b/drivers/soc/ti/k3-navss-ringacc.c @@ -126,6 +126,22 @@ struct k3_nav_ring_ops { int (*pop_head)(struct k3_nav_ring *ring, void *elm); };
+/** + * struct k3_nav_ring_state - Internal state tracking structure + * + * @free: Number of free entries + * @occ: Occupancy + * @windex: Write index + * @rindex: Read index + */ +struct k3_nav_ring_state { + u32 free; + u32 occ; + u32 windex; + u32 rindex; + u32 tdown_complete:1; +}; + /** * struct k3_nav_ring - RA Ring descriptor * @@ -139,10 +155,6 @@ struct k3_nav_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_NAV_RINGACC_RING_MODE_RING) - * @rindex - Read index (only for @K3_NAV_RINGACC_RING_MODE_RING) * @ring_id - Ring Id * @parent - Pointer on struct @k3_nav_ringacc * @use_count - Use count for shared rings @@ -161,10 +173,7 @@ struct k3_nav_ring { u32 flags; #define KNAV_RING_FLAG_BUSY BIT(1) #define K3_NAV_RING_FLAG_SHARED BIT(2) - u32 free; - u32 occ; - u32 windex; - u32 rindex; + struct k3_nav_ring_state state; u32 ring_id; struct k3_nav_ringacc *parent; u32 use_count; @@ -338,10 +347,7 @@ void k3_nav_ringacc_ring_reset(struct k3_nav_ring *ring) if (!ring || !(ring->flags & KNAV_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); } @@ -546,10 +552,7 @@ int k3_nav_ringacc_ring_cfg(struct k3_nav_ring *ring, 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 + @@ -625,10 +628,10 @@ u32 k3_nav_ringacc_ring_get_free(struct k3_nav_ring *ring) if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY)) return -EINVAL;
- if (!ring->free) - ring->free = ring->size - ringacc_readl(&ring->rt->occ); + if (!ring->state.free) + ring->state.free = ring->size - ringacc_readl(&ring->rt->occ);
- return ring->free; + return ring->state.free; }
u32 k3_nav_ringacc_ring_get_occ(struct k3_nav_ring *ring) @@ -694,21 +697,21 @@ static int k3_nav_ringacc_ring_access_proxy( pr_debug("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: pr_debug("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; }
pr_debug("proxy: free%d occ%d\n", - ring->free, ring->occ); + ring->state.free, ring->state.occ); return 0; }
@@ -763,21 +766,21 @@ static int k3_nav_ringacc_ring_access_io( pr_debug("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: pr_debug("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; }
pr_debug("free%d index%d occ%d index%d\n", - ring->free, ring->windex, ring->occ, ring->rindex); + ring->state.free, ring->state.windex, ring->state.occ, ring->state.rindex); return 0; }
@@ -810,7 +813,7 @@ static int k3_nav_ringacc_ring_push_mem(struct k3_nav_ring *ring, void *elem) { void *elem_ptr;
- elem_ptr = k3_nav_ringacc_get_elm_addr(ring, ring->windex); + elem_ptr = k3_nav_ringacc_get_elm_addr(ring, ring->state.windex);
memcpy(elem_ptr, elem, (4 << ring->elm_size));
@@ -819,12 +822,12 @@ static int k3_nav_ringacc_ring_push_mem(struct k3_nav_ring *ring, void *elem) ring->size * (4 << ring->elm_size), ARCH_DMA_MINALIGN));
- ring->windex = (ring->windex + 1) % ring->size; - ring->free--; + ring->state.windex = (ring->state.windex + 1) % ring->size; + ring->state.free--; ringacc_writel(1, &ring->rt->db);
pr_debug("ring_push_mem: free%d index%d\n", - ring->free, ring->windex); + ring->state.free, ring->state.windex);
return 0; } @@ -833,7 +836,7 @@ static int k3_nav_ringacc_ring_pop_mem(struct k3_nav_ring *ring, void *elem) { void *elem_ptr;
- elem_ptr = k3_nav_ringacc_get_elm_addr(ring, ring->rindex); + elem_ptr = k3_nav_ringacc_get_elm_addr(ring, ring->state.rindex);
invalidate_dcache_range((unsigned long)ring->ring_mem_virt, ALIGN((unsigned long)ring->ring_mem_virt + @@ -842,12 +845,12 @@ static int k3_nav_ringacc_ring_pop_mem(struct k3_nav_ring *ring, void *elem)
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--; ringacc_writel(-1, &ring->rt->db);
pr_debug("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; }
@@ -859,7 +862,7 @@ int k3_nav_ringacc_ring_push(struct k3_nav_ring *ring, void *elem) return -EINVAL;
pr_debug("ring_push%d: free%d index%d\n", - ring->ring_id, ring->free, ring->windex); + ring->ring_id, ring->state.free, ring->state.windex);
if (k3_nav_ringacc_ring_is_full(ring)) return -ENOMEM; @@ -878,7 +881,7 @@ int k3_nav_ringacc_ring_push_head(struct k3_nav_ring *ring, void *elem) return -EINVAL;
pr_debug("ring_push_head: free%d index%d\n", - ring->free, ring->windex); + ring->state.free, ring->state.windex);
if (k3_nav_ringacc_ring_is_full(ring)) return -ENOMEM; @@ -896,13 +899,13 @@ int k3_nav_ringacc_ring_pop(struct k3_nav_ring *ring, void *elem) if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY)) return -EINVAL;
- if (!ring->occ) - ring->occ = k3_nav_ringacc_ring_get_occ(ring); + if (!ring->state.occ) + ring->state.occ = k3_nav_ringacc_ring_get_occ(ring);
pr_debug("ring_pop%d: occ%d index%d\n", - ring->ring_id, ring->occ, ring->rindex); + ring->ring_id, ring->state.occ, ring->state.rindex);
- if (!ring->occ) + if (!ring->state.occ && !ring->state.tdown_complete) return -ENODATA;
if (ring->ops && ring->ops->pop_head) @@ -918,13 +921,13 @@ int k3_nav_ringacc_ring_pop_tail(struct k3_nav_ring *ring, void *elem) if (!ring || !(ring->flags & KNAV_RING_FLAG_BUSY)) return -EINVAL;
- if (!ring->occ) - ring->occ = k3_nav_ringacc_ring_get_occ(ring); + if (!ring->state.occ) + ring->state.occ = k3_nav_ringacc_ring_get_occ(ring);
pr_debug("ring_pop_tail: occ%d index%d\n", - ring->occ, ring->rindex); + ring->state.occ, ring->state.rindex);
- if (!ring->occ) + if (!ring->state.occ) return -ENODATA;
if (ring->ops && ring->ops->pop_tail)