Add new APIs for counting and extracting allocated objects
from a single cache line in the batch alloc memory.
Signed-off-by: Ashwin Sekhar T K <asek...@marvell.com>
---
drivers/common/cnxk/roc_npa.h | 78 ++++++++++++++++++++++++++++++-----
1 file changed, 67 insertions(+), 11 deletions(-)
diff --git a/drivers/common/cnxk/roc_npa.h b/drivers/common/cnxk/roc_npa.h
index e1e164499e..4ad5f044b5 100644
--- a/drivers/common/cnxk/roc_npa.h
+++ b/drivers/common/cnxk/roc_npa.h
@@ -209,7 +209,6 @@ roc_npa_aura_batch_alloc_issue(uint64_t aura_handle,
uint64_t *buf,
unsigned int num, const int dis_wait,
const int drop)
{
- unsigned int i;
int64_t *addr;
uint64_t res;
union {
@@ -220,10 +219,6 @@ roc_npa_aura_batch_alloc_issue(uint64_t aura_handle,
uint64_t *buf,
if (num > ROC_CN10K_NPA_BATCH_ALLOC_MAX_PTRS)
return -1;
- /* Zero first word of every cache line */
- for (i = 0; i < num; i += (ROC_ALIGN / sizeof(uint64_t)))
- buf[i] = 0;
-
addr = (int64_t *)(roc_npa_aura_handle_to_base(aura_handle) +
NPA_LF_AURA_BATCH_ALLOC);
cmp.u = 0;
@@ -240,6 +235,9 @@ roc_npa_aura_batch_alloc_issue(uint64_t aura_handle,
uint64_t *buf,
return 0;
}
+/*
+ * Wait for a batch alloc operation on a cache line to complete.
+ */
static inline void
roc_npa_batch_alloc_wait(uint64_t *cache_line, unsigned int wait_us)
{
@@ -255,6 +253,23 @@ roc_npa_batch_alloc_wait(uint64_t *cache_line, unsigned
int wait_us)
break;
}
+/*
+ * Count the number of pointers in a single batch alloc cache line.
+ */
+static inline unsigned int
+roc_npa_aura_batch_alloc_count_line(uint64_t *line, unsigned int wait_us)
+{
+ struct npa_batch_alloc_status_s *status;
+
+ status = (struct npa_batch_alloc_status_s *)line;
+ roc_npa_batch_alloc_wait(line, wait_us);
+
+ return status->count;
+}
+
+/*
+ * Count the number of pointers in a sequence of batch alloc cache lines.
+ */
static inline unsigned int
roc_npa_aura_batch_alloc_count(uint64_t *aligned_buf, unsigned int num,
unsigned int wait_us)
@@ -279,6 +294,40 @@ roc_npa_aura_batch_alloc_count(uint64_t *aligned_buf,
unsigned int num,
return count;
}
+/*
+ * Extract allocated pointers from a single batch alloc cache line. This api
+ * only extracts the required number of pointers from the cache line and it
+ * adjusts the statsus->count so that a subsequent call to this api can
+ * extract the remaining pointers in the cache line appropriately.
+ */
+static inline unsigned int
+roc_npa_aura_batch_alloc_extract_line(uint64_t *buf, uint64_t *line,
+ unsigned int num, unsigned int *rem)
+{
+ struct npa_batch_alloc_status_s *status;
+ unsigned int avail;
+
+ status = (struct npa_batch_alloc_status_s *)line;
+ roc_npa_batch_alloc_wait(line, 0);
+ avail = status->count;
+ num = avail > num ? num : avail;
+ if (num)
+ memcpy(buf, &line[avail - num], num * sizeof(uint64_t));
+ avail -= num;
+ if (avail == 0) {
+ /* Clear the lowest 7 bits of the first pointer */
+ buf[0] &= ~0x7FUL;
+ status->ccode = 0;
+ }
+ status->count = avail;
+ *rem = avail;
+
+ return num;
+}
+
+/*
+ * Extract all allocated pointers from a sequence of batch alloc cache lines.
+ */
static inline unsigned int
roc_npa_aura_batch_alloc_extract(uint64_t *buf, uint64_t *aligned_buf,
unsigned int num)
@@ -330,11 +379,15 @@ roc_npa_aura_op_bulk_free(uint64_t aura_handle, uint64_t
const *buf,
}
}
+/*
+ * Issue a batch alloc operation on a sequence of cache lines, wait for the
+ * batch alloc to complete and copy the pointers out into the user buffer.
+ */
static inline unsigned int
roc_npa_aura_op_batch_alloc(uint64_t aura_handle, uint64_t *buf,
- uint64_t *aligned_buf, unsigned int num,
- const int dis_wait, const int drop,
- const int partial)
+ unsigned int num, uint64_t *aligned_buf,
+ unsigned int aligned_buf_sz, const int dis_wait,
+ const int drop, const int partial)
{
unsigned int count, chunk, num_alloc;
@@ -344,9 +397,12 @@ roc_npa_aura_op_batch_alloc(uint64_t aura_handle, uint64_t
*buf,
count = 0;
while (num) {
- chunk = (num > ROC_CN10K_NPA_BATCH_ALLOC_MAX_PTRS) ?
- ROC_CN10K_NPA_BATCH_ALLOC_MAX_PTRS :
- num;
+ /* Make sure that the pointers allocated fit into the cache
+ * lines reserved.
+ */
+ chunk = aligned_buf_sz / sizeof(uint64_t);
+ chunk = PLT_MIN(num, chunk);
+ chunk = PLT_MIN((int)chunk, ROC_CN10K_NPA_BATCH_ALLOC_MAX_PTRS);
if (roc_npa_aura_batch_alloc_issue(aura_handle, aligned_buf,
chunk, dis_wait, drop))
--
2.25.1
