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-rw-r--r--drivers/soc/fsl/dpio/dpio-service.c68
-rw-r--r--drivers/soc/fsl/dpio/qbman-portal.c96
-rw-r--r--drivers/soc/fsl/dpio/qbman-portal.h58
-rw-r--r--include/soc/fsl/dpaa2-io.h4
4 files changed, 226 insertions, 0 deletions
diff --git a/drivers/soc/fsl/dpio/dpio-service.c b/drivers/soc/fsl/dpio/dpio-service.c
index 321a92613a7e..ec0837ff039a 100644
--- a/drivers/soc/fsl/dpio/dpio-service.c
+++ b/drivers/soc/fsl/dpio/dpio-service.c
@@ -601,3 +601,71 @@ struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last)
return ret;
}
EXPORT_SYMBOL_GPL(dpaa2_io_store_next);
+
+/**
+ * dpaa2_io_query_fq_count() - Get the frame and byte count for a given fq.
+ * @d: the given DPIO object.
+ * @fqid: the id of frame queue to be queried.
+ * @fcnt: the queried frame count.
+ * @bcnt: the queried byte count.
+ *
+ * Knowing the FQ count at run-time can be useful in debugging situations.
+ * The instantaneous frame- and byte-count are hereby returned.
+ *
+ * Return 0 for a successful query, and negative error code if query fails.
+ */
+int dpaa2_io_query_fq_count(struct dpaa2_io *d, u32 fqid,
+ u32 *fcnt, u32 *bcnt)
+{
+ struct qbman_fq_query_np_rslt state;
+ struct qbman_swp *swp;
+ unsigned long irqflags;
+ int ret;
+
+ d = service_select(d);
+ if (!d)
+ return -ENODEV;
+
+ swp = d->swp;
+ spin_lock_irqsave(&d->lock_mgmt_cmd, irqflags);
+ ret = qbman_fq_query_state(swp, fqid, &state);
+ spin_unlock_irqrestore(&d->lock_mgmt_cmd, irqflags);
+ if (ret)
+ return ret;
+ *fcnt = qbman_fq_state_frame_count(&state);
+ *bcnt = qbman_fq_state_byte_count(&state);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dpaa2_io_query_fq_count);
+
+/**
+ * dpaa2_io_query_bp_count() - Query the number of buffers currently in a
+ * buffer pool.
+ * @d: the given DPIO object.
+ * @bpid: the index of buffer pool to be queried.
+ * @num: the queried number of buffers in the buffer pool.
+ *
+ * Return 0 for a successful query, and negative error code if query fails.
+ */
+int dpaa2_io_query_bp_count(struct dpaa2_io *d, u16 bpid, u32 *num)
+{
+ struct qbman_bp_query_rslt state;
+ struct qbman_swp *swp;
+ unsigned long irqflags;
+ int ret;
+
+ d = service_select(d);
+ if (!d)
+ return -ENODEV;
+
+ swp = d->swp;
+ spin_lock_irqsave(&d->lock_mgmt_cmd, irqflags);
+ ret = qbman_bp_query(swp, bpid, &state);
+ spin_unlock_irqrestore(&d->lock_mgmt_cmd, irqflags);
+ if (ret)
+ return ret;
+ *num = qbman_bp_info_num_free_bufs(&state);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(dpaa2_io_query_bp_count);
diff --git a/drivers/soc/fsl/dpio/qbman-portal.c b/drivers/soc/fsl/dpio/qbman-portal.c
index cf1d448ea468..0bddb85c0ae5 100644
--- a/drivers/soc/fsl/dpio/qbman-portal.c
+++ b/drivers/soc/fsl/dpio/qbman-portal.c
@@ -1003,3 +1003,99 @@ int qbman_swp_CDAN_set(struct qbman_swp *s, u16 channelid,
return 0;
}
+
+#define QBMAN_RESPONSE_VERB_MASK 0x7f
+#define QBMAN_FQ_QUERY_NP 0x45
+#define QBMAN_BP_QUERY 0x32
+
+struct qbman_fq_query_desc {
+ u8 verb;
+ u8 reserved[3];
+ __le32 fqid;
+ u8 reserved2[56];
+};
+
+int qbman_fq_query_state(struct qbman_swp *s, u32 fqid,
+ struct qbman_fq_query_np_rslt *r)
+{
+ struct qbman_fq_query_desc *p;
+ void *resp;
+
+ p = (struct qbman_fq_query_desc *)qbman_swp_mc_start(s);
+ if (!p)
+ return -EBUSY;
+
+ /* FQID is a 24 bit value */
+ p->fqid = cpu_to_le32(fqid & 0x00FFFFFF);
+ resp = qbman_swp_mc_complete(s, p, QBMAN_FQ_QUERY_NP);
+ if (!resp) {
+ pr_err("qbman: Query FQID %d NP fields failed, no response\n",
+ fqid);
+ return -EIO;
+ }
+ *r = *(struct qbman_fq_query_np_rslt *)resp;
+ /* Decode the outcome */
+ WARN_ON((r->verb & QBMAN_RESPONSE_VERB_MASK) != QBMAN_FQ_QUERY_NP);
+
+ /* Determine success or failure */
+ if (r->rslt != QBMAN_MC_RSLT_OK) {
+ pr_err("Query NP fields of FQID 0x%x failed, code=0x%02x\n",
+ p->fqid, r->rslt);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+u32 qbman_fq_state_frame_count(const struct qbman_fq_query_np_rslt *r)
+{
+ return (le32_to_cpu(r->frm_cnt) & 0x00FFFFFF);
+}
+
+u32 qbman_fq_state_byte_count(const struct qbman_fq_query_np_rslt *r)
+{
+ return le32_to_cpu(r->byte_cnt);
+}
+
+struct qbman_bp_query_desc {
+ u8 verb;
+ u8 reserved;
+ __le16 bpid;
+ u8 reserved2[60];
+};
+
+int qbman_bp_query(struct qbman_swp *s, u16 bpid,
+ struct qbman_bp_query_rslt *r)
+{
+ struct qbman_bp_query_desc *p;
+ void *resp;
+
+ p = (struct qbman_bp_query_desc *)qbman_swp_mc_start(s);
+ if (!p)
+ return -EBUSY;
+
+ p->bpid = cpu_to_le16(bpid);
+ resp = qbman_swp_mc_complete(s, p, QBMAN_BP_QUERY);
+ if (!resp) {
+ pr_err("qbman: Query BPID %d fields failed, no response\n",
+ bpid);
+ return -EIO;
+ }
+ *r = *(struct qbman_bp_query_rslt *)resp;
+ /* Decode the outcome */
+ WARN_ON((r->verb & QBMAN_RESPONSE_VERB_MASK) != QBMAN_BP_QUERY);
+
+ /* Determine success or failure */
+ if (r->rslt != QBMAN_MC_RSLT_OK) {
+ pr_err("Query fields of BPID 0x%x failed, code=0x%02x\n",
+ bpid, r->rslt);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+u32 qbman_bp_info_num_free_bufs(struct qbman_bp_query_rslt *a)
+{
+ return le32_to_cpu(a->fill);
+}
diff --git a/drivers/soc/fsl/dpio/qbman-portal.h b/drivers/soc/fsl/dpio/qbman-portal.h
index 89d1dd9969b6..fa35fc1afeaa 100644
--- a/drivers/soc/fsl/dpio/qbman-portal.h
+++ b/drivers/soc/fsl/dpio/qbman-portal.h
@@ -441,4 +441,62 @@ static inline void *qbman_swp_mc_complete(struct qbman_swp *swp, void *cmd,
return cmd;
}
+/* Query APIs */
+struct qbman_fq_query_np_rslt {
+ u8 verb;
+ u8 rslt;
+ u8 st1;
+ u8 st2;
+ u8 reserved[2];
+ __le16 od1_sfdr;
+ __le16 od2_sfdr;
+ __le16 od3_sfdr;
+ __le16 ra1_sfdr;
+ __le16 ra2_sfdr;
+ __le32 pfdr_hptr;
+ __le32 pfdr_tptr;
+ __le32 frm_cnt;
+ __le32 byte_cnt;
+ __le16 ics_surp;
+ u8 is;
+ u8 reserved2[29];
+};
+
+int qbman_fq_query_state(struct qbman_swp *s, u32 fqid,
+ struct qbman_fq_query_np_rslt *r);
+u32 qbman_fq_state_frame_count(const struct qbman_fq_query_np_rslt *r);
+u32 qbman_fq_state_byte_count(const struct qbman_fq_query_np_rslt *r);
+
+struct qbman_bp_query_rslt {
+ u8 verb;
+ u8 rslt;
+ u8 reserved[4];
+ u8 bdi;
+ u8 state;
+ __le32 fill;
+ __le32 hdotr;
+ __le16 swdet;
+ __le16 swdxt;
+ __le16 hwdet;
+ __le16 hwdxt;
+ __le16 swset;
+ __le16 swsxt;
+ __le16 vbpid;
+ __le16 icid;
+ __le64 bpscn_addr;
+ __le64 bpscn_ctx;
+ __le16 hw_targ;
+ u8 dbe;
+ u8 reserved2;
+ u8 sdcnt;
+ u8 hdcnt;
+ u8 sscnt;
+ u8 reserved3[9];
+};
+
+int qbman_bp_query(struct qbman_swp *s, u16 bpid,
+ struct qbman_bp_query_rslt *r);
+
+u32 qbman_bp_info_num_free_bufs(struct qbman_bp_query_rslt *a);
+
#endif /* __FSL_QBMAN_PORTAL_H */
diff --git a/include/soc/fsl/dpaa2-io.h b/include/soc/fsl/dpaa2-io.h
index 70997ab2146c..3fbd71c27ba3 100644
--- a/include/soc/fsl/dpaa2-io.h
+++ b/include/soc/fsl/dpaa2-io.h
@@ -116,4 +116,8 @@ struct dpaa2_io_store *dpaa2_io_store_create(unsigned int max_frames,
void dpaa2_io_store_destroy(struct dpaa2_io_store *s);
struct dpaa2_dq *dpaa2_io_store_next(struct dpaa2_io_store *s, int *is_last);
+int dpaa2_io_query_fq_count(struct dpaa2_io *d, u32 fqid,
+ u32 *fcnt, u32 *bcnt);
+int dpaa2_io_query_bp_count(struct dpaa2_io *d, u16 bpid,
+ u32 *num);
#endif /* __FSL_DPAA2_IO_H */
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