soc: fsl: dpio: Adding QMAN multiple enqueue interface

Update of QMAN the interface to enqueue frame. We now support multiple
enqueue (qbman_swp_enqueue_multiple) and multiple enqueue with
a table of descriptor (qbman_swp_enqueue_multiple_desc).

Signed-off-by: Youri Querry <[e-mail]>
Acked-by: Roy Pledge <[e-mail]>
Signed-off-by: Li Yang <[e-mail]>

drivers/soc/fsl/dpio/dpio-service.c

···
 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
 /*
  * Copyright 2014-2016 Freescale Semiconductor Inc.
- * Copyright 2016 NXP
+ * Copyright 2016-2019 NXP
  *
  */
 #include <linux/types.h>
···
 EXPORT_SYMBOL(dpaa2_io_service_enqueue_fq);
 
 /**
+ * dpaa2_io_service_enqueue_multiple_fq() - Enqueue multiple frames
+ * to a frame queue using one fqid.
+ * @d: the given DPIO service.
+ * @fqid: the given frame queue id.
+ * @fd: the frame descriptor which is enqueued.
+ * @nb: number of frames to be enqueud
+ *
+ * Return 0 for successful enqueue, -EBUSY if the enqueue ring is not ready,
+ * or -ENODEV if there is no dpio service.
+ */
+int dpaa2_io_service_enqueue_multiple_fq(struct dpaa2_io *d,
+				u32 fqid,
+				const struct dpaa2_fd *fd,
+				int nb)
+{
+	struct qbman_eq_desc ed;
+
+	d = service_select(d);
+	if (!d)
+		return -ENODEV;
+
+	qbman_eq_desc_clear(&ed);
+	qbman_eq_desc_set_no_orp(&ed, 0);
+	qbman_eq_desc_set_fq(&ed, fqid);
+
+	return qbman_swp_enqueue_multiple(d->swp, &ed, fd, 0, nb);
+}
+EXPORT_SYMBOL(dpaa2_io_service_enqueue_multiple_fq);
+
+/**
+ * dpaa2_io_service_enqueue_multiple_desc_fq() - Enqueue multiple frames
+ * to different frame queue using a list of fqids.
+ * @d: the given DPIO service.
+ * @fqid: the given list of frame queue ids.
+ * @fd: the frame descriptor which is enqueued.
+ * @nb: number of frames to be enqueud
+ *
+ * Return 0 for successful enqueue, -EBUSY if the enqueue ring is not ready,
+ * or -ENODEV if there is no dpio service.
+ */
+int dpaa2_io_service_enqueue_multiple_desc_fq(struct dpaa2_io *d,
+				u32 *fqid,
+				const struct dpaa2_fd *fd,
+				int nb)
+{
+	int i;
+	struct qbman_eq_desc ed[32];
+
+	d = service_select(d);
+	if (!d)
+		return -ENODEV;
+
+	for (i = 0; i < nb; i++) {
+		qbman_eq_desc_clear(&ed[i]);
+		qbman_eq_desc_set_no_orp(&ed[i], 0);
+		qbman_eq_desc_set_fq(&ed[i], fqid[i]);
+	}
+
+	return qbman_swp_enqueue_multiple_desc(d->swp, &ed[0], fd, nb);
+}
+EXPORT_SYMBOL(dpaa2_io_service_enqueue_multiple_desc_fq);
+
+/**
  * dpaa2_io_service_enqueue_qd() - Enqueue a frame to a QD.
  * @d: the given DPIO service.
  * @qdid: the given queuing destination id.
···
 
 /**
  * dpaa2_io_store_create() - Create the dma memory storage for dequeue result.
- * @max_frames: the maximum number of dequeued result for frames, must be <= 16.
+ * @max_frames: the maximum number of dequeued result for frames, must be <= 32.
  * @dev:        the device to allow mapping/unmapping the DMAable region.
  *
  * The size of the storage is "max_frames*sizeof(struct dpaa2_dq)".
···
 	struct dpaa2_io_store *ret;
 	size_t size;
 
-	if (!max_frames || (max_frames > 16))
+	if (!max_frames || (max_frames > 32))
 		return NULL;
 
 	ret = kmalloc(sizeof(*ret), GFP_KERNEL);

drivers/soc/fsl/dpio/qbman-portal.c

···
 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
 /*
  * Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
- * Copyright 2016 NXP
+ * Copyright 2016-2019 NXP
  *
  */
 
···
 #include <soc/fsl/dpaa2-global.h>
 
 #include "qbman-portal.h"
-
-#define QMAN_REV_4000   0x04000000
-#define QMAN_REV_4100   0x04010000
-#define QMAN_REV_4101   0x04010001
-#define QMAN_REV_5000   0x05000000
-
-#define QMAN_REV_MASK   0xffff0000
 
 /* All QBMan command and result structures use this "valid bit" encoding */
 #define QB_VALID_BIT ((u32)0x80)
···
  */
 struct qbman_swp *qbman_swp_init(const struct qbman_swp_desc *d)
 {
-	struct qbman_swp *p = kmalloc(sizeof(*p), GFP_KERNEL);
+	struct qbman_swp *p = kzalloc(sizeof(*p), GFP_KERNEL);
 	u32 reg;
 
 	if (!p)
···
 int qbman_swp_enqueue(struct qbman_swp *s, const struct qbman_eq_desc *d,
 		      const struct dpaa2_fd *fd)
 {
-	struct qbman_eq_desc *p;
+	struct qbman_eq_desc_with_fd *p;
 	u32 eqar = qbman_read_register(s, QBMAN_CINH_SWP_EQAR);
 
 	if (!EQAR_SUCCESS(eqar))
 		return -EBUSY;
 
 	p = qbman_get_cmd(s, QBMAN_CENA_SWP_EQCR(EQAR_IDX(eqar)));
-	memcpy(&p->dca, &d->dca, 31);
+	/* This is mapped as DEVICE type memory, writes are
+	 * with address alignment:
+	 * desc.dca address alignment = 1
+	 * desc.seqnum address alignment = 2
+	 * desc.orpid address alignment = 4
+	 * desc.tgtid address alignment = 8
+	 */
+	p->desc.dca = d->dca;
+	p->desc.seqnum = d->seqnum;
+	p->desc.orpid = d->orpid;
+	memcpy(&p->desc.tgtid, &d->tgtid, 24);
 	memcpy(&p->fd, fd, sizeof(*fd));
 
 	if ((s->desc->qman_version & QMAN_REV_MASK) < QMAN_REV_5000) {
 		/* Set the verb byte, have to substitute in the valid-bit */
 		dma_wmb();
-		p->verb = d->verb | EQAR_VB(eqar);
+		p->desc.verb = d->verb | EQAR_VB(eqar);
 	} else {
-		p->verb = d->verb | EQAR_VB(eqar);
+		p->desc.verb = d->verb | EQAR_VB(eqar);
 		dma_wmb();
 		qbman_write_eqcr_am_rt_register(s, EQAR_IDX(eqar));
 	}
 
 	return 0;
+}
+
+/**
+ * qbman_swp_enqueue_multiple() - Issue a multi enqueue command
+ * using one enqueue descriptor
+ * @s:  the software portal used for enqueue
+ * @d:  the enqueue descriptor
+ * @fd: table pointer of frame descriptor table to be enqueued
+ * @flags: table pointer of flags, not used for the moment
+ * @num_frames: number of fd to be enqueued
+ *
+ * Return the number of fd enqueued, or a negative error number.
+ */
+int qbman_swp_enqueue_multiple(struct qbman_swp *s,
+			       const struct qbman_eq_desc *d,
+			       const struct dpaa2_fd *fd,
+			       uint32_t *flags,
+			       int num_frames)
+{
+	int count = 0;
+
+	while (count < num_frames) {
+		if (qbman_swp_enqueue(s, d, fd) != 0)
+			break;
+		count++;
+	}
+
+	return count;
+}
+
+/**
+ * qbman_swp_enqueue_multiple_desc() - Issue a multi enqueue command
+ * using multiple enqueue descriptor
+ * @s:  the software portal used for enqueue
+ * @d:  table of minimal enqueue descriptor
+ * @fd: table pointer of frame descriptor table to be enqueued
+ * @num_frames: number of fd to be enqueued
+ *
+ * Return the number of fd enqueued, or a negative error number.
+ */
+int qbman_swp_enqueue_multiple_desc(struct qbman_swp *s,
+				    const struct qbman_eq_desc *d,
+				    const struct dpaa2_fd *fd,
+				    int num_frames)
+{
+	int count = 0;
+
+	while (count < num_frames) {
+		if (qbman_swp_enqueue(s, &(d[count]), fd) != 0)
+			break;
+		count++;
+	}
+
+	return count;
 }
 
 /* Static (push) dequeue */

drivers/soc/fsl/dpio/qbman-portal.h

···
 
 #include <soc/fsl/dpaa2-fd.h>
 
+#define QMAN_REV_4000   0x04000000
+#define QMAN_REV_4100   0x04010000
+#define QMAN_REV_4101   0x04010001
+#define QMAN_REV_5000   0x05000000
+
+#define QMAN_REV_MASK   0xffff0000
+
 struct dpaa2_dq;
 struct qbman_swp;
 
···
 	u8 wae;
 	u8 rspid;
 	__le64 rsp_addr;
+};
+
+struct qbman_eq_desc_with_fd {
+	struct qbman_eq_desc desc;
 	u8 fd[32];
 };
 
···
 void *qbman_swp_mc_start(struct qbman_swp *p);
 void qbman_swp_mc_submit(struct qbman_swp *p, void *cmd, u8 cmd_verb);
 void *qbman_swp_mc_result(struct qbman_swp *p);
+
+int
+qbman_swp_enqueue_multiple(struct qbman_swp *s,
+			   const struct qbman_eq_desc *d,
+			   const struct dpaa2_fd *fd,
+			   uint32_t *flags,
+			   int num_frames);
+
+int
+qbman_swp_enqueue_multiple_desc(struct qbman_swp *s,
+				const struct qbman_eq_desc *d,
+				const struct dpaa2_fd *fd,
+				int num_frames);
 
 /**
  * qbman_result_is_DQ() - check if the dequeue result is a dequeue response

include/soc/fsl/dpaa2-io.h

···
 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
 /*
  * Copyright 2014-2016 Freescale Semiconductor Inc.
- * Copyright NXP
+ * Copyright 2017-2019 NXP
  *
  */
 #ifndef __FSL_DPAA2_IO_H
···
 
 int dpaa2_io_service_enqueue_fq(struct dpaa2_io *d, u32 fqid,
 				const struct dpaa2_fd *fd);
+int dpaa2_io_service_enqueue_multiple_fq(struct dpaa2_io *d, u32 fqid,
+				const struct dpaa2_fd *fd, int number_of_frame);
+int dpaa2_io_service_enqueue_multiple_desc_fq(struct dpaa2_io *d, u32 *fqid,
+				const struct dpaa2_fd *fd, int number_of_frame);
 int dpaa2_io_service_enqueue_qd(struct dpaa2_io *d, u32 qdid, u8 prio,
 				u16 qdbin, const struct dpaa2_fd *fd);
 int dpaa2_io_service_release(struct dpaa2_io *d, u16 bpid,