openwrt/target/linux/layerscape/patches-5.4/701-net-0107-fsl_qbman-Adjust-platform-device-creation-for-QMan-p.patch

From fddd729bd2150e83365528cefb9f1fef581e04c5 Mon Sep 17 00:00:00 2001
From: Vakul Garg <vakul.garg@nxp.com>
Date: Sun, 6 Jan 2019 19:05:37 +0530
Subject: [PATCH] fsl_qbman: Adjust platform device creation for QMan portals

Fix the platform device creation in QMan portals such that
dma mappings are done properly.

Signed-off-by: Vakul Garg <vakul.garg@nxp.com>
Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
---
 drivers/staging/fsl_qbman/qman_high.c | 47 +++++++++++++++++++----------------
 1 file changed, 25 insertions(+), 22 deletions(-)

--- a/drivers/staging/fsl_qbman/qman_high.c
+++ b/drivers/staging/fsl_qbman/qman_high.c
@@ -575,6 +575,7 @@ struct qman_portal *qman_create_portal(
 	char buf[16];
 	int ret;
 	u32 isdr;
+	struct platform_device_info pdev_info;
 
 	if (!portal) {
 		portal = kmalloc(sizeof(*portal), GFP_KERNEL);
@@ -671,27 +672,22 @@ struct qman_portal *qman_create_portal(
 	portal->dqrr_disable_ref = 0;
 	portal->cb_dc_ern = NULL;
 	sprintf(buf, "qportal-%d", config->public_cfg.channel);
-	portal->pdev = platform_device_alloc(buf, -1);
+
+	memset(&pdev_info, 0, sizeof(pdev_info));
+	pdev_info.name = buf;
+	pdev_info.id = PLATFORM_DEVID_NONE;
+	pdev_info.dma_mask = DMA_BIT_MASK(40);
+
+	portal->pdev = platform_device_register_full(&pdev_info);
 	if (!portal->pdev) {
 		pr_err("qman_portal - platform_device_alloc() failed\n");
-		goto fail_devalloc;
-	}
-#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
-	portal->pdev->dev.coherent_dma_mask = DMA_BIT_MASK(40);
-	portal->pdev->dev.dma_mask = &portal->pdev->dev.coherent_dma_mask;
-#else
-	if (dma_set_mask(&portal->pdev->dev, DMA_BIT_MASK(40))) {
-		pr_err("qman_portal - dma_set_mask() failed\n");
-		goto fail_devadd;
+		goto fail_devregister;
 	}
-#endif
+
+	arch_setup_dma_ops(&portal->pdev->dev, 0, 0, NULL, true);
+
 	portal->pdev->dev.pm_domain = &qman_portal_device_pm_domain;
 	portal->pdev->dev.platform_data = portal;
-	ret = platform_device_add(portal->pdev);
-	if (ret) {
-		pr_err("qman_portal - platform_device_add() failed\n");
-		goto fail_devadd;
-	}
 	dpa_rbtree_init(&portal->retire_table);
 	isdr = 0xffffffff;
 	qm_isr_disable_write(__p, isdr);
@@ -751,10 +747,8 @@ fail_eqcr_empty:
 fail_affinity:
 	free_irq(config->public_cfg.irq, portal);
 fail_irq:
-	platform_device_del(portal->pdev);
-fail_devadd:
-	platform_device_put(portal->pdev);
-fail_devalloc:
+	platform_device_unregister(portal->pdev);
+fail_devregister:
 	if (num_ceetms)
 		for (ret = 0; ret < num_ceetms; ret++)
 			kfree(portal->ccgrs[ret]);
@@ -852,8 +846,7 @@ void qman_destroy_portal(struct qman_por
 	qm_dqrr_finish(&qm->p);
 	qm_eqcr_finish(&qm->p);
 
-	platform_device_del(qm->pdev);
-	platform_device_put(qm->pdev);
+	platform_device_unregister(qm->pdev);
 
 	qm->config = NULL;
 	if (qm->alloced)
@@ -1809,6 +1802,16 @@ int qman_init_fq(struct qman_fq *fq, u32
 		} else {
 			phys_fq = dma_map_single(&p->pdev->dev, fq, sizeof(*fq),
 						DMA_TO_DEVICE);
+			if (dma_mapping_error(&p->pdev->dev, phys_fq)) {
+				dev_err(&p->pdev->dev,
+					"dma_map_single failed for fqid: %u\n",
+					fq->fqid);
+				FQUNLOCK(fq);
+				PORTAL_IRQ_UNLOCK(p, irqflags);
+				put_affine_portal();
+				return -EIO;
+			}
+
 			qm_fqd_stashing_set64(&mcc->initfq.fqd, phys_fq);
 		}
 	}