+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2014-2015 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __DMA_IOMMU_H
#define __DMA_IOMMU_H
size_t size, enum dma_data_direction dir, unsigned long attrs);
void iommu_dma_unmap_resource(struct device *dev, dma_addr_t handle,
size_t size, enum dma_data_direction dir, unsigned long attrs);
-int iommu_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);
/* The DMA API isn't _quite_ the whole story, though... */
-void iommu_dma_map_msi_msg(int irq, struct msi_msg *msg);
+/*
+ * iommu_dma_prepare_msi() - Map the MSI page in the IOMMU device
+ *
+ * The MSI page will be stored in @desc.
+ *
+ * Return: 0 on success otherwise an error describing the failure.
+ */
+int iommu_dma_prepare_msi(struct msi_desc *desc, phys_addr_t msi_addr);
+
+/* Update the MSI message if required. */
+void iommu_dma_compose_msi_msg(struct msi_desc *desc,
+ struct msi_msg *msg);
+
void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list);
#else
struct iommu_domain;
+struct msi_desc;
struct msi_msg;
struct device;
{
}
-static inline void iommu_dma_map_msi_msg(int irq, struct msi_msg *msg)
+static inline int iommu_dma_prepare_msi(struct msi_desc *desc,
+ phys_addr_t msi_addr)
+{
+ return 0;
+}
+
+static inline void iommu_dma_compose_msi_msg(struct msi_desc *desc,
+ struct msi_msg *msg)
{
}