1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Intel MIC Platform Software Stack (MPSS)
5 * Copyright(c) 2014 Intel Corporation.
12 #include "../bus/scif_bus.h"
14 static __always_inline void *
15 scif_alloc_coherent(dma_addr_t *dma_handle,
16 struct scif_dev *scifdev, size_t size,
21 if (scifdev_self(scifdev)) {
22 va = kmalloc(size, gfp);
24 *dma_handle = virt_to_phys(va);
26 va = dma_alloc_coherent(&scifdev->sdev->dev,
27 size, dma_handle, gfp);
28 if (va && scifdev_is_p2p(scifdev))
29 *dma_handle = *dma_handle + scifdev->base_addr;
34 static __always_inline void
35 scif_free_coherent(void *va, dma_addr_t local,
36 struct scif_dev *scifdev, size_t size)
38 if (scifdev_self(scifdev)) {
41 if (scifdev_is_p2p(scifdev) && local > scifdev->base_addr)
42 local = local - scifdev->base_addr;
43 dma_free_coherent(&scifdev->sdev->dev,
48 static __always_inline int
49 scif_map_single(dma_addr_t *dma_handle,
50 void *local, struct scif_dev *scifdev, size_t size)
54 if (scifdev_self(scifdev)) {
55 *dma_handle = virt_to_phys((local));
57 *dma_handle = dma_map_single(&scifdev->sdev->dev,
58 local, size, DMA_BIDIRECTIONAL);
59 if (dma_mapping_error(&scifdev->sdev->dev, *dma_handle))
61 else if (scifdev_is_p2p(scifdev))
62 *dma_handle = *dma_handle + scifdev->base_addr;
69 static __always_inline void
70 scif_unmap_single(dma_addr_t local, struct scif_dev *scifdev,
73 if (!scifdev_self(scifdev)) {
74 if (scifdev_is_p2p(scifdev))
75 local = local - scifdev->base_addr;
76 dma_unmap_single(&scifdev->sdev->dev, local,
77 size, DMA_BIDIRECTIONAL);
81 static __always_inline void *
82 scif_ioremap(dma_addr_t phys, size_t size, struct scif_dev *scifdev)
85 struct scif_hw_dev *sdev = scifdev->sdev;
87 if (scifdev_self(scifdev))
88 out_virt = phys_to_virt(phys);
90 out_virt = (void __force *)
91 sdev->hw_ops->remap(sdev, phys, size);
95 static __always_inline void
96 scif_iounmap(void *virt, size_t len, struct scif_dev *scifdev)
98 if (!scifdev_self(scifdev)) {
99 struct scif_hw_dev *sdev = scifdev->sdev;
101 sdev->hw_ops->unmap(sdev, (void __force __iomem *)virt);
105 static __always_inline int
106 scif_map_page(dma_addr_t *dma_handle, struct page *page,
107 struct scif_dev *scifdev)
111 if (scifdev_self(scifdev)) {
112 *dma_handle = page_to_phys(page);
114 struct scif_hw_dev *sdev = scifdev->sdev;
115 *dma_handle = dma_map_page(&sdev->dev,
116 page, 0x0, PAGE_SIZE,
118 if (dma_mapping_error(&sdev->dev, *dma_handle))
120 else if (scifdev_is_p2p(scifdev))
121 *dma_handle = *dma_handle + scifdev->base_addr;
127 #endif /* SCIF_MAP_H */