mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 22:14:51 +07:00
2db4928bb5
To support "hybrid" DMA ops in a subsequent patch, we will need both a direct DMA offset and an iommu pointer. Those are currently exclusive (a union), so change them to be separate fields. While there, also type iommu_table_base properly and make exist only on CONFIG_PPC64 since it's not referenced on 32-bit at all. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
/*
|
|
* Arch specific extensions to struct device
|
|
*
|
|
* This file is released under the GPLv2
|
|
*/
|
|
#ifndef _ASM_POWERPC_DEVICE_H
|
|
#define _ASM_POWERPC_DEVICE_H
|
|
|
|
struct dma_map_ops;
|
|
struct device_node;
|
|
#ifdef CONFIG_PPC64
|
|
struct pci_dn;
|
|
struct iommu_table;
|
|
#endif
|
|
|
|
/*
|
|
* Arch extensions to struct device.
|
|
*
|
|
* When adding fields, consider macio_add_one_device in
|
|
* drivers/macintosh/macio_asic.c
|
|
*/
|
|
struct dev_archdata {
|
|
/* DMA operations on that device */
|
|
struct dma_map_ops *dma_ops;
|
|
|
|
/*
|
|
* These two used to be a union. However, with the hybrid ops we need
|
|
* both so here we store both a DMA offset for direct mappings and
|
|
* an iommu_table for remapped DMA.
|
|
*/
|
|
dma_addr_t dma_offset;
|
|
|
|
#ifdef CONFIG_PPC64
|
|
struct iommu_table *iommu_table_base;
|
|
#endif
|
|
|
|
#ifdef CONFIG_IOMMU_API
|
|
void *iommu_domain;
|
|
#endif
|
|
#ifdef CONFIG_SWIOTLB
|
|
dma_addr_t max_direct_dma_addr;
|
|
#endif
|
|
#ifdef CONFIG_PPC64
|
|
struct pci_dn *pci_data;
|
|
#endif
|
|
#ifdef CONFIG_EEH
|
|
struct eeh_dev *edev;
|
|
#endif
|
|
#ifdef CONFIG_FAIL_IOMMU
|
|
int fail_iommu;
|
|
#endif
|
|
#ifdef CONFIG_CXL_BASE
|
|
struct cxl_context *cxl_ctx;
|
|
#endif
|
|
};
|
|
|
|
struct pdev_archdata {
|
|
u64 dma_mask;
|
|
};
|
|
|
|
#define ARCH_HAS_DMA_GET_REQUIRED_MASK
|
|
|
|
#endif /* _ASM_POWERPC_DEVICE_H */
|