[PATCH 01/12] iommu-common: move to arch/sparc

[Anshuman Khandual]

On 04/15/2018 08:29 PM, Christoph Hellwig wrote:
> This code is only used by sparc, and all new iommu drivers should use the
> drivers/iommu/ framework.  Also remove the unused exports.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Right, these functions are used only from SPARC architecture. Simple
git grep confirms it as well. Hence it makes sense to move them into
arch code instead.

git grep iommu_tbl_pool_init
----------------------------

arch/sparc/include/asm/iommu-common.h:extern void iommu_tbl_pool_init(struct iommu_map_table *iommu,
arch/sparc/kernel/iommu-common.c:void iommu_tbl_pool_init(struct iommu_map_table *iommu,
arch/sparc/kernel/iommu.c:      iommu_tbl_pool_init(&iommu->tbl, num_tsb_entries, IO_PAGE_SHIFT,
arch/sparc/kernel/ldc.c:        iommu_tbl_pool_init(iommu, num_tsb_entries, PAGE_SHIFT,
arch/sparc/kernel/pci_sun4v.c:  iommu_tbl_pool_init(&atu->tbl, num_iotte, IO_PAGE_SHIFT,
arch/sparc/kernel/pci_sun4v.c:  iommu_tbl_pool_init(&iommu->tbl, num_tsb_entries, IO_PAGE_SHIFT,

git grep iommu_tbl_range_alloc
------------------------------

arch/sparc/include/asm/iommu-common.h:extern unsigned long iommu_tbl_range_alloc(struct device *dev,
arch/sparc/kernel/iommu-common.c:unsigned long iommu_tbl_range_alloc(struct device *dev,
arch/sparc/kernel/iommu.c:      entry = iommu_tbl_range_alloc(dev, &iommu->tbl, npages, NULL,
arch/sparc/kernel/iommu.c:              entry = iommu_tbl_range_alloc(dev, &iommu->tbl, npages,
arch/sparc/kernel/ldc.c:        entry = iommu_tbl_range_alloc(NULL, &iommu->iommu_map_table,
arch/sparc/kernel/pci_sun4v.c:  entry = iommu_tbl_range_alloc(dev, tbl, npages, NULL,
arch/sparc/kernel/pci_sun4v.c:  entry = iommu_tbl_range_alloc(dev, tbl, npages, NULL,
arch/sparc/kernel/pci_sun4v.c:          entry = iommu_tbl_range_alloc(dev, tbl, npages,

git grep iommu_tbl_range_free
-----------------------------

arch/sparc/include/asm/iommu-common.h:extern void iommu_tbl_range_free(struct iommu_map_table *iommu,
arch/sparc/kernel/iommu-common.c:void iommu_tbl_range_free(struct iommu_map_table *iommu, u64 dma_addr,
arch/sparc/kernel/iommu.c:      iommu_tbl_range_free(&iommu->tbl, dvma, npages, IOMMU_ERROR_CODE);
arch/sparc/kernel/iommu.c:      iommu_tbl_range_free(&iommu->tbl, bus_addr, npages, IOMMU_ERROR_CODE);
arch/sparc/kernel/iommu.c:                      iommu_tbl_range_free(&iommu->tbl, vaddr, npages,
arch/sparc/kernel/iommu.c:              iommu_tbl_range_free(&iommu->tbl, dma_handle, npages,
arch/sparc/kernel/ldc.c:        iommu_tbl_range_free(&iommu->iommu_map_table, cookie, npages, entry);
arch/sparc/kernel/pci_sun4v.c:  iommu_tbl_range_free(tbl, *dma_addrp, npages, IOMMU_ERROR_CODE);
arch/sparc/kernel/pci_sun4v.c:  iommu_tbl_range_free(tbl, dvma, npages, IOMMU_ERROR_CODE);
arch/sparc/kernel/pci_sun4v.c:  iommu_tbl_range_free(tbl, bus_addr, npages, IOMMU_ERROR_CODE);
arch/sparc/kernel/pci_sun4v.c:  iommu_tbl_range_free(tbl, bus_addr, npages, IOMMU_ERROR_CODE);
arch/sparc/kernel/pci_sun4v.c:                  iommu_tbl_range_free(tbl, vaddr, npages,
arch/sparc/kernel/pci_sun4v.c:          iommu_tbl_range_free(tbl, dma_handle, npages,

Reviewed-by: Anshuman Khandual <khandual at linux.vnet.ibm.com>