mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
d69864158e
This modifies SPARC32 to use struct dma_map ops. It means that we can
remove dma-mapping_{32|64}.h.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
179 lines
4.5 KiB
C
179 lines
4.5 KiB
C
/* dma.c: PCI and SBUS DMA accessors for 32-bit sparc.
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*
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* Copyright (C) 2008 David S. Miller <davem@davemloft.net>
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/dma-mapping.h>
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#include <linux/scatterlist.h>
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#include <linux/mm.h>
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#ifdef CONFIG_PCI
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#include <linux/pci.h>
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#endif
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#include "dma.h"
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int dma_supported(struct device *dev, u64 mask)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type)
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return pci_dma_supported(to_pci_dev(dev), mask);
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#endif
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return 0;
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}
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EXPORT_SYMBOL(dma_supported);
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int dma_set_mask(struct device *dev, u64 dma_mask)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type)
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return pci_set_dma_mask(to_pci_dev(dev), dma_mask);
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#endif
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return -EOPNOTSUPP;
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}
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EXPORT_SYMBOL(dma_set_mask);
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static void *dma32_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t flag)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type)
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return pci_alloc_consistent(to_pci_dev(dev), size, dma_handle);
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#endif
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return sbus_alloc_consistent(dev, size, dma_handle);
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}
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static void dma32_free_coherent(struct device *dev, size_t size,
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void *cpu_addr, dma_addr_t dma_handle)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type) {
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pci_free_consistent(to_pci_dev(dev), size,
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cpu_addr, dma_handle);
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return;
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}
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#endif
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sbus_free_consistent(dev, size, cpu_addr, dma_handle);
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}
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static dma_addr_t dma32_map_page(struct device *dev, struct page *page,
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unsigned long offset, size_t size,
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enum dma_data_direction direction)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type)
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return pci_map_page(to_pci_dev(dev), page, offset,
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size, (int)direction);
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#endif
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return sbus_map_single(dev, page_address(page) + offset,
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size, (int)direction);
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}
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static void dma32_unmap_page(struct device *dev, dma_addr_t dma_address,
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size_t size, enum dma_data_direction direction)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type) {
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pci_unmap_page(to_pci_dev(dev), dma_address,
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size, (int)direction);
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return;
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}
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#endif
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sbus_unmap_single(dev, dma_address, size, (int)direction);
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}
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static int dma32_map_sg(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction direction)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type)
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return pci_map_sg(to_pci_dev(dev), sg, nents, (int)direction);
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#endif
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return sbus_map_sg(dev, sg, nents, direction);
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}
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void dma32_unmap_sg(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction direction)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type) {
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pci_unmap_sg(to_pci_dev(dev), sg, nents, (int)direction);
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return;
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}
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#endif
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sbus_unmap_sg(dev, sg, nents, (int)direction);
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}
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static void dma32_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
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size_t size,
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enum dma_data_direction direction)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type) {
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pci_dma_sync_single_for_cpu(to_pci_dev(dev), dma_handle,
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size, (int)direction);
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return;
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}
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#endif
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sbus_dma_sync_single_for_cpu(dev, dma_handle, size, (int) direction);
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}
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static void dma32_sync_single_for_device(struct device *dev,
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dma_addr_t dma_handle, size_t size,
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enum dma_data_direction direction)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type) {
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pci_dma_sync_single_for_device(to_pci_dev(dev), dma_handle,
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size, (int)direction);
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return;
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}
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#endif
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sbus_dma_sync_single_for_device(dev, dma_handle, size, (int) direction);
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}
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static void dma32_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
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int nelems, enum dma_data_direction direction)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type) {
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pci_dma_sync_sg_for_cpu(to_pci_dev(dev), sg,
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nelems, (int)direction);
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return;
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}
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#endif
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BUG();
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}
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static void dma32_sync_sg_for_device(struct device *dev,
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struct scatterlist *sg, int nelems,
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enum dma_data_direction direction)
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{
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#ifdef CONFIG_PCI
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if (dev->bus == &pci_bus_type) {
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pci_dma_sync_sg_for_device(to_pci_dev(dev), sg,
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nelems, (int)direction);
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return;
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}
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#endif
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BUG();
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}
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static const struct dma_ops dma32_dma_ops = {
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.alloc_coherent = dma32_alloc_coherent,
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.free_coherent = dma32_free_coherent,
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.map_page = dma32_map_page,
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.unmap_page = dma32_unmap_page,
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.map_sg = dma32_map_sg,
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.unmap_sg = dma32_unmap_sg,
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.sync_single_for_cpu = dma32_sync_single_for_cpu,
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.sync_single_for_device = dma32_sync_single_for_device,
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.sync_sg_for_cpu = dma32_sync_sg_for_cpu,
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.sync_sg_for_device = dma32_sync_sg_for_device,
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};
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const struct dma_ops *dma_ops = &dma32_dma_ops;
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EXPORT_SYMBOL(dma_ops);
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