diff options
Diffstat (limited to 'arch/powerpc/platforms/iseries/iommu.c')
| -rw-r--r-- | arch/powerpc/platforms/iseries/iommu.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c index 3b6a9666c2c0..49e9c664ea89 100644 --- a/arch/powerpc/platforms/iseries/iommu.c +++ b/arch/powerpc/platforms/iseries/iommu.c @@ -28,14 +28,17 @@ #include <linux/dma-mapping.h> #include <linux/list.h> #include <linux/pci.h> +#include <linux/module.h> #include <asm/iommu.h> +#include <asm/vio.h> #include <asm/tce.h> #include <asm/machdep.h> #include <asm/abs_addr.h> #include <asm/prom.h> #include <asm/pci-bridge.h> #include <asm/iseries/hv_call_xm.h> +#include <asm/iseries/hv_call_event.h> #include <asm/iseries/iommu.h> static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages, @@ -189,6 +192,55 @@ void iommu_devnode_init_iSeries(struct pci_dev *pdev, struct device_node *dn) } #endif +static struct iommu_table veth_iommu_table; +static struct iommu_table vio_iommu_table; + +void *iseries_hv_alloc(size_t size, dma_addr_t *dma_handle, gfp_t flag) +{ + return iommu_alloc_coherent(&vio_iommu_table, size, dma_handle, + DMA_32BIT_MASK, flag, -1); +} +EXPORT_SYMBOL_GPL(iseries_hv_alloc); + +void iseries_hv_free(size_t size, void *vaddr, dma_addr_t dma_handle) +{ + iommu_free_coherent(&vio_iommu_table, size, vaddr, dma_handle); +} +EXPORT_SYMBOL_GPL(iseries_hv_free); + +dma_addr_t iseries_hv_map(void *vaddr, size_t size, + enum dma_data_direction direction) +{ + return iommu_map_single(&vio_iommu_table, vaddr, size, + DMA_32BIT_MASK, direction); +} + +void iseries_hv_unmap(dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) +{ + iommu_unmap_single(&vio_iommu_table, dma_handle, size, direction); +} + +void __init iommu_vio_init(void) +{ + iommu_table_getparms_iSeries(255, 0, 0xff, &veth_iommu_table); + veth_iommu_table.it_size /= 2; + vio_iommu_table = veth_iommu_table; + vio_iommu_table.it_offset += veth_iommu_table.it_size; + + if (!iommu_init_table(&veth_iommu_table, -1)) + printk("Virtual Bus VETH TCE table failed.\n"); + if (!iommu_init_table(&vio_iommu_table, -1)) + printk("Virtual Bus VIO TCE table failed.\n"); +} + +struct iommu_table *vio_build_iommu_table_iseries(struct vio_dev *dev) +{ + if (strcmp(dev->type, "network") == 0) + return &veth_iommu_table; + return &vio_iommu_table; +} + void iommu_init_early_iSeries(void) { ppc_md.tce_build = tce_build_iSeries; |