From 1670b2b2716b98541765da94be1332ad5c314b7a Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Thu, 11 Oct 2007 14:53:32 +1000 Subject: [POWERPC] Remove iSeries_vio_dev It was only being used to carry around dma_iommu_ops and vio_iommu_table which we can use directly instead. This also means that vio_bus_device doesn't need to refer to them either. Signed-off-by: Stephen Rothwell Acked-by: Jens Axboe Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/vio.c | 7 +------ arch/powerpc/platforms/iseries/iommu.c | 30 ++++++++++++++++++++++++++++++ arch/powerpc/platforms/iseries/mf.c | 23 +++++++++-------------- arch/powerpc/platforms/iseries/viopath.c | 6 ++---- 4 files changed, 42 insertions(+), 24 deletions(-) (limited to 'arch') diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index fd631d4..eaf7f69 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -49,11 +49,8 @@ static struct vio_dev vio_bus_device = { /* fake "parent" device */ }; #ifdef CONFIG_PPC_ISERIES -struct device *iSeries_vio_dev = &vio_bus_device.dev; -EXPORT_SYMBOL(iSeries_vio_dev); - static struct iommu_table veth_iommu_table; -static struct iommu_table vio_iommu_table; +struct iommu_table vio_iommu_table; static void __init iommu_vio_init(void) { @@ -66,8 +63,6 @@ static void __init iommu_vio_init(void) printk("Virtual Bus VETH TCE table failed.\n"); if (!iommu_init_table(&vio_iommu_table, -1)) printk("Virtual Bus VIO TCE table failed.\n"); - vio_bus_device.dev.archdata.dma_ops = &dma_iommu_ops; - vio_bus_device.dev.archdata.dma_data = &vio_iommu_table; } #else static void __init iommu_vio_init(void) diff --git a/arch/powerpc/platforms/iseries/iommu.c b/arch/powerpc/platforms/iseries/iommu.c index 3b6a966..3281f10 100644 --- a/arch/powerpc/platforms/iseries/iommu.c +++ b/arch/powerpc/platforms/iseries/iommu.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include @@ -36,6 +37,7 @@ #include #include #include +#include #include static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages, @@ -189,6 +191,34 @@ void iommu_devnode_init_iSeries(struct pci_dev *pdev, struct device_node *dn) } #endif +extern 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 iommu_init_early_iSeries(void) { ppc_md.tce_build = tce_build_iSeries; diff --git a/arch/powerpc/platforms/iseries/mf.c b/arch/powerpc/platforms/iseries/mf.c index b1187d9..c0f2433 100644 --- a/arch/powerpc/platforms/iseries/mf.c +++ b/arch/powerpc/platforms/iseries/mf.c @@ -39,9 +39,9 @@ #include #include #include -#include #include #include +#include #include #include "setup.h" @@ -870,8 +870,7 @@ static int proc_mf_dump_cmdline(char *page, char **start, off_t off, if ((off + count) > 256) count = 256 - off; - dma_addr = dma_map_single(iSeries_vio_dev, page, off + count, - DMA_FROM_DEVICE); + dma_addr = iseries_hv_map(page, off + count, DMA_FROM_DEVICE); if (dma_mapping_error(dma_addr)) return -ENOMEM; memset(page, 0, off + count); @@ -883,8 +882,7 @@ static int proc_mf_dump_cmdline(char *page, char **start, off_t off, vsp_cmd.sub_data.kern.length = off + count; mb(); rc = signal_vsp_instruction(&vsp_cmd); - dma_unmap_single(iSeries_vio_dev, dma_addr, off + count, - DMA_FROM_DEVICE); + iseries_hv_unmap(dma_addr, off + count, DMA_FROM_DEVICE); if (rc) return rc; if (vsp_cmd.result_code != 0) @@ -919,8 +917,7 @@ static int mf_getVmlinuxChunk(char *buffer, int *size, int offset, u64 side) int len = *size; dma_addr_t dma_addr; - dma_addr = dma_map_single(iSeries_vio_dev, buffer, len, - DMA_FROM_DEVICE); + dma_addr = iseries_hv_map(buffer, len, DMA_FROM_DEVICE); memset(buffer, 0, len); memset(&vsp_cmd, 0, sizeof(vsp_cmd)); vsp_cmd.cmd = 32; @@ -938,7 +935,7 @@ static int mf_getVmlinuxChunk(char *buffer, int *size, int offset, u64 side) rc = -ENOMEM; } - dma_unmap_single(iSeries_vio_dev, dma_addr, len, DMA_FROM_DEVICE); + iseries_hv_unmap(dma_addr, len, DMA_FROM_DEVICE); return rc; } @@ -1149,8 +1146,7 @@ static int proc_mf_change_cmdline(struct file *file, const char __user *buffer, goto out; dma_addr = 0; - page = dma_alloc_coherent(iSeries_vio_dev, count, &dma_addr, - GFP_ATOMIC); + page = iseries_hv_alloc(count, &dma_addr, GFP_ATOMIC); ret = -ENOMEM; if (page == NULL) goto out; @@ -1170,7 +1166,7 @@ static int proc_mf_change_cmdline(struct file *file, const char __user *buffer, ret = count; out_free: - dma_free_coherent(iSeries_vio_dev, count, page, dma_addr); + iseries_hv_free(count, page, dma_addr); out: return ret; } @@ -1190,8 +1186,7 @@ static ssize_t proc_mf_change_vmlinux(struct file *file, goto out; dma_addr = 0; - page = dma_alloc_coherent(iSeries_vio_dev, count, &dma_addr, - GFP_ATOMIC); + page = iseries_hv_alloc(count, &dma_addr, GFP_ATOMIC); rc = -ENOMEM; if (page == NULL) { printk(KERN_ERR "mf.c: couldn't allocate memory to set vmlinux chunk\n"); @@ -1219,7 +1214,7 @@ static ssize_t proc_mf_change_vmlinux(struct file *file, *ppos += count; rc = count; out_free: - dma_free_coherent(iSeries_vio_dev, count, page, dma_addr); + iseries_hv_free(count, page, dma_addr); out: return rc; } diff --git a/arch/powerpc/platforms/iseries/viopath.c b/arch/powerpc/platforms/iseries/viopath.c index 45f2fe3..df23331 100644 --- a/arch/powerpc/platforms/iseries/viopath.c +++ b/arch/powerpc/platforms/iseries/viopath.c @@ -124,8 +124,7 @@ static int proc_viopath_show(struct seq_file *m, void *v) if (!buf) return 0; - handle = dma_map_single(iSeries_vio_dev, buf, HW_PAGE_SIZE, - DMA_FROM_DEVICE); + handle = iseries_hv_map(buf, HW_PAGE_SIZE, DMA_FROM_DEVICE); hvrc = HvCallEvent_signalLpEventFast(viopath_hostLp, HvLpEvent_Type_VirtualIo, @@ -146,8 +145,7 @@ static int proc_viopath_show(struct seq_file *m, void *v) buf[HW_PAGE_SIZE-1] = '\0'; seq_printf(m, "%s", buf); - dma_unmap_single(iSeries_vio_dev, handle, HW_PAGE_SIZE, - DMA_FROM_DEVICE); + iseries_hv_unmap(handle, HW_PAGE_SIZE, DMA_FROM_DEVICE); kfree(buf); seq_printf(m, "AVAILABLE_VETH=%x\n", vlanMap); -- cgit v1.1