diff options
author | Jeremy Kerr <jk@ozlabs.org> | 2006-05-18 18:06:37 +1000 |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2006-05-19 15:02:23 +1000 |
commit | 4c76e0bcdeac27b45d55955f073a97ff8452a42f (patch) | |
tree | 9a274ffdfb1159012c10b7367e8d09207fbd28d0 /arch/powerpc/kernel/vio.c | |
parent | d4ad66faecc4dd9f3db14e0b013741a6f867b089 (diff) |
[PATCH] powerpc: pseries: Use generic dma-window parsing function
Change the pseries iommu init code to use the new of_parse_dma_window()
to parse the ibm,dma-window and ibm,my-dma-window properties of pci and
virtual device nodes.
Also, clean up vio_build_iommu_table() a little.
Tested on pseries, with both vio and pci devices.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/vio.c')
-rw-r--r-- | arch/powerpc/kernel/vio.c | 36 |
1 files changed, 14 insertions, 22 deletions
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index ac5c7bf907f5..2cda65b8171b 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -77,36 +77,28 @@ static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev) } else #endif { - unsigned int *dma_window; - struct iommu_table *newTceTable; - unsigned long offset; - int dma_window_property_size; - - dma_window = (unsigned int *)get_property( - dev->dev.platform_data, "ibm,my-dma-window", - &dma_window_property_size); + unsigned char *dma_window; + struct iommu_table *tbl; + unsigned long offset, size; + + dma_window = get_property(dev->dev.platform_data, + "ibm,my-dma-window", NULL); if (!dma_window) return NULL; - newTceTable = kmalloc(sizeof(struct iommu_table), GFP_KERNEL); + tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); - /* - * There should be some code to extract the phys-encoded - * offset using prom_n_addr_cells(). However, according to - * a comment on earlier versions, it's always zero, so we - * don't bother - */ - offset = dma_window[1] >> PAGE_SHIFT; + of_parse_dma_window(dev->dev.platform_data, dma_window, + &tbl->it_index, &offset, &size); /* TCE table size - measured in tce entries */ - newTceTable->it_size = dma_window[4] >> PAGE_SHIFT; + tbl->it_size = size >> PAGE_SHIFT; /* offset for VIO should always be 0 */ - newTceTable->it_offset = offset; - newTceTable->it_busno = 0; - newTceTable->it_index = (unsigned long)dma_window[0]; - newTceTable->it_type = TCE_VB; + tbl->it_offset = offset >> PAGE_SHIFT; + tbl->it_busno = 0; + tbl->it_type = TCE_VB; - return iommu_init_table(newTceTable); + return iommu_init_table(tbl); } } |