diff options
author | Jeremy Kerr <jk@ozlabs.org> | 2006-05-18 08:06:37 (GMT) |
---|---|---|
committer | Paul Mackerras <paulus@samba.org> | 2006-05-19 05:02:23 (GMT) |
commit | 4c76e0bcdeac27b45d55955f073a97ff8452a42f (patch) | |
tree | 9a274ffdfb1159012c10b7367e8d09207fbd28d0 /arch/powerpc/platforms/pseries/iommu.c | |
parent | d4ad66faecc4dd9f3db14e0b013741a6f867b089 (diff) | |
download | linux-fsl-qoriq-4c76e0bcdeac27b45d55955f073a97ff8452a42f.tar.xz |
[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/platforms/pseries/iommu.c')
-rw-r--r-- | arch/powerpc/platforms/pseries/iommu.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/arch/powerpc/platforms/pseries/iommu.c b/arch/powerpc/platforms/pseries/iommu.c index ed102f3..44a507e 100644 --- a/arch/powerpc/platforms/pseries/iommu.c +++ b/arch/powerpc/platforms/pseries/iommu.c @@ -281,30 +281,22 @@ static void iommu_table_setparms(struct pci_controller *phb, * iommu_table_setparms_lpar * * Function: On pSeries LPAR systems, return TCE table info, given a pci bus. - * - * ToDo: properly interpret the ibm,dma-window property. The definition is: - * logical-bus-number (1 word) - * phys-address (#address-cells words) - * size (#cell-size words) - * - * Currently we hard code these sizes (more or less). */ static void iommu_table_setparms_lpar(struct pci_controller *phb, struct device_node *dn, struct iommu_table *tbl, - unsigned int *dma_window) + unsigned char *dma_window) { + unsigned long offset, size; + tbl->it_busno = PCI_DN(dn)->bussubno; + of_parse_dma_window(dn, dma_window, &tbl->it_index, &offset, &size); - /* TODO: Parse field size properties properly. */ - tbl->it_size = (((unsigned long)dma_window[4] << 32) | - (unsigned long)dma_window[5]) >> PAGE_SHIFT; - tbl->it_offset = (((unsigned long)dma_window[2] << 32) | - (unsigned long)dma_window[3]) >> PAGE_SHIFT; tbl->it_base = 0; - tbl->it_index = dma_window[0]; tbl->it_blocksize = 16; tbl->it_type = TCE_PCI; + tbl->it_offset = offset >> PAGE_SHIFT; + tbl->it_size = size >> PAGE_SHIFT; } static void iommu_bus_setup_pSeries(struct pci_bus *bus) @@ -396,7 +388,7 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus) struct iommu_table *tbl; struct device_node *dn, *pdn; struct pci_dn *ppci; - unsigned int *dma_window = NULL; + unsigned char *dma_window = NULL; DBG("iommu_bus_setup_pSeriesLP, bus %p, bus->self %p\n", bus, bus->self); @@ -404,7 +396,7 @@ static void iommu_bus_setup_pSeriesLP(struct pci_bus *bus) /* Find nearest ibm,dma-window, walking up the device tree */ for (pdn = dn; pdn != NULL; pdn = pdn->parent) { - dma_window = (unsigned int *)get_property(pdn, "ibm,dma-window", NULL); + dma_window = get_property(pdn, "ibm,dma-window", NULL); if (dma_window != NULL) break; } @@ -498,7 +490,7 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev) { struct device_node *pdn, *dn; struct iommu_table *tbl; - int *dma_window = NULL; + unsigned char *dma_window = NULL; struct pci_dn *pci; DBG("iommu_dev_setup_pSeriesLP, dev %p (%s)\n", dev, pci_name(dev)); @@ -513,8 +505,7 @@ static void iommu_dev_setup_pSeriesLP(struct pci_dev *dev) for (pdn = dn; pdn && PCI_DN(pdn) && !PCI_DN(pdn)->iommu_table; pdn = pdn->parent) { - dma_window = (unsigned int *) - get_property(pdn, "ibm,dma-window", NULL); + dma_window = get_property(pdn, "ibm,dma-window", NULL); if (dma_window) break; } |