> Actually at least the bridge does everthing right until now (IMHO :-). The > bridge is detected and also the aperture size is read out correctly from the > registers. After that, the agp_backend_initialize() function in > drivers/cahr/agp/backend.c calls the create_gatt_table() function of the > driver (articias_create_gatt_table). Based on the detected aperture size and > its definitions, this function allocates pages for the GATT table > (alloc_gatt_pages). The function then tries to map this pages with > ioremap_nocache(virt_to_gatt(table, (PAGE_SIZE * (1 << page_order))). But > ioremap_nocache() cannot remap the pages, because the following code snipped > in __ioremap (arch/ppc/mm/pgtable.c) is trigged:
Yes, you are not allowed to ioremap RAM on ppc at least not with CONFIG_6xx. You should leave it cacheable and use explicit cache flush like the UniNorth driver. > As it can be seen in the following log, the table address (0xde200000 -> > virt_to_gart(table) = 0x1e200000) is lower than the maximum amount of memory > 0x20000000 (512MB) and therefore __ioremap() does not remap the pages. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
