[IA64] agp/hp-agp: Allow binding user memory to the AGP GART

dmesg reports:
[   29.365973] [TTM] AGP Bind memory failed.
[   29.366015] radeon 0000:80:00.0: object_init failed for (4096, 0x00000002)
[   29.366052] radeon 0000:80:00.0: (-22) create WB bo failed
[   29.366087] radeon 0000:80:00.0: Disabling GPU acceleration
[   29.366124] [drm] radeon: cp finalized
[   29.366168] [drm] radeon: cp finalized
[   29.366210] [TTM] Finalizing pool allocator.
[   29.366924] [TTM] Zone  kernel: Used memory at exit: 0 kiB.
[   29.366961] [TTM] Zone   dma32: Used memory at exit: 0 kiB.
[   29.366996] [drm] radeon: ttm finalized
[   29.367030] [drm] Forcing AGP to PCI mode

This patch allows binding user memory to the AGP GART on zx1-based
systems. dmesg thus no more complains about AGP bind memory failure,
disabled GPU acceleration or AGP mode forced to PCI.

Original work from Francisco Jerez in agp/amd-k7
(https://lkml.org/lkml/2010/10/15/469).

Tested-by: Émeric Maschino <emeric.maschino@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c
index 056b289..3695773 100644 (file)
--- a/drivers/char/agp/hp-agp.c
+++ b/drivers/char/agp/hp-agp.c
@@ -336,7 +336,8 @@ hp_zx1_insert_memory (struct agp_memory *mem, off_t pg_start, int type)
        off_t j, io_pg_start;
        int io_pg_count;
 
-       if (type != 0 || mem->type != 0) {
+       if (type != mem->type ||
+               agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type)) {
                return -EINVAL;
        }
 
@@ -380,7 +381,8 @@ hp_zx1_remove_memory (struct agp_memory *mem, off_t pg_start, int type)
        struct _hp_private *hp = &hp_private;
        int i, io_pg_start, io_pg_count;
 
-       if (type != 0 || mem->type != 0) {
+       if (type != mem->type ||
+               agp_bridge->driver->agp_type_to_mask_type(agp_bridge, type)) {
                return -EINVAL;
        }