linux-toradex.git/drivers/gpu/drm/ati_pcigart.c, branch v3.2.68

gpu: Add export.h as required to drivers/gpu files.

2011-10-31T23:32:03+00:00

They need this to get all the EXPORT_SYMBOL variants and THIS_MODULE

Signed-off-by: Paul Gortmaker

drm/radeon: Fix pci_map_page() error checking

2010-08-11T23:38:29+00:00

0 is a valid DMA address from pci_map_page(), use pci_dma_mapping_error()
instead to check for errors

[airlied: fix warning + two other places with errors.]

Signed-off-by: Benjamin Herrenschmidt 
Signed-off-by: Dave Airlie

ati_pcigart: fix printk format warning

2010-02-05T01:46:48+00:00

Fix ati_pcigart printk format warning:

drivers/gpu/drm/ati_pcigart.c:115: warning: format '%Lx' expects type 'long long unsigned int', but argument 3 has type 'dma_addr_t'

Signed-off-by: Randy Dunlap 
Cc: Zhenyu Wang 
Cc: Dave Airlie 
Signed-off-by: Andrew Morton 
Signed-off-by: Dave Airlie

drm: remove address mask param for drm_pci_alloc()

2010-01-07T03:15:50+00:00

drm_pci_alloc() has input of address mask for setting pci dma
mask on the device, which should be properly setup by drm driver.
And leave it as a param for drm_pci_alloc() would cause confusion
or mistake would corrupt the correct dma mask setting, as seen on
intel hw which set wrong dma mask for hw status page. So remove
it from drm_pci_alloc() function.

Signed-off-by: Zhenyu Wang 
Signed-off-by: Dave Airlie

drm/ati_pcigart: use memset_io to reset the memory

2009-03-13T04:24:14+00:00

Also don't setup pci_gart if we aren't going to need it.

Signed-off-by: Dave Airlie

drm: ati_pcigart: Fix limit check in drm_ati_pcigart_init().

2009-03-13T04:24:03+00:00

The variable 'max_pages' is ambiguous.  There are two concepts
of "pages" being used in this function.

First, we have ATI GART pages which are always 4096 bytes.
Then, we have system pages which are of size PAGE_SIZE.

Eliminate the confusion by creating max_ati_pages and
max_real_pages.  Calculate and use them as appropriate.

Signed-off-by: David S. Miller 
Signed-off-by: Dave Airlie

drm: ati_pcigart: Need to use PCI_DMA_BIDIRECTIONAL.

2009-03-13T04:24:00+00:00

The buffers mapped by the PCI GART can be written to by the device,
not just read.

For example, this happens via the RB_RPTR writeback on Radeon.

So we can't use PCI_DMA_TODEVICE else we'll get protection faults
on IOMMU platforms.

Signed-off-by: David S. Miller 
Signed-off-by: Dave Airlie

drm: ati_pcigart: Do not access I/O MEM space using pointer derefs.

2009-03-13T04:23:59+00:00

The PCI GART table initialization code treats the GART table mapping
unconditionally as a kernel virtual address.

But it could be in the framebuffer, for example, and thus we're
dealing with a PCI MEM space ioremap() cookie.  Treating that as a
virtual address is illegal and will crash some system types (such as
sparc64 where the ioremap() return value is actually a physical I/O
address).

So access the area correctly, using gart_info->gart_table_location as
our guide.

Signed-off-by: David S. Miller 
Signed-off-by: Dave Airlie

drm: reorganise drm tree to be more future proof.

2008-07-14T00:45:01+00:00

With the coming of kernel based modesetting and the memory manager stuff,
the everything in one directory approach was getting very ugly and
starting to be unmanageable.

This restructures the drm along the lines of other kernel components.

It creates a drivers/gpu/drm directory and moves the hw drivers into
subdirectores. It moves the includes into an include/drm, and
sets up the unifdef for the userspace headers we should be exporting.

Signed-off-by: Dave Airlie