Previously we would check size instead of size * nmemb, and so would
never hit the vmalloc path.  Also add integer overflow check as in kcalloc,
and allocate GFP_ZERO pages instead of memset()ing them.
Signed-off-by: NKristian Høgsberg <krh@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

This code depends on the underlying I2C adapter using the bit-banging algo,
which may not be the case. If specific encoders require this mechanism, they
should build a custom I2C algo that implements this workaround, rather than
having it in the general path.
Signed-off-by: NKeith Packard <keithp@keithp.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

duplicate the mode into fbcon storage, so when we free modes later
we don't just lose this.
Signed-off-by: NDave Airlie <airlied@redhat.com>

vfree() does it's own NULL checking, no need for explicit check before
calling it.
Signed-off-by: NFigo.zhang <figo1802@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Replace the DRM_DEBUG with the DRM_DEBUG_DRIVER to print the debug info
in i915 driver.
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Replace the DRM_DEBUG with DRM_DEBUG_MODE macro to print the info in drm_mode.

airlied:- fixed up to remove a conflicting #define
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Use the DRM_DEBUG_KMS/DEBUG_LOG_KMS to print the debug info for
SDVO device.
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Use the DRM_DEBUG_KMS macro definition to print the debug info for
the LVDS.
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Now all the DRM debug info will be reported if the boot option of
"drm.debug=1" is added. Sometimes it is inconvenient to get the debug
info in KMS mode. We will get too much unrelated info.

This will separate several DRM debug levels and the debug level can be used
to print the different debug info. And the debug level is controlled by the
module parameter of drm.debug

In this patch it is divided into four debug levels;
       	drm_core, drm_driver, drm_kms, drm_mode.

At the same time we can get the different debug info by changing the debug
level. This can be done by adding the module parameter. Of course it can
be changed through the /sys/module/drm/parameters/debug after the system is
booted.

Four debug macro definitions are provided.
	DRM_DEBUG(fmt, args...)
	DRM_DEBUG_DRIVER(prefix, fmt, args...)
	DRM_DEBUG_KMS(prefix, fmt, args...)
	DRM_DEBUG_MODE(prefix, fmt, args...)

When the boot option of "drm.debug=4" is added, it will print the debug info
using DRM_DEBUG_KMS macro definition.
When the boot option of "drm.debug=6" is added, it will print the debug info
using DRM_DEBUG_KMS/DRM_DEBUG_DRIVER.

Sometimes we expect to print the value of an array.
For example: SDVO command,
In such case the following four DRM debug macro definitions are added:
	DRM_LOG(fmt, args...)
	DRM_LOG_DRIVER(fmt, args...)
	DRM_LOG_KMS(fmt, args...)
	DRM_LOG_MODE(fmt, args...)
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

This shouldn't be there and is what broke r600 late in the 2.6.30
release cycle with Ben's patch.
Signed-off-by: NDave Airlie <airlied@redhat.com>

A driver will use the _DRM_DRIVER map flag to indicate that it wants
to be responsible for removing the map itself, bypassing the DRM's
automagic cleanup code.

Since the multi-master changes this has been broken, resulting in some
drivers having their registers unmapped before it's finished with them.
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Calls to kcalloc() for a single element can be simplified to calls to
kzalloc().
Signed-off-by: NRobert P. J. Day <rpjday@crashcourse.ca>
Cc: Dave Airlie <airlied@linux.ie>
Cc: Eric Anholt <eric@anholt.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NPavel Roskin <proski@gnu.org>
Cc: Eric Anholt <eric@anholt.net>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

When this macro isn't called with 'file_priv' this will result in a build
failure.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

With the DRM-driven DPMS code, encoders are considered idle unless a
connector is hooked to them, so mode setting is skipped. This makes load
detection fail as none of the hardware is enabled.
Signed-off-by: NKeith Packard <keithp@keithp.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

To differentiate between encountering an out-of-memory error with running
out of space in the aperture, use ENOSPC for the later.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>

Ensure that the drm_vblank_pre_modeset() is always balanced by
drm_vblank_post_modeset() within intel_crtc_mode_set().
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>

The batch buffer may be shared with another read buffer, so we should not
ignore any previously set domains, but just or in the command domain (and
check that the buffer is not writable).
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>

By sending a broken execbuffer (its length was not suitably aligned) I
triggered an operation upon a freed object. The invalid alignment was
discovered after updating the write_domain on the object but before the
object was placed on the active queue. So during the unwind process
following the error, the now freed object attempts to flush its
non-existent, but outstanding, GPU writes causing this use-after-free.

[drm:i915_dispatch_gem_execbuffer] *ERROR* alignment
[drm:i915_gem_execbuffer] *ERROR* dispatch failed -22
WARNING: at lib/kref.c:43 warn_slowpath_null+0x10/0x15()
Modules linked in:
Pid: 4552, comm: lt-csi-drm Not tainted 2.6.30-rc6 #423
Call Trace:
 [<c0119ef3>] warn_slowpath_fmt+0x57/0x6d
 [<c014de24>] ? get_pageblock_migratetype+0x18/0x1e
 [<c014e8fd>] ? free_hot_page+0xa/0xc
 [<c014e915>] ? __free_pages+0x16/0x1f
 [<c0153ebf>] ? shmem_truncate_range+0x63e/0x656
 [<c015fb2f>] ? slob_page_alloc+0x146/0x1c8
 [<c0119f19>] warn_slowpath_null+0x10/0x15
 [<c01f55f2>] kref_get+0x1b/0x21
 [<c02605db>] i915_gem_object_move_to_active+0x1f/0x56
 [<c0261302>] i915_add_request+0x156/0x19a
 [<c026136e>] i915_gem_object_flush_gpu_write_domain+0x28/0x3f
 [<c0261eca>] i915_gem_object_unbind+0x4a/0x124
 [<c0261fd7>] i915_gem_free_object+0x33/0x9b
 [<c0250d6b>] drm_gem_object_free+0x28/0x4a
 [<c0250d43>] ? drm_gem_object_free+0x0/0x4a
 [<c01f55ce>] kref_put+0x38/0x41
 [<c0250cbf>] drm_gem_object_unreference+0x11/0x13
 [<c0250d06>] drm_gem_object_handle_unreference+0x1e/0x21
 [<c0250d13>] drm_gem_object_release_handle+0xa/0xe
 [<c01f3e6b>] idr_for_each+0x5f/0x98
 [<c0250d09>] ? drm_gem_object_release_handle+0x0/0xe
 [<c0250daf>] drm_gem_release+0x22/0x34
 [<c025046f>] drm_release+0x1e8/0x3c4
 [<c0162d25>] __fput+0xaf/0x146
 [<c0162dce>] fput+0x12/0x14
 [<c01605ef>] filp_close+0x48/0x52
 [<c011b182>] put_files_struct+0x57/0x9b
 [<c011b1e4>] exit_files+0x1e/0x20
 [<c011c6b6>] do_exit+0x16d/0x511
 [<c03704ab>] ? __schedule+0x3d4/0x3e5
 [<c0103f0d>] ? handle_irq+0xd/0x69
 [<c011caa7>] do_group_exit+0x4d/0x73
 [<c011cae0>] sys_exit_group+0x13/0x17
 [<c010268c>] sysenter_do_call+0x12/0x2b
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NMichael Cousin <mika.cousin@gmail.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Update interrupt handling methods for IGDNG with new registers
for display and graphics interrupt functions. As we won't use
irq-based vblank sync in dri2, so display interrupt on new chip
will be used for hotplug only in future.
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Using the new PNP resource checking code, this patch allows the i915
driver to allocate MCHBAR space if needed and use the BAR to determine
current memory settings.

[apw@canonical.com: moved to the new generic PNP resource interface]
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NAndy Whitcroft <apw@canonical.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

failure to update-index after git-am --reject to hand-apply
Signed-off-by: NEric Anholt <eric@anholt.net>

Add a PNP resource range check function, indicating whether a resource
has been assigned to any device.
Signed-off-by: NBjorn Helgaas <bjorn.helgaas@hp.com>
[apw@canonical.com: fixed up exports et al]
Signed-off-by: NAndy Whitcroft <apw@canonical.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

The sysrq functions are executed in hardirq context, so we shouldn't be
calling sleeping functions from them, like mutex_locks or memory
allocations.

Fix up the i915 sysrq handler to avoid this.
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

All G4x and newer chips use the new style frame count register, with a
full 32 bit frame count.  Update the code to reflect this.
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

Fix a FIXME in the intel LVDS bring-up code, adding the appropriate
blacklist entry for the AOpen Mini PC, courtesy of a dmidecode
dump from Florian Demmer.
Signed-off-by: NJarod Wilson <jarod@redhat.com>
CC: Florian Demmer <florian@demmer.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

http://bugs.freedesktop.org/show_bug.cgi?id=20429Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
[anholt: Massive cleanup of the slave addr function]
Signed-off-by: NEric Anholt <eric@anholt.net>

The general definition block contains the child device tables, which include
the SDVO device info. For example: device slave address, device dvo port,
device type.

We will get the info of SDVO device by parsing the general definition blocks.
Only when a valid slave address is found, it is regarded as the SDVO device.
And the info of DVO port and slave address is recorded.

http://bugs.freedesktop.org/show_bug.cgi?id=20429Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

This adds the register definitions for the display port enable register
along with those for the GMCH and Link M/N ratios required to drive display
port outputs.
Signed-off-by: NKeith Packard <keithp@keithp.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

We can safely assume that cursor addresses will not extend beyond the
addressable screen dimensions; setting the additional bits is harmless in
any case.
Signed-off-by: NKeith Packard <keithp@keithp.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

We detect TV connect status by setting DAC voltage level override
values as 0.7 voltage for DAC_A/B/C. The corresponding 2-bits shold be 0x2,
In order correctly to set last bit as 0, at first we must clean it.

It fixed freedesktop.org bug #21204
Signed-off-by: NMa Ling <ling.ma@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

This adds kernel mode setting on IGDNG with VGA output support.
Note that suspend/resume doesn't work yet.
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Swizzle bit detection not working right on it.
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Disable OpRegion support for now until verified on new chipsets.
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>