Many new laptops now come with 2 gpus, one to be used for low power
modes and one for gaming/on-ac applications. These GPUs are typically
wired to the laptop panel and VGA ports via a multiplexer unit which
is controlled via ACPI methods.
4 combinations of systems typically exist - with 2 ACPI methods.
Intel/ATI - Lenovo W500/T500 - use ATPX ACPI method
ATI/ATI - some ASUS - use ATPX ACPI Method
Intel/Nvidia - - use _DSM ACPI method
Nvidia/Nvidia - - use _DSM ACPI method.
TODO:
This patch adds support for the ATPX method and initial bits
for the _DSM methods that need to written by someone with
access to the hardware.
Add a proper non-debugfs interface - need to get some proper
testing first.
v2: add power up/down support for both devices
on W500 puts i915/radeon into D3 and cuts power to radeon.
v3: redo probing methods, no DMI list, drm devices call to
register with switcheroo, it tries to find an ATPX method on
any device and once there is two devices + ATPX it inits the
switcher.
v4: ATPX msg handling using buffers - should work on more machines
v5: rearchitect after more mjg59 discussion - move ATPX handling to
radeon driver.
v6: add file headers + initial nouveau bits (to be filled out).
v7: merge delayed switcher code.
v8: avoid suspend/resume of gpu that is off
v9: rearchitect - mjg59 is always right. - move all ATPX code to
radeon, should allow simpler DSM also proper ATRM handling
v10: add ATRM support for radeon BIOS, add mutex to lock vgasr_priv
v11: fix bug in resuming Intel for 2nd time.
v12: start fixing up nvidia code blindly.
v13: blindly guess at finishing nvidia code
v14: remove radeon audio hacks - fix up intel resume more like upstream
v15: clean up printks + remove unnecessary igd/dis pointers
mount debugfs
/sys/kernel/debug/vgaswitcheroo/switch - should exist if ATPX detected
+ 2 cards.
DIS - immediate change to discrete
IGD - immediate change to IGD
DDIS - delayed change to discrete
DIGD - delayed change to IGD
ON - turn on not in use
OFF - turn off not in use
Tested on W500 (Intel/ATI) and T500 (Intel/ATI)
Signed-off-by: Dave Airlie <airlied@redhat.com>
* nouveau/for-airlied: (25 commits)
drm/nouveau: use ALIGN instead of open coding it
drm/nouveau: report unknown connector state if lid closed
drm/nouveau: support version 0x20 displayport tables
drm/nouveau: Fix noaccel/nofbaccel option descriptions.
drm/nv50: Implement ctxprog/state generation.
drm/nouveau: use dcb connector types throughout the driver
drm/nv50: enable hpd on any connector we know the gpio line for
drm/nouveau: use dcb connector table for creating drm connectors
drm/nouveau: construct a connector table for cards that lack a real one
drm/nouveau: check for known dcb connector types
drm/nouveau: parse dcb gpio/connector tables after encoders
drm/nouveau: reorganise bios header, add dcb connector type enums
drm/nouveau: merge nvbios and nouveau_bios_info
drm/nouveau: merge parsed_dcb and bios_parsed_dcb into dcb_table
drm/nouveau: rename parsed_dcb_gpio to dcb_gpio_table
drm/nouveau: allow retrieval of vbios image from debugfs
drm/nouveau: fix missing spin_unlock in failure path
drm/nouveau: fix i2ctable bounds checking
drm/nouveau: fix nouveau_i2c_find bounds checking
drm/nouveau: fix pramdac_table range checking
...
Conflicts:
drivers/gpu/drm/nouveau/nouveau_gem.c
This is in preference to disconnected. If there's no other outputs
connected this will cause LVDS to be programmed even with the lid
closed rather than having X fail to start because of no available
outputs.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Not entirely identical to 0x21, the per-encoder table header lacks the
third init table pointer. However, our current parsing of the table
should work just fine.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This removes dependence on external firmware for NV50 generation cards.
If the generated ctxprogs don't work for you for some reason, please
report it.
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This makes this code common to both the nv04 and nv50 paths.
For the moment, we keep the previous behaviour with HDMI/eDP connectors
and report them as DVI-D/DP instead. This will be fixed once the rest
of the code has been fixed to deal with those types.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Found by sparse.
Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
i2c_entries seems to be the number of i2c entries,
so with index equal to this number, we could read
invalid data from i2ctable. Fix it.
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
get_tmds_index_reg reads some value from stack when mlv happens
to be equal to size of pramdac_table array. Fix it.
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit breaks the userspace interface, and requires a new libdrm for
nouveau to operate again.
The multiple GEM_PUSHBUF ioctls that were present in 0.0.15 for
compatibility purposes are now gone, and replaced with the new ioctl which
allows for multiple push buffers to be submitted (necessary for hw index
buffers in the nv50 3d driver) and relocations to be applied on any buffer.
A number of other ioctls (CARD_INIT, GEM_PIN, GEM_UNPIN) that were needed
for userspace modesetting have also been removed.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
This allows us to submit push buffers from any memtype to the hardware.
We'll need this ability for VRAM index buffers at some point.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
PFIFO on G80 and up has a new mode where the main ring buffer is simply a
ring of pointers to indirect buffers containing the actual command/data
packets. In order to be able to implement index buffers in the 3D driver
we need to be able to submit data-only push buffers right after the cmd
packet header, which is only possible using the new command submission
method.
This commit doesn't make it possible to implement index buffers yet, some
userspace interface changes will be required, but it does allow for
testing/debugging of the hardware-side support in the meantime.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
The nv50 pgraph handler (for example) could reenable pgraph fifo access
and that would be bad when pgraph context is being unloaded (we need the
guarantee a ctxprog isn't running).
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This also modifies the unused PRAMIN PT entries to be all zeroes, can't
really recall why I used 9/0 initially, just that it didn't work for
some reason. It was likely masking a bug elsewhere that's since been
fixed.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit changes nouveau to construct PTEs which look very much like
the ones the binary driver creates.
I presume that filling multiple PTEs identically with length flags and
the physical address of the start of a block of VRAM is a hint to the
memory controller that it need not perform additional page table lookups
for that range of addresses.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Mostly obvious simplifications.
The i915 pread/pwrite ioctls, intel_overlay_put_image and
nouveau_gem_new were incorrectly using the locked versions
without locking: this is also fixed in this patch.
Signed-off-by: Luca Barbieri <luca@luca-barbieri.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Unset the bit that indicates that a ctxprog can continue at the end.
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
ramfc is zero'ed upon destruction, so it's safer to do things in the right
order.
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
- We need to disable pgraph fifo access before checking the current channel,
otherwise we could still hit a running ctxprog.
- The writes to 0x400500 are already handled by pgraph->fifo_access and are
therefore redundant, moreover pgraph fifo access should not be reenabled
before current context is set as invalid. So remove them altogether.
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
- In the current situation the padding that is added is dangerous to write
to, userspace could potentially overwrite parts of another bo.
- Depth and stencil buffers are supposed to be large enough in general so
the waste of memory should be acceptable.
- Alternatives are hiding the padding from users or splitting vram into 2
zones.
Signed-off-by: Maarten Maathuis <madman2003@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Fixes DVI+VGA on my 9400, and likely a lot of other configurations that
got broken by the previos DVI-over-DP fix.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
With DVI and DP plugged, the DVI clock change interrupts being run can
cause DP link training to fail. This adds a spinlock around init table
parsing to prevent this.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
It appears we aren't required to do memory sizing ourselves on nv40
either. NV40 init tables read a strap from PEXTDEV_BOOT_0 into a
CRTC register, and then later use that value to select a memory
configuration (written to PFB_CFG0, just like INIT_COMPUTE_MEM on
earlier cards) with INIT_IO_RESTRICT_PROG.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
We used single shared fbops struct and patched it at fb init time with
pointers to the right variant. On mixed multicard, this meant that
it was either sending NV50-style commands to all cards, or NV04-style
commands to all cards.
Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
