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Aaron Plattner 89177644a7 drm: add prime helpers 
Instead of reimplementing all of the dma_buf functionality in every driver,
create helpers drm_prime_import and drm_prime_export that implement them in
terms of new, lower-level hook functions:

  gem_prime_pin: callback when a buffer is created, used to pin buffers into GTT
  gem_prime_get_sg_table: convert a drm_gem_object to an sg_table for export
  gem_prime_import_sg_table: convert an sg_table into a drm_gem_object
  gem_prime_vmap, gem_prime_vunmap: map and unmap an object

These hooks are optional; drivers can opt in by using drm_gem_prime_import and
drm_gem_prime_export as the .gem_prime_import and .gem_prime_export fields of
struct drm_driver.

v2:
- Drop .begin_cpu_access.  None of the drivers this code replaces implemented
  it.  Having it here was a leftover from when I was trying to include i915 in
  this rework.
- Use mutex_lock instead of mutex_lock_interruptible, as these three drivers
  did.  This patch series shouldn't change that behavior.
- Rename helpers to gem_prime_get_sg_table and gem_prime_import_sg_table.
  Rename struct sg_table* variables to 'sgt' for clarity.
- Update drm.tmpl for these new hooks.

v3:
- Pass the vaddr down to the driver.  This lets drivers that just call vunmap on
  the pointer avoid having to store the pointer in their GEM private structures.
- Move documentation into a /** DOC */ comment in drm_prime.c and include it in
  drm.tmpl with a !P line.  I tried to use !F lines to include documentation of
  the individual functions from drmP.h, but the docproc / kernel-doc scripts
  barf on that file, so hopefully this is good enough for now.
- apply refcount fix from commit be8a42ae60
  ("drm/prime: drop reference on imported dma-buf come from gem")

Signed-off-by: Aaron Plattner <aplattner@nvidia.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2013-02-08 13:39:08 +10:00
..
ABI Merge branch 'akpm' (Andrew's patch-bomb) 2012-12-20 20:00:43 -08:00
accounting doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c 2012-11-26 14:22:21 +01:00
acpi Documentation: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
aoe aoe: allow user to disable target failure timeout 2012-12-17 17:15:25 -08:00
arm fbdev changes for 3.8: 2012-12-15 13:03:48 -08:00
arm64 Documentation: Fixes a word in Documentation/arm64/memory.txt 2012-11-29 16:33:18 +00:00
auxdisplay
backlight drivers/video/backlight/lp855x_bl.c: use generic PWM functions 2012-12-17 17:15:16 -08:00
blackfin
block block: Kill bi_destructor 2012-09-09 10:35:39 +02:00
blockdev
bus-devices ARM: OMAP2+: gpmc: generic timing calculation 2012-11-09 18:07:11 +05:30
cdrom
cgroups kmem: add slab-specific documentation about the kmem controller 2012-12-18 15:02:15 -08:00
connector connector: Move cn_test.c away from NLMSG_PUT(). 2012-06-26 21:19:02 -07:00
console
cpu-freq acpi-cpufreq: Add support for disabling dynamic overclocking 2012-09-09 22:05:12 +02:00
cpuidle Honor state disabling in the cpuidle ladder governor 2012-09-04 01:35:44 +02:00
cris
crypto KEYS: Document asymmetric key type 2012-10-08 13:50:12 +10:30
development-process
device-mapper DM-RAID: Fix RAID10's check for sufficient redundancy 2013-01-24 12:02:36 +11:00
devicetree Merge tag 'of_videomode_helper' of git://git.pengutronix.de/git/str/linux into drm-next 2013-02-08 12:34:44 +10:00
DocBook drm: add prime helpers 2013-02-08 13:39:08 +10:00
driver-model pwm: add devm_pwm_get() and devm_pwm_put() 2012-09-10 17:05:45 +02:00
dvb get_dvb_firmware: fix download site for tda10046 firmware 2012-09-28 16:16:00 -03:00
early-userspace
EDID drm: Load EDID: Explain better how to write your own EDID firmware 2013-01-20 19:22:19 +10:00
extcon
fault-injection doc: fix quite a few typos within Documentation 2012-11-19 14:28:24 +01:00
fb
filesystems f2fs: update f2fs document to reflect SIT/NAT layout correctly 2013-01-04 09:42:59 +09:00
firmware_class firmware loader: document firmware cache mechanism 2012-11-14 15:07:18 -08:00
frv
hid HID: remove x bit from sensor doc 2012-12-14 08:48:59 +01:00
hwmon hwmon: (it87) Report thermal sensor type as Intel PECI if appropriate 2012-12-19 22:17:02 +01:00
i2c Documentation: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
i2o
ia64 doc: aliasing-test: close fd on write error 2012-09-01 09:57:10 -07:00
ide
infiniband IB/ipoib: Add rtnl_link_ops support 2012-09-20 16:49:17 -04:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2012-12-13 12:00:48 -08:00
ioctl ioctl-number.txt: Remove legacy private ioctl's from media drivers 2012-08-14 00:07:39 -03:00
isdn
ja_JP
kbuild Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-12-13 12:00:02 -08:00
kdump kexec: update URL of kexec homepage 2012-07-18 18:35:57 -07:00
ko_KR
laptops Documentation: fix the VM knobs descritpion WRT pdflush 2012-08-04 12:15:09 +04:00
leds leds-lp5523: add channel name in the platform data 2012-09-11 18:32:41 +08:00
m68k
make
memory-devices
mips
misc-devices doc: fix quite a few typos within Documentation 2012-11-19 14:28:24 +01:00
mmc mmc: core: Extend sysfs to ext_csd parameters for RPMB support 2012-12-06 13:54:48 -05:00
mn10300
mtd
namespaces
netlabel
networking ip-sysctl: fix spelling errors 2013-01-04 15:12:34 -08:00
nfc NFC: Error management documentation 2012-07-09 16:42:11 -04:00
parisc
PCI Documentation: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
pcmcia
power PM: Move disabling/enabling runtime PM to late suspend/early resume 2013-01-06 00:35:55 +01:00
powerpc powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags 2012-11-15 13:00:23 +11:00
pps
prctl seccomp: Make syscall skipping and nr changes more consistent 2012-10-02 21:14:29 +10:00
pti
ptp
rapidio
RCU Merge branches 'urgent.2012.10.27a', 'doc.2012.11.16a', 'fixes.2012.11.13a', 'srcu.2012.10.27a', 'stall.2012.11.13a', 'tracing.2012.11.08a' and 'idle.2012.10.24a' into HEAD 2012-11-16 09:59:58 -08:00
s390
scheduler sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW 2012-09-13 16:52:04 +02:00
scsi [SCSI] hptiop: Support HighPoint RR4520/RR4522 HBA 2012-11-27 08:59:43 +04:00
security Documentation: fix Documentation/security/00-INDEX 2012-12-17 17:15:22 -08:00
serial firmware: remove computone driver firmware and documentation 2012-08-16 12:31:18 -07:00
sh
sound ALSA: usb-audio: Deprecate async_unlink option 2012-11-21 11:37:40 +01:00
spi Documentation: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
sysctl Documentation/sysctl/kernel.txt: document /proc/sys/shmall 2013-01-04 16:11:46 -08:00
target target: Simplify fabric sense data length handling 2012-09-17 17:12:58 -07:00
thermal Thermal: Add documentation for platform layer data 2012-11-05 14:00:09 +08:00
timers
trace doc: fix old config name of kprobetrace 2012-09-27 12:11:29 +02:00
usb USB: report submission of active URBs 2012-11-11 18:10:46 -08:00
vDSO
video4linux Documentation: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
virtual KVM: PPC: booke: Get/set guest EPCR register using ONE_REG interface 2012-12-06 01:34:20 +01:00
vm Merge branch 'akpm' (Andrew's patch-bomb) 2012-12-13 13:11:15 -08:00
w1 1-Wire: Add support for the maxim ds1825 temperature sensor 2012-08-16 12:33:59 -07:00
watchdog watchdog: fix watchdog-test.c build warning 2012-08-29 17:12:58 +02:00
wimax
x86 x86, doc: Boot protocol 2.12 is in 3.8 2013-02-08 12:02:38 +10:00
xtensa xtensa: initialize atomctl SR 2012-12-18 21:10:22 -08:00
zh_CN Documentation: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
.gitignore
00-INDEX Documentation: remove reference to feature-removal-schedule.txt 2012-12-17 17:15:12 -08:00
applying-patches.txt
atomic_ops.txt
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt
Changes
circular-buffers.txt
clk.txt
coccinelle.txt
CodingStyle CodingStyle: add networking specific block comment style 2012-10-06 03:04:59 +09:00
cpu-hotplug.txt doc: Add x86 CPU0 online/offline feature 2012-11-14 09:39:44 -08:00
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt firmware: remove last vestiges of dabusb 2012-11-21 13:03:01 -08:00
digsig.txt
DMA-API-HOWTO.txt Documentation DMA-API-HOWTO.txt Add dma mapping error check usage examples 2012-10-24 17:07:43 +02:00
DMA-API.txt dma-debug: New interfaces to debug dma mapping errors 2012-10-24 17:06:43 +02:00
DMA-attributes.txt common: DMA-mapping: add DMA_ATTR_FORCE_CONTIGUOUS attribute 2012-11-29 03:30:34 -08:00
dma-buf-sharing.txt doc: fix quite a few typos within Documentation 2012-11-19 14:28:24 +01:00
DMA-ISA-LPC.txt
dmaengine.txt
dontdiff x86: remove offsets.h from .gitignore and dontdiff 2012-11-19 14:10:53 +01:00
dynamic-debug-howto.txt
edac.txt Merge branch 'devel' 2012-07-29 21:11:05 -03:00
eisa.txt
email-clients.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gpio.txt gpiolib: provide provision to register pin ranges 2012-11-11 19:06:00 +01:00
highuid.txt
HOWTO HOWTO: fix double words typo 2012-12-10 15:54:27 +01:00
hw_random.txt
hwspinlock.txt
init.txt
initrd.txt
intel_txt.txt
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt
IPMI.txt IPMI: Remove SMBus driver info from the docs 2012-10-16 18:07:12 -07:00
IRQ-affinity.txt
IRQ-domain.txt irqdomain: update documentation 2012-12-05 23:52:10 +00:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt Kernel-doc: Convention: Use a "Return" section to describe return values 2012-11-27 21:08:57 +01:00
kernel-docs.txt
kernel-parameters.txt rcu: Make rcu_nocb_poll an early_param instead of module_param 2013-01-08 14:12:19 -08:00
kmemcheck.txt
kmemleak.txt
kobject.txt Documentation: Fix "struct kobj_type" to include newer members. 2012-09-04 16:06:34 -07:00
kprobes.txt
kref.txt kref: Add kref_get_unless_zero documentation 2012-11-28 18:36:06 +10:00
ldm.txt
local_ops.txt
lockdep-design.txt
lockstat.txt
lockup-watchdogs.txt
logo.gif
logo.txt
magic-number.txt
Makefile
ManagementStyle Documentation: ManagementStyle: fixed typo 2012-06-28 12:03:15 +02:00
md.txt
media-framework.txt
memory-barriers.txt Documentation: Fix memory-barriers.txt example 2012-10-23 14:44:46 -07:00
memory-hotplug.txt hotplug: update nodemasks management 2012-12-12 17:38:33 -08:00
mono.txt
mutex-design.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt percpu-rw-semaphore: fix documentation typos 2012-09-26 19:56:15 +02:00
pi-futex.txt
pinctrl.txt gpiolib: provide provision to register pin ranges 2012-11-11 19:06:00 +01:00
pnp.txt
preempt-locking.txt
printk-formats.txt lib/vsprintf: update documentation to cover all of %p[Mm][FR] 2012-10-06 03:04:50 +09:00
pwm.txt pwm: add devm_pwm_get() and devm_pwm_put() 2012-09-10 17:05:45 +02:00
ramoops.txt pstore/ftrace: Convert to its own enable/disable debugfs knob 2012-09-06 22:16:58 -07:00
rbtree.txt rbtree: move augmented rbtree functionality to rbtree_augmented.h 2012-10-09 16:22:40 +09:00
remoteproc.txt remoteproc: add rproc_report_crash function to notify rproc crashes 2012-09-18 12:53:22 +03:00
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt Documentation: remove __dev* attributes. 2013-01-03 15:57:16 -08:00
rt-mutex-design.txt
rt-mutex.txt
rtc.txt rtc-proc: permit the /proc/driver/rtc device to use other devices 2012-10-06 03:05:01 +09:00
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
smsc_ece1099.txt mfd: smsc: Add support for smsc gpio io/keypad driver 2012-10-01 15:27:48 +02:00
sparse.txt Documentation/sparse.txt: document context annotations for lock checking 2012-12-17 17:15:23 -08:00
spinlocks.txt
stable_api_nonsense.txt
stable_kernel_rules.txt stable: Allow merging of backports for serious user-visible performance issues 2012-06-25 12:11:58 -07:00
static-keys.txt
SubmitChecklist
SubmittingDrivers
SubmittingPatches
svga.txt
sysfs-rules.txt
sysrq.txt sparc64: Add global PMU register dumping via sysrq. 2012-10-16 09:34:01 -07:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt vfio: Trivial Documentation correction 2012-09-21 10:48:03 -06:00
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
vme_api.txt
volatile-considered-harmful.txt
workqueue.txt workqueue: reimplement WQ_HIGHPRI using a separate worker_pool 2012-07-13 22:24:45 -07:00
xz.txt
zorro.txt