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path: root/drivers/gpu/drm/i915/gvt/opregion.c
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2020-03-06drm/i915/gvt: Fix emulated vbt size issueTina Zhang1-3/+2
The emulated vbt doesn't tell its size correctly. According to the intel_vbt_defs.h, vbt_header.vbt_size should the size of VBT (VBT Header, BDB Header and data blocks), and bdb_header.bdb_size should be the size of BDB (BDB Header and data blocks). This patch fixes the issue and lets vbt provided by GVT-g pass the guest i915's sanity test. v2: refine the commit message. (Zhenyu) Signed-off-by: Tina Zhang <tina.zhang@intel.com> Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20200305131600.29640-1-tina.zhang@intel.com
2019-06-17drm/i915: move modesetting core code under display/Jani Nikula1-1/+1
Now that we have a new subdirectory for display code, continue by moving modesetting core code. display/intel_frontbuffer.h sticks out like a sore thumb, otherwise this is, again, a surprisingly clean operation. v2: - don't move intel_sideband.[ch] (Ville) - use tabs for Makefile file lists and sort them Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190613084416.6794-3-jani.nikula@intel.com
2018-09-27BackMerge v4.19-rc5 into drm-nextDave Airlie1-11/+9
Sean Paul requested an -rc5 backmerge from some sun4i fixes. Signed-off-by: Dave Airlie <airlied@redhat.com>
2018-09-06drm/i915/gvt: Fix the incorrect length of child_device_config issueWeinan Li1-11/+9
GVT-g emualte the opregion for guest with bdb version as '186' which child_device_config length should be '33'. v2: split into 2 patch. 1st for issue fix, 2nd for code clean up.(Zhenyu) v3: add fixes tag.(Zhenyu) Fixes: 4023f301d28f ("drm/i915/gvt: opregion virtualization for win") CC: Xiaolin Zhang <xiaolin.zhang@intel.com> Reviewed-by: Xiaolin Zhang <xiaolin.zhang@intel.com> Signed-off-by: Weinan Li <weinan.z.li@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-08-07drm/i915/gvt: Fix function comment doc errorsZhenyu Wang1-1/+0
Caught by W=1 to fix left wrong function comment doc. Reviewed-by: Hang Yuan <hang.yuan@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2018-02-06drm/i915/gvt: Use KVM r/w to access guest opregionTina Zhang1-28/+70
For KVMGT, the guest opregion, which is handled by VFIO, is actually a piece of guest memory which won't be accessed by devices. So, its mfn shouldn't be obtained through VFIO interface. This patch uses KVM r/w interface to access the data in guest opregion. Fix the guest opregion accessing issue when host "intel_iommu=on". v3: - Remove mapped flag for KVM/VFIO usage, as it's useless for KVM. v2: - Set the gpa correctly when invoking KVM r/w operations. (Zhenyu) Signed-off-by: Tina Zhang <tina.zhang@intel.com> Cc: Yan Zhao <yan.y.zhao@intel.com> Cc: Xiong Zhang <xiong.y.zhang@intel.com> Signed-off-by: Zhi Wang <zhi.a.wang@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
2017-12-04drm/i915/gvt: Add opregion supportTina Zhang1-16/+58
Windows guest driver needs vbt in opregion, to configure the setting for display. Without opregion support, the display registers won't be set and this blocks display model to get the correct information of the guest display plane. This patch is to provide a virtual opregion for guest. The original author of this patch is Xiaoguang Chen. This patch is split from the "Dma-buf support for GVT-g" patch set, with being rebased to the latest gvt-staging branch. v3: - add checking region index during intel_vgpu_rw. (Xiong) v2: - refine intel_vgpu_reg_release_opregion. (Xiong) Here are the previous version comments: v18: - unmap vgpu's opregion when destroying vgpu. v16: - rebase to 4.14.0-rc6. Signed-off-by: Bing Niu <bing.niu@intel.com> Signed-off-by: Tina Zhang <tina.zhang@intel.com> Tested-by: Xiong Zhang <xiong.y.zhang@intel.com> Cc: Zhenyu Wang <zhenyuw@linux.intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-12-04drm/i915/gvt: Alloc and Init guest opregion at vgpu creationXiong Zhang1-49/+41
Currently guest opregion is allocated and initialised when guest write opregion base register. This is too late for kvmgt, so move it to vgpu_create time. Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com> Tested-by: Tina Zhang <tina.zhang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-12-04drm/i915/gvt: Fix out-of-bounds buffer write into opregion->signature[]Chris Wilson1-2/+3
sparse spots drivers/gpu/drm/i915/gvt/opregion.c:234 alloc_and_init_virt_opregion() error: memcpy() 'header->signature' too small (16 vs 17) as gvt is indeed trying to memcpy a string longer than the signature[]. Fixes: b2d6ef70614e ("drm/i915/gvt: Let each vgpu has separate opregion memory") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Xiong Zhang <xiong.y.zhang@intel.com> Cc: Zhenyu Wang <zhenyuw@linux.intel.com> Cc: Zhi Wang <zhi.a.wang@intel.com> Cc: intel-gvt-dev@lists.freedesktop.org Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-11-16drm/i915/gvt: Let each vgpu has separate opregion memoryXiong Zhang1-60/+41
Currently every vgpu share a common gvt opregion memory, but it is freed at vgpu destroy, then the later vgpu doesn't have opregion memory once the first vgpu is destroyed. This cause guest function failure like reboot, second or later boot. This patch allocate and init virt opregion memory for each vgpu, so this memory could be freed at vgpu destroy. Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-11-16drm/i915/gvt: opregion virtualization for win guestXiaolin Zhang1-9/+73
this is an enhanced opregion emulation for win guest support by initializing more data members including opregion header size, version and child device propertity for display port. for simplicity, redefined child_device_config structure. Signed-off-by: Xiaolin Zhang <xiaolin.zhang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-11-16drm/i915/gvt: Add support for opregion virtualizationXiaolin Zhang1-24/+156
opregion emulated with a copy from host which leads to some display bugs such as guest resolution adjustment failure due to host opregion fail to claim port D support. with a fake opregion table provided to fully emulate opregion to meet guest port requirement. v1 - initial patch v2 - reforamt opregion arrary with 0x02x output v3 - opregion array removed with opregion generation on host initizaiton v4 - rebased v3 patch from stable branch to staging branch which also has different struct child_device_config and addressed v3 review comments. Signed-off-by: Xiaolin Zhang <xiaolin.zhang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-03-17drm/i915/gvt: replace the gvt_err with gvt_vgpu_errTina Zhang1-5/+5
gvt_err should be used only for the very few critical error message during host i915 drvier initialization. This patch 1. removes the redundant gvt_err; 2. creates a new gvt_vgpu_err to show errors caused by vgpu; 3. replaces the most gvt_err with gvt_vgpu_err; 4. leaves very few gvt_err for dumping gvt error during host gvt initialization. v2. change name to gvt_vgpu_err and add vgpu id to the message. (Kevin) add gpu id to gvt_vgpu_err. (Zhi) v3. remove gpu id from gvt_vgpu_err caller. (Zhi) v4. add vgpu check to the gvt_vgpu_err macro. (Zhiyuan) v5. add comments for v3 and v4. v6. split the big patch into two, with this patch only for checking gvt_vgpu_err. (Zhenyu) v7. rebase to staging branch v8. rebase to fix branch Signed-off-by: Tina Zhang <tina.zhang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-02-17drm/i915/gvt: Fix check error on opregion.cZhenyu Wang1-3/+2
As we switched to memremap for opregion, shouldn't use any __iomem for that, and move to use memcpy instead. This fixed static check errors for: CHECK drivers/gpu/drm/i915//gvt/opregion.c drivers/gpu/drm/i915//gvt/opregion.c:142:31: warning: incorrect type in argument 1 (different address spaces) drivers/gpu/drm/i915//gvt/opregion.c:142:31: expected void *addr drivers/gpu/drm/i915//gvt/opregion.c:142:31: got void [noderef] <asn:2>*opregion_va drivers/gpu/drm/i915//gvt/opregion.c:160:35: warning: incorrect type in assignment (different address spaces) drivers/gpu/drm/i915//gvt/opregion.c:160:35: expected void [noderef] <asn:2>*opregion_va drivers/gpu/drm/i915//gvt/opregion.c:160:35: got void * Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2017-01-09drm/i915/gvt: cleanup opregion memory allocation codeJike Song1-4/+4
According to the spec, ACPI OpRegion must be placed at a physical address below 4G. That is, for a vGPU it must be associated with a GPA below 4G, but on host side, it doesn't matter where the backing pages actually are. So when allocating pages from host, the GFP_DMA32 flag is unnecessary. Also the allocation is from a sleepable context, so GFP_ATOMIC is also unnecessary. This patch also removes INTEL_GVT_OPREGION_PORDER and use get_order() instead. Signed-off-by: Jike Song <jike.song@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-12-26drm/i915/gvt: fix an error in opregion handlingMin He1-1/+1
It should be vgpu_opregion(vgpu)->va, not vgpu_opregion(vgpu). Signed-off-by: Min He <min.he@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-11-10drm/i915/gvt: remove obsolete code for old kvmgt opregionJike Song1-29/+5
Current GVT contains some obsolete logic originally cooked to support the old, non-vfio kvmgt, which is actually workarounds. We don't support that anymore, so it's safe to remove it and make a better framework. Signed-off-by: Jike Song <jike.song@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-24drm/i915/gvt: Fix failure when ACPI is not enabledZhenyu Wang1-3/+3
Directly use memremap instead of acpi function for opregion mapping. Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20drm/i915/gvt: fix sparse warnings on different address spacesDu, Changbin1-1/+1
Add proper __iomem annotation for pointers obtained via ioremap(). Signed-off-by: Du, Changbin <changbin.du@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20drm/i915/gvt: clean up intel_gvt.h as interface for i915 coreZhenyu Wang1-0/+1
i915 core should only call functions and structures exposed through intel_gvt.h. Remove internal gvt.h and i915_pvinfo.h. Change for internal intel_gvt structure as private handler which not requires to expose gvt internal structure for i915 core. v2: Fix per Chris's comment - carefully handle dev_priv->gvt assignment - add necessary bracket for macro helper - forward declartion struct intel_gvt - keep free operation within same file handling alloc v3: fix use after free and remove intel_gvt.initialized v4: change to_gvt() to an inline Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-14drm/i915/gvt: vGPU PCI configuration space virtualizationZhi Wang1-0/+343
This patch introduces vGPU PCI configuration space virtualization. - Adjust the trapped GPFN(Guest Page Frame Number) window of virtual GEN PCI BAR 0 when guest initializes PCI BAR 0 address. - Emulate OpRegion when guest touches OpRegion. - Pass-through a part of aperture to guest when guest initializes aperture BAR. Signed-off-by: Zhi Wang <zhi.a.wang@intel.com> Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
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