kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c, branch v4.16.17

drm/amdgpu:free CSA in unified place

2017-12-06T17:47:51+00:00

instead of doing it in each GFX ip's sw_fini Signed-off-by: Monk Liu Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/virt: remove redundant variable pf2vf_ver

2017-12-06T17:47:23+00:00

Variable pf2vf_ver is assigned but never read, it is redundant and hence can be removed. Cleans up clang warning: drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c:310:3: warning: Value stored to 'pf2vf_ver' is never read Reivewed-by: Horace Chen Signed-off-by: Colin Ian King Signed-off-by: Alex Deucher

drm/amdgpu:read VRAMLOST from gim

2017-12-04T21:41:45+00:00

Signed-off-by: Monk Liu Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu:cleanup in_sriov_reset and lock_reset

2017-12-04T21:41:31+00:00

since now gpu reset is unified with gpu_recover for both bare-metal and SR-IOV: 1)rename in_sriov_reset to in_gpu_reset 2)move lock_reset from adev->virt to adev Signed-off-by: Monk Liu Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/virt: add wait_reset virt ops

2017-12-04T21:33:13+00:00

Driver can use this interface to check if there's a function level reset done in hypervisor. It's helpful when IRQ handler for reset is not ready, or special handling is required. Acked-by: Alex Deucher Reviewed-by: Monk Liu Signed-off-by: pding Signed-off-by: Alex Deucher

drm/amdgpu/virt: add function to check MMIO (v2)

2017-12-04T21:33:13+00:00

MMIO space can be blocked on virtualised device. Add this function to check if MMIO is blocked or not. Todo: need a reliable method such like communation with hypervisor. v2: - add comments inline Signed-off-by: pding Acked-by: Alex Deucher Signed-off-by: Alex Deucher

drm/amdgpu: use irq-safe lock for kiq->ring_lock

2017-11-08T22:55:14+00:00

This lock is used during register accessing in SRIOV guest. The register accessing could happen both in irq enabled and irq disabled cases. Always use irq-safe lock. Signed-off-by: Pixel Ding Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu/virt: don't dereference undefined 'module' struct

2017-11-03T13:42:28+00:00

Accessing the THIS_MODULE directly is only possible when modules are enabled, otherwise we get a build failure: drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c: In function 'amdgpu_virt_init_data_exchange': drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c:331:20: error: dereferencing pointer to incomplete type 'struct module' Further, THIS_MODULE is NULL when the driver is built-in, so the code would likely cause a NULL pointer dereference. This adds an #ifdef check to avoid the compile-time error, plus a NULL pointer check before dereferencing THIS_MODULE. It might be better to find a way to avoid using the module version altogether. Fixes: 2dc8f81e4f82 ("drm/amdgpu: SR-IOV data exchange between PF&VF") Signed-off-by: Arnd Bergmann Signed-off-by: Alex Deucher Reviewed-by: Harry Wentland Reviewed-By: Xiangliang Yu

drm/amdgpu: busywait KIQ register accessing (v4)

2017-10-19T19:27:19+00:00

Register accessing is performed when IRQ is disabled. Never sleep in this function. Known issue: dead sleep in many use cases of index/data registers. v2: - wrap polling fence functions. - don't trigger IRQ for polling in case of wrongly fence signal. v3: - handle wrap round gracefully. - add comments for polling function v4: - don't return negative timeout confused with error code Signed-off-by: pding Reviewed-by: Christian König Signed-off-by: Alex Deucher

drm/amdgpu: SR-IOV data exchange between PF&VF

2017-10-19T19:26:59+00:00

SR-IOV need to exchange some data between PF&VF through shared VRAM PF will copy some necessary firmware and information to the shared VRAM. It also requires some information from VF. PF will send a key through mailbox2 to help guest calculate checksum so that it can verify whether the data is correct. So check the data on the specified offset of the shared VRAM, if the checksum is right, read values from it and write some VF information next to the data from PF. Signed-off-by: Horace Chen Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher