diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/cmd_parser.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/cmd_parser.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/cmd_parser.c b/drivers/gpu/drm/i915/gvt/cmd_parser.c index a3cc080a46c6..8b87f130f7f1 100644 --- a/drivers/gpu/drm/i915/gvt/cmd_parser.c +++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c @@ -882,6 +882,47 @@ static int mocs_cmd_reg_handler(struct parser_exec_state *s, return 0; } +static int is_cmd_update_pdps(unsigned int offset, + struct parser_exec_state *s) +{ + u32 base = s->workload->engine->mmio_base; + return i915_mmio_reg_equal(_MMIO(offset), GEN8_RING_PDP_UDW(base, 0)); +} + +static int cmd_pdp_mmio_update_handler(struct parser_exec_state *s, + unsigned int offset, unsigned int index) +{ + struct intel_vgpu *vgpu = s->vgpu; + struct intel_vgpu_mm *shadow_mm = s->workload->shadow_mm; + struct intel_vgpu_mm *mm; + u64 pdps[GEN8_3LVL_PDPES]; + + if (shadow_mm->ppgtt_mm.root_entry_type == + GTT_TYPE_PPGTT_ROOT_L4_ENTRY) { + pdps[0] = (u64)cmd_val(s, 2) << 32; + pdps[0] |= cmd_val(s, 4); + + mm = intel_vgpu_find_ppgtt_mm(vgpu, pdps); + if (!mm) { + gvt_vgpu_err("failed to get the 4-level shadow vm\n"); + return -EINVAL; + } + intel_vgpu_mm_get(mm); + list_add_tail(&mm->ppgtt_mm.link, + &s->workload->lri_shadow_mm); + *cmd_ptr(s, 2) = upper_32_bits(mm->ppgtt_mm.shadow_pdps[0]); + *cmd_ptr(s, 4) = lower_32_bits(mm->ppgtt_mm.shadow_pdps[0]); + } else { + /* Currently all guests use PML4 table and now can't + * have a guest with 3-level table but uses LRI for + * PPGTT update. So this is simply un-testable. */ + GEM_BUG_ON(1); + gvt_vgpu_err("invalid shared shadow vm type\n"); + return -EINVAL; + } + return 0; +} + static int cmd_reg_handler(struct parser_exec_state *s, unsigned int offset, unsigned int index, char *cmd) { @@ -920,6 +961,10 @@ static int cmd_reg_handler(struct parser_exec_state *s, patch_value(s, cmd_ptr(s, index), VGT_PVINFO_PAGE); } + if (is_cmd_update_pdps(offset, s) && + cmd_pdp_mmio_update_handler(s, offset, index)) + return -EINVAL; + /* TODO * In order to let workload with inhibit context to generate * correct image data into memory, vregs values will be loaded to |