On Thu, 24 Mar 2022, Jani Nikula <jani.nik...@intel.com> wrote:
> On Tue, 22 Mar 2022, Tvrtko Ursulin <tvrtko.ursu...@linux.intel.com> wrote:
>> From: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
>>
>> ...
>>
>> Signed-off-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
>> Cc: Jani Nikula <jani.nik...@intel.com>
>> Cc: Lucas De Marchi <lucas.demar...@intel.com>
>> ---
>> Typed up how I see it - bash away.
>
> So is intel_vtd_active() so performance critical that it needs to be
> inline?
>
> We're passing struct drm_i915_private * everywhere we can, and it just
> feels silly to use struct drm_device * to avoid the include.
>
> Static inlines considered harmful. :p
Otherwise,
Acked-by: Jani Nikula <jani.nik...@intel.com>
>
>
> BR,
> Jani.
>
>
>> ---
>> drivers/gpu/drm/i915/display/intel_bw.c | 3 +-
>> drivers/gpu/drm/i915/display/intel_display.c | 9 ++++-
>> drivers/gpu/drm/i915/display/intel_display.h | 2 ++
>> drivers/gpu/drm/i915/display/intel_fbc.c | 3 +-
>> drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 3 +-
>> drivers/gpu/drm/i915/gem/i915_gemfs.c | 3 +-
>> drivers/gpu/drm/i915/gt/intel_ggtt.c | 5 +--
>> drivers/gpu/drm/i915/gt/intel_gtt.c | 12 +++++++
>> drivers/gpu/drm/i915/gt/intel_gtt.h | 2 ++
>> drivers/gpu/drm/i915/i915_debugfs.c | 1 +
>> drivers/gpu/drm/i915/i915_driver.c | 3 +-
>> drivers/gpu/drm/i915/i915_driver.h | 4 +++
>> drivers/gpu/drm/i915/i915_drv.h | 37 --------------------
>> drivers/gpu/drm/i915/i915_gpu_error.c | 3 +-
>> drivers/gpu/drm/i915/intel_device_info.c | 4 ++-
>> drivers/gpu/drm/i915/intel_pch.c | 3 +-
>> drivers/gpu/drm/i915/intel_vtd.h | 27 ++++++++++++++
>> 17 files changed, 76 insertions(+), 48 deletions(-)
>> create mode 100644 drivers/gpu/drm/i915/intel_vtd.h
>>
>> diff --git a/drivers/gpu/drm/i915/display/intel_bw.c
>> b/drivers/gpu/drm/i915/display/intel_bw.c
>> index ac11ff19e47d..6c9cb4f97218 100644
>> --- a/drivers/gpu/drm/i915/display/intel_bw.c
>> +++ b/drivers/gpu/drm/i915/display/intel_bw.c
>> @@ -13,6 +13,7 @@
>> #include "intel_mchbar_regs.h"
>> #include "intel_pcode.h"
>> #include "intel_pm.h"
>> +#include "intel_vtd.h"
>>
>> /* Parameters for Qclk Geyserville (QGV) */
>> struct intel_qgv_point {
>> @@ -649,7 +650,7 @@ static unsigned int intel_bw_data_rate(struct
>> drm_i915_private *dev_priv,
>> for_each_pipe(dev_priv, pipe)
>> data_rate += bw_state->data_rate[pipe];
>>
>> - if (DISPLAY_VER(dev_priv) >= 13 && intel_vtd_active(dev_priv))
>> + if (DISPLAY_VER(dev_priv) >= 13 && intel_vtd_active(dev_priv->drm.dev))
>> data_rate = DIV_ROUND_UP(data_rate * 105, 100);
>>
>> return data_rate;
>> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
>> b/drivers/gpu/drm/i915/display/intel_display.c
>> index dc6e21e4ef0b..e80f3ca3ee4e 100644
>> --- a/drivers/gpu/drm/i915/display/intel_display.c
>> +++ b/drivers/gpu/drm/i915/display/intel_display.c
>> @@ -110,6 +110,7 @@
>> #include "intel_quirks.h"
>> #include "intel_sprite.h"
>> #include "intel_tc.h"
>> +#include "intel_vtd.h"
>> #include "intel_vga.h"
>> #include "i9xx_plane.h"
>> #include "skl_scaler.h"
>> @@ -1197,7 +1198,7 @@ static bool needs_async_flip_vtd_wa(const struct
>> intel_crtc_state *crtc_state)
>> {
>> struct drm_i915_private *i915 = to_i915(crtc_state->uapi.crtc->dev);
>>
>> - return crtc_state->uapi.async_flip && intel_vtd_active(i915) &&
>> + return crtc_state->uapi.async_flip && intel_vtd_active(i915->drm.dev) &&
>> (DISPLAY_VER(i915) == 9 || IS_BROADWELL(i915) ||
>> IS_HASWELL(i915));
>> }
>>
>> @@ -10699,3 +10700,9 @@ void intel_display_driver_unregister(struct
>> drm_i915_private *i915)
>> acpi_video_unregister();
>> intel_opregion_unregister(i915);
>> }
>> +
>> +bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv)
>> +{
>> + return DISPLAY_VER(dev_priv) >= 6 &&
>> + intel_vtd_active(dev_priv->drm.dev);
>> +}
>> diff --git a/drivers/gpu/drm/i915/display/intel_display.h
>> b/drivers/gpu/drm/i915/display/intel_display.h
>> index 8513703086b7..d69587c76e71 100644
>> --- a/drivers/gpu/drm/i915/display/intel_display.h
>> +++ b/drivers/gpu/drm/i915/display/intel_display.h
>> @@ -694,4 +694,6 @@ void assert_transcoder(struct drm_i915_private *dev_priv,
>> #define I915_STATE_WARN_ON(x)
>> \
>> I915_STATE_WARN((x), "%s", "WARN_ON(" __stringify(x) ")")
>>
>> +bool intel_scanout_needs_vtd_wa(struct drm_i915_private *dev_priv);
>> +
>> #endif
>> diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c
>> b/drivers/gpu/drm/i915/display/intel_fbc.c
>> index 142280b6ce6d..00a3e30587a5 100644
>> --- a/drivers/gpu/drm/i915/display/intel_fbc.c
>> +++ b/drivers/gpu/drm/i915/display/intel_fbc.c
>> @@ -50,6 +50,7 @@
>> #include "intel_display_types.h"
>> #include "intel_fbc.h"
>> #include "intel_frontbuffer.h"
>> +#include "intel_vtd.h"
>>
>> #define for_each_fbc_id(__dev_priv, __fbc_id) \
>> for ((__fbc_id) = INTEL_FBC_A; (__fbc_id) < I915_MAX_FBCS;
>> (__fbc_id)++) \
>> @@ -1643,7 +1644,7 @@ static int intel_sanitize_fbc_option(struct
>> drm_i915_private *i915)
>> static bool need_fbc_vtd_wa(struct drm_i915_private *i915)
>> {
>> /* WaFbcTurnOffFbcWhenHyperVisorIsUsed:skl,bxt */
>> - if (intel_vtd_active(i915) &&
>> + if (intel_vtd_active(i915->drm.dev) &&
>> (IS_SKYLAKE(i915) || IS_BROXTON(i915))) {
>> drm_info(&i915->drm,
>> "Disabling framebuffer compression (FBC) to prevent
>> screen flicker with VT-d enabled\n");
>> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
>> b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
>> index 143f61aaa867..9b986b1b0b60 100644
>> --- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
>> +++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
>> @@ -19,6 +19,7 @@
>> #include "i915_reg.h"
>> #include "i915_vgpu.h"
>> #include "intel_mchbar_regs.h"
>> +#include "intel_vtd.h"
>>
>> /*
>> * The BIOS typically reserves some of the system's memory for the exclusive
>> @@ -403,7 +404,7 @@ static int i915_gem_init_stolen(struct
>> intel_memory_region *mem)
>> return 0;
>> }
>>
>> - if (intel_vtd_active(i915) && GRAPHICS_VER(i915) < 8) {
>> + if (intel_vtd_active(i915->drm.dev) && GRAPHICS_VER(i915) < 8) {
>> drm_notice(&i915->drm,
>> "%s, disabling use of stolen memory\n",
>> "DMAR active");
>> diff --git a/drivers/gpu/drm/i915/gem/i915_gemfs.c
>> b/drivers/gpu/drm/i915/gem/i915_gemfs.c
>> index 7271fbf813fa..271826642bd4 100644
>> --- a/drivers/gpu/drm/i915/gem/i915_gemfs.c
>> +++ b/drivers/gpu/drm/i915/gem/i915_gemfs.c
>> @@ -9,6 +9,7 @@
>>
>> #include "i915_drv.h"
>> #include "i915_gemfs.h"
>> +#include "intel_vtd.h"
>>
>> int i915_gemfs_init(struct drm_i915_private *i915)
>> {
>> @@ -32,7 +33,7 @@ int i915_gemfs_init(struct drm_i915_private *i915)
>> */
>>
>> opts = NULL;
>> - if (intel_vtd_active(i915)) {
>> + if (intel_vtd_active(i915->drm.dev)) {
>> if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) {
>> opts = huge_opt;
>> drm_info(&i915->drm,
>> diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c
>> b/drivers/gpu/drm/i915/gt/intel_ggtt.c
>> index 04191fe2ee34..386181cec300 100644
>> --- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
>> +++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
>> @@ -21,6 +21,7 @@
>> #include "i915_vgpu.h"
>>
>> #include "intel_gtt.h"
>> +#include "intel_vtd.h"
>> #include "gen8_ppgtt.h"
>>
>> static void i915_ggtt_color_adjust(const struct drm_mm_node *node,
>> @@ -104,7 +105,7 @@ static bool needs_idle_maps(struct drm_i915_private
>> *i915)
>> * Query intel_iommu to see if we need the workaround. Presumably that
>> * was loaded first.
>> */
>> - if (!intel_vtd_active(i915))
>> + if (!intel_vtd_active(i915->drm.dev))
>> return false;
>>
>> if (GRAPHICS_VER(i915) == 5 && IS_MOBILE(i915))
>> @@ -1258,7 +1259,7 @@ int i915_ggtt_probe_hw(struct drm_i915_private *i915)
>> if (ret)
>> return ret;
>>
>> - if (intel_vtd_active(i915))
>> + if (intel_vtd_active(i915->drm.dev))
>> drm_info(&i915->drm, "VT-d active for gfx access\n");
>>
>> return 0;
>> diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.c
>> b/drivers/gpu/drm/i915/gt/intel_gtt.c
>> index aed6de2d5a79..ee17e987cddc 100644
>> --- a/drivers/gpu/drm/i915/gt/intel_gtt.c
>> +++ b/drivers/gpu/drm/i915/gt/intel_gtt.c
>> @@ -16,6 +16,18 @@
>> #include "intel_gt.h"
>> #include "intel_gt_regs.h"
>> #include "intel_gtt.h"
>> +#include "intel_vtd.h"
>> +
>> +
>> +static bool intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *i915)
>> +{
>> + return IS_BROXTON(i915) && intel_vtd_active(i915->drm.dev);
>> +}
>> +
>> +bool intel_vm_no_concurrent_access_wa(struct drm_i915_private *i915)
>> +{
>> + return IS_CHERRYVIEW(i915) || intel_ggtt_update_needs_vtd_wa(i915);
>> +}
>>
>> struct drm_i915_gem_object *alloc_pt_lmem(struct i915_address_space *vm,
>> int sz)
>> {
>> diff --git a/drivers/gpu/drm/i915/gt/intel_gtt.h
>> b/drivers/gpu/drm/i915/gt/intel_gtt.h
>> index 4529b5e9f6e6..5922e2cf4d8d 100644
>> --- a/drivers/gpu/drm/i915/gt/intel_gtt.h
>> +++ b/drivers/gpu/drm/i915/gt/intel_gtt.h
>> @@ -382,6 +382,8 @@ struct i915_ppgtt {
>> #define i915_is_dpt(vm) ((vm)->is_dpt)
>> #define i915_is_ggtt_or_dpt(vm) (i915_is_ggtt(vm) || i915_is_dpt(vm))
>>
>> +bool intel_vm_no_concurrent_access_wa(struct drm_i915_private *i915);
>> +
>> int __must_check
>> i915_vm_lock_objects(struct i915_address_space *vm, struct i915_gem_ww_ctx
>> *ww);
>>
>> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
>> b/drivers/gpu/drm/i915/i915_debugfs.c
>> index 2cbd1f58e754..cda71457d630 100644
>> --- a/drivers/gpu/drm/i915/i915_debugfs.c
>> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
>> @@ -48,6 +48,7 @@
>>
>> #include "i915_debugfs.h"
>> #include "i915_debugfs_params.h"
>> +#include "i915_driver.h"
>> #include "i915_irq.h"
>> #include "i915_scheduler.h"
>> #include "intel_mchbar_regs.h"
>> diff --git a/drivers/gpu/drm/i915/i915_driver.c
>> b/drivers/gpu/drm/i915/i915_driver.c
>> index 64e6f76861f9..f03a63b57f05 100644
>> --- a/drivers/gpu/drm/i915/i915_driver.c
>> +++ b/drivers/gpu/drm/i915/i915_driver.c
>> @@ -96,6 +96,7 @@
>> #include "intel_pcode.h"
>> #include "intel_pm.h"
>> #include "intel_region_ttm.h"
>> +#include "intel_vtd.h"
>> #include "vlv_suspend.h"
>>
>> static const struct drm_driver i915_drm_driver;
>> @@ -744,7 +745,7 @@ void
>> i915_print_iommu_status(struct drm_i915_private *i915, struct drm_printer
>> *p)
>> {
>> drm_printf(p, "iommu: %s\n",
>> - str_enabled_disabled(intel_vtd_active(i915)));
>> + str_enabled_disabled(intel_vtd_active(i915->drm.dev)));
>> }
>>
>> static void i915_welcome_messages(struct drm_i915_private *dev_priv)
>> diff --git a/drivers/gpu/drm/i915/i915_driver.h
>> b/drivers/gpu/drm/i915/i915_driver.h
>> index 9d11de65daaf..44ec543d92cb 100644
>> --- a/drivers/gpu/drm/i915/i915_driver.h
>> +++ b/drivers/gpu/drm/i915/i915_driver.h
>> @@ -11,6 +11,7 @@
>> struct pci_dev;
>> struct pci_device_id;
>> struct drm_i915_private;
>> +struct drm_printer;
>>
>> #define DRIVER_NAME "i915"
>> #define DRIVER_DESC "Intel Graphics"
>> @@ -26,4 +27,7 @@ void i915_driver_shutdown(struct drm_i915_private *i915);
>> int i915_driver_resume_switcheroo(struct drm_i915_private *i915);
>> int i915_driver_suspend_switcheroo(struct drm_i915_private *i915,
>> pm_message_t state);
>>
>> +void
>> +i915_print_iommu_status(struct drm_i915_private *i915, struct drm_printer
>> *p);
>> +
>> #endif /* __I915_DRIVER_H__ */
>> diff --git a/drivers/gpu/drm/i915/i915_drv.h
>> b/drivers/gpu/drm/i915/i915_drv.h
>> index 217c09422711..799f386a7ef2 100644
>> --- a/drivers/gpu/drm/i915/i915_drv.h
>> +++ b/drivers/gpu/drm/i915/i915_drv.h
>> @@ -32,9 +32,6 @@
>>
>> #include <uapi/drm/i915_drm.h>
>>
>> -#include <asm/hypervisor.h>
>> -
>> -#include <linux/intel-iommu.h>
>> #include <linux/pm_qos.h>
>>
>> #include <drm/drm_connector.h>
>> @@ -1387,43 +1384,9 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
>> #define HAS_PERCTX_PREEMPT_CTRL(i915) \
>> ((GRAPHICS_VER(i915) >= 9) && GRAPHICS_VER_FULL(i915) < IP_VER(12, 55))
>>
>> -static inline bool run_as_guest(void)
>> -{
>> - return !hypervisor_is_type(X86_HYPER_NATIVE);
>> -}
>> -
>> #define HAS_D12_PLANE_MINIMIZATION(dev_priv) (IS_ROCKETLAKE(dev_priv) || \
>> IS_ALDERLAKE_S(dev_priv))
>>
>> -static inline bool intel_vtd_active(struct drm_i915_private *i915)
>> -{
>> - if (device_iommu_mapped(i915->drm.dev))
>> - return true;
>> -
>> - /* Running as a guest, we assume the host is enforcing VT'd */
>> - return run_as_guest();
>> -}
>> -
>> -void
>> -i915_print_iommu_status(struct drm_i915_private *i915, struct drm_printer
>> *p);
>> -
>> -static inline bool intel_scanout_needs_vtd_wa(struct drm_i915_private
>> *dev_priv)
>> -{
>> - return DISPLAY_VER(dev_priv) >= 6 && intel_vtd_active(dev_priv);
>> -}
>> -
>> -static inline bool
>> -intel_ggtt_update_needs_vtd_wa(struct drm_i915_private *i915)
>> -{
>> - return IS_BROXTON(i915) && intel_vtd_active(i915);
>> -}
>> -
>> -static inline bool
>> -intel_vm_no_concurrent_access_wa(struct drm_i915_private *i915)
>> -{
>> - return IS_CHERRYVIEW(i915) || intel_ggtt_update_needs_vtd_wa(i915);
>> -}
>> -
>> /* i915_gem.c */
>> void i915_gem_init_early(struct drm_i915_private *dev_priv);
>> void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
>> diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c
>> b/drivers/gpu/drm/i915/i915_gpu_error.c
>> index a8acc6fbb299..a221b19e588c 100644
>> --- a/drivers/gpu/drm/i915/i915_gpu_error.c
>> +++ b/drivers/gpu/drm/i915/i915_gpu_error.c
>> @@ -48,6 +48,7 @@
>> #include "gt/intel_gt.h"
>> #include "gt/intel_gt_pm.h"
>> #include "gt/intel_gt_regs.h"
>> +#include "intel_vtd.h"
>>
>> #include "i915_driver.h"
>> #include "i915_drv.h"
>> @@ -1814,7 +1815,7 @@ static void capture_gen(struct i915_gpu_coredump
>> *error)
>> error->wakelock = atomic_read(&i915->runtime_pm.wakeref_count);
>> error->suspended = i915->runtime_pm.suspended;
>>
>> - error->iommu = intel_vtd_active(i915);
>> + error->iommu = intel_vtd_active(i915->drm.dev);
>> error->reset_count = i915_reset_count(&i915->gpu_error);
>> error->suspend_count = i915->suspend_count;
>>
>> diff --git a/drivers/gpu/drm/i915/intel_device_info.c
>> b/drivers/gpu/drm/i915/intel_device_info.c
>> index 8d458226f478..21423e6eacb3 100644
>> --- a/drivers/gpu/drm/i915/intel_device_info.c
>> +++ b/drivers/gpu/drm/i915/intel_device_info.c
>> @@ -30,6 +30,7 @@
>> #include "display/intel_cdclk.h"
>> #include "display/intel_de.h"
>> #include "intel_device_info.h"
>> +#include "intel_vtd.h"
>> #include "i915_drv.h"
>>
>> #define PLATFORM_NAME(x) [INTEL_##x] = #x
>> @@ -389,7 +390,8 @@ void intel_device_info_runtime_init(struct
>> drm_i915_private *dev_priv)
>> info->display.has_dsc = 0;
>> }
>>
>> - if (GRAPHICS_VER(dev_priv) == 6 && intel_vtd_active(dev_priv)) {
>> + if (GRAPHICS_VER(dev_priv) == 6 &&
>> + intel_vtd_active(dev_priv->drm.dev)) {
>> drm_info(&dev_priv->drm,
>> "Disabling ppGTT for VT-d support\n");
>> info->ppgtt_type = INTEL_PPGTT_NONE;
>> diff --git a/drivers/gpu/drm/i915/intel_pch.c
>> b/drivers/gpu/drm/i915/intel_pch.c
>> index 4cce044efde2..c232343d5ba7 100644
>> --- a/drivers/gpu/drm/i915/intel_pch.c
>> +++ b/drivers/gpu/drm/i915/intel_pch.c
>> @@ -5,6 +5,7 @@
>>
>> #include "i915_drv.h"
>> #include "intel_pch.h"
>> +#include "intel_vtd.h"
>>
>> /* Map PCH device id to PCH type, or PCH_NONE if unknown. */
>> static enum intel_pch
>> @@ -256,7 +257,7 @@ void intel_detect_pch(struct drm_i915_private *dev_priv)
>> dev_priv->pch_type = PCH_NOP;
>> dev_priv->pch_id = 0;
>> } else if (!pch) {
>> - if (run_as_guest() && HAS_DISPLAY(dev_priv)) {
>> + if (intel_vtd_run_as_guest() && HAS_DISPLAY(dev_priv)) {
>> intel_virt_detect_pch(dev_priv, &id, &pch_type);
>> dev_priv->pch_type = pch_type;
>> dev_priv->pch_id = id;
>> diff --git a/drivers/gpu/drm/i915/intel_vtd.h
>> b/drivers/gpu/drm/i915/intel_vtd.h
>> new file mode 100644
>> index 000000000000..1aa5d813f002
>> --- /dev/null
>> +++ b/drivers/gpu/drm/i915/intel_vtd.h
>> @@ -0,0 +1,27 @@
>> +/* SPDX-License-Identifier: MIT */
>> +/*
>> + * Copyright © 2022 Intel Corporation
>> + */
>> +
>> +#ifndef __INTEL_VTD_H__
>> +#define __INTEL_VTD_H__
>> +
>> +#include <linux/device.h>
>> +#include <linux/types.h>
>> +#include <asm/hypervisor.h>
>> +
>> +static inline bool intel_vtd_run_as_guest(void)
>> +{
>> + return !hypervisor_is_type(X86_HYPER_NATIVE);
>> +}
>> +
>> +static inline bool intel_vtd_active(struct device *dev)
>> +{
>> + if (device_iommu_mapped(dev))
>> + return true;
>> +
>> + /* Running as a guest, we assume the host is enforcing VT'd */
>> + return intel_vtd_run_as_guest();
>> +}
>> +
>> +#endif /* __INTEL_VTD_H__ */
--
Jani Nikula, Intel Open Source Graphics Center
