diff options
| author | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2024-03-27 19:27:40 +0100 |
|---|---|---|
| committer | Michal Wajdeczko <michal.wajdeczko@intel.com> | 2024-03-28 13:45:37 +0100 |
| commit | 0613834f3dddb4bf3ff82861dad661b1ede97f7b (patch) | |
| tree | 434913fa1e1d909ee40d03ea12d4f0a1bd8be5b7 /drivers/gpu/drm/xe/xe_sriov.c | |
| parent | d79c88c45dae1f1c5f80bd473811c6d053f55828 (diff) | |
drm/xe/vf: Add proper detection of the SR-IOV VF mode
SR-IOV VF mode detection is based on testing VF capability bit on
the register that is accessible from both the PF and enabled VFs.
Bspec: 49904, 53227
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240327182740.407-4-michal.wajdeczko@intel.com
Diffstat (limited to 'drivers/gpu/drm/xe/xe_sriov.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_sriov.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/gpu/drm/xe/xe_sriov.c b/drivers/gpu/drm/xe/xe_sriov.c index 2bcef998c8a9..3e103edf7174 100644 --- a/drivers/gpu/drm/xe/xe_sriov.c +++ b/drivers/gpu/drm/xe/xe_sriov.c @@ -5,7 +5,11 @@ #include <drm/drm_managed.h> +#include "regs/xe_sriov_regs.h" + #include "xe_assert.h" +#include "xe_device.h" +#include "xe_mmio.h" #include "xe_sriov.h" /** @@ -28,6 +32,13 @@ const char *xe_sriov_mode_to_string(enum xe_sriov_mode mode) } } +static bool test_is_vf(struct xe_device *xe) +{ + u32 value = xe_mmio_read32(xe_root_mmio_gt(xe), VF_CAP_REG); + + return value & VF_CAP; +} + /** * xe_sriov_probe_early - Probe a SR-IOV mode. * @xe: the &xe_device to probe mode on @@ -44,8 +55,10 @@ void xe_sriov_probe_early(struct xe_device *xe) enum xe_sriov_mode mode = XE_SRIOV_MODE_NONE; bool has_sriov = xe->info.has_sriov; - /* TODO: replace with proper mode detection */ - xe_assert(xe, !has_sriov); + if (has_sriov) { + if (test_is_vf(xe)) + mode = XE_SRIOV_MODE_VF; + } xe_assert(xe, !xe->sriov.__mode); xe->sriov.__mode = mode; |