diff options
| author | Michał Winiarski <michal.winiarski@intel.com> | 2024-02-19 16:05:30 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2024-02-20 22:13:47 +0300 |
| commit | bf8ec3c3e82c70b39244ccde96a875773c1fc620 (patch) | |
| tree | cab1208abdd3383d961723eade3dbab1a63c972a /drivers/gpu/drm/xe/xe_uc.c | |
| parent | 8a4587ef9f952105d1d5a7ffcdee848219cdc743 (diff) | |
| download | linux-bf8ec3c3e82c70b39244ccde96a875773c1fc620.tar.xz | |
drm/xe: Initialize GuC earlier during probe
SR-IOV VF has limited access to MMIO registers. Fortunately, it is able
to access a curated subset that is needed to initialize the driver by
communicating with SR-IOV PF using GuC CT.
Initialize GuC earlier in order to keep the unified probe ordering
between VF and PF modes.
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240219130530.1406044-4-michal.winiarski@intel.com
Diffstat (limited to 'drivers/gpu/drm/xe/xe_uc.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_uc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/gpu/drm/xe/xe_uc.c b/drivers/gpu/drm/xe/xe_uc.c index d62137306d28..7033f8c1b431 100644 --- a/drivers/gpu/drm/xe/xe_uc.c +++ b/drivers/gpu/drm/xe/xe_uc.c @@ -32,13 +32,15 @@ uc_to_xe(struct xe_uc *uc) /* Should be called once at driver load only */ int xe_uc_init(struct xe_uc *uc) { + struct xe_device *xe = uc_to_xe(uc); int ret; + xe_device_mem_access_get(xe); + /* * We call the GuC/HuC/GSC init functions even if GuC submission is off * to correctly move our tracking of the FW state to "disabled". */ - ret = xe_guc_init(&uc->guc); if (ret) goto err; @@ -52,7 +54,7 @@ int xe_uc_init(struct xe_uc *uc) goto err; if (!xe_device_uc_enabled(uc_to_xe(uc))) - return 0; + goto err; ret = xe_wopcm_init(&uc->wopcm); if (ret) @@ -66,9 +68,13 @@ int xe_uc_init(struct xe_uc *uc) if (ret) goto err; + xe_device_mem_access_put(xe); + return 0; err: + xe_device_mem_access_put(xe); + return ret; } |