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drm/xe/vf: Rebase HWSP of all contexts after migration

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All contexts require an update due to GGTT range shift, as that
affects their HWSP.

The HW status page of a context contains GGTT references, which
need to be shifted to a new range (or re-computed using the
previously updated vma nodes). The references include ring start
address and indirect state address.

v2: move some functions to better matched files
v3: Add missing kerneldocs
v4: Style fix

Signed-off-by: Tomasz Lis <tomasz.lis@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Acked-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Reviewed-by: Michal Winiarski <michal.winiarski@intel.com>
Link: https://lore.kernel.org/r/20250802031045.1127138-5-tomasz.lis@intel.com
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
This commit is contained in:
Tomasz Lis
2025-08-02 05:10:41 +02:00
committed by Michał Winiarski
parent a0840b1ce9
commit b46ef76673
7 changed files with 52 additions and 0 deletions
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17
drivers/gpu/drm/xe/xe_lrc.c
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@@ -1439,6 +1439,23 @@ void xe_lrc_destroy(struct kref *ref)
kfree(lrc);
}
/**
* xe_lrc_update_hwctx_regs_with_address - Re-compute GGTT references within given LRC.
* @lrc: the &xe_lrc struct instance
*/
void xe_lrc_update_hwctx_regs_with_address(struct xe_lrc *lrc)
{
if (xe_lrc_has_indirect_ring_state(lrc)) {
xe_lrc_write_ctx_reg(lrc, CTX_INDIRECT_RING_STATE,
__xe_lrc_indirect_ring_ggtt_addr(lrc));
xe_lrc_write_indirect_ctx_reg(lrc, INDIRECT_CTX_RING_START,
__xe_lrc_ring_ggtt_addr(lrc));
} else {
xe_lrc_write_ctx_reg(lrc, CTX_RING_START, __xe_lrc_ring_ggtt_addr(lrc));
}
}
void xe_lrc_set_ring_tail(struct xe_lrc *lrc, u32 tail)
{
if (xe_lrc_has_indirect_ring_state(lrc))