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drm/xe/pf: Add functions to configure VF scheduling priority

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Add functions to configure PF or VF scheduling priority using the
VF_CFG_SCHED_PRIORITY KLV.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Lukasz Laguna <lukasz.laguna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241106151301.2079-4-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko
2024-11-06 16:12:59 +01:00
parent 5a814e3ade
commit 7dbed0fdb1
3 changed files with 81 additions and 0 deletions
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76
drivers/gpu/drm/xe/xe_gt_sriov_pf_config.c
View File

@@ -207,6 +207,11 @@ static int pf_push_vf_cfg_preempt_timeout(struct xe_gt *gt, unsigned int vfid, u
return pf_push_vf_cfg_u32(gt, vfid, GUC_KLV_VF_CFG_PREEMPT_TIMEOUT_KEY, *preempt_timeout);
}
static int pf_push_vf_cfg_sched_priority(struct xe_gt *gt, unsigned int vfid, u32 priority)
{
return pf_push_vf_cfg_u32(gt, vfid, GUC_KLV_VF_CFG_SCHED_PRIORITY_KEY, priority);
}
static int pf_push_vf_cfg_lmem(struct xe_gt *gt, unsigned int vfid, u64 size)
{
return pf_push_vf_cfg_u64(gt, vfid, GUC_KLV_VF_CFG_LMEM_SIZE_KEY, size);
@@ -1767,6 +1772,77 @@ u32 xe_gt_sriov_pf_config_get_preempt_timeout(struct xe_gt *gt, unsigned int vfi
return preempt_timeout;
}
static const char *sched_priority_unit(u32 priority)
{
return priority == GUC_SCHED_PRIORITY_LOW ? "(low)" :
priority == GUC_SCHED_PRIORITY_NORMAL ? "(normal)" :
priority == GUC_SCHED_PRIORITY_HIGH ? "(high)" :
"(?)";
}
static int pf_provision_sched_priority(struct xe_gt *gt, unsigned int vfid, u32 priority)
{
struct xe_gt_sriov_config *config = pf_pick_vf_config(gt, vfid);
int err;
err = pf_push_vf_cfg_sched_priority(gt, vfid, priority);
if (unlikely(err))
return err;
config->sched_priority = priority;
return 0;
}
static int pf_get_sched_priority(struct xe_gt *gt, unsigned int vfid)
{
struct xe_gt_sriov_config *config = pf_pick_vf_config(gt, vfid);
return config->sched_priority;
}
/**
* xe_gt_sriov_pf_config_set_sched_priority() - Configure scheduling priority.
* @gt: the &xe_gt
* @vfid: the VF identifier
* @priority: requested scheduling priority
*
* This function can only be called on PF.
*
* Return: 0 on success or a negative error code on failure.
*/
int xe_gt_sriov_pf_config_set_sched_priority(struct xe_gt *gt, unsigned int vfid, u32 priority)
{
int err;
mutex_lock(xe_gt_sriov_pf_master_mutex(gt));
err = pf_provision_sched_priority(gt, vfid, priority);
mutex_unlock(xe_gt_sriov_pf_master_mutex(gt));
return pf_config_set_u32_done(gt, vfid, priority,
xe_gt_sriov_pf_config_get_sched_priority(gt, vfid),
"scheduling priority", sched_priority_unit, err);
}
/**
* xe_gt_sriov_pf_config_get_sched_priority - Get VF's scheduling priority.
* @gt: the &xe_gt
* @vfid: the VF identifier
*
* This function can only be called on PF.
*
* Return: VF's (or PF's) scheduling priority.
*/
u32 xe_gt_sriov_pf_config_get_sched_priority(struct xe_gt *gt, unsigned int vfid)
{
u32 priority;
mutex_lock(xe_gt_sriov_pf_master_mutex(gt));
priority = pf_get_sched_priority(gt, vfid);
mutex_unlock(xe_gt_sriov_pf_master_mutex(gt));
return priority;
}
static void pf_reset_config_sched(struct xe_gt *gt, struct xe_gt_sriov_config *config)
{
lockdep_assert_held(xe_gt_sriov_pf_master_mutex(gt));

3
drivers/gpu/drm/xe/xe_gt_sriov_pf_config.h
View File

@@ -44,6 +44,9 @@ u32 xe_gt_sriov_pf_config_get_preempt_timeout(struct xe_gt *gt, unsigned int vfi
int xe_gt_sriov_pf_config_set_preempt_timeout(struct xe_gt *gt, unsigned int vfid,
u32 preempt_timeout);
u32 xe_gt_sriov_pf_config_get_sched_priority(struct xe_gt *gt, unsigned int vfid);
int xe_gt_sriov_pf_config_set_sched_priority(struct xe_gt *gt, unsigned int vfid, u32 priority);
u32 xe_gt_sriov_pf_config_get_threshold(struct xe_gt *gt, unsigned int vfid,
enum xe_guc_klv_threshold_index index);
int xe_gt_sriov_pf_config_set_threshold(struct xe_gt *gt, unsigned int vfid,

2
drivers/gpu/drm/xe/xe_gt_sriov_pf_config_types.h
View File

@@ -33,6 +33,8 @@ struct xe_gt_sriov_config {
u32 exec_quantum;
/** @preempt_timeout: preemption timeout in microseconds. */
u32 preempt_timeout;
/** @sched_priority: scheduling priority. */
u32 sched_priority;
/** @thresholds: GuC thresholds for adverse events notifications. */
u32 thresholds[XE_GUC_KLV_NUM_THRESHOLDS];
};