Commit 91be6115 authored by Vinay Belgaumkar's avatar Vinay Belgaumkar
Browse files

drm/xe: Add forcewake status to powergate_info 



Dump forcewake status and ref counts for all domains as part
of this debugfs. This is the sample output from gt1-

$ cat /sys/kernel/debug/dri//0/gt1/powergate_info
Media Power Gating Enabled: yes
Media Slice0 Power Gate Status: down
GSC Power Gate Status: down
GT.ref_count=0, GT.forcewake=0x10000
VDBox0.ref_count=0, VDBox0.forcewake=0x10000
VEBox0.ref_count=0, VEBox0.forcewake=0x10000
GSC.ref_count=0, GSC.forcewake=0x10000

v2: Fix checkpatch issues

Reviewed-by: default avatarBadal Nilawar <badal.nilawar@intel.com>
Signed-off-by: default avatarVinay <Belgaumkar&lt;vinay.belgaumkar@intel.com>
Link: https://patch.msgid.link/20260204190314.2904009-3-vinay.belgaumkar@intel.com
parent 2ea05b4b

drivers/gpu/drm/xe/xe_force_wake.c

+40 −6
Original line number Diff line number Diff line
@@ -148,12 +148,6 @@ static int domain_sleep_wait(struct xe_gt *gt, 
	return __domain_wait(gt, domain, false);

}



#define for_each_fw_domain_masked(domain__, mask__, fw__, tmp__) \

	for (tmp__ = (mask__); tmp__; tmp__ &= ~BIT(ffs(tmp__) - 1)) \

		for_each_if((domain__ = ((fw__)->domains + \

					 (ffs(tmp__) - 1))) && \

					 domain__->reg_ctl.addr)



/**

 * xe_force_wake_get() : Increase the domain refcount

 * @fw: struct xe_force_wake
@@ -266,3 +260,43 @@ void xe_force_wake_put(struct xe_force_wake *fw, unsigned int fw_ref) 
	xe_gt_WARN(gt, ack_fail, "Forcewake domain%s %#x failed to acknowledge sleep request\n",

		   str_plural(hweight_long(ack_fail)), ack_fail);

}



const char *xe_force_wake_domain_to_str(enum xe_force_wake_domain_id id)

{

	switch (id) {

	case XE_FW_DOMAIN_ID_GT:

		return "GT";

	case XE_FW_DOMAIN_ID_RENDER:

		return "Render";

	case XE_FW_DOMAIN_ID_MEDIA:

		return "Media";

	case XE_FW_DOMAIN_ID_MEDIA_VDBOX0:

		return "VDBox0";

	case XE_FW_DOMAIN_ID_MEDIA_VDBOX1:

		return "VDBox1";

	case XE_FW_DOMAIN_ID_MEDIA_VDBOX2:

		return "VDBox2";

	case XE_FW_DOMAIN_ID_MEDIA_VDBOX3:

		return "VDBox3";

	case XE_FW_DOMAIN_ID_MEDIA_VDBOX4:

		return "VDBox4";

	case XE_FW_DOMAIN_ID_MEDIA_VDBOX5:

		return "VDBox5";

	case XE_FW_DOMAIN_ID_MEDIA_VDBOX6:

		return "VDBox6";

	case XE_FW_DOMAIN_ID_MEDIA_VDBOX7:

		return "VDBox7";

	case XE_FW_DOMAIN_ID_MEDIA_VEBOX0:

		return "VEBox0";

	case XE_FW_DOMAIN_ID_MEDIA_VEBOX1:

		return "VEBox1";

	case XE_FW_DOMAIN_ID_MEDIA_VEBOX2:

		return "VEBox2";

	case XE_FW_DOMAIN_ID_MEDIA_VEBOX3:

		return "VEBox3";

	case XE_FW_DOMAIN_ID_GSC:

		return "GSC";

	default:

		return "Unknown";

	}

}

drivers/gpu/drm/xe/xe_force_wake.h

+11 −0
Original line number Diff line number Diff line
@@ -19,6 +19,17 @@ unsigned int __must_check xe_force_wake_get(struct xe_force_wake *fw, 
					    enum xe_force_wake_domains domains);

void xe_force_wake_put(struct xe_force_wake *fw, unsigned int fw_ref);



const char *xe_force_wake_domain_to_str(enum xe_force_wake_domain_id id);



#define for_each_fw_domain_masked(domain__, mask__, fw__, tmp__) \

	for (tmp__ = (mask__); tmp__; tmp__ &= ~BIT(ffs(tmp__) - 1)) \

		for_each_if(((domain__) = ((fw__)->domains + \

					 (ffs(tmp__) - 1))) && \

					 (domain__)->reg_ctl.addr)



#define for_each_fw_domain(domain__, fw__, tmp__) \

	for_each_fw_domain_masked((domain__), (fw__)->initialized_domains, (fw__), (tmp__))



static inline int

xe_force_wake_ref(struct xe_force_wake *fw,

		  enum xe_force_wake_domains domain)

drivers/gpu/drm/xe/xe_gt_idle.c

+20 −0
Original line number Diff line number Diff line
@@ -168,6 +168,24 @@ void xe_gt_idle_disable_pg(struct xe_gt *gt) 
	xe_mmio_write32(&gt->mmio, POWERGATE_ENABLE, gtidle->powergate_enable);

}



static void force_wake_domains_show(struct xe_gt *gt, struct drm_printer *p)

{

	struct xe_force_wake_domain *domain;

	struct xe_force_wake *fw = gt_to_fw(gt);

	unsigned int tmp;

	unsigned long flags;



	spin_lock_irqsave(&fw->lock, flags);

	for_each_fw_domain(domain, fw, tmp) {

		drm_printf(p, "%s.ref_count=%u, %s.fwake=0x%x\n",

			   xe_force_wake_domain_to_str(domain->id),

			   READ_ONCE(domain->ref),

			   xe_force_wake_domain_to_str(domain->id),

			   xe_mmio_read32(&gt->mmio, domain->reg_ctl));

	}

	spin_unlock_irqrestore(&fw->lock, flags);

}



/**

 * xe_gt_idle_pg_print - Xe powergating info

 * @gt: GT object
@@ -259,6 +277,8 @@ int xe_gt_idle_pg_print(struct xe_gt *gt, struct drm_printer *p) 
			   str_up_down(pg_status & GSC_AWAKE_STATUS));

	}



	force_wake_domains_show(gt, p);



	return 0;

}