diff mbox series

[V3] drm/i915/gt: Hold RPM wakelock during PXP suspend

Message ID 20211111124208.3550952-1-tejaskumarx.surendrakumar.upadhyay@intel.com (mailing list archive)
State New, archived
Headers show
Series [V3] drm/i915/gt: Hold RPM wakelock during PXP suspend | expand

Commit Message

Tejas Upadhyay Nov. 11, 2021, 12:42 p.m. UTC 
selftest --r live shows failure in suspend tests when
RPM wakelock is not acquired during suspend.

This changes addresses below error :
<4> [154.177535] RPM wakelock ref not held during HW access
<4> [154.177575] WARNING: CPU: 4 PID: 5772 at
drivers/gpu/drm/i915/intel_runtime_pm.h:113
fwtable_write32+0x240/0x320 [i915]
<4> [154.177974] Modules linked in: i915(+) vgem drm_shmem_helper
fuse snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic
ledtrig_audio mei_hdcp mei_pxp x86_pkg_temp_thermal coretemp
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_intel_dspcfg
snd_hda_codec snd_hwdep igc snd_hda_core ttm mei_me ptp
snd_pcm prime_numbers mei i2c_i801 pps_core i2c_smbus intel_lpss_pci
btusb btrtl btbcm btintel bluetooth ecdh_generic ecc [last unloaded: i915]
<4> [154.178143] CPU: 4 PID: 5772 Comm: i915_selftest Tainted: G
U            5.15.0-rc6-CI-Patchwork_21432+ #1
<4> [154.178154] Hardware name: ASUS System Product Name/TUF GAMING
Z590-PLUS WIFI, BIOS 0811 04/06/2021
<4> [154.178160] RIP: 0010:fwtable_write32+0x240/0x320 [i915]
<4> [154.178604] Code: 15 7b e1 0f 0b e9 34 fe ff ff 80 3d a9 89 31
00 00 0f 85 31 fe ff ff 48 c7 c7 88 9e 4f a0 c6 05 95 89 31 00 01 e8
c0 15 7b e1 <0f> 0b e9 17 fe ff ff 8b 05 0f 83 58 e2 85 c0 0f 85 8d
00 00 00 48
<4> [154.178614] RSP: 0018:ffffc900016279f0 EFLAGS: 00010286
<4> [154.178626] RAX: 0000000000000000 RBX: ffff888204fe0ee0
RCX: 0000000000000001
<4> [154.178634] RDX: 0000000080000001 RSI: ffffffff823142b5
RDI: 00000000ffffffff
<4> [154.178641] RBP: 00000000000320f0 R08: 0000000000000000
R09: c0000000ffffcd5a
<4> [154.178647] R10: 00000000000f8c90 R11: ffffc90001627808
R12: 0000000000000000
<4> [154.178654] R13: 0000000040000000 R14: ffffffffa04d12e0
R15: 0000000000000000
<4> [154.178660] FS:  00007f7390aa4c00(0000) GS:ffff88844f000000(0000)
knlGS:0000000000000000
<4> [154.178669] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4> [154.178675] CR2: 000055bc40595028 CR3: 0000000204474005
CR4: 0000000000770ee0
<4> [154.178682] PKRU: 55555554
<4> [154.178687] Call Trace:
<4> [154.178706]  intel_pxp_fini_hw+0x23/0x30 [i915]
<4> [154.179284]  intel_pxp_suspend+0x1f/0x30 [i915]
<4> [154.179807]  live_gt_resume+0x5b/0x90 [i915]

Changes since V2 :
	- Open-code intel_pxp_runtime_suspend - Daniele
	- Remove boolean in intel_pxp_runtime_preapre - Daniele
Changes since V1 :
	- split the HW access parts in gt_suspend_late - Daniele
	- Remove default PXP configs

Signed-off-by: Tejas Upadhyay <tejaskumarx.surendrakumar.upadhyay@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_gt_pm.c   |  7 +++--
 drivers/gpu/drm/i915/pxp/intel_pxp_pm.c | 37 +++++++++++++++++--------
 drivers/gpu/drm/i915/pxp/intel_pxp_pm.h | 19 +++++++++++--
 3 files changed, 46 insertions(+), 17 deletions(-)

Comments

kernel test robot Nov. 12, 2021, 10:55 a.m. UTC | #1 
Hi Tejas,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on drm-tip/drm-tip next-20211112]
[cannot apply to v5.15]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Tejas-Upadhyay/drm-i915-gt-Hold-RPM-wakelock-during-PXP-suspend/20211111-204949
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-defconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/c134397c55fb3639fdcea780a83fd5f5402c93de
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Tejas-Upadhyay/drm-i915-gt-Hold-RPM-wakelock-during-PXP-suspend/20211111-204949
        git checkout c134397c55fb3639fdcea780a83fd5f5402c93de
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/gpu/drm/i915/gt/intel_gt_pm.c: In function 'intel_gt_suspend_prepare':
>> drivers/gpu/drm/i915/gt/intel_gt_pm.c:304:2: error: too few arguments to function 'intel_pxp_suspend_prepare'
     304 |  intel_pxp_suspend_prepare(&gt->pxp);
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from drivers/gpu/drm/i915/gt/intel_gt_pm.c:21:
   drivers/gpu/drm/i915/pxp/intel_pxp_pm.h:17:20: note: declared here
      17 | static inline void intel_pxp_suspend_prepare(struct intel_pxp *pxp, bool runtime)
         |                    ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +/intel_pxp_suspend_prepare +304 drivers/gpu/drm/i915/gt/intel_gt_pm.c

   298	
   299	void intel_gt_suspend_prepare(struct intel_gt *gt)
   300	{
   301		user_forcewake(gt, true);
   302		wait_for_suspend(gt);
   303	
 > 304		intel_pxp_suspend_prepare(&gt->pxp);
   305	}
   306	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
index b4a8594bc46c..c0fa41e4c803 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
@@ -303,7 +303,7 @@  void intel_gt_suspend_prepare(struct intel_gt *gt)
 	user_forcewake(gt, true);
 	wait_for_suspend(gt);
 
-	intel_pxp_suspend(&gt->pxp, false);
+	intel_pxp_suspend_prepare(&gt->pxp);
 }
 
 static suspend_state_t pm_suspend_target(void)
@@ -328,6 +328,7 @@  void intel_gt_suspend_late(struct intel_gt *gt)
 	GEM_BUG_ON(gt->awake);
 
 	intel_uc_suspend(&gt->uc);
+	intel_pxp_suspend(&gt->pxp);
 
 	/*
 	 * On disabling the device, we want to turn off HW access to memory
@@ -355,7 +356,7 @@  void intel_gt_suspend_late(struct intel_gt *gt)
 
 void intel_gt_runtime_suspend(struct intel_gt *gt)
 {
-	intel_pxp_suspend(&gt->pxp, true);
+	intel_pxp_runtime_suspend(&gt->pxp);
 	intel_uc_runtime_suspend(&gt->uc);
 
 	GT_TRACE(gt, "\n");
@@ -373,7 +374,7 @@  int intel_gt_runtime_resume(struct intel_gt *gt)
 	if (ret)
 		return ret;
 
-	intel_pxp_resume(&gt->pxp);
+	intel_pxp_runtime_resume(&gt->pxp);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
index 23fd86de5a24..6a7d4e2ee138 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.c
@@ -7,26 +7,29 @@ 
 #include "intel_pxp_irq.h"
 #include "intel_pxp_pm.h"
 #include "intel_pxp_session.h"
+#include "i915_drv.h"
 
-void intel_pxp_suspend(struct intel_pxp *pxp, bool runtime)
+void intel_pxp_suspend_prepare(struct intel_pxp *pxp)
 {
 	if (!intel_pxp_is_enabled(pxp))
 		return;
 
 	pxp->arb_is_valid = false;
 
-	/*
-	 * Contexts using protected objects keep a runtime PM reference, so we
-	 * can only runtime suspend when all of them have been either closed
-	 * or banned. Therefore, there is no need to invalidate in that
-	 * scenario.
-	 */
-	if (!runtime)
-		intel_pxp_invalidate(pxp);
+	intel_pxp_invalidate(pxp);
+}
 
-	intel_pxp_fini_hw(pxp);
+void intel_pxp_suspend(struct intel_pxp *pxp)
+{
+	intel_wakeref_t wakeref;
 
-	pxp->hw_state_invalidated = false;
+	if (!intel_pxp_is_enabled(pxp))
+		return;
+
+	with_intel_runtime_pm(&pxp_to_gt(pxp)->i915->runtime_pm, wakeref) {
+		intel_pxp_fini_hw(pxp);
+		pxp->hw_state_invalidated = false;
+	}
 }
 
 void intel_pxp_resume(struct intel_pxp *pxp)
@@ -44,3 +47,15 @@  void intel_pxp_resume(struct intel_pxp *pxp)
 
 	intel_pxp_init_hw(pxp);
 }
+
+void intel_pxp_runtime_suspend(struct intel_pxp *pxp)
+{
+	if (!intel_pxp_is_enabled(pxp))
+		return;
+
+	pxp->arb_is_valid = false;
+
+	intel_pxp_fini_hw(pxp);
+
+	pxp->hw_state_invalidated = false;
+}
diff --git a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.h b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.h
index c89e97a0c3d0..c4e27f358a71 100644
--- a/drivers/gpu/drm/i915/pxp/intel_pxp_pm.h
+++ b/drivers/gpu/drm/i915/pxp/intel_pxp_pm.h
@@ -9,16 +9,29 @@ 
 #include "intel_pxp_types.h"
 
 #ifdef CONFIG_DRM_I915_PXP
-void intel_pxp_suspend(struct intel_pxp *pxp, bool runtime);
+void intel_pxp_suspend_prepare(struct intel_pxp *pxp);
+void intel_pxp_suspend(struct intel_pxp *pxp);
 void intel_pxp_resume(struct intel_pxp *pxp);
+void intel_pxp_runtime_suspend(struct intel_pxp *pxp);
 #else
-static inline void intel_pxp_suspend(struct intel_pxp *pxp, bool runtime)
+static inline void intel_pxp_suspend_prepare(struct intel_pxp *pxp, bool runtime)
+{
+}
+
+static inline void intel_pxp_suspend(struct intel_pxp *pxp)
 {
 }
 
 static inline void intel_pxp_resume(struct intel_pxp *pxp)
 {
 }
-#endif
 
+static inline void intel_pxp_runtime_suspend(struct intel_pxp *pxp)
+{
+}
+#endif
+static inline void intel_pxp_runtime_resume(struct intel_pxp *pxp)
+{
+	intel_pxp_resume(pxp);
+}
 #endif /* __INTEL_PXP_PM_H__ */