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drm/i915/uc: Move GuC error log to uc and release it on fini 

When we fail to load GuC and want to abort probe, we hit:

<7> [229.915779] i915 0000:00:02.0: [drm:intel_uc_init_hw [i915]] GuC initialization failed -6
<7> [229.915813] i915 0000:00:02.0: [drm:i915_gem_init_hw [i915]] Enabling uc failed (-6)
<4> [229.953354] ------------[ cut here ]------------
<4> [229.953355] WARN_ON(dev_priv->mm.shrink_count)
<4> [229.953406] WARNING: CPU: 9 PID: 3287 at drivers/gpu/drm/i915/i915_gem.c:1684 i915_gem_cleanup_early+0xfc/0x110 [i915]
<4> [229.953464] Call Trace:
<4> [229.953489]  i915_driver_late_release+0x19/0x60 [i915]
<4> [229.953514]  i915_driver_probe+0xb82/0x18a0 [i915]
<4> [229.953519]  ? __pm_runtime_resume+0x4f/0x80
<4> [229.953545]  i915_pci_probe+0x43/0x1b0 [i915]
...
<4> [229.962951] ------------[ cut here ]------------
<4> [229.962956] DEBUG_LOCKS_WARN_ON(lock->magic != lock)
<4> [229.962959] WARNING: CPU: 8 PID: 2395 at kernel/locking/mutex.c:912 __mutex_lock+0x750/0x9b0
<4> [229.963091] Call Trace:
<4> [229.963129]  ? i915_vma_destroy+0x86/0x350 [i915]
<4> [229.963166]  ? i915_vma_destroy+0x86/0x350 [i915]
<4> [229.963201]  i915_vma_destroy+0x86/0x350 [i915]
<4> [229.963236]  __i915_gem_free_objects+0xb8/0x510 [i915]
<4> [229.963270]  __i915_gem_free_work+0x5a/0x90 [i915]
<4> [229.963275]  process_one_work+0x245/0x610

as since commit 6f76098fe0 ("drm/i915/uc: Move uC early functions
inside the GT ones") we cleanup uc after gem.

Move captured GuC load error log to uc struct and release it
in intel_uc_fini() instead of intel_uc_driver_late_release()

Note that intel_uc_driver_late_release() is now empty, but
we can leave it as a placeholder for future code.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190802184055.31988-5-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2019-08-02 18:40:53 +00:00 committed by Chris Wilson
parent 3243bd096b
commit 32ff76e80c
4 changed files with 16 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/gt/uc/intel_guc.h
View File

@ -47,9 +47,6 @@ struct intel_guc {
struct intel_guc_log log;
struct intel_guc_ct ct;
/* Log snapshot if GuC errors during load */
struct drm_i915_gem_object *load_err_log;
/* intel_guc_recv interrupt related state */
spinlock_t irq_lock;
unsigned int msg_enabled_mask;

26
drivers/gpu/drm/i915/gt/uc/intel_uc.c
View File

@ -31,8 +31,6 @@
#include "i915_drv.h"
static void guc_free_load_err_log(struct intel_guc *guc);
/* Reset GuC providing us with fresh state for both GuC and HuC.
*/
static int __intel_uc_reset_hw(struct intel_uc *uc)
@ -103,7 +101,6 @@ void intel_uc_init_early(struct intel_uc *uc)
void intel_uc_driver_late_release(struct intel_uc *uc)
{
guc_free_load_err_log(&uc->guc);
}
/**
@ -118,21 +115,20 @@ void intel_uc_init_mmio(struct intel_uc *uc)
intel_guc_init_send_regs(&uc->guc);
}
static void guc_capture_load_err_log(struct intel_guc *guc)
static void __uc_capture_load_err_log(struct intel_uc *uc)
{
if (!guc->log.vma || !intel_guc_log_get_level(&guc->log))
return;
struct intel_guc *guc = &uc->guc;
if (!guc->load_err_log)
guc->load_err_log = i915_gem_object_get(guc->log.vma->obj);
return;
if (guc->log.vma && !uc->load_err_log)
uc->load_err_log = i915_gem_object_get(guc->log.vma->obj);
}
static void guc_free_load_err_log(struct intel_guc *guc)
static void __uc_free_load_err_log(struct intel_uc *uc)
{
if (guc->load_err_log)
i915_gem_object_put(guc->load_err_log);
struct drm_i915_gem_object *log = fetch_and_zero(&uc->load_err_log);
if (log)
i915_gem_object_put(log);
}
/*
@ -338,6 +334,8 @@ void intel_uc_fini(struct intel_uc *uc)
intel_huc_fini(&uc->huc);
intel_guc_fini(guc);
__uc_free_load_err_log(uc);
}
static int __uc_sanitize(struct intel_uc *uc)
@ -493,7 +491,7 @@ int intel_uc_init_hw(struct intel_uc *uc)
err_communication:
guc_disable_communication(guc);
err_log_capture:
guc_capture_load_err_log(guc);
__uc_capture_load_err_log(uc);
err_out:
__uc_sanitize(uc);

3
drivers/gpu/drm/i915/gt/uc/intel_uc.h
View File

@ -31,6 +31,9 @@
struct intel_uc {
struct intel_guc guc;
struct intel_huc huc;
/* Snapshot of GuC log from last failed load */
struct drm_i915_gem_object *load_err_log;
};
void intel_uc_init_early(struct intel_uc *uc);

2
drivers/gpu/drm/i915/i915_debugfs.c
View File

@ -2066,7 +2066,7 @@ static int i915_guc_log_dump(struct seq_file *m, void *data)
return -ENODEV;
if (dump_load_err)
obj = dev_priv->gt.uc.guc.load_err_log;
obj = dev_priv->gt.uc.load_err_log;
else if (dev_priv->gt.uc.guc.log.vma)
obj = dev_priv->gt.uc.guc.log.vma->obj;