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drm/i915: Add Guc/HuC firmware details to error state

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Include GuC and HuC firmware details in captured error state
to provide additional debug information. To reuse existing
uc firmware pretty printer, introduce new drm-printer variant
that works with our i915_error_state_buf output. Also update
uc firmware pretty printer to accept const input.

v2: don't rely on current caps (Chris)
    dump correct fw info (Michal)
v3: simplify capture of custom paths (Chris)
v4: improve 'why' comment (Joonas)
    trim output if no fw path (Michal)
    group code around uc error state (Michal)
v5: use error in cleanup_uc (Michal)

Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171026173657.49648-1-michal.wajdeczko@intel.com
[ickle: allow printing uc_fw after allocation failure]
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Michal Wajdeczko 2017-10-26 17:36:55 +00:00 committed by Chris Wilson
parent 1c5a907180
commit 7d41ef3479
4 changed files with 71 additions and 2 deletions
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5
drivers/gpu/drm/i915/i915_drv.h
View file

@ -913,6 +913,11 @@ struct i915_gpu_state {
struct intel_device_info device_info;
struct i915_params params;
struct i915_error_uc {
struct intel_uc_fw guc_fw;
struct intel_uc_fw huc_fw;
} uc;
/* Generic register state */
u32 eir;
u32 pgtbl_er;

64
drivers/gpu/drm/i915/i915_gpu_error.c
View file

@ -30,6 +30,8 @@
#include <generated/utsrelease.h>
#include <linux/stop_machine.h>
#include <linux/zlib.h>
#include <drm/drm_print.h>
#include "i915_drv.h"
static const char *engine_str(int engine)
@ -175,6 +177,21 @@ static void i915_error_puts(struct drm_i915_error_state_buf *e,
#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
#define err_puts(e, s) i915_error_puts(e, s)
static void __i915_printfn_error(struct drm_printer *p, struct va_format *vaf)
{
i915_error_vprintf(p->arg, vaf->fmt, *vaf->va);
}
static inline struct drm_printer
i915_error_printer(struct drm_i915_error_state_buf *e)
{
struct drm_printer p = {
.printfn = __i915_printfn_error,
.arg = e,
};
return p;
}
#ifdef CONFIG_DRM_I915_COMPRESS_ERROR
struct compress {
@ -589,6 +606,20 @@ static void err_print_pciid(struct drm_i915_error_state_buf *m,
pdev->subsystem_device);
}
static void err_print_uc(struct drm_i915_error_state_buf *m,
const struct i915_error_uc *error_uc)
{
struct drm_printer p = i915_error_printer(m);
const struct i915_gpu_state *error =
container_of(error_uc, typeof(*error), uc);
if (!error->device_info.has_guc)
return;
intel_uc_fw_dump(&error_uc->guc_fw, &p);
intel_uc_fw_dump(&error_uc->huc_fw, &p);
}
int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
const struct i915_gpu_state *error)
{
@ -773,6 +804,7 @@ int i915_error_state_to_str(struct drm_i915_error_state_buf *m,
err_print_capabilities(m, &error->device_info);
err_print_params(m, &error->params);
err_print_uc(m, &error->uc);
if (m->bytes == 0 && m->err)
return m->err;
@ -831,6 +863,14 @@ static __always_inline void free_param(const char *type, void *x)
kfree(*(void **)x);
}
static void cleanup_uc_state(struct i915_gpu_state *error)
{
struct i915_error_uc *error_uc = &error->uc;
kfree(error_uc->guc_fw.path);
kfree(error_uc->huc_fw.path);
}
void __i915_gpu_state_free(struct kref *error_ref)
{
struct i915_gpu_state *error =
@ -870,6 +910,8 @@ void __i915_gpu_state_free(struct kref *error_ref)
I915_PARAMS_FOR_EACH(FREE);
#undef FREE
cleanup_uc_state(error);
kfree(error);
}
@ -1559,6 +1601,26 @@ static void i915_capture_pinned_buffers(struct drm_i915_private *dev_priv,
error->pinned_bo = bo;
}
static void capture_uc_state(struct i915_gpu_state *error)
{
struct drm_i915_private *i915 = error->i915;
struct i915_error_uc *error_uc = &error->uc;
/* Capturing uC state won't be useful if there is no GuC */
if (!error->device_info.has_guc)
return;
error_uc->guc_fw = i915->guc.fw;
error_uc->huc_fw = i915->huc.fw;
/* Non-default firmware paths will be specified by the modparam.
* As modparams are generally accesible from the userspace make
* explicit copies of the firmware paths.
*/
error_uc->guc_fw.path = kstrdup(i915->guc.fw.path, GFP_ATOMIC);
error_uc->huc_fw.path = kstrdup(i915->huc.fw.path, GFP_ATOMIC);
}
static void i915_gem_capture_guc_log_buffer(struct drm_i915_private *dev_priv,
struct i915_gpu_state *error)
{
@ -1710,6 +1772,8 @@ static int capture(void *data)
I915_PARAMS_FOR_EACH(DUP);
#undef DUP
capture_uc_state(error);
i915_capture_gen_state(error->i915, error);
i915_capture_reg_state(error->i915, error);
i915_gem_record_fences(error->i915, error);

2
drivers/gpu/drm/i915/intel_uc_fw.c
View file

@ -299,7 +299,7 @@ void intel_uc_fw_fini(struct intel_uc_fw *uc_fw)
*
* Pretty printer for uC firmware.
*/
void intel_uc_fw_dump(struct intel_uc_fw *uc_fw, struct drm_printer *p)
void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p)
{
drm_printf(p, "%s firmware: %s\n",
intel_uc_fw_type_repr(uc_fw->type), uc_fw->path);

2
drivers/gpu/drm/i915/intel_uc_fw.h
View file

@ -116,6 +116,6 @@ int intel_uc_fw_upload(struct intel_uc_fw *uc_fw,
int (*xfer)(struct intel_uc_fw *uc_fw,
struct i915_vma *vma));
void intel_uc_fw_fini(struct intel_uc_fw *uc_fw);
void intel_uc_fw_dump(struct intel_uc_fw *uc_fw, struct drm_printer *p);
void intel_uc_fw_dump(const struct intel_uc_fw *uc_fw, struct drm_printer *p);
#endif