[PATCH v4] drm/i915/gt: move remaining debugfs interfaces into gt

From: Andi Shyti andi.shyti@intel.com

The following interfaces:

i915_wedged i915_forcewake_user

are dependent on gt values. Put them inside gt/ and drop the "i915_" prefix name. This would be the new structure:

dri/0/gt | +-- forcewake_user | -- reset

For backwards compatibility with existing igt (and the slight semantic difference between operating on the i915 abi entry points and the deep gt info):

dri/0 | +-- i915_wedged | -- i915_forcewake_user

remain at the top level.

Signed-off-by: Andi Shyti andi.shyti@intel.com Cc: Tvrtko Ursulin tvrtko.ursulin@intel.com Cc: Chris Wilson chris@chris-wilson.co.uk --- Changelog: ---------- v3 -> v4: https://patchwork.freedesktop.org/patch/458225/ * remove the unnecessary interrupt_info_show() information. They were already removed here by Chris:

cf977e18610e6 ("drm/i915/gem: Spring clean debugfs")

v2 -> v3: https://patchwork.freedesktop.org/patch/458108/ * keep the original interfaces as they were (thanks Chris) but implement the functionality inside the gt. The upper level files will call the gt functions (thanks Lucas).

v1 -> v2: https://patchwork.freedesktop.org/patch/456652/ * keep the original interfaces intact (thanks Chris).

drivers/gpu/drm/i915/gt/intel_gt_debugfs.c | 42 ++++++++++++++++++ drivers/gpu/drm/i915/gt/intel_gt_debugfs.h | 4 ++ drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c | 41 ++++++++++++++++++ drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.h | 4 ++ drivers/gpu/drm/i915/i915_debugfs.c | 43 +++---------------- 5 files changed, 98 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c b/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c index 1fe19ccd27942..f712670993b68 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_debugfs.c @@ -13,6 +13,46 @@ #include "pxp/intel_pxp_debugfs.h" #include "uc/intel_uc_debugfs.h"

+int reset_show(void *data, u64 *val) +{ + struct intel_gt *gt = data; + int ret = intel_gt_terminally_wedged(gt); + + switch (ret) { + case -EIO: + *val = 1; + return 0; + case 0: + *val = 0; + return 0; + default: + return ret; + } +} + +int reset_store(void *data, u64 val) +{ + struct intel_gt *gt = data; + + /* Flush any previous reset before applying for a new one */ + wait_event(gt->reset.queue, + !test_bit(I915_RESET_BACKOFF, &gt->reset.flags)); + + intel_gt_handle_error(gt, val, I915_ERROR_CAPTURE, + "Manually reset engine mask to %llx", val); + return 0; +} +DEFINE_SIMPLE_ATTRIBUTE(reset_fops, reset_show, reset_store, "%llu\n"); + +static void gt_debugfs_register(struct intel_gt *gt, struct dentry *root) +{ + static const struct intel_gt_debugfs_file files[] = { + { "reset", &reset_fops, NULL }, + }; + + intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), gt); +} + void intel_gt_debugfs_register(struct intel_gt *gt) { struct dentry *root; @@ -24,6 +64,8 @@ void intel_gt_debugfs_register(struct intel_gt *gt) if (IS_ERR(root)) return;

+ gt_debugfs_register(gt, root); + intel_gt_engines_debugfs_register(gt, root); intel_gt_pm_debugfs_register(gt, root); intel_sseu_debugfs_register(gt, root); diff --git a/drivers/gpu/drm/i915/gt/intel_gt_debugfs.h b/drivers/gpu/drm/i915/gt/intel_gt_debugfs.h index 8b6fca09897ce..6bc4f044c23f3 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_debugfs.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_debugfs.h @@ -35,4 +35,8 @@ void intel_gt_debugfs_register_files(struct dentry *root, const struct intel_gt_debugfs_file *files, unsigned long count, void *data);

+/* functions that need to be accessed by the upper level non-gt interfaces */ +int reset_show(void *data, u64 *val); +int reset_store(void *data, u64 val); + #endif /* INTEL_GT_DEBUGFS_H */ diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c index 5f84ad6026423..712c91d588eb3 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c @@ -19,6 +19,46 @@ #include "intel_sideband.h" #include "intel_uncore.h"

+int __forcewake_user_open(struct intel_gt *gt) +{ + atomic_inc(&gt->user_wakeref); + intel_gt_pm_get(gt); + if (GRAPHICS_VER(gt->i915) >= 6) + intel_uncore_forcewake_user_get(gt->uncore); + + return 0; +} + +int __forcewake_user_release(struct intel_gt *gt) +{ + if (GRAPHICS_VER(gt->i915) >= 6) + intel_uncore_forcewake_user_put(gt->uncore); + intel_gt_pm_put(gt); + atomic_dec(&gt->user_wakeref); + + return 0; +} + +static int forcewake_user_open(struct inode *inode, struct file *file) +{ + struct intel_gt *gt = inode->i_private; + + return __forcewake_user_open(gt); +} + +static int forcewake_user_release(struct inode *inode, struct file *file) +{ + struct intel_gt *gt = inode->i_private; + + return __forcewake_user_release(gt); +} + +static const struct file_operations forcewake_user_fops = { + .owner = THIS_MODULE, + .open = forcewake_user_open, + .release = forcewake_user_release, +}; + static int fw_domains_show(struct seq_file *m, void *data) { struct intel_gt *gt = m->private; @@ -627,6 +667,7 @@ void intel_gt_pm_debugfs_register(struct intel_gt *gt, struct dentry *root) { "drpc", &drpc_fops, NULL }, { "frequency", &frequency_fops, NULL }, { "forcewake", &fw_domains_fops, NULL }, + { "forcewake_user", &forcewake_user_fops, NULL}, { "llc", &llc_fops, llc_eval }, { "rps_boost", &rps_boost_fops, rps_eval }, }; diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.h b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.h index 2b824289582be..fe306412b996d 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.h @@ -13,4 +13,8 @@ struct drm_printer; void intel_gt_pm_debugfs_register(struct intel_gt *gt, struct dentry *root); void intel_gt_pm_frequency_dump(struct intel_gt *gt, struct drm_printer *m);

+/* functions that need to be accessed by the upper level non-gt interfaces */ +int __forcewake_user_open(struct intel_gt *gt); +int __forcewake_user_release(struct intel_gt *gt); + #endif /* INTEL_GT_PM_DEBUGFS_H */ diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index fdbd46ff59e0e..fd7f5bd5f304c 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -35,6 +35,7 @@ #include "gt/intel_gt.h" #include "gt/intel_gt_buffer_pool.h" #include "gt/intel_gt_clock_utils.h" +#include "gt/intel_gt_debugfs.h" #include "gt/intel_gt_pm.h" #include "gt/intel_gt_pm_debugfs.h" #include "gt/intel_gt_requests.h" @@ -554,36 +555,18 @@ static int i915_wa_registers(struct seq_file *m, void *unused) return 0; }

-static int -i915_wedged_get(void *data, u64 *val) +static int i915_wedged_get(void *data, u64 *val) { struct drm_i915_private *i915 = data; - int ret = intel_gt_terminally_wedged(&i915->gt);

- switch (ret) { - case -EIO: - *val = 1; - return 0; - case 0: - *val = 0; - return 0; - default: - return ret; - } + return reset_show(&i915->gt, val); }

-static int -i915_wedged_set(void *data, u64 val) +static int i915_wedged_set(void *data, u64 val) { struct drm_i915_private *i915 = data;

- /* Flush any previous reset before applying for a new one */ - wait_event(i915->gt.reset.queue, - !test_bit(I915_RESET_BACKOFF, &i915->gt.reset.flags)); - - intel_gt_handle_error(&i915->gt, val, I915_ERROR_CAPTURE, - "Manually set wedged engine mask = %llx", val); - return 0; + return reset_store(&i915->gt, val); }

DEFINE_SIMPLE_ATTRIBUTE(i915_wedged_fops, @@ -728,27 +711,15 @@ static int i915_sseu_status(struct seq_file *m, void *unused) static int i915_forcewake_open(struct inode *inode, struct file *file) { struct drm_i915_private *i915 = inode->i_private; - struct intel_gt *gt = &i915->gt; - - atomic_inc(&gt->user_wakeref); - intel_gt_pm_get(gt); - if (GRAPHICS_VER(i915) >= 6) - intel_uncore_forcewake_user_get(gt->uncore);

- return 0; + return __forcewake_user_open(&i915->gt); }

static int i915_forcewake_release(struct inode *inode, struct file *file) { struct drm_i915_private *i915 = inode->i_private; - struct intel_gt *gt = &i915->gt;

- if (GRAPHICS_VER(i915) >= 6) - intel_uncore_forcewake_user_put(&i915->uncore); - intel_gt_pm_put(gt); - atomic_dec(&gt->user_wakeref); - - return 0; + return __forcewake_user_release(&i915->gt); }

static const struct file_operations i915_forcewake_fops = {