On 7 July 2017 at 18:08, Lionel Landwerlin
<lionel.g.landwerlin@xxxxxxxxx> wrote:
> From: Matthew Auld <matthew.auld@xxxxxxxxx>
>
> The motivation behind this new interface is expose at runtime the
> creation of new OA configs which can be used as part of the i915 perf
> open interface. This will enable the kernel to learn new configs which
> may be experimental, or otherwise not part of the core set currently
> available through the i915 perf interface.
>
> This will relieve the kernel from holding all the possible configs, so
> we can leave only the test configs here.
>
> Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
> Signed-off-by: Andrzej Datczuk <andrzej.datczuk@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_drv.c | 2 +
> drivers/gpu/drm/i915/i915_drv.h | 30 +++
> drivers/gpu/drm/i915/i915_perf.c | 391 ++++++++++++++++++++++++++++++++++++++-
> drivers/gpu/drm/i915/i915_reg.h | 2 +
> include/uapi/drm/i915_drm.h | 21 +++
> 5 files changed, 441 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index d310d8245dca..a3d339670ec1 100644
> --- a/drivers/gpu/drm/i915/i915_drv.c
> +++ b/drivers/gpu/drm/i915/i915_drv.c
> @@ -2730,6 +2730,8 @@ static const struct drm_ioctl_desc i915_ioctls[] = {
> DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_GETPARAM, i915_gem_context_getparam_ioctl, DRM_RENDER_ALLOW),
> DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_SETPARAM, i915_gem_context_setparam_ioctl, DRM_RENDER_ALLOW),
> DRM_IOCTL_DEF_DRV(I915_PERF_OPEN, i915_perf_open_ioctl, DRM_RENDER_ALLOW),
> + DRM_IOCTL_DEF_DRV(I915_PERF_ADD_CONFIG, i915_perf_add_config_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
> + DRM_IOCTL_DEF_DRV(I915_PERF_REMOVE_CONFIG, i915_perf_remove_config_ioctl, DRM_UNLOCKED|DRM_RENDER_ALLOW),
> };
>
> static struct drm_driver driver = {
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index 81cd21ecfa7d..ce733c2db963 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -2009,6 +2009,11 @@ struct i915_perf_stream {
> * type of configured stream.
> */
> const struct i915_perf_stream_ops *ops;
> +
> + /**
> + * @metrics_set: The ID of the config used by the stream.
> + */
> + int metrics_set;
> };
>
> /**
> @@ -2016,6 +2021,25 @@ struct i915_perf_stream {
> */
> struct i915_oa_ops {
> /**
> + * @is_valid_b_counter_reg: Validates register's address for
> + * programming boolean counters for a particular platform.
> + */
> + bool (*is_valid_b_counter_reg)(struct drm_i915_private *dev_priv,
> + u32 addr);
> +
> + /**
> + * @is_valid_mux_reg: Validates register's address for programming mux
> + * for a particular platform.
> + */
> + bool (*is_valid_mux_reg)(struct drm_i915_private *dev_priv, u32 addr);
> +
> + /**
> + * @is_valid_flex_reg: Validates register's address for programming
> + * flex EU filtering for a particular platform.
> + */
> + bool (*is_valid_flex_reg)(struct drm_i915_private *dev_priv, u32 addr);
> +
> + /**
> * @init_oa_buffer: Resets the head and tail pointers of the
> * circular buffer for periodic OA reports.
> *
> @@ -2413,6 +2437,8 @@ struct drm_i915_private {
> struct mutex lock;
> struct list_head streams;
>
> + struct idr metrics_idr;
> +
> struct {
> struct i915_perf_stream *exclusive_stream;
>
> @@ -3589,6 +3615,10 @@ i915_gem_context_lookup_timeline(struct i915_gem_context *ctx,
>
> int i915_perf_open_ioctl(struct drm_device *dev, void *data,
> struct drm_file *file);
> +int i915_perf_add_config_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file);
> +int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file);
> void i915_oa_init_reg_state(struct intel_engine_cs *engine,
> struct i915_gem_context *ctx,
> uint32_t *reg_state);
> diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
> index d9f77a4d85db..92cb6a7568e7 100644
> --- a/drivers/gpu/drm/i915/i915_perf.c
> +++ b/drivers/gpu/drm/i915/i915_perf.c
> @@ -357,6 +357,23 @@ struct perf_open_properties {
> int oa_period_exponent;
> };
>
> +struct i915_oa_dynamic_config
> +{
> + char guid[40];
> + int id;
> +
> + const struct i915_oa_reg *mux_regs;
> + int mux_regs_len;
> + const struct i915_oa_reg *b_counter_regs;
> + int b_counter_regs_len;
> + const struct i915_oa_reg *flex_regs;
> + int flex_regs_len;
> +
> + struct attribute_group sysfs_metric;
> + struct attribute *attrs[2];
> + struct device_attribute sysfs_metric_id;
> +};
> +
> static u32 gen8_oa_hw_tail_read(struct drm_i915_private *dev_priv)
> {
> return I915_READ(GEN8_OATAILPTR) & GEN8_OATAILPTR_MASK;
> @@ -1451,11 +1468,39 @@ static void config_oa_regs(struct drm_i915_private *dev_priv,
> }
> }
>
> +int select_dynamic_metric_set(struct drm_i915_private *dev_priv)
> +{
> + struct i915_oa_dynamic_config *oa_config;
> +
> + oa_config = idr_find(&dev_priv->perf.metrics_idr,
> + dev_priv->perf.oa.metrics_set);
> + if (!oa_config) {
> + return -EINVAL;
> + }
> +
> + dev_priv->perf.oa.n_mux_configs = 1;
> + dev_priv->perf.oa.mux_regs[0] = oa_config->mux_regs;
> + dev_priv->perf.oa.mux_regs_lens[0] = oa_config->mux_regs_len;
> +
> + dev_priv->perf.oa.b_counter_regs = oa_config->b_counter_regs;
> + dev_priv->perf.oa.b_counter_regs_len = oa_config->b_counter_regs_len;
> +
> + dev_priv->perf.oa.flex_regs = oa_config->flex_regs;
> + dev_priv->perf.oa.flex_regs_len = oa_config->flex_regs_len;
> +
> + return 0;
> +}
> +
> static int hsw_enable_metric_set(struct drm_i915_private *dev_priv)
> {
> - int ret = i915_oa_select_metric_set_hsw(dev_priv);
> + int ret;
> int i;
>
> + if (dev_priv->perf.oa.metrics_set > dev_priv->perf.oa.n_builtin_sets)
> + ret = select_dynamic_metric_set(dev_priv);
> + else
> + ret = i915_oa_select_metric_set_hsw(dev_priv);
> +
> if (ret)
> return ret;
>
> @@ -1776,8 +1821,12 @@ static int gen8_configure_all_contexts(struct drm_i915_private *dev_priv,
>
> static int gen8_enable_metric_set(struct drm_i915_private *dev_priv)
> {
> - int ret = dev_priv->perf.oa.ops.select_metric_set(dev_priv);
> - int i;
> + int ret, i;
> +
> + if (dev_priv->perf.oa.metrics_set > dev_priv->perf.oa.n_builtin_sets)
> + ret = select_dynamic_metric_set(dev_priv);
> + else
> + ret = dev_priv->perf.oa.ops.select_metric_set(dev_priv);
>
> if (ret)
> return ret;
> @@ -2055,7 +2104,7 @@ static int i915_oa_stream_init(struct i915_perf_stream *stream,
> dev_priv->perf.oa.oa_buffer.format =
> dev_priv->perf.oa.oa_formats[props->oa_format].format;
>
> - dev_priv->perf.oa.metrics_set = props->metrics_set;
> + dev_priv->perf.oa.metrics_set = stream->metrics_set = props->metrics_set;
>
> dev_priv->perf.oa.periodic = props->oa_periodic;
> if (dev_priv->perf.oa.periodic)
> @@ -2713,7 +2762,9 @@ static int read_properties_unlocked(struct drm_i915_private *dev_priv,
> break;
> case DRM_I915_PERF_PROP_OA_METRICS_SET:
> if (value == 0 ||
> - value > dev_priv->perf.oa.n_builtin_sets) {
> + (value > dev_priv->perf.oa.n_builtin_sets &&
> + idr_find(&dev_priv->perf.metrics_idr,
> + value) == NULL)) {
> DRM_DEBUG("Unknown OA metric set ID\n");
> return -EINVAL;
> }
> @@ -2957,6 +3008,321 @@ void i915_perf_unregister(struct drm_i915_private *dev_priv)
> dev_priv->perf.metrics_kobj = NULL;
> }
>
> +static bool gen8_is_valid_flex_addr(struct drm_i915_private *dev_priv, u32 addr)
> +{
> + static const i915_reg_t flex_eu_regs[] = {
> + EU_PERF_CNTL0,
> + EU_PERF_CNTL1,
> + EU_PERF_CNTL2,
> + EU_PERF_CNTL3,
> + EU_PERF_CNTL4,
> + EU_PERF_CNTL5,
> + EU_PERF_CNTL6,
> + };
> + int i;
> +
> + for (i = 0; i < ARRAY_SIZE(flex_eu_regs); i++) {
> + if (flex_eu_regs[i].reg == addr)
> + return true;
> + }
> + return false;
> +}
> +
> +static bool gen7_is_valid_b_counter_addr(struct drm_i915_private *dev_priv, u32 addr)
> +{
> + return (addr >= 0x2380 && addr <= 0x27ac);
> +}
> +
> +static bool gen7_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
> +{
> + return addr == NOA_WRITE.reg ||
> + (addr >= 0xd0c && addr <= 0xd3c) ||
> + (addr >= 0x25100 && addr <= 0x2FB9C);
> +}
> +
> +static bool hsw_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
> +{
> + return (addr >= 0x25100 && addr <= 0x2FF90) ||
> + gen7_is_valid_mux_addr(dev_priv, addr);
> +}
> +
> +static bool chv_is_valid_mux_addr(struct drm_i915_private *dev_priv, u32 addr)
> +{
> + return (addr >= 0x182300 && addr <= 0x1823A4) ||
> + gen7_is_valid_mux_addr(dev_priv, addr);
> +}
> +
> +static struct i915_oa_reg *alloc_oa_regs(struct drm_i915_private *dev_priv,
> + bool (*is_valid)(struct drm_i915_private *dev_priv, u32 addr),
> + u32 __user *regs,
> + u32 n_regs)
> +{
> + int err;
> + int i;
> + struct i915_oa_reg *oa_regs;
> +
> + if (!n_regs)
> + return NULL;
> +
> + if (!is_valid)
> + return ERR_PTR(-EINVAL);
> +
> + oa_regs = kmalloc(sizeof(*oa_regs) * n_regs, GFP_KERNEL);
> + if (!oa_regs)
> + return ERR_PTR(-ENOMEM);
> +
> + for (i = 0; i < n_regs; i++) {
> + int ret;
> + u32 addr, value;
> +
> + ret = get_user(addr, regs);
> + if (ret) {
> + err = ret;
> + goto addr_err;
> + }
> +
> + if (!is_valid(dev_priv, addr)) {
> + DRM_ERROR("Invalid oa_reg address: %X\n", addr);
DRM_ERROR's shouldn't be user-triggerable, elsewhere also.
> + err = -EINVAL;
> + goto addr_err;
> + }
> +
> + ret = get_user(value, regs + 1);
> + if (ret) {
> + err = ret;
> + goto value_err;
> + }
> +
> + oa_regs[i].addr = _MMIO(addr);
> + oa_regs[i].value = value;
> +
> + regs += 2;
> + }
> +
> + return oa_regs;
> +
> +addr_err:
> +value_err:
> + kfree(oa_regs);
> + return ERR_PTR(err);
> +}
> +
> +static ssize_t show_dynamic_id(struct device *dev,
> + struct device_attribute *attr,
> + char *buf)
> +{
> + struct i915_oa_dynamic_config *oa_config =
> + container_of(attr, typeof(*oa_config), sysfs_metric_id);
> +
> + return sprintf(buf, "%d\n", oa_config->id);
> +}
> +
> +static int create_dynamic_oa_sysfs_entry(struct drm_i915_private *dev_priv,
> + struct i915_oa_dynamic_config *oa_config)
> +{
> + oa_config->sysfs_metric_id.attr.name = "id";
> + oa_config->sysfs_metric_id.attr.mode = S_IRUGO;
> + oa_config->sysfs_metric_id.show = show_dynamic_id;
> + oa_config->sysfs_metric_id.store = NULL;
> +
> + oa_config->attrs[0] = &oa_config->sysfs_metric_id.attr;
> + oa_config->attrs[1] = NULL;
> +
> + oa_config->sysfs_metric.name = oa_config->guid;
> + oa_config->sysfs_metric.attrs = oa_config->attrs;
> +
> + return sysfs_create_group(dev_priv->perf.metrics_kobj,
> + &oa_config->sysfs_metric);
> +}
> +
> +int i915_perf_add_config_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file)
> +{
> + int err;
> + struct drm_i915_private *dev_priv = dev->dev_private;
> + struct drm_i915_perf_oa_config *args = data;
> + struct i915_oa_dynamic_config *oa_config, *tmp;
> + int id;
> + unsigned int x1, x2, x3, x4, x5;
> +
> + if (!dev_priv->perf.initialized) {
> + DRM_DEBUG("i915 perf interface not available for this system\n");
> + return -ENOTSUPP;
> + }
> +
> + if (!capable(CAP_SYS_ADMIN)) {
> + DRM_ERROR("Insufficient privileges to add i915 OA config\n");
> + return -EACCES;
> + }
> +
> + if ((!args->mux_regs || !args->n_mux_regs) &&
> + (!args->boolean_regs || !args->n_boolean_regs) &&
> + (!args->flex_regs || !args->n_flex_regs)) {
> + DRM_ERROR("No OA registers given\n");
> + return -EINVAL;
> + }
> +
> + oa_config = kzalloc(sizeof(*oa_config), GFP_KERNEL);
> + if (!oa_config) {
> + DRM_ERROR("Failed to allocate memory for the OA config\n");
> + return -ENOMEM;
> + }
> +
> + err = strncpy_from_user(oa_config->guid, u64_to_user_ptr(args->uuid),
> + sizeof(oa_config->guid));
> + if (err < 0) {
> + DRM_ERROR("Failed to copy uuid from OA config\n");
> + goto uuid_err;
> + }
> +
> + if (sscanf(oa_config->guid, "%08x-%04x-%04x-%04x-%012x", &x1, &x2, &x3,
> + &x4, &x5) != 5) {
> + DRM_ERROR("Invalid uuid format for OA config\n");
> + err = -EINVAL;
> + goto uuid_err;
> + }
> +
> + oa_config->mux_regs_len = args->n_mux_regs;
> + oa_config->mux_regs =
> + alloc_oa_regs(dev_priv,
> + dev_priv->perf.oa.ops.is_valid_mux_reg,
> + u64_to_user_ptr(args->mux_regs),
> + args->n_mux_regs);
> +
> + if (IS_ERR(oa_config->mux_regs)) {
> + DRM_ERROR("Failed to create OA config for mux_regs\n");
> + err = PTR_ERR(oa_config->mux_regs);
> + goto mux_err;
> + }
> +
> + oa_config->b_counter_regs_len = args->n_boolean_regs;
> + oa_config->b_counter_regs =
> + alloc_oa_regs(dev_priv,
> + dev_priv->perf.oa.ops.is_valid_b_counter_reg,
> + u64_to_user_ptr(args->boolean_regs),
> + args->n_boolean_regs);
> +
> + if (IS_ERR(oa_config->b_counter_regs)) {
> + DRM_ERROR("Failed to create OA config for b_counter_regs\n");
> + err = PTR_ERR(oa_config->b_counter_regs);
> + goto boolean_err;
> + }
> +
> + if (INTEL_GEN(dev_priv) < 8) {
> + if (args->n_flex_regs != 0)
> + goto flex_err;
> + } else {
> + oa_config->flex_regs_len = args->n_flex_regs;
> + oa_config->flex_regs =
> + alloc_oa_regs(dev_priv,
> + dev_priv->perf.oa.ops.is_valid_flex_reg,
> + u64_to_user_ptr(args->flex_regs),
> + args->n_flex_regs);
> +
> + if (IS_ERR(oa_config->flex_regs)) {
> + DRM_ERROR("Failed to create OA config for flex_regs\n");
> + err = PTR_ERR(oa_config->flex_regs);
> + goto flex_err;
> + }
> + }
> +
> + err = i915_mutex_lock_interruptible(dev);
> + if (err)
> + goto lock_err;
> +
> + idr_for_each_entry(&dev_priv->perf.metrics_idr, tmp, id) {
> + if (!strcmp(tmp->guid, oa_config->guid)) {
> + DRM_ERROR("OA config already exists with this uuid\n");
> + err = -EADDRINUSE;
> + goto sysfs_err;
> + }
> + }
> +
> + err = create_dynamic_oa_sysfs_entry(dev_priv, oa_config);
> + if (err) {
> + DRM_ERROR("Failed to create sysfs entry for OA config\n");
> + goto sysfs_err;
> + }
> +
> + oa_config->id = idr_alloc(&dev_priv->perf.metrics_idr,
> + oa_config,
> + dev_priv->perf.oa.n_builtin_sets + 1,
> + 0, GFP_KERNEL);
> +
> + mutex_unlock(&dev->struct_mutex);
> +
> + return oa_config->id;
> +
> +sysfs_err:
> + mutex_unlock(&dev->struct_mutex);
> +lock_err:
> + kfree(oa_config->flex_regs);
> +flex_err:
> + kfree(oa_config->b_counter_regs);
> +boolean_err:
> + kfree(oa_config->mux_regs);
> +mux_err:
> +uuid_err:
> + kfree(oa_config);
> +
> + DRM_ERROR("Failed to add new OA config\n");
> + return err;
> +}
> +
> +int i915_perf_remove_config_ioctl(struct drm_device *dev, void *data,
> + struct drm_file *file)
> +{
> + struct drm_i915_private *dev_priv = dev->dev_private;
> + u64 *arg = data;
> + struct i915_oa_dynamic_config *oa_config;
> + int ret;
> +
> + if (!dev_priv->perf.initialized) {
> + DRM_DEBUG("i915 perf interface not available for this system\n");
> + return -ENOTSUPP;
> + }
> +
> + if (!capable(CAP_SYS_ADMIN)) {
> + DRM_ERROR("Insufficient privileges to remove i915 OA config\n");
> + return -EACCES;
> + }
> +
> + ret = i915_mutex_lock_interruptible(dev);
> + if (ret)
> + goto lock_err;
> +
> + if (dev_priv->perf.oa.exclusive_stream &&
> + dev_priv->perf.oa.exclusive_stream->metrics_set == *arg) {
> + DRM_ERROR("Failed to remove config in use\n");
> + ret = -EADDRINUSE;
> + goto config_err;
> + }
> +
> + oa_config = idr_find(&dev_priv->perf.metrics_idr, *arg);
> + if (!oa_config) {
> + DRM_ERROR("Failed to remove unknown config\n");
> + ret = -EINVAL;
> + goto config_err;
> + }
> +
> + idr_remove(&dev_priv->perf.metrics_idr, *arg);
> +
> + sysfs_remove_group(dev_priv->perf.metrics_kobj,
> + &oa_config->sysfs_metric);
> + if (oa_config->flex_regs)
> + kfree(oa_config->flex_regs);
> + if (oa_config->b_counter_regs)
> + kfree(oa_config->b_counter_regs);
> + if (oa_config->mux_regs)
> + kfree(oa_config->mux_regs);
> + kfree(oa_config);
> +
> +config_err:
> + mutex_unlock(&dev->struct_mutex);
> +lock_err:
> + return ret;
> +}
> +
> static struct ctl_table oa_table[] = {
> {
> .procname = "perf_stream_paranoid",
> @@ -3011,8 +3377,14 @@ static struct ctl_table dev_root[] = {
> void i915_perf_init(struct drm_i915_private *dev_priv)
> {
> dev_priv->perf.oa.n_builtin_sets = 0;
> + idr_init(&dev_priv->perf.metrics_idr);
>
> if (IS_HASWELL(dev_priv)) {
> + dev_priv->perf.oa.ops.is_valid_b_counter_reg =
> + gen7_is_valid_b_counter_addr;
> + dev_priv->perf.oa.ops.is_valid_mux_reg =
> + hsw_is_valid_mux_addr;
> + dev_priv->perf.oa.ops.is_valid_flex_reg = NULL;
> dev_priv->perf.oa.ops.init_oa_buffer = gen7_init_oa_buffer;
> dev_priv->perf.oa.ops.enable_metric_set = hsw_enable_metric_set;
> dev_priv->perf.oa.ops.disable_metric_set = hsw_disable_metric_set;
> @@ -3036,6 +3408,13 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
> * execlist mode by default.
> */
>
> + dev_priv->perf.oa.ops.is_valid_b_counter_reg =
> + gen7_is_valid_b_counter_addr;
> + dev_priv->perf.oa.ops.is_valid_mux_reg =
> + gen7_is_valid_mux_addr;
> + dev_priv->perf.oa.ops.is_valid_flex_reg =
> + gen8_is_valid_flex_addr;
> +
> if (IS_GEN8(dev_priv)) {
> dev_priv->perf.oa.ctx_oactxctrl_offset = 0x120;
> dev_priv->perf.oa.ctx_flexeu0_offset = 0x2ce;
> @@ -3050,6 +3429,8 @@ void i915_perf_init(struct drm_i915_private *dev_priv)
> dev_priv->perf.oa.ops.select_metric_set =
> i915_oa_select_metric_set_bdw;
> } else if (IS_CHERRYVIEW(dev_priv)) {
> + dev_priv->perf.oa.ops.is_valid_mux_reg =
> + chv_is_valid_mux_addr;
> dev_priv->perf.oa.n_builtin_sets =
> i915_oa_n_builtin_metric_sets_chv;
> dev_priv->perf.oa.ops.select_metric_set =
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 21ab12f4e72a..433fcd7beb72 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -732,6 +732,8 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
> #define GDT_CHICKEN_BITS _MMIO(0x9840)
> #define GT_NOA_ENABLE 0x00000080
>
> +#define NOA_WRITE _MMIO(0x9888)
> +
> /*
> * OA Boolean state
> */
> diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
> index 7ccbd6a2bbe0..e2ff47732303 100644
> --- a/include/uapi/drm/i915_drm.h
> +++ b/include/uapi/drm/i915_drm.h
> @@ -260,6 +260,8 @@ typedef struct _drm_i915_sarea {
> #define DRM_I915_GEM_CONTEXT_GETPARAM 0x34
> #define DRM_I915_GEM_CONTEXT_SETPARAM 0x35
> #define DRM_I915_PERF_OPEN 0x36
> +#define DRM_I915_PERF_ADD_CONFIG 0x37
> +#define DRM_I915_PERF_REMOVE_CONFIG 0x38
>
> #define DRM_IOCTL_I915_INIT DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
> #define DRM_IOCTL_I915_FLUSH DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
> @@ -315,6 +317,8 @@ typedef struct _drm_i915_sarea {
> #define DRM_IOCTL_I915_GEM_CONTEXT_GETPARAM DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_CONTEXT_GETPARAM, struct drm_i915_gem_context_param)
> #define DRM_IOCTL_I915_GEM_CONTEXT_SETPARAM DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_CONTEXT_SETPARAM, struct drm_i915_gem_context_param)
> #define DRM_IOCTL_I915_PERF_OPEN DRM_IOW(DRM_COMMAND_BASE + DRM_I915_PERF_OPEN, struct drm_i915_perf_open_param)
> +#define DRM_IOCTL_I915_PERF_ADD_CONFIG DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_PERF_ADD_CONFIG, struct drm_i915_perf_oa_config)
> +#define DRM_IOCTL_I915_PERF_REMOVE_CONFIG DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_PERF_REMOVE_CONFIG, __u64)
>
> /* Allow drivers to submit batchbuffers directly to hardware, relying
> * on the security mechanisms provided by hardware.
> @@ -1467,6 +1471,23 @@ enum drm_i915_perf_record_type {
> DRM_I915_PERF_RECORD_MAX /* non-ABI */
> };
>
> +/**
> + * Structure to upload perf dynamic configuration into the kernel.
> + */
> +struct drm_i915_perf_oa_config {
> + /* string formatted like "%08x-%04x-%04x-%04x-%012x" **/
> + __u64 __user uuid;
> +
> + __u32 n_mux_regs;
> + __u64 __user mux_regs;
> +
> + __u32 n_boolean_regs;
> + __u64 __user boolean_regs;
> +
> + __u32 n_flex_regs;
> + __u64 __user flex_regs;
This needs padding.
> +};
> +
> #if defined(__cplusplus)
> }
> #endif
> --
> 2.13.2
>
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