diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_query.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_query.c | 306 |
1 files changed, 300 insertions, 6 deletions
diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c index ad9240a0817a..c27cfef9281c 100644 --- a/drivers/gpu/drm/i915/i915_query.c +++ b/drivers/gpu/drm/i915/i915_query.c @@ -7,6 +7,7 @@ #include <linux/nospec.h> #include "i915_drv.h" +#include "i915_perf.h" #include "i915_query.h" #include <uapi/drm/i915_drm.h> @@ -37,8 +38,6 @@ static int query_topology_info(struct drm_i915_private *dev_priv, const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; struct drm_i915_query_topology_info topo; u32 slice_length, subslice_length, eu_length, total_length; - u8 subslice_stride = GEN_SSEU_STRIDE(sseu->max_subslices); - u8 eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice); int ret; if (query_item->flags != 0) @@ -50,8 +49,8 @@ static int query_topology_info(struct drm_i915_private *dev_priv, BUILD_BUG_ON(sizeof(u8) != sizeof(sseu->slice_mask)); slice_length = sizeof(sseu->slice_mask); - subslice_length = sseu->max_slices * subslice_stride; - eu_length = sseu->max_slices * sseu->max_subslices * eu_stride; + subslice_length = sseu->max_slices * sseu->ss_stride; + eu_length = sseu->max_slices * sseu->max_subslices * sseu->eu_stride; total_length = sizeof(topo) + slice_length + subslice_length + eu_length; @@ -69,9 +68,9 @@ static int query_topology_info(struct drm_i915_private *dev_priv, topo.max_eus_per_subslice = sseu->max_eus_per_subslice; topo.subslice_offset = slice_length; - topo.subslice_stride = subslice_stride; + topo.subslice_stride = sseu->ss_stride; topo.eu_offset = slice_length + subslice_length; - topo.eu_stride = eu_stride; + topo.eu_stride = sseu->eu_stride; if (__copy_to_user(u64_to_user_ptr(query_item->data_ptr), &topo, sizeof(topo))) @@ -142,10 +141,305 @@ query_engine_info(struct drm_i915_private *i915, return len; } +static int can_copy_perf_config_registers_or_number(u32 user_n_regs, + u64 user_regs_ptr, + u32 kernel_n_regs) +{ + /* + * We'll just put the number of registers, and won't copy the + * register. + */ + if (user_n_regs == 0) + return 0; + + if (user_n_regs < kernel_n_regs) + return -EINVAL; + + if (!access_ok(u64_to_user_ptr(user_regs_ptr), + 2 * sizeof(u32) * kernel_n_regs)) + return -EFAULT; + + return 0; +} + +static int copy_perf_config_registers_or_number(const struct i915_oa_reg *kernel_regs, + u32 kernel_n_regs, + u64 user_regs_ptr, + u32 *user_n_regs) +{ + u32 r; + + if (*user_n_regs == 0) { + *user_n_regs = kernel_n_regs; + return 0; + } + + *user_n_regs = kernel_n_regs; + + for (r = 0; r < kernel_n_regs; r++) { + u32 __user *user_reg_ptr = + u64_to_user_ptr(user_regs_ptr + sizeof(u32) * r * 2); + u32 __user *user_val_ptr = + u64_to_user_ptr(user_regs_ptr + sizeof(u32) * r * 2 + + sizeof(u32)); + int ret; + + ret = __put_user(i915_mmio_reg_offset(kernel_regs[r].addr), + user_reg_ptr); + if (ret) + return -EFAULT; + + ret = __put_user(kernel_regs[r].value, user_val_ptr); + if (ret) + return -EFAULT; + } + + return 0; +} + +static int query_perf_config_data(struct drm_i915_private *i915, + struct drm_i915_query_item *query_item, + bool use_uuid) +{ + struct drm_i915_query_perf_config __user *user_query_config_ptr = + u64_to_user_ptr(query_item->data_ptr); + struct drm_i915_perf_oa_config __user *user_config_ptr = + u64_to_user_ptr(query_item->data_ptr + + sizeof(struct drm_i915_query_perf_config)); + struct drm_i915_perf_oa_config user_config; + struct i915_perf *perf = &i915->perf; + struct i915_oa_config *oa_config; + char uuid[UUID_STRING_LEN + 1]; + u64 config_id; + u32 flags, total_size; + int ret; + + if (!perf->i915) + return -ENODEV; + + total_size = + sizeof(struct drm_i915_query_perf_config) + + sizeof(struct drm_i915_perf_oa_config); + + if (query_item->length == 0) + return total_size; + + if (query_item->length < total_size) { + DRM_DEBUG("Invalid query config data item size=%u expected=%u\n", + query_item->length, total_size); + return -EINVAL; + } + + if (!access_ok(user_query_config_ptr, total_size)) + return -EFAULT; + + if (__get_user(flags, &user_query_config_ptr->flags)) + return -EFAULT; + + if (flags != 0) + return -EINVAL; + + if (use_uuid) { + struct i915_oa_config *tmp; + int id; + + BUILD_BUG_ON(sizeof(user_query_config_ptr->uuid) >= sizeof(uuid)); + + memset(&uuid, 0, sizeof(uuid)); + if (__copy_from_user(uuid, user_query_config_ptr->uuid, + sizeof(user_query_config_ptr->uuid))) + return -EFAULT; + + oa_config = NULL; + rcu_read_lock(); + idr_for_each_entry(&perf->metrics_idr, tmp, id) { + if (!strcmp(tmp->uuid, uuid)) { + oa_config = i915_oa_config_get(tmp); + break; + } + } + rcu_read_unlock(); + } else { + if (__get_user(config_id, &user_query_config_ptr->config)) + return -EFAULT; + + oa_config = i915_perf_get_oa_config(perf, config_id); + } + if (!oa_config) + return -ENOENT; + + if (__copy_from_user(&user_config, user_config_ptr, + sizeof(user_config))) { + ret = -EFAULT; + goto out; + } + + ret = can_copy_perf_config_registers_or_number(user_config.n_boolean_regs, + user_config.boolean_regs_ptr, + oa_config->b_counter_regs_len); + if (ret) + goto out; + + ret = can_copy_perf_config_registers_or_number(user_config.n_flex_regs, + user_config.flex_regs_ptr, + oa_config->flex_regs_len); + if (ret) + goto out; + + ret = can_copy_perf_config_registers_or_number(user_config.n_mux_regs, + user_config.mux_regs_ptr, + oa_config->mux_regs_len); + if (ret) + goto out; + + ret = copy_perf_config_registers_or_number(oa_config->b_counter_regs, + oa_config->b_counter_regs_len, + user_config.boolean_regs_ptr, + &user_config.n_boolean_regs); + if (ret) + goto out; + + ret = copy_perf_config_registers_or_number(oa_config->flex_regs, + oa_config->flex_regs_len, + user_config.flex_regs_ptr, + &user_config.n_flex_regs); + if (ret) + goto out; + + ret = copy_perf_config_registers_or_number(oa_config->mux_regs, + oa_config->mux_regs_len, + user_config.mux_regs_ptr, + &user_config.n_mux_regs); + if (ret) + goto out; + + memcpy(user_config.uuid, oa_config->uuid, sizeof(user_config.uuid)); + + if (__copy_to_user(user_config_ptr, &user_config, + sizeof(user_config))) { + ret = -EFAULT; + goto out; + } + + ret = total_size; + +out: + i915_oa_config_put(oa_config); + return ret; +} + +static size_t sizeof_perf_config_list(size_t count) +{ + return sizeof(struct drm_i915_query_perf_config) + sizeof(u64) * count; +} + +static size_t sizeof_perf_metrics(struct i915_perf *perf) +{ + struct i915_oa_config *tmp; + size_t i; + int id; + + i = 1; + rcu_read_lock(); + idr_for_each_entry(&perf->metrics_idr, tmp, id) + i++; + rcu_read_unlock(); + + return sizeof_perf_config_list(i); +} + +static int query_perf_config_list(struct drm_i915_private *i915, + struct drm_i915_query_item *query_item) +{ + struct drm_i915_query_perf_config __user *user_query_config_ptr = + u64_to_user_ptr(query_item->data_ptr); + struct i915_perf *perf = &i915->perf; + u64 *oa_config_ids = NULL; + int alloc, n_configs; + u32 flags; + int ret; + + if (!perf->i915) + return -ENODEV; + + if (query_item->length == 0) + return sizeof_perf_metrics(perf); + + if (get_user(flags, &user_query_config_ptr->flags)) + return -EFAULT; + + if (flags != 0) + return -EINVAL; + + n_configs = 1; + do { + struct i915_oa_config *tmp; + u64 *ids; + int id; + + ids = krealloc(oa_config_ids, + n_configs * sizeof(*oa_config_ids), + GFP_KERNEL); + if (!ids) + return -ENOMEM; + + alloc = fetch_and_zero(&n_configs); + + ids[n_configs++] = 1ull; /* reserved for test_config */ + rcu_read_lock(); + idr_for_each_entry(&perf->metrics_idr, tmp, id) { + if (n_configs < alloc) + ids[n_configs] = id; + n_configs++; + } + rcu_read_unlock(); + + oa_config_ids = ids; + } while (n_configs > alloc); + + if (query_item->length < sizeof_perf_config_list(n_configs)) { + DRM_DEBUG("Invalid query config list item size=%u expected=%zu\n", + query_item->length, + sizeof_perf_config_list(n_configs)); + kfree(oa_config_ids); + return -EINVAL; + } + + if (put_user(n_configs, &user_query_config_ptr->config)) { + kfree(oa_config_ids); + return -EFAULT; + } + + ret = copy_to_user(user_query_config_ptr + 1, + oa_config_ids, + n_configs * sizeof(*oa_config_ids)); + kfree(oa_config_ids); + if (ret) + return -EFAULT; + + return sizeof_perf_config_list(n_configs); +} + +static int query_perf_config(struct drm_i915_private *i915, + struct drm_i915_query_item *query_item) +{ + switch (query_item->flags) { + case DRM_I915_QUERY_PERF_CONFIG_LIST: + return query_perf_config_list(i915, query_item); + case DRM_I915_QUERY_PERF_CONFIG_DATA_FOR_UUID: + return query_perf_config_data(i915, query_item, true); + case DRM_I915_QUERY_PERF_CONFIG_DATA_FOR_ID: + return query_perf_config_data(i915, query_item, false); + default: + return -EINVAL; + } +} + static int (* const i915_query_funcs[])(struct drm_i915_private *dev_priv, struct drm_i915_query_item *query_item) = { query_topology_info, query_engine_info, + query_perf_config, }; int i915_query_ioctl(struct drm_device *dev, void *data, struct drm_file *file) |