[igt-dev] [PATCH v4 1/4] lib/igt_sysfs: Add support to query number of tiles

[Dixit, Ashutosh]

On Tue, 27 Jun 2023 11:08:02 -0700, Himal Prasad Ghimiray wrote:
>

Hi Himal,

> diff --git a/lib/igt_sysfs.h b/lib/igt_sysfs.h
> index 978b6906..de2c9a86 100644
> --- a/lib/igt_sysfs.h
> +++ b/lib/igt_sysfs.h
> @@ -38,6 +38,11 @@
>	     (dirfd__ = igt_sysfs_gt_open(i915__, gt__)) != -1; \
>	     close(dirfd__), gt__++)
>
> +#define for_each_sysfs_tile_dirfd(xe__, tile__, tile_cnt__) \
> +	for (tile__ = 0, tile_cnt__ = igt_sysfs_get_num_tiles(xe__); \
> +	     tile__ < tile_cnt__; \
> +	     ++tile__)
> +

You did not answer the question I asked previously about this:

"Where is dirfd here which should be a fd to an open sysfs directory as in
for_each_sysfs_gt_dirfd?"

>  #define i915_for_each_gt for_each_sysfs_gt_dirfd

>
>  #define igt_sysfs_rps_write(dir, id, data, len) \
> @@ -73,6 +78,8 @@
>  #define igt_sysfs_rps_set_boolean(dir, id, value) \
>	igt_sysfs_set_boolean(dir, igt_sysfs_dir_id_to_name(dir, id), value)
>
> +#define xe_for_each_tile for_each_sysfs_tile_dirfd

I think let's just do this and get rid of for_each_sysfs_tile_dirfd:

#define xe_for_each_tile(xe__, tile__, tile_cnt__) \
	for (tile__ = 0, tile_cnt__ = igt_sysfs_get_num_tiles(xe__); \
	     tile__ < tile_cnt__; \
	     ++tile__)

> +
>  enum i915_attr_id {
>	RPS_ACT_FREQ_MHZ,
>	RPS_CUR_FREQ_MHZ,
> @@ -97,6 +104,7 @@ int igt_sysfs_open(int device);
>  char *igt_sysfs_gt_path(int device, int gt, char *path, int pathlen);
>  int igt_sysfs_gt_open(int device, int gt);
>  int igt_sysfs_get_num_gt(int device);
> +int igt_sysfs_get_num_tiles(int device);
>  bool igt_sysfs_has_attr(int dir, const char *attr);
>  const char *igt_sysfs_dir_id_to_name(int dir, enum i915_attr_id id);
>  const char *igt_sysfs_path_id_to_name(const char *path, enum i915_attr_id id);
> --
> 2.25.1
>