Unverified Commit 885d1c2a authored by Srinivas Pandruvada's avatar Srinivas Pandruvada Committed by Ilpo Järvinen
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platform/x86: ISST: Support SST-TF revision 2 



SST-TF revision 2 supports a higher number of cores per bucket, as the
current limit of 256 cores may be insufficient. To accommodate this, a
new offset, "SST_TF_INFO-8," is introduced, allowing for a higher core
count. Utilize this offset instead of the current "SST_TF_INFO-1" offset,
based on SST-TF revision 2 or higher, and if there is a non-zero core
count in any bucket.

Signed-off-by: default avatarSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20250506163531.1061185-2-srinivas.pandruvada@linux.intel.com


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent df6061c2

drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c

+33 −0
Original line number Diff line number Diff line
@@ -1328,9 +1328,14 @@ static int isst_if_get_tpmi_instance_count(void __user *argp) 
#define SST_TF_INFO_0_OFFSET	0

#define SST_TF_INFO_1_OFFSET	8

#define SST_TF_INFO_2_OFFSET	16

#define SST_TF_INFO_8_OFFSET	64

#define SST_TF_INFO_8_BUCKETS	3



#define SST_TF_MAX_LP_CLIP_RATIOS	TRL_MAX_LEVELS



#define SST_TF_FEATURE_REV_START	4

#define SST_TF_FEATURE_REV_WIDTH	8



#define SST_TF_LP_CLIP_RATIO_0_START	16

#define SST_TF_LP_CLIP_RATIO_0_WIDTH	8
@@ -1340,10 +1345,14 @@ static int isst_if_get_tpmi_instance_count(void __user *argp) 
#define SST_TF_NUM_CORE_0_START 0

#define SST_TF_NUM_CORE_0_WIDTH 8



#define SST_TF_NUM_MOD_0_START	0

#define SST_TF_NUM_MOD_0_WIDTH	16



static int isst_if_get_turbo_freq_info(void __user *argp)

{

	static struct isst_turbo_freq_info turbo_freq;

	struct tpmi_per_power_domain_info *power_domain_info;

	u8 feature_rev;

	int i, j;



	if (copy_from_user(&turbo_freq, argp, sizeof(turbo_freq)))
@@ -1360,6 +1369,10 @@ static int isst_if_get_turbo_freq_info(void __user *argp) 
	turbo_freq.max_trl_levels = TRL_MAX_LEVELS;

	turbo_freq.max_clip_freqs = SST_TF_MAX_LP_CLIP_RATIOS;



	_read_tf_level_info("feature_rev", feature_rev, turbo_freq.level,

			    SST_TF_INFO_0_OFFSET, SST_TF_FEATURE_REV_START,

			    SST_TF_FEATURE_REV_WIDTH, SST_MUL_FACTOR_NONE);



	for (i = 0; i < turbo_freq.max_clip_freqs; ++i)

		_read_tf_level_info("lp_clip*", turbo_freq.lp_clip_freq_mhz[i],

				    turbo_freq.level, SST_TF_INFO_0_OFFSET,
@@ -1376,12 +1389,32 @@ static int isst_if_get_turbo_freq_info(void __user *argp) 
					    SST_MUL_FACTOR_FREQ)

	}



	if (feature_rev >= 2) {

		bool has_tf_info_8 = false;



		for (i = 0; i < SST_TF_INFO_8_BUCKETS; ++i) {

			_read_tf_level_info("bucket_*_mod_count", turbo_freq.bucket_core_counts[i],

					    turbo_freq.level, SST_TF_INFO_8_OFFSET,

					    SST_TF_NUM_MOD_0_WIDTH * i, SST_TF_NUM_MOD_0_WIDTH,

					    SST_MUL_FACTOR_NONE)



			if (turbo_freq.bucket_core_counts[i])

				has_tf_info_8 = true;

		}



		if (has_tf_info_8)

			goto done_core_count;

	}



	for (i = 0; i < TRL_MAX_BUCKETS; ++i)

		_read_tf_level_info("bucket_*_core_count", turbo_freq.bucket_core_counts[i],

				    turbo_freq.level, SST_TF_INFO_1_OFFSET,

				    SST_TF_NUM_CORE_0_WIDTH * i, SST_TF_NUM_CORE_0_WIDTH,

				    SST_MUL_FACTOR_NONE)





done_core_count:



	if (copy_to_user(argp, &turbo_freq, sizeof(turbo_freq)))

		return -EFAULT;