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platform/x86: ISST: Support SST-TF revision 2

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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: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20250506163531.1061185-2-srinivas.pandruvada@linux.intel.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Srinivas Pandruvada
2025-05-06 09:35:29 -07:00
committed by Ilpo Järvinen
parent df6061c276
commit 885d1c2a30
1 changed files with 33 additions and 0 deletions
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33
drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c
View File

@@ -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;