{ }
};
+static int ufs_tx_eq_params_show(struct seq_file *s, void *data)
+{
+ const char *file_name = s->file->f_path.dentry->d_name.name;
+ u32 gear = (u32)(uintptr_t)s->file->f_inode->i_private;
+ struct ufs_hba *hba = hba_from_file(s->file);
+ struct ufshcd_tx_eq_settings *settings;
+ struct ufs_pa_layer_attr *pwr_info;
+ struct ufshcd_tx_eq_params *params;
+ u32 rate = hba->pwr_info.hs_rate;
+ u32 num_lanes;
+ int lane;
+
+ if (!ufshcd_is_tx_eq_supported(hba))
+ return -EOPNOTSUPP;
+
+ if (gear < UFS_HS_G1 || gear > UFS_HS_GEAR_MAX) {
+ seq_printf(s, "Invalid gear selected: %u\n", gear);
+ return 0;
+ }
+
+ if (!hba->max_pwr_info.is_valid) {
+ seq_puts(s, "Max power info is invalid\n");
+ return 0;
+ }
+
+ pwr_info = &hba->max_pwr_info.info;
+ params = &hba->tx_eq_params[gear - 1];
+ if (!params->is_valid) {
+ seq_printf(s, "TX EQ params are invalid for HS-G%u, Rate-%s\n",
+ gear, ufs_hs_rate_to_str(rate));
+ return 0;
+ }
+
+ if (strcmp(file_name, "host_tx_eq_params") == 0) {
+ settings = params->host;
+ num_lanes = pwr_info->lane_tx;
+ seq_printf(s, "Host TX EQ PreShoot Cap: 0x%02x, DeEmphasis Cap: 0x%02x\n",
+ hba->host_preshoot_cap, hba->host_deemphasis_cap);
+ } else if (strcmp(file_name, "device_tx_eq_params") == 0) {
+ settings = params->device;
+ num_lanes = pwr_info->lane_rx;
+ seq_printf(s, "Device TX EQ PreShoot Cap: 0x%02x, DeEmphasis Cap: 0x%02x\n",
+ hba->device_preshoot_cap, hba->device_deemphasis_cap);
+ } else {
+ return -ENOENT;
+ }
+
+ seq_printf(s, "TX EQ setting for HS-G%u, Rate-%s:\n", gear,
+ ufs_hs_rate_to_str(rate));
+ for (lane = 0; lane < num_lanes; lane++)
+ seq_printf(s, "TX Lane %d - PreShoot: %d, DeEmphasis: %d, Pre-Coding %senabled\n",
+ lane, settings[lane].preshoot,
+ settings[lane].deemphasis,
+ settings[lane].precode_en ? "" : "not ");
+
+ return 0;
+}
+
+static int ufs_tx_eq_params_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ufs_tx_eq_params_show, inode->i_private);
+}
+
+static const struct file_operations ufs_tx_eq_params_fops = {
+ .owner = THIS_MODULE,
+ .open = ufs_tx_eq_params_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct ufs_debugfs_attr ufs_tx_eq_attrs[] = {
+ { "host_tx_eq_params", 0400, &ufs_tx_eq_params_fops },
+ { "device_tx_eq_params", 0400, &ufs_tx_eq_params_fops },
+ { }
+};
+
+static int ufs_tx_eqtr_record_show(struct seq_file *s, void *data)
+{
+ const char *file_name = s->file->f_path.dentry->d_name.name;
+ u8 (*fom_array)[TX_HS_NUM_PRESHOOT][TX_HS_NUM_DEEMPHASIS];
+ u32 gear = (u32)(uintptr_t)s->file->f_inode->i_private;
+ unsigned long preshoot_bitmap, deemphasis_bitmap;
+ struct ufs_hba *hba = hba_from_file(s->file);
+ struct ufs_pa_layer_attr *pwr_info;
+ struct ufshcd_tx_eq_params *params;
+ struct ufshcd_tx_eqtr_record *rec;
+ u32 rate = hba->pwr_info.hs_rate;
+ u8 preshoot, deemphasis;
+ u32 num_lanes;
+ char name[32];
+ int lane;
+
+ if (!ufshcd_is_tx_eq_supported(hba))
+ return -EOPNOTSUPP;
+
+ if (gear < UFS_HS_G1 || gear > UFS_HS_GEAR_MAX) {
+ seq_printf(s, "Invalid gear selected: %u\n", gear);
+ return 0;
+ }
+
+ if (!hba->max_pwr_info.is_valid) {
+ seq_puts(s, "Max power info is invalid\n");
+ return 0;
+ }
+
+ pwr_info = &hba->max_pwr_info.info;
+ params = &hba->tx_eq_params[gear - 1];
+ if (!params->is_valid) {
+ seq_printf(s, "TX EQ params are invalid for HS-G%u, Rate-%s\n",
+ gear, ufs_hs_rate_to_str(rate));
+ return 0;
+ }
+
+ rec = params->eqtr_record;
+ if (!rec || !rec->last_record_index) {
+ seq_printf(s, "No TX EQTR records found for HS-G%u, Rate-%s.\n",
+ gear, ufs_hs_rate_to_str(rate));
+ return 0;
+ }
+
+ if (strcmp(file_name, "host_tx_eqtr_record") == 0) {
+ preshoot_bitmap = (hba->host_preshoot_cap << 0x1) | 0x1;
+ deemphasis_bitmap = (hba->host_deemphasis_cap << 0x1) | 0x1;
+ num_lanes = pwr_info->lane_tx;
+ fom_array = rec->host_fom;
+ snprintf(name, sizeof(name), "%s", "Host");
+ } else if (strcmp(file_name, "device_tx_eqtr_record") == 0) {
+ preshoot_bitmap = (hba->device_preshoot_cap << 0x1) | 0x1;
+ deemphasis_bitmap = (hba->device_deemphasis_cap << 0x1) | 0x1;
+ num_lanes = pwr_info->lane_rx;
+ fom_array = rec->device_fom;
+ snprintf(name, sizeof(name), "%s", "Device");
+ } else {
+ return -ENOENT;
+ }
+
+ seq_printf(s, "%s TX EQTR record summary -\n", name);
+ seq_printf(s, "Target Power Mode: HS-G%u, Rate-%s\n", gear,
+ ufs_hs_rate_to_str(rate));
+ seq_printf(s, "Most recent record index: %d\n",
+ rec->last_record_index);
+ seq_printf(s, "Most recent record timestamp: %llu us\n",
+ ktime_to_us(rec->last_record_ts));
+
+ for (lane = 0; lane < num_lanes; lane++) {
+ seq_printf(s, "\nTX Lane %d FOM - %s\n", lane, "PreShoot\\DeEmphasis");
+ seq_puts(s, "\\");
+ /* Print DeEmphasis header as X-axis. */
+ for (deemphasis = 0; deemphasis < TX_HS_NUM_DEEMPHASIS; deemphasis++)
+ seq_printf(s, "%8d%s", deemphasis, " ");
+ seq_puts(s, "\n");
+ /* Print matrix rows with PreShoot as Y-axis. */
+ for (preshoot = 0; preshoot < TX_HS_NUM_PRESHOOT; preshoot++) {
+ seq_printf(s, "%d", preshoot);
+ for (deemphasis = 0; deemphasis < TX_HS_NUM_DEEMPHASIS; deemphasis++) {
+ if (test_bit(preshoot, &preshoot_bitmap) &&
+ test_bit(deemphasis, &deemphasis_bitmap)) {
+ u8 fom = fom_array[lane][preshoot][deemphasis];
+ u8 fom_val = fom & RX_FOM_VALUE_MASK;
+ bool precode_en = fom & RX_FOM_PRECODING_EN_BIT;
+
+ if (ufshcd_is_txeq_presets_used(hba) &&
+ !ufshcd_is_txeq_preset_selected(preshoot, deemphasis))
+ seq_printf(s, "%8s%s", "-", " ");
+ else
+ seq_printf(s, "%8u%s", fom_val,
+ precode_en ? "*" : " ");
+ } else {
+ seq_printf(s, "%8s%s", "x", " ");
+ }
+ }
+ seq_puts(s, "\n");
+ }
+ }
+
+ return 0;
+}
+
+static int ufs_tx_eqtr_record_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, ufs_tx_eqtr_record_show, inode->i_private);
+}
+
+static const struct file_operations ufs_tx_eqtr_record_fops = {
+ .owner = THIS_MODULE,
+ .open = ufs_tx_eqtr_record_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct ufs_debugfs_attr ufs_tx_eqtr_attrs[] = {
+ { "host_tx_eqtr_record", 0400, &ufs_tx_eqtr_record_fops },
+ { "device_tx_eqtr_record", 0400, &ufs_tx_eqtr_record_fops },
+ { }
+};
+
void ufs_debugfs_hba_init(struct ufs_hba *hba)
{
const struct ufs_debugfs_attr *attr;
hba, &ee_usr_mask_fops);
debugfs_create_u32("exception_event_rate_limit_ms", 0600, hba->debugfs_root,
&hba->debugfs_ee_rate_limit_ms);
+
+ if (!(hba->caps & UFSHCD_CAP_TX_EQUALIZATION))
+ return;
+
+ for (u32 gear = UFS_HS_G1; gear <= UFS_HS_GEAR_MAX; gear++) {
+ struct dentry *txeq_dir;
+ char name[32];
+
+ snprintf(name, sizeof(name), "tx_eq_hs_gear%d", gear);
+ txeq_dir = debugfs_create_dir(name, hba->debugfs_root);
+ if (IS_ERR_OR_NULL(txeq_dir))
+ return;
+
+ d_inode(txeq_dir)->i_private = hba;
+
+ /* Create files for TX Equalization parameters */
+ for (attr = ufs_tx_eq_attrs; attr->name; attr++)
+ debugfs_create_file(attr->name, attr->mode, txeq_dir,
+ (void *)(uintptr_t)gear,
+ attr->fops);
+
+ /* TX EQTR is supported for HS-G4 and higher Gears */
+ if (gear < UFS_HS_G4)
+ continue;
+
+ /* Create files for TX EQTR related attributes */
+ for (attr = ufs_tx_eqtr_attrs; attr->name; attr++)
+ debugfs_create_file(attr->name, attr->mode, txeq_dir,
+ (void *)(uintptr_t)gear,
+ attr->fops);
+ }
}
void ufs_debugfs_hba_exit(struct ufs_hba *hba)
projects / thirdparty / kernel / stable.git / commitdiff
