1 // SPDX-License-Identifier: GPL-2.0
8 #include <linux/coresight.h>
15 #include "coresight-cti.h"
25  * include\dt-bindings\arm\coresight-cti-dt.h
85 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in enable_show()
87 	enable_req = atomic_read(&drvdata->config.enable_req_count);  in enable_show()
88 	spin_lock(&drvdata->spinlock);  in enable_show()
89 	powered = drvdata->config.hw_powered;  in enable_show()
90 	enabled = drvdata->config.hw_enabled;  in enable_show()
91 	spin_unlock(&drvdata->spinlock);  in enable_show()
105 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in enable_store()
112 		ret = cti_enable(drvdata->csdev);  in enable_store()
114 		ret = cti_disable(drvdata->csdev);  in enable_store()
126 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in powered_show()
128 	spin_lock(&drvdata->spinlock);  in powered_show()
129 	powered = drvdata->config.hw_powered;  in powered_show()
130 	spin_unlock(&drvdata->spinlock);  in powered_show()
139 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in ctmid_show()
141 	return sprintf(buf, "%d\n", drvdata->ctidev.ctm_id);  in ctmid_show()
149 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in nr_trigger_cons_show()
151 	return sprintf(buf, "%d\n", drvdata->ctidev.nr_trig_con);  in nr_trigger_cons_show()
171 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);	\
173 	pm_runtime_get_sync(dev->parent);				\
174 	spin_lock(&drvdata->spinlock);					\
175 	if (drvdata->config.hw_powered)					\
176 		val = readl_relaxed(drvdata->base + offset);		\
177 	spin_unlock(&drvdata->spinlock);				\
178 	pm_runtime_put_sync(dev->parent);				\
183 /* coresight management registers */
211 /* CTI low level programming registers */
221 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in cti_reg32_show()
222 	struct cti_config *config = &drvdata->config;  in cti_reg32_show()
224 	spin_lock(&drvdata->spinlock);  in cti_reg32_show()
226 		CS_UNLOCK(drvdata->base);  in cti_reg32_show()
227 		val = readl_relaxed(drvdata->base + reg_offset);  in cti_reg32_show()
230 		CS_LOCK(drvdata->base);  in cti_reg32_show()
234 	spin_unlock(&drvdata->spinlock);  in cti_reg32_show()
247 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in cti_reg32_store()
248 	struct cti_config *config = &drvdata->config;  in cti_reg32_store()
251 		return -EINVAL;  in cti_reg32_store()
253 	spin_lock(&drvdata->spinlock);  in cti_reg32_store()
261 	spin_unlock(&drvdata->spinlock);  in cti_reg32_store()
265 /* Standard macro for simple rw cti config registers */
271 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);	\
273 			      &drvdata->config.cfgname, offset);	\
280 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);	\
282 			       &drvdata->config.cfgname, offset);	\
291 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in inout_sel_show()
293 	val = (u32)drvdata->config.ctiinout_sel;  in inout_sel_show()
302 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in inout_sel_store()
305 		return -EINVAL;  in inout_sel_store()
306 	if (val > (CTIINOUTEN_MAX - 1))  in inout_sel_store()
307 		return -EINVAL;  in inout_sel_store()
309 	spin_lock(&drvdata->spinlock);  in inout_sel_store()
310 	drvdata->config.ctiinout_sel = val;  in inout_sel_store()
311 	spin_unlock(&drvdata->spinlock);  in inout_sel_store()
322 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in inen_show()
324 	spin_lock(&drvdata->spinlock);  in inen_show()
325 	index = drvdata->config.ctiinout_sel;  in inen_show()
326 	val = drvdata->config.ctiinen[index];  in inen_show()
327 	spin_unlock(&drvdata->spinlock);  in inen_show()
337 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in inen_store()
338 	struct cti_config *config = &drvdata->config;  in inen_store()
341 		return -EINVAL;  in inen_store()
343 	spin_lock(&drvdata->spinlock);  in inen_store()
344 	index = config->ctiinout_sel;  in inen_store()
345 	config->ctiinen[index] = val;  in inen_store()
350 	spin_unlock(&drvdata->spinlock);  in inen_store()
361 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in outen_show()
363 	spin_lock(&drvdata->spinlock);  in outen_show()
364 	index = drvdata->config.ctiinout_sel;  in outen_show()
365 	val = drvdata->config.ctiouten[index];  in outen_show()
366 	spin_unlock(&drvdata->spinlock);  in outen_show()
376 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in outen_store()
377 	struct cti_config *config = &drvdata->config;  in outen_store()
380 		return -EINVAL;  in outen_store()
382 	spin_lock(&drvdata->spinlock);  in outen_store()
383 	index = config->ctiinout_sel;  in outen_store()
384 	config->ctiouten[index] = val;  in outen_store()
389 	spin_unlock(&drvdata->spinlock);  in outen_store()
401 		return -EINVAL;  in intack_store()
417 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in appclear_store()
418 	struct cti_config *config = &drvdata->config;  in appclear_store()
421 		return -EINVAL;  in appclear_store()
423 	spin_lock(&drvdata->spinlock);  in appclear_store()
426 	config->ctiappset &= ~val;  in appclear_store()
431 	spin_unlock(&drvdata->spinlock);  in appclear_store()
441 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in apppulse_store()
442 	struct cti_config *config = &drvdata->config;  in apppulse_store()
445 		return -EINVAL;  in apppulse_store()
447 	spin_lock(&drvdata->spinlock);  in apppulse_store()
452 	spin_unlock(&drvdata->spinlock);  in apppulse_store()
474 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);	\
476 	pm_runtime_get_sync(dev->parent);				\
477 	spin_lock(&drvdata->spinlock);					\
478 	if (drvdata->config.hw_powered)					\
479 		val = readl_relaxed(drvdata->base + offset);		\
480 	spin_unlock(&drvdata->spinlock);				\
481 	pm_runtime_put_sync(dev->parent);				\
489 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);	\
492 		return -EINVAL;						\
494 	pm_runtime_get_sync(dev->parent);				\
495 	spin_lock(&drvdata->spinlock);					\
496 	if (drvdata->config.hw_powered)					\
498 	spin_unlock(&drvdata->spinlock);				\
499 	pm_runtime_put_sync(dev->parent);				\
510 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);	\
513 		return -EINVAL;						\
515 	pm_runtime_get_sync(dev->parent);				\
516 	spin_lock(&drvdata->spinlock);					\
517 	if (drvdata->config.hw_powered)					\
519 	spin_unlock(&drvdata->spinlock);				\
520 	pm_runtime_put_sync(dev->parent);				\
565 /* CTI channel x-trigger programming */
572 	int items, err = -EINVAL;  in cti_trig_op_parse()
628 		return -EINVAL;  in chan_gate_enable_store()
638 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_gate_enable_show()
639 	struct cti_config *cfg = &drvdata->config;  in chan_gate_enable_show()
640 	unsigned long ctigate_bitmask = cfg->ctigate;  in chan_gate_enable_show()
643 	if (cfg->ctigate == 0)  in chan_gate_enable_show()
647 					       cfg->nr_ctm_channels);  in chan_gate_enable_show()
659 		return -EINVAL;  in chan_gate_disable_store()
672 		return -EINVAL;  in chan_op_parse()
714 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trig_filter_enable_show()
716 	spin_lock(&drvdata->spinlock);  in trig_filter_enable_show()
717 	val = drvdata->config.trig_filter_enable;  in trig_filter_enable_show()
718 	spin_unlock(&drvdata->spinlock);  in trig_filter_enable_show()
727 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trig_filter_enable_store()
730 		return -EINVAL;  in trig_filter_enable_store()
732 	spin_lock(&drvdata->spinlock);  in trig_filter_enable_store()
733 	drvdata->config.trig_filter_enable = !!val;  in trig_filter_enable_store()
734 	spin_unlock(&drvdata->spinlock);  in trig_filter_enable_store()
743 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trigout_filtered_show()
744 	struct cti_config *cfg = &drvdata->config;  in trigout_filtered_show()
745 	int size = 0, nr_trig_max = cfg->nr_trig_max;  in trigout_filtered_show()
746 	unsigned long mask = cfg->trig_out_filter;  in trigout_filtered_show()
760 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_reset_store()
761 	struct cti_config *config = &drvdata->config;  in chan_xtrigs_reset_store()
763 	spin_lock(&drvdata->spinlock);  in chan_xtrigs_reset_store()
765 	/* clear the CTI trigger / channel programming registers */  in chan_xtrigs_reset_store()
766 	for (i = 0; i < config->nr_trig_max; i++) {  in chan_xtrigs_reset_store()
767 		config->ctiinen[i] = 0;  in chan_xtrigs_reset_store()
768 		config->ctiouten[i] = 0;  in chan_xtrigs_reset_store()
772 	config->ctigate = GENMASK(config->nr_ctm_channels - 1, 0);  in chan_xtrigs_reset_store()
773 	config->asicctl = 0;  in chan_xtrigs_reset_store()
774 	config->ctiappset = 0;  in chan_xtrigs_reset_store()
775 	config->ctiinout_sel = 0;  in chan_xtrigs_reset_store()
776 	config->xtrig_rchan_sel = 0;  in chan_xtrigs_reset_store()
782 	spin_unlock(&drvdata->spinlock);  in chan_xtrigs_reset_store()
796 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_sel_store()
799 		return -EINVAL;  in chan_xtrigs_sel_store()
800 	if (val > (drvdata->config.nr_ctm_channels - 1))  in chan_xtrigs_sel_store()
801 		return -EINVAL;  in chan_xtrigs_sel_store()
803 	spin_lock(&drvdata->spinlock);  in chan_xtrigs_sel_store()
804 	drvdata->config.xtrig_rchan_sel = val;  in chan_xtrigs_sel_store()
805 	spin_unlock(&drvdata->spinlock);  in chan_xtrigs_sel_store()
814 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_sel_show()
816 	spin_lock(&drvdata->spinlock);  in chan_xtrigs_sel_show()
817 	val = drvdata->config.xtrig_rchan_sel;  in chan_xtrigs_sel_show()
818 	spin_unlock(&drvdata->spinlock);  in chan_xtrigs_sel_show()
828 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_in_show()
829 	struct cti_config *cfg = &drvdata->config;  in chan_xtrigs_in_show()
831 	int nr_trig_max = drvdata->config.nr_trig_max;  in chan_xtrigs_in_show()
832 	u32 chan_mask = BIT(cfg->xtrig_rchan_sel);  in chan_xtrigs_in_show()
835 		if (chan_mask & cfg->ctiinen[reg_idx])  in chan_xtrigs_in_show()
848 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_out_show()
849 	struct cti_config *cfg = &drvdata->config;  in chan_xtrigs_out_show()
851 	int nr_trig_max = drvdata->config.nr_trig_max;  in chan_xtrigs_out_show()
852 	u32 chan_mask = BIT(cfg->xtrig_rchan_sel);  in chan_xtrigs_out_show()
855 		if (chan_mask & cfg->ctiouten[reg_idx])  in chan_xtrigs_out_show()
867 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in print_chan_list()
868 	struct cti_config *config = &drvdata->config;  in print_chan_list()
873 	spin_lock(&drvdata->spinlock);  in print_chan_list()
874 	for (i = 0; i < config->nr_trig_max; i++) {  in print_chan_list()
875 		inuse_bits |= config->ctiinen[i];  in print_chan_list()
876 		inuse_bits |= config->ctiouten[i];  in print_chan_list()
878 	spin_unlock(&drvdata->spinlock);  in print_chan_list()
885 	chan_mask = GENMASK(config->nr_ctm_channels - 1, 0);  in print_chan_list()
888 					       config->nr_ctm_channels);  in print_chan_list()
935  * of groups. e.g. in sysfs:-
947 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in con_name_show()
949 	return sprintf(buf, "%s\n", con->con_dev_name);  in con_name_show()
958 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in trigin_sig_show()
959 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trigin_sig_show()
960 	struct cti_config *cfg = &drvdata->config;  in trigin_sig_show()
961 	unsigned long mask = con->con_in->used_mask;  in trigin_sig_show()
963 	return bitmap_print_to_pagebuf(true, buf, &mask, cfg->nr_trig_max);  in trigin_sig_show()
972 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in trigout_sig_show()
973 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trigout_sig_show()
974 	struct cti_config *cfg = &drvdata->config;  in trigout_sig_show()
975 	unsigned long mask = con->con_out->used_mask;  in trigout_sig_show()
977 	return bitmap_print_to_pagebuf(true, buf, &mask, cfg->nr_trig_max);  in trigout_sig_show()
985 	struct cti_trig_grp *grp = in ? con->con_in : con->con_out;  in cti_sig_type_name()
987 	if (used_count < grp->nr_sigs)  in cti_sig_type_name()
988 		idx = grp->sig_types[used_count];  in cti_sig_type_name()
998 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in trigin_type_show()
1002 	for (sig_idx = 0; sig_idx < con->con_in->nr_sigs; sig_idx++) {  in trigin_type_show()
1016 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in trigout_type_show()
1020 	for (sig_idx = 0; sig_idx < con->con_out->nr_sigs; sig_idx++) {  in trigout_type_show()
1055 			eattr->attr.attr.name = name;  in cti_create_con_sysfs_attr()
1056 			eattr->attr.attr.mode = 0444;  in cti_create_con_sysfs_attr()
1059 			eattr->attr.show = show_fns[attr_type];  in cti_create_con_sysfs_attr()
1061 			return -ENOMEM;  in cti_create_con_sysfs_attr()
1064 		return -ENOMEM;  in cti_create_con_sysfs_attr()
1066 	eattr->var = con;  in cti_create_con_sysfs_attr()
1067 	con->con_attrs[attr_idx] = &eattr->attr.attr;  in cti_create_con_sysfs_attr()
1073 	sysfs_attr_init(con->con_attrs[attr_idx]);  in cti_create_con_sysfs_attr()
1089 	group->name = devm_kasprintf(dev, GFP_KERNEL, "triggers%d", con_idx);  in cti_create_con_sysfs_group()
1090 	if (!group->name)  in cti_create_con_sysfs_group()
1093 	grp_idx = con_idx + CORESIGHT_CTI_STATIC_GROUPS_MAX - 1;  in cti_create_con_sysfs_group()
1094 	ctidev->con_groups[grp_idx] = group;  in cti_create_con_sysfs_group()
1095 	tc->attr_group = group;  in cti_create_con_sysfs_group()
1106 	int err = -ENOMEM;  in cti_create_con_attr_set()
1110 		return -ENOMEM;  in cti_create_con_attr_set()
1113 	tc->con_attrs = devm_kcalloc(dev, CTI_CON_ATTR_MAX + 1,  in cti_create_con_attr_set()
1115 	if (!tc->con_attrs)  in cti_create_con_attr_set()
1116 		return -ENOMEM;  in cti_create_con_attr_set()
1123 	if (tc->con_in->nr_sigs > 0) {  in cti_create_con_attr_set()
1137 	if (tc->con_out->nr_sigs > 0) {  in cti_create_con_attr_set()
1150 	attr_group->attrs = tc->con_attrs;  in cti_create_con_attr_set()
1154 /* create the array of group pointers for the CTI sysfs groups */
1160 	nr_groups = ctidev->nr_trig_con + CORESIGHT_CTI_STATIC_GROUPS_MAX;  in cti_create_cons_groups()
1161 	ctidev->con_groups = devm_kcalloc(dev, nr_groups,  in cti_create_cons_groups()
1164 	if (!ctidev->con_groups)  in cti_create_cons_groups()
1165 		return -ENOMEM;  in cti_create_cons_groups()
1171 	struct cti_device *ctidev = &drvdata->ctidev;  in cti_create_cons_sysfs()
1180 	for (i = 0; i < (CORESIGHT_CTI_STATIC_GROUPS_MAX - 1); i++)  in cti_create_cons_sysfs()
1181 		ctidev->con_groups[i] = coresight_cti_groups[i];  in cti_create_cons_sysfs()
1184 	list_for_each_entry(tc, &ctidev->trig_cons, node) {  in cti_create_cons_sysfs()