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 	spin_lock(&drvdata->spinlock);  in enable_show()
88 	enable_req = drvdata->config.enable_req_count;  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 = pm_runtime_resume_and_get(dev->parent);  in enable_store()
115 		ret = cti_enable(drvdata->csdev, CS_MODE_SYSFS, NULL);  in enable_store()
117 			pm_runtime_put(dev->parent);  in enable_store()
119 		ret = cti_disable(drvdata->csdev, NULL);  in enable_store()
121 			pm_runtime_put(dev->parent);  in enable_store()
135 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in powered_show()
137 	spin_lock(&drvdata->spinlock);  in powered_show()
138 	powered = drvdata->config.hw_powered;  in powered_show()
139 	spin_unlock(&drvdata->spinlock);  in powered_show()
148 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in ctmid_show()
150 	return sprintf(buf, "%d\n", drvdata->ctidev.ctm_id);  in ctmid_show()
158 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in nr_trigger_cons_show()
160 	return sprintf(buf, "%d\n", drvdata->ctidev.nr_trig_con);  in nr_trigger_cons_show()
179 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in coresight_cti_reg_show()
183 	pm_runtime_get_sync(dev->parent);  in coresight_cti_reg_show()
184 	spin_lock(&drvdata->spinlock);  in coresight_cti_reg_show()
185 	if (drvdata->config.hw_powered)  in coresight_cti_reg_show()
186 		val = readl_relaxed(drvdata->base + cti_attr->off);  in coresight_cti_reg_show()
187 	spin_unlock(&drvdata->spinlock);  in coresight_cti_reg_show()
188 	pm_runtime_put_sync(dev->parent);  in coresight_cti_reg_show()
197 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in coresight_cti_reg_store()
202 		return -EINVAL;  in coresight_cti_reg_store()
204 	pm_runtime_get_sync(dev->parent);  in coresight_cti_reg_store()
205 	spin_lock(&drvdata->spinlock);  in coresight_cti_reg_store()
206 	if (drvdata->config.hw_powered)  in coresight_cti_reg_store()
207 		cti_write_single_reg(drvdata, cti_attr->off, val);  in coresight_cti_reg_store()
208 	spin_unlock(&drvdata->spinlock);  in coresight_cti_reg_store()
209 	pm_runtime_put_sync(dev->parent);  in coresight_cti_reg_store()
238 /* coresight management registers */
254 /* CTI low level programming registers */
264 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in cti_reg32_show()
265 	struct cti_config *config = &drvdata->config;  in cti_reg32_show()
267 	spin_lock(&drvdata->spinlock);  in cti_reg32_show()
269 		CS_UNLOCK(drvdata->base);  in cti_reg32_show()
270 		val = readl_relaxed(drvdata->base + reg_offset);  in cti_reg32_show()
273 		CS_LOCK(drvdata->base);  in cti_reg32_show()
277 	spin_unlock(&drvdata->spinlock);  in cti_reg32_show()
290 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in cti_reg32_store()
291 	struct cti_config *config = &drvdata->config;  in cti_reg32_store()
294 		return -EINVAL;  in cti_reg32_store()
296 	spin_lock(&drvdata->spinlock);  in cti_reg32_store()
304 	spin_unlock(&drvdata->spinlock);  in cti_reg32_store()
308 /* Standard macro for simple rw cti config registers */
314 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);	\
316 			      &drvdata->config.cfgname, offset);	\
323 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);	\
325 			       &drvdata->config.cfgname, offset);	\
334 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in inout_sel_show()
336 	val = (u32)drvdata->config.ctiinout_sel;  in inout_sel_show()
345 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in inout_sel_store()
348 		return -EINVAL;  in inout_sel_store()
349 	if (val > (CTIINOUTEN_MAX - 1))  in inout_sel_store()
350 		return -EINVAL;  in inout_sel_store()
352 	spin_lock(&drvdata->spinlock);  in inout_sel_store()
353 	drvdata->config.ctiinout_sel = val;  in inout_sel_store()
354 	spin_unlock(&drvdata->spinlock);  in inout_sel_store()
365 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in inen_show()
367 	spin_lock(&drvdata->spinlock);  in inen_show()
368 	index = drvdata->config.ctiinout_sel;  in inen_show()
369 	val = drvdata->config.ctiinen[index];  in inen_show()
370 	spin_unlock(&drvdata->spinlock);  in inen_show()
380 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in inen_store()
381 	struct cti_config *config = &drvdata->config;  in inen_store()
384 		return -EINVAL;  in inen_store()
386 	spin_lock(&drvdata->spinlock);  in inen_store()
387 	index = config->ctiinout_sel;  in inen_store()
388 	config->ctiinen[index] = val;  in inen_store()
393 	spin_unlock(&drvdata->spinlock);  in inen_store()
404 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in outen_show()
406 	spin_lock(&drvdata->spinlock);  in outen_show()
407 	index = drvdata->config.ctiinout_sel;  in outen_show()
408 	val = drvdata->config.ctiouten[index];  in outen_show()
409 	spin_unlock(&drvdata->spinlock);  in outen_show()
419 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in outen_store()
420 	struct cti_config *config = &drvdata->config;  in outen_store()
423 		return -EINVAL;  in outen_store()
425 	spin_lock(&drvdata->spinlock);  in outen_store()
426 	index = config->ctiinout_sel;  in outen_store()
427 	config->ctiouten[index] = val;  in outen_store()
432 	spin_unlock(&drvdata->spinlock);  in outen_store()
444 		return -EINVAL;  in intack_store()
460 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in appclear_store()
461 	struct cti_config *config = &drvdata->config;  in appclear_store()
464 		return -EINVAL;  in appclear_store()
466 	spin_lock(&drvdata->spinlock);  in appclear_store()
469 	config->ctiappset &= ~val;  in appclear_store()
474 	spin_unlock(&drvdata->spinlock);  in appclear_store()
484 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in apppulse_store()
485 	struct cti_config *config = &drvdata->config;  in apppulse_store()
488 		return -EINVAL;  in apppulse_store()
490 	spin_lock(&drvdata->spinlock);  in apppulse_store()
495 	spin_unlock(&drvdata->spinlock);  in apppulse_store()
533 /* CTI channel x-trigger programming */
540 	int items, err = -EINVAL;  in cti_trig_op_parse()
596 		return -EINVAL;  in chan_gate_enable_store()
606 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_gate_enable_show()
607 	struct cti_config *cfg = &drvdata->config;  in chan_gate_enable_show()
608 	unsigned long ctigate_bitmask = cfg->ctigate;  in chan_gate_enable_show()
611 	if (cfg->ctigate == 0)  in chan_gate_enable_show()
615 					       cfg->nr_ctm_channels);  in chan_gate_enable_show()
627 		return -EINVAL;  in chan_gate_disable_store()
640 		return -EINVAL;  in chan_op_parse()
682 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trig_filter_enable_show()
684 	spin_lock(&drvdata->spinlock);  in trig_filter_enable_show()
685 	val = drvdata->config.trig_filter_enable;  in trig_filter_enable_show()
686 	spin_unlock(&drvdata->spinlock);  in trig_filter_enable_show()
695 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trig_filter_enable_store()
698 		return -EINVAL;  in trig_filter_enable_store()
700 	spin_lock(&drvdata->spinlock);  in trig_filter_enable_store()
701 	drvdata->config.trig_filter_enable = !!val;  in trig_filter_enable_store()
702 	spin_unlock(&drvdata->spinlock);  in trig_filter_enable_store()
711 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trigout_filtered_show()
712 	struct cti_config *cfg = &drvdata->config;  in trigout_filtered_show()
713 	int size = 0, nr_trig_max = cfg->nr_trig_max;  in trigout_filtered_show()
714 	unsigned long mask = cfg->trig_out_filter;  in trigout_filtered_show()
728 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_reset_store()
729 	struct cti_config *config = &drvdata->config;  in chan_xtrigs_reset_store()
731 	spin_lock(&drvdata->spinlock);  in chan_xtrigs_reset_store()
733 	/* clear the CTI trigger / channel programming registers */  in chan_xtrigs_reset_store()
734 	for (i = 0; i < config->nr_trig_max; i++) {  in chan_xtrigs_reset_store()
735 		config->ctiinen[i] = 0;  in chan_xtrigs_reset_store()
736 		config->ctiouten[i] = 0;  in chan_xtrigs_reset_store()
740 	config->ctigate = GENMASK(config->nr_ctm_channels - 1, 0);  in chan_xtrigs_reset_store()
741 	config->asicctl = 0;  in chan_xtrigs_reset_store()
742 	config->ctiappset = 0;  in chan_xtrigs_reset_store()
743 	config->ctiinout_sel = 0;  in chan_xtrigs_reset_store()
744 	config->xtrig_rchan_sel = 0;  in chan_xtrigs_reset_store()
750 	spin_unlock(&drvdata->spinlock);  in chan_xtrigs_reset_store()
764 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_sel_store()
767 		return -EINVAL;  in chan_xtrigs_sel_store()
768 	if (val > (drvdata->config.nr_ctm_channels - 1))  in chan_xtrigs_sel_store()
769 		return -EINVAL;  in chan_xtrigs_sel_store()
771 	spin_lock(&drvdata->spinlock);  in chan_xtrigs_sel_store()
772 	drvdata->config.xtrig_rchan_sel = val;  in chan_xtrigs_sel_store()
773 	spin_unlock(&drvdata->spinlock);  in chan_xtrigs_sel_store()
782 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_sel_show()
784 	spin_lock(&drvdata->spinlock);  in chan_xtrigs_sel_show()
785 	val = drvdata->config.xtrig_rchan_sel;  in chan_xtrigs_sel_show()
786 	spin_unlock(&drvdata->spinlock);  in chan_xtrigs_sel_show()
796 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_in_show()
797 	struct cti_config *cfg = &drvdata->config;  in chan_xtrigs_in_show()
799 	int nr_trig_max = drvdata->config.nr_trig_max;  in chan_xtrigs_in_show()
800 	u32 chan_mask = BIT(cfg->xtrig_rchan_sel);  in chan_xtrigs_in_show()
803 		if (chan_mask & cfg->ctiinen[reg_idx])  in chan_xtrigs_in_show()
816 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in chan_xtrigs_out_show()
817 	struct cti_config *cfg = &drvdata->config;  in chan_xtrigs_out_show()
819 	int nr_trig_max = drvdata->config.nr_trig_max;  in chan_xtrigs_out_show()
820 	u32 chan_mask = BIT(cfg->xtrig_rchan_sel);  in chan_xtrigs_out_show()
823 		if (chan_mask & cfg->ctiouten[reg_idx])  in chan_xtrigs_out_show()
835 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in print_chan_list()
836 	struct cti_config *config = &drvdata->config;  in print_chan_list()
841 	spin_lock(&drvdata->spinlock);  in print_chan_list()
842 	for (i = 0; i < config->nr_trig_max; i++) {  in print_chan_list()
843 		inuse_bits |= config->ctiinen[i];  in print_chan_list()
844 		inuse_bits |= config->ctiouten[i];  in print_chan_list()
846 	spin_unlock(&drvdata->spinlock);  in print_chan_list()
853 	chan_mask = GENMASK(config->nr_ctm_channels - 1, 0);  in print_chan_list()
856 					       config->nr_ctm_channels);  in print_chan_list()
903  * of groups. e.g. in sysfs:-
915 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in con_name_show()
917 	return sprintf(buf, "%s\n", con->con_dev_name);  in con_name_show()
926 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in trigin_sig_show()
927 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trigin_sig_show()
928 	struct cti_config *cfg = &drvdata->config;  in trigin_sig_show()
929 	unsigned long mask = con->con_in->used_mask;  in trigin_sig_show()
931 	return bitmap_print_to_pagebuf(true, buf, &mask, cfg->nr_trig_max);  in trigin_sig_show()
940 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in trigout_sig_show()
941 	struct cti_drvdata *drvdata = dev_get_drvdata(dev->parent);  in trigout_sig_show()
942 	struct cti_config *cfg = &drvdata->config;  in trigout_sig_show()
943 	unsigned long mask = con->con_out->used_mask;  in trigout_sig_show()
945 	return bitmap_print_to_pagebuf(true, buf, &mask, cfg->nr_trig_max);  in trigout_sig_show()
953 	struct cti_trig_grp *grp = in ? con->con_in : con->con_out;  in cti_sig_type_name()
955 	if (used_count < grp->nr_sigs)  in cti_sig_type_name()
956 		idx = grp->sig_types[used_count];  in cti_sig_type_name()
966 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in trigin_type_show()
970 	for (sig_idx = 0; sig_idx < con->con_in->nr_sigs; sig_idx++) {  in trigin_type_show()
984 	struct cti_trig_con *con = (struct cti_trig_con *)ext_attr->var;  in trigout_type_show()
988 	for (sig_idx = 0; sig_idx < con->con_out->nr_sigs; sig_idx++) {  in trigout_type_show()
1023 			eattr->attr.attr.name = name;  in cti_create_con_sysfs_attr()
1024 			eattr->attr.attr.mode = 0444;  in cti_create_con_sysfs_attr()
1027 			eattr->attr.show = show_fns[attr_type];  in cti_create_con_sysfs_attr()
1029 			return -ENOMEM;  in cti_create_con_sysfs_attr()
1032 		return -ENOMEM;  in cti_create_con_sysfs_attr()
1034 	eattr->var = con;  in cti_create_con_sysfs_attr()
1035 	con->con_attrs[attr_idx] = &eattr->attr.attr;  in cti_create_con_sysfs_attr()
1041 	sysfs_attr_init(con->con_attrs[attr_idx]);  in cti_create_con_sysfs_attr()
1057 	group->name = devm_kasprintf(dev, GFP_KERNEL, "triggers%d", con_idx);  in cti_create_con_sysfs_group()
1058 	if (!group->name)  in cti_create_con_sysfs_group()
1061 	grp_idx = con_idx + CORESIGHT_CTI_STATIC_GROUPS_MAX - 1;  in cti_create_con_sysfs_group()
1062 	ctidev->con_groups[grp_idx] = group;  in cti_create_con_sysfs_group()
1063 	tc->attr_group = group;  in cti_create_con_sysfs_group()
1074 	int err = -ENOMEM;  in cti_create_con_attr_set()
1078 		return -ENOMEM;  in cti_create_con_attr_set()
1081 	tc->con_attrs = devm_kcalloc(dev, CTI_CON_ATTR_MAX + 1,  in cti_create_con_attr_set()
1083 	if (!tc->con_attrs)  in cti_create_con_attr_set()
1084 		return -ENOMEM;  in cti_create_con_attr_set()
1091 	if (tc->con_in->nr_sigs > 0) {  in cti_create_con_attr_set()
1105 	if (tc->con_out->nr_sigs > 0) {  in cti_create_con_attr_set()
1118 	attr_group->attrs = tc->con_attrs;  in cti_create_con_attr_set()
1122 /* create the array of group pointers for the CTI sysfs groups */
1128 	nr_groups = ctidev->nr_trig_con + CORESIGHT_CTI_STATIC_GROUPS_MAX;  in cti_create_cons_groups()
1129 	ctidev->con_groups = devm_kcalloc(dev, nr_groups,  in cti_create_cons_groups()
1132 	if (!ctidev->con_groups)  in cti_create_cons_groups()
1133 		return -ENOMEM;  in cti_create_cons_groups()
1139 	struct cti_device *ctidev = &drvdata->ctidev;  in cti_create_cons_sysfs()
1148 	for (i = 0; i < (CORESIGHT_CTI_STATIC_GROUPS_MAX - 1); i++)  in cti_create_cons_sysfs()
1149 		ctidev->con_groups[i] = coresight_cti_groups[i];  in cti_create_cons_sysfs()
1152 	list_for_each_entry(tc, &ctidev->trig_cons, node) {  in cti_create_cons_sysfs()