1 // SPDX-License-Identifier: GPL-2.0+
20 /* Each entry in the following struct defines properties for a given speed
24 	/* Number of devices that requires this speed. */
27 	/* Array of devices that requires this speed. */
30 	/* Number of slots required for one device running this speed. */
33 	/* Gap between two slots for one device running this speed. */
49 		return -EINVAL;  in lan969x_dsm_cal_idx_get()
58 	return -ENOENT;  in lan969x_dsm_cal_idx_get()
61 static enum lan969x_dsm_cal_dev lan969x_dsm_cal_get_dev(int speed)  in lan969x_dsm_cal_get_dev()  argument
63 	return (speed == 10000 ? DSM_CAL_DEV_10G :  in lan969x_dsm_cal_get_dev()
64 		speed == 5000  ? DSM_CAL_DEV_5G :  in lan969x_dsm_cal_get_dev()
65 		speed == 2500  ? DSM_CAL_DEV_2G5 :  in lan969x_dsm_cal_get_dev()
82 	struct lan969x_dsm_cal_dev_speed *speed;  in lan969x_dsm_calendar_calc()  local
86 	taxi_bw = (128 * 1000000) / sparx5_clk_period(sparx5->coreclock);  in lan969x_dsm_calendar_calc()
88 	memcpy(data->taxi_ports, &lan969x_taxi_ports[taxi],  in lan969x_dsm_calendar_calc()
92 		u32 portno = data->taxi_ports[i];  in lan969x_dsm_calendar_calc()
97 		if (portno < sparx5->data->consts->n_ports_all)  in lan969x_dsm_calendar_calc()
98 			data->taxi_speeds[i] = sparx5_cal_speed_to_value(bw);  in lan969x_dsm_calendar_calc()
100 			data->taxi_speeds[i] = 0;  in lan969x_dsm_calendar_calc()
104 	 * this taxi map.  in lan969x_dsm_calendar_calc()
107 		u32 taxi_speed = data->taxi_speeds[i];  in lan969x_dsm_calendar_calc()
116 		speed = &dev_speeds[dev];  in lan969x_dsm_calendar_calc()
117 		speed->devs[speed->n_devs++] = i;  in lan969x_dsm_calendar_calc()
124 		return -EINVAL;  in lan969x_dsm_calendar_calc()
128 		data->schedule[0] = SPX5_DSM_CAL_EMPTY;  in lan969x_dsm_calendar_calc()
141 			speed = &dev_speeds[i];  in lan969x_dsm_calendar_calc()
143 			if (speed->n_devs == 0)  in lan969x_dsm_calendar_calc()
147 			speed->n_slots = DIV_ROUND_UP(required_bw, bw_per_slot);  in lan969x_dsm_calendar_calc()
149 			if (speed->n_slots)  in lan969x_dsm_calendar_calc()
150 				speed->gap = DIV_ROUND_UP(cal_len,  in lan969x_dsm_calendar_calc()
151 							  speed->n_slots);  in lan969x_dsm_calendar_calc()
153 				speed->gap = 0;  in lan969x_dsm_calendar_calc()
155 			n_slots += speed->n_slots * speed->n_devs;  in lan969x_dsm_calendar_calc()
167 		return -EINVAL;  in lan969x_dsm_calendar_calc()
171 		data->schedule[i] = SPX5_DSM_CAL_EMPTY;  in lan969x_dsm_calendar_calc()
175 		speed = &dev_speeds[i];  in lan969x_dsm_calendar_calc()
176 		for (u32 dev = 0; dev < speed->n_devs; dev++) {  in lan969x_dsm_calendar_calc()
179 			for (n_slots = 0; n_slots < speed->n_slots; n_slots++) {  in lan969x_dsm_calendar_calc()
180 				err = lan969x_dsm_cal_idx_get(data->schedule,  in lan969x_dsm_calendar_calc()
184 				data->schedule[idx] = speed->devs[dev];  in lan969x_dsm_calendar_calc()
185 				idx += speed->gap;  in lan969x_dsm_calendar_calc()