1 // SPDX-License-Identifier: GPL-2.0-only
3  * fireworks_transaction.c - a part of driver for Fireworks based devices
5  * Copyright (c) 2013-2014 Takashi Sakamoto
14  *  At first, 6 data exist. Following to the data, parameters for each command
22  *   data[6-]:	Parameters
81 	t.seqnum = be32_to_cpu(((struct snd_efw_transaction *)cmd)->seqnum) + 1;  in snd_efw_transaction_run()
104 			dev_err(&t.unit->device, "EFW transaction timed out\n");  in snd_efw_transaction_run()
105 			ret = -EIO;  in snd_efw_transaction_run()
124 	length = min_t(size_t, be32_to_cpu(t->length) * sizeof(u32), length);  in copy_resp_to_buf()
126 	spin_lock(&efw->lock);  in copy_resp_to_buf()
128 	if (efw->push_ptr < efw->pull_ptr)  in copy_resp_to_buf()
129 		capacity = (unsigned int)(efw->pull_ptr - efw->push_ptr);  in copy_resp_to_buf()
131 		capacity = snd_efw_resp_buf_size -  in copy_resp_to_buf()
132 			   (unsigned int)(efw->push_ptr - efw->pull_ptr);  in copy_resp_to_buf()
142 		till_end = snd_efw_resp_buf_size -  in copy_resp_to_buf()
143 			   (unsigned int)(efw->push_ptr - efw->resp_buf);  in copy_resp_to_buf()
146 		memcpy(efw->push_ptr, data, till_end);  in copy_resp_to_buf()
148 		efw->push_ptr += till_end;  in copy_resp_to_buf()
149 		if (efw->push_ptr >= efw->resp_buf + snd_efw_resp_buf_size)  in copy_resp_to_buf()
150 			efw->push_ptr -= snd_efw_resp_buf_size;  in copy_resp_to_buf()
152 		length -= till_end;  in copy_resp_to_buf()
157 	wake_up(&efw->hwdep_wait);  in copy_resp_to_buf()
161 	spin_unlock_irq(&efw->lock);  in copy_resp_to_buf()
165 handle_resp_for_user(struct fw_card *card, int generation, int source,  in handle_resp_for_user()  argument
178 		device = fw_parent_device(efw->unit);  in handle_resp_for_user()
179 		if ((device->card != card) ||  in handle_resp_for_user()
180 		    (device->generation != generation))  in handle_resp_for_user()
182 		smp_rmb();	/* node id vs. generation */  in handle_resp_for_user()
183 		if (device->node_id != source)  in handle_resp_for_user()
197 handle_resp_for_kernel(struct fw_card *card, int generation, int source,  in handle_resp_for_kernel()  argument
206 		device = fw_parent_device(t->unit);  in handle_resp_for_kernel()
207 		if ((device->card != card) ||  in handle_resp_for_kernel()
208 		    (device->generation != generation))  in handle_resp_for_kernel()
210 		smp_rmb();	/* node_id vs. generation */  in handle_resp_for_kernel()
211 		if (device->node_id != source)  in handle_resp_for_kernel()
214 		if ((t->state == STATE_PENDING) && (t->seqnum == seqnum)) {  in handle_resp_for_kernel()
215 			t->state = STATE_COMPLETE;  in handle_resp_for_kernel()
216 			t->size = min_t(unsigned int, length, t->size);  in handle_resp_for_kernel()
217 			memcpy(t->buf, data, t->size);  in handle_resp_for_kernel()
218 			wake_up(&t->wait);  in handle_resp_for_kernel()
228 	     int generation, unsigned long long offset,  in efw_response()  argument
243 	seqnum = be32_to_cpu(((struct snd_efw_transaction *)data)->seqnum);  in efw_response()
245 		handle_resp_for_kernel(card, generation, source,  in efw_response()
248 			handle_resp_for_user(card, generation, source,  in efw_response()
251 		handle_resp_for_user(card, generation, source,  in efw_response()
295 		if ((t->unit == unit) &&  in snd_efw_transaction_bus_reset()
296 		    (t->state == STATE_PENDING)) {  in snd_efw_transaction_bus_reset()
297 			t->state = STATE_BUS_RESET;  in snd_efw_transaction_bus_reset()
298 			wake_up(&t->wait);  in snd_efw_transaction_bus_reset()