13 static void snd_gf1_interrupt_midi_in(struct snd_gus_card * gus)  in snd_gf1_interrupt_midi_in()  argument
22 		spin_lock_irqsave(&gus->uart_cmd_lock, flags);  in snd_gf1_interrupt_midi_in()
23 		stat = snd_gf1_uart_stat(gus);  in snd_gf1_interrupt_midi_in()
25 			spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_interrupt_midi_in()
30 		data = snd_gf1_uart_get(gus);  in snd_gf1_interrupt_midi_in()
31 		if (!(gus->gf1.uart_cmd & 0x80)) {  in snd_gf1_interrupt_midi_in()
32 			spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_interrupt_midi_in()
36 			gus->gf1.uart_framing++;  in snd_gf1_interrupt_midi_in()
37 			spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_interrupt_midi_in()
40 		byte = snd_gf1_uart_get(gus);  in snd_gf1_interrupt_midi_in()
41 		spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_interrupt_midi_in()
42 		snd_rawmidi_receive(gus->midi_substream_input, &byte, 1);  in snd_gf1_interrupt_midi_in()
44 			gus->gf1.uart_overrun++;  in snd_gf1_interrupt_midi_in()
49 static void snd_gf1_interrupt_midi_out(struct snd_gus_card * gus)  in snd_gf1_interrupt_midi_out()  argument
55 	if (snd_gf1_uart_stat(gus) & 0x01)  in snd_gf1_interrupt_midi_out()
56 		snd_gf1_interrupt_midi_in(gus);  in snd_gf1_interrupt_midi_out()
58 	spin_lock_irqsave(&gus->uart_cmd_lock, flags);  in snd_gf1_interrupt_midi_out()
59 	if (snd_gf1_uart_stat(gus) & 0x02) {	/* Tx FIFO free? */  in snd_gf1_interrupt_midi_out()
60 …if (snd_rawmidi_transmit(gus->midi_substream_output, &byte, 1) != 1) {	/* no other bytes or error …  in snd_gf1_interrupt_midi_out()
61 			snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd & ~0x20); /* disable Tx interrupt */  in snd_gf1_interrupt_midi_out()
63 			snd_gf1_uart_put(gus, byte);  in snd_gf1_interrupt_midi_out()
66 	spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_interrupt_midi_out()
69 static void snd_gf1_uart_reset(struct snd_gus_card * gus, int close)  in snd_gf1_uart_reset()  argument
71 	snd_gf1_uart_cmd(gus, 0x03);	/* reset */  in snd_gf1_uart_reset()
72 	if (!close && gus->uart_enable) {  in snd_gf1_uart_reset()
74 		snd_gf1_uart_cmd(gus, 0x00);	/* normal operations */  in snd_gf1_uart_reset()
81 	struct snd_gus_card *gus;  in snd_gf1_uart_output_open()  local
83 	gus = substream->rmidi->private_data;  in snd_gf1_uart_output_open()
84 	spin_lock_irqsave(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_open()
85 	if (!(gus->gf1.uart_cmd & 0x80)) {	/* input active? */  in snd_gf1_uart_output_open()
86 		snd_gf1_uart_reset(gus, 0);  in snd_gf1_uart_output_open()
88 	gus->gf1.interrupt_handler_midi_out = snd_gf1_interrupt_midi_out;  in snd_gf1_uart_output_open()
89 	gus->midi_substream_output = substream;  in snd_gf1_uart_output_open()
90 	spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_open()
92 	dev_dbg(gus->card->dev,  in snd_gf1_uart_output_open()
94 		gus->gf1.uart_cmd, snd_gf1_uart_stat(gus));  in snd_gf1_uart_output_open()
102 	struct snd_gus_card *gus;  in snd_gf1_uart_input_open()  local
105 	gus = substream->rmidi->private_data;  in snd_gf1_uart_input_open()
106 	spin_lock_irqsave(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_input_open()
107 	if (gus->gf1.interrupt_handler_midi_out != snd_gf1_interrupt_midi_out) {  in snd_gf1_uart_input_open()
108 		snd_gf1_uart_reset(gus, 0);  in snd_gf1_uart_input_open()
110 	gus->gf1.interrupt_handler_midi_in = snd_gf1_interrupt_midi_in;  in snd_gf1_uart_input_open()
111 	gus->midi_substream_input = substream;  in snd_gf1_uart_input_open()
112 	if (gus->uart_enable) {  in snd_gf1_uart_input_open()
113 		for (i = 0; i < 1000 && (snd_gf1_uart_stat(gus) & 0x01); i++)  in snd_gf1_uart_input_open()
114 			snd_gf1_uart_get(gus);	/* clean Rx */  in snd_gf1_uart_input_open()
116 			dev_err(gus->card->dev, "gus midi uart init read - cleanup error\n");  in snd_gf1_uart_input_open()
118 	spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_input_open()
120 	dev_dbg(gus->card->dev,  in snd_gf1_uart_input_open()
122 		gus->uart_enable, gus->gf1.uart_cmd, snd_gf1_uart_stat(gus));  in snd_gf1_uart_input_open()
123 	dev_dbg(gus->card->dev,  in snd_gf1_uart_input_open()
125 		gus->gf1.port + 0x100, inb(gus->gf1.port + 0x100),  in snd_gf1_uart_input_open()
126 		inb(gus->gf1.port + 0x101), inb(gus->gf1.port + 0x102));  in snd_gf1_uart_input_open()
134 	struct snd_gus_card *gus;  in snd_gf1_uart_output_close()  local
136 	gus = substream->rmidi->private_data;  in snd_gf1_uart_output_close()
137 	spin_lock_irqsave(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_close()
138 	if (gus->gf1.interrupt_handler_midi_in != snd_gf1_interrupt_midi_in)  in snd_gf1_uart_output_close()
139 		snd_gf1_uart_reset(gus, 1);  in snd_gf1_uart_output_close()
140 	snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_MIDI_OUT);  in snd_gf1_uart_output_close()
141 	gus->midi_substream_output = NULL;  in snd_gf1_uart_output_close()
142 	spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_close()
149 	struct snd_gus_card *gus;  in snd_gf1_uart_input_close()  local
151 	gus = substream->rmidi->private_data;  in snd_gf1_uart_input_close()
152 	spin_lock_irqsave(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_input_close()
153 	if (gus->gf1.interrupt_handler_midi_out != snd_gf1_interrupt_midi_out)  in snd_gf1_uart_input_close()
154 		snd_gf1_uart_reset(gus, 1);  in snd_gf1_uart_input_close()
155 	snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_MIDI_IN);  in snd_gf1_uart_input_close()
156 	gus->midi_substream_input = NULL;  in snd_gf1_uart_input_close()
157 	spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_input_close()
163 	struct snd_gus_card *gus;  in snd_gf1_uart_input_trigger()  local
166 	gus = substream->rmidi->private_data;  in snd_gf1_uart_input_trigger()
168 	spin_lock_irqsave(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_input_trigger()
170 		if ((gus->gf1.uart_cmd & 0x80) == 0)  in snd_gf1_uart_input_trigger()
171 			snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd | 0x80); /* enable Rx interrupts */  in snd_gf1_uart_input_trigger()
173 		if (gus->gf1.uart_cmd & 0x80)  in snd_gf1_uart_input_trigger()
174 			snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd & ~0x80); /* disable Rx interrupts */  in snd_gf1_uart_input_trigger()
176 	spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_input_trigger()
182 	struct snd_gus_card *gus;  in snd_gf1_uart_output_trigger()  local
186 	gus = substream->rmidi->private_data;  in snd_gf1_uart_output_trigger()
188 	spin_lock_irqsave(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_trigger()
190 		if ((gus->gf1.uart_cmd & 0x20) == 0) {  in snd_gf1_uart_output_trigger()
191 			spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_trigger()
194 			while (timeout-- > 0 && snd_gf1_uart_stat(gus) & 0x01);  in snd_gf1_uart_output_trigger()
196 			spin_lock_irqsave(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_trigger()
197 			if (gus->gf1.uart_cmd & 0x20) {  in snd_gf1_uart_output_trigger()
198 				spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_trigger()
201 			if (snd_gf1_uart_stat(gus) & 0x02) {  in snd_gf1_uart_output_trigger()
203 					spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_trigger()
206 				snd_gf1_uart_put(gus, byte);  in snd_gf1_uart_output_trigger()
208 			snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd | 0x20);	/* enable Tx interrupt */  in snd_gf1_uart_output_trigger()
211 		if (gus->gf1.uart_cmd & 0x20)  in snd_gf1_uart_output_trigger()
212 			snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd & ~0x20);  in snd_gf1_uart_output_trigger()
214 	spin_unlock_irqrestore(&gus->uart_cmd_lock, flags);  in snd_gf1_uart_output_trigger()
231 int snd_gf1_rawmidi_new(struct snd_gus_card *gus, int device)  in snd_gf1_rawmidi_new()  argument
236 	err = snd_rawmidi_new(gus->card, "GF1", device, 1, 1, &rmidi);  in snd_gf1_rawmidi_new()
239 	strcpy(rmidi->name, gus->interwave ? "AMD InterWave" : "GF1");  in snd_gf1_rawmidi_new()
243 	rmidi->private_data = gus;  in snd_gf1_rawmidi_new()
244 	gus->midi_uart = rmidi;  in snd_gf1_rawmidi_new()