44 #define get_msci(port)	  ((port)->chan ?   MSCI1_OFFSET :   MSCI0_OFFSET)  argument
45 #define get_dmac_rx(port) ((port)->chan ? DMAC1RX_OFFSET : DMAC0RX_OFFSET)  argument
46 #define get_dmac_tx(port) ((port)->chan ? DMAC1TX_OFFSET : DMAC0TX_OFFSET)  argument
62 static inline void enable_intr(port_t *port)  in enable_intr()  argument
65 	sca_outl(sca_inl(IER0, port->card) |  in enable_intr()
66 		 (port->chan ? 0x08002200 : 0x00080022), IER0, port->card);  in enable_intr()
69 static inline void disable_intr(port_t *port)  in disable_intr()  argument
71 	sca_outl(sca_inl(IER0, port->card) &  in disable_intr()
72 		 (port->chan ? 0x00FF00FF : 0xFF00FF00), IER0, port->card);  in disable_intr()
75 static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit)  in desc_abs_number()  argument
77 	u16 rx_buffs = port->card->rx_ring_buffers;  in desc_abs_number()
78 	u16 tx_buffs = port->card->tx_ring_buffers;  in desc_abs_number()
81 	return port->chan * (rx_buffs + tx_buffs) + transmit * rx_buffs + desc;  in desc_abs_number()
84 static inline u16 desc_offset(port_t *port, u16 desc, int transmit)  in desc_offset()  argument
87 	return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc);  in desc_offset()
90 static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc,  in desc_address()  argument
93 	return (pkt_desc __iomem *)(port->card->rambase +  in desc_address()
94 				    desc_offset(port, desc, transmit));  in desc_address()
97 static inline u32 buffer_offset(port_t *port, u16 desc, int transmit)  in buffer_offset()  argument
99 	return port->card->buff_offset +  in buffer_offset()
100 		desc_abs_number(port, desc, transmit) * (u32)HDLC_MAX_MRU;  in buffer_offset()
103 static inline void sca_set_carrier(port_t *port)  in sca_set_carrier()  argument
105 	if (!(sca_in(get_msci(port) + ST3, port->card) & ST3_DCD)) {  in sca_set_carrier()
108 		       port->netdev.name);  in sca_set_carrier()
110 		netif_carrier_on(port->netdev);  in sca_set_carrier()
114 		       port->netdev.name);  in sca_set_carrier()
116 		netif_carrier_off(port->netdev);  in sca_set_carrier()
120 static void sca_init_port(port_t *port)  in sca_init_port()  argument
122 	card_t *card = port->card;  in sca_init_port()
123 	u16 dmac_rx = get_dmac_rx(port), dmac_tx = get_dmac_tx(port);  in sca_init_port()
126 	port->rxin = 0;  in sca_init_port()
127 	port->txin = 0;  in sca_init_port()
128 	port->txlast = 0;  in sca_init_port()
135 			pkt_desc __iomem *desc = desc_address(port, i, transmit);  in sca_init_port()
136 			u16 chain_off = desc_offset(port, i + 1, transmit);  in sca_init_port()
137 			u32 buff_off = buffer_offset(port, i, transmit);  in sca_init_port()
147 	sca_out(0, DSR_RX(port->chan), card);  in sca_init_port()
148 	sca_out(0, DSR_TX(port->chan), card);  in sca_init_port()
151 	sca_out(DCR_ABORT, DCR_RX(port->chan), card);  in sca_init_port()
152 	sca_out(DCR_ABORT, DCR_TX(port->chan), card);  in sca_init_port()
155 	sca_outl(desc_offset(port, 0, 0), dmac_rx + CDAL, card);  in sca_init_port()
156 	sca_outl(desc_offset(port, card->tx_ring_buffers - 1, 0),  in sca_init_port()
158 	sca_outl(desc_offset(port, 0, 1), dmac_tx + CDAL, card);  in sca_init_port()
159 	sca_outl(desc_offset(port, 0, 1), dmac_tx + EDAL, card);  in sca_init_port()
162 	sca_out(DCR_CLEAR_EOF, DCR_RX(port->chan), card);  in sca_init_port()
163 	sca_out(DCR_CLEAR_EOF, DCR_TX(port->chan), card);  in sca_init_port()
167 	sca_out(0x14, DMR_RX(port->chan), card); /* Chain mode, Multi-frame */  in sca_init_port()
168 	sca_out(DIR_EOME, DIR_RX(port->chan), card); /* enable interrupts */  in sca_init_port()
169 	sca_out(DSR_DE, DSR_RX(port->chan), card); /* DMA enable */  in sca_init_port()
172 	sca_out(0x14, DMR_TX(port->chan), card); /* Chain mode, Multi-frame */  in sca_init_port()
173 	sca_out(DIR_EOME, DIR_TX(port->chan), card); /* enable interrupts */  in sca_init_port()
175 	sca_set_carrier(port);  in sca_init_port()
176 	netif_napi_add_weight(port->netdev, &port->napi, sca_poll,  in sca_init_port()
181 static inline void sca_msci_intr(port_t *port)  in sca_msci_intr()  argument
183 	u16 msci = get_msci(port);  in sca_msci_intr()
184 	card_t *card = port->card;  in sca_msci_intr()
189 		sca_set_carrier(port);  in sca_msci_intr()
193 static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc,  in sca_rx()  argument
196 	struct net_device *dev = port->netdev;  in sca_rx()
208 	buff = buffer_offset(port, rxin, 0);  in sca_rx()
223 static inline int sca_rx_done(port_t *port, int budget)  in sca_rx_done()  argument
225 	struct net_device *dev = port->netdev;  in sca_rx_done()
226 	u16 dmac = get_dmac_rx(port);  in sca_rx_done()
227 	card_t *card = port->card;  in sca_rx_done()
228 	u8 stat = sca_in(DSR_RX(port->chan), card); /* read DMA Status */  in sca_rx_done()
233 		DSR_RX(port->chan), card);  in sca_rx_done()
240 		u32 desc_off = desc_offset(port, port->rxin, 0);  in sca_rx_done()
247 		desc = desc_address(port, port->rxin, 0);  in sca_rx_done()
250 			port->rxpart = 1; /* partial frame received */  in sca_rx_done()
251 		else if ((stat & ST_ERROR_MASK) || port->rxpart) {  in sca_rx_done()
256 					  ST_RX_RESBIT)) || port->rxpart)  in sca_rx_done()
261 				port->rxpart = 0; /* received last fragment */  in sca_rx_done()
263 			sca_rx(card, port, desc, port->rxin);  in sca_rx_done()
269 		port->rxin = (port->rxin + 1) % card->rx_ring_buffers;  in sca_rx_done()
273 	sca_out(DSR_DE, DSR_RX(port->chan), card);  in sca_rx_done()
278 static inline void sca_tx_done(port_t *port)  in sca_tx_done()  argument
280 	struct net_device *dev = port->netdev;  in sca_tx_done()
281 	card_t *card = port->card;  in sca_tx_done()
285 	spin_lock(&port->lock);  in sca_tx_done()
287 	stat = sca_in(DSR_TX(port->chan), card); /* read DMA Status */  in sca_tx_done()
291 		DSR_TX(port->chan), card);  in sca_tx_done()
294 		pkt_desc __iomem *desc = desc_address(port, port->txlast, 1);  in sca_tx_done()
308 		port->txlast = (port->txlast + 1) % card->tx_ring_buffers;  in sca_tx_done()
313 	spin_unlock(&port->lock);  in sca_tx_done()
318 	port_t *port = container_of(napi, port_t, napi);  in sca_poll()  local
319 	u32 isr0 = sca_inl(ISR0, port->card);  in sca_poll()
322 	if (isr0 & (port->chan ? 0x08000000 : 0x00080000))  in sca_poll()
323 		sca_msci_intr(port);  in sca_poll()
325 	if (isr0 & (port->chan ? 0x00002000 : 0x00000020))  in sca_poll()
326 		sca_tx_done(port);  in sca_poll()
328 	if (isr0 & (port->chan ? 0x00000200 : 0x00000002))  in sca_poll()
329 		received = sca_rx_done(port, budget);  in sca_poll()
333 		enable_intr(port);  in sca_poll()
346 		port_t *port = get_port(card, i);  in sca_intr()  local
347 		if (port && (isr0 & (i ? 0x08002200 : 0x00080022))) {  in sca_intr()
349 			disable_intr(port);  in sca_intr()
350 			napi_schedule(&port->napi);  in sca_intr()
357 static void sca_set_port(port_t *port)  in sca_set_port()  argument
359 	card_t *card = port->card;  in sca_set_port()
360 	u16 msci = get_msci(port);  in sca_set_port()
364 	if (port->settings.clock_rate > 0) {  in sca_set_port()
371 			tmc = CLOCK_BASE / brv / port->settings.clock_rate;  in sca_set_port()
382 		port->settings.clock_rate = CLOCK_BASE / brv / tmc;  in sca_set_port()
386 		port->settings.clock_rate = CLOCK_BASE / (256 * 512);  in sca_set_port()
389 	port->rxs = (port->rxs & ~CLK_BRG_MASK) | br;  in sca_set_port()
390 	port->txs = (port->txs & ~CLK_BRG_MASK) | br;  in sca_set_port()
391 	port->tmc = tmc;  in sca_set_port()
394 	sca_out(port->tmc, msci + TMCR, card);  in sca_set_port()
395 	sca_out(port->tmc, msci + TMCT, card);  in sca_set_port()
398 	sca_out(port->rxs, msci + RXS, card);  in sca_set_port()
399 	sca_out(port->txs, msci + TXS, card);  in sca_set_port()
401 	if (port->settings.loopback)  in sca_set_port()
411 	port_t *port = dev_to_port(dev);  in sca_open()  local
412 	card_t *card = port->card;  in sca_open()
413 	u16 msci = get_msci(port);  in sca_open()
416 	switch (port->encoding) {  in sca_open()
433 	if (port->settings.loopback)  in sca_open()
436 	switch (port->parity) {  in sca_open()
472 	sca_out(port->tmc, msci + TMCR, card);  in sca_open()
473 	sca_out(port->tmc, msci + TMCT, card);  in sca_open()
474 	sca_out(port->rxs, msci + RXS, card);  in sca_open()
475 	sca_out(port->txs, msci + TXS, card);  in sca_open()
479 	sca_set_carrier(port);  in sca_open()
480 	enable_intr(port);  in sca_open()
481 	napi_enable(&port->napi);  in sca_open()
487 	port_t *port = dev_to_port(dev);  in sca_close()  local
490 	sca_out(CMD_RESET, get_msci(port) + CMD, port->card);  in sca_close()
491 	disable_intr(port);  in sca_close()
492 	napi_disable(&port->napi);  in sca_close()
521 	port_t *port = dev_to_port(dev);  in sca_dump_rings()  local
522 	card_t *card = port->card;  in sca_dump_rings()
526 	       sca_inl(get_dmac_rx(port) + CDAL, card),  in sca_dump_rings()
527 	       sca_inl(get_dmac_rx(port) + EDAL, card),  in sca_dump_rings()
528 	       sca_in(DSR_RX(port->chan), card), port->rxin,  in sca_dump_rings()
529 	       sca_in(DSR_RX(port->chan), card) & DSR_DE ? "" : "in");  in sca_dump_rings()
530 	for (cnt = 0; cnt < port->card->rx_ring_buffers; cnt++)  in sca_dump_rings()
531 		pr_cont(" %02X", readb(&(desc_address(port, cnt, 0)->stat)));  in sca_dump_rings()
536 	       sca_inl(get_dmac_tx(port) + CDAL, card),  in sca_dump_rings()
537 	       sca_inl(get_dmac_tx(port) + EDAL, card),  in sca_dump_rings()
538 	       sca_in(DSR_TX(port->chan), card), port->txin, port->txlast,  in sca_dump_rings()
539 	       sca_in(DSR_TX(port->chan), card) & DSR_DE ? "" : "in");  in sca_dump_rings()
541 	for (cnt = 0; cnt < port->card->tx_ring_buffers; cnt++)  in sca_dump_rings()
542 		pr_cont(" %02X", readb(&(desc_address(port, cnt, 1)->stat)));  in sca_dump_rings()
547 	       sca_in(get_msci(port) + MD0, card),  in sca_dump_rings()
548 	       sca_in(get_msci(port) + MD1, card),  in sca_dump_rings()
549 	       sca_in(get_msci(port) + MD2, card),  in sca_dump_rings()
550 	       sca_in(get_msci(port) + ST0, card),  in sca_dump_rings()
551 	       sca_in(get_msci(port) + ST1, card),  in sca_dump_rings()
552 	       sca_in(get_msci(port) + ST2, card),  in sca_dump_rings()
553 	       sca_in(get_msci(port) + ST3, card),  in sca_dump_rings()
554 	       sca_in(get_msci(port) + ST4, card),  in sca_dump_rings()
555 	       sca_in(get_msci(port) + FST, card),  in sca_dump_rings()
556 	       sca_in(get_msci(port) + CST0, card),  in sca_dump_rings()
557 	       sca_in(get_msci(port) + CST1, card));  in sca_dump_rings()
566 	port_t *port = dev_to_port(dev);  in sca_xmit()  local
567 	card_t *card = port->card;  in sca_xmit()
571 	spin_lock_irq(&port->lock);  in sca_xmit()
573 	desc = desc_address(port, port->txin + 1, 1);  in sca_xmit()
581 	desc = desc_address(port, port->txin, 1);  in sca_xmit()
582 	buff = buffer_offset(port, port->txin, 1);  in sca_xmit()
589 	port->txin = (port->txin + 1) % card->tx_ring_buffers;  in sca_xmit()
590 	sca_outl(desc_offset(port, port->txin, 1),  in sca_xmit()
591 		 get_dmac_tx(port) + EDAL, card);  in sca_xmit()
593 	sca_out(DSR_DE, DSR_TX(port->chan), card); /* Enable TX DMA */  in sca_xmit()
595 	desc = desc_address(port, port->txin + 1, 1);  in sca_xmit()
599 	spin_unlock_irq(&port->lock);  in sca_xmit()