Lines Matching +full:port +full:- +full:1
1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 1998-2003 Krzysztof Halasa <khc@pm.waw.pl>
11 * Packet buffer descriptor rings - starting from winbase or win0base:
14 * rx_ring_buffers * sizeof(pkt_desc) = logical channel #1 RX ring (if used)
15 * tx_ring_buffers * sizeof(pkt_desc) = logical channel #1 TX ring (if used)
17 * Packet data buffers - starting from winbase + buff_offset:
42 #define get_msci(port) (phy_node(port) ? MSCI1_OFFSET : MSCI0_OFFSET) argument
43 #define get_dmac_rx(port) (phy_node(port) ? DMAC1RX_OFFSET : DMAC0RX_OFFSET) argument
44 #define get_dmac_tx(port) (phy_node(port) ? DMAC1TX_OFFSET : DMAC0TX_OFFSET) argument
51 static inline struct net_device *port_to_dev(port_t *port) in port_to_dev() argument
53 return port->dev; in port_to_dev()
64 if (isr1 & 0x30) result |= SCA_INTR_DMAC_RX(1); in sca_intr_status()
65 if (isr1 & 0xC0) result |= SCA_INTR_DMAC_TX(1); in sca_intr_status()
67 if (isr0 & 0xF0) result |= SCA_INTR_MSCI(1); in sca_intr_status()
72 if (!(result & SCA_INTR_DMAC_TX(1))) in sca_intr_status()
73 if (sca_in(DSR_TX(1), card) & DSR_EOM) in sca_intr_status()
74 result |= SCA_INTR_DMAC_TX(1); in sca_intr_status()
81 return dev_to_hdlc(dev)->priv; in dev_to_port()
84 static inline u16 next_desc(port_t *port, u16 desc, int transmit) in next_desc() argument
86 return (desc + 1) % (transmit ? port_to_card(port)->tx_ring_buffers in next_desc()
87 : port_to_card(port)->rx_ring_buffers); in next_desc()
91 static inline u16 desc_abs_number(port_t *port, u16 desc, int transmit) in desc_abs_number() argument
93 u16 rx_buffs = port_to_card(port)->rx_ring_buffers; in desc_abs_number()
94 u16 tx_buffs = port_to_card(port)->tx_ring_buffers; in desc_abs_number()
96 desc %= (transmit ? tx_buffs : rx_buffs); // called with "X + 1" etc. in desc_abs_number()
97 return log_node(port) * (rx_buffs + tx_buffs) + in desc_abs_number()
102 static inline u16 desc_offset(port_t *port, u16 desc, int transmit) in desc_offset() argument
105 return desc_abs_number(port, desc, transmit) * sizeof(pkt_desc); in desc_offset()
109 static inline pkt_desc __iomem *desc_address(port_t *port, u16 desc, in desc_address() argument
113 return (pkt_desc __iomem *)(win0base(port_to_card(port)) in desc_address()
114 + desc_offset(port, desc, transmit)); in desc_address()
116 return (pkt_desc __iomem *)(winbase(port_to_card(port)) in desc_address()
117 + desc_offset(port, desc, transmit)); in desc_address()
122 static inline u32 buffer_offset(port_t *port, u16 desc, int transmit) in buffer_offset() argument
124 return port_to_card(port)->buff_offset + in buffer_offset()
125 desc_abs_number(port, desc, transmit) * (u32)HDLC_MAX_MRU; in buffer_offset()
129 static inline void sca_set_carrier(port_t *port) in sca_set_carrier() argument
131 if (!(sca_in(get_msci(port) + ST3, port_to_card(port)) & ST3_DCD)) { in sca_set_carrier()
134 port_to_dev(port)->name); in sca_set_carrier()
136 netif_carrier_on(port_to_dev(port)); in sca_set_carrier()
140 port_to_dev(port)->name); in sca_set_carrier()
142 netif_carrier_off(port_to_dev(port)); in sca_set_carrier()
147 static void sca_init_port(port_t *port) in sca_init_port() argument
149 card_t *card = port_to_card(port); in sca_init_port()
152 port->rxin = 0; in sca_init_port()
153 port->txin = 0; in sca_init_port()
154 port->txlast = 0; in sca_init_port()
161 u16 dmac = transmit ? get_dmac_tx(port) : get_dmac_rx(port); in sca_init_port()
162 u16 buffs = transmit ? card->tx_ring_buffers in sca_init_port()
163 : card->rx_ring_buffers; in sca_init_port()
166 pkt_desc __iomem *desc = desc_address(port, i, transmit); in sca_init_port()
167 u16 chain_off = desc_offset(port, i + 1, transmit); in sca_init_port()
168 u32 buff_off = buffer_offset(port, i, transmit); in sca_init_port()
170 writew(chain_off, &desc->cp); in sca_init_port()
171 writel(buff_off, &desc->bp); in sca_init_port()
172 writew(0, &desc->len); in sca_init_port()
173 writeb(0, &desc->stat); in sca_init_port()
176 /* DMA disable - to halt state */ in sca_init_port()
177 sca_out(0, transmit ? DSR_TX(phy_node(port)) : in sca_init_port()
178 DSR_RX(phy_node(port)), card); in sca_init_port()
179 /* software ABORT - to initial state */ in sca_init_port()
180 sca_out(DCR_ABORT, transmit ? DCR_TX(phy_node(port)) : in sca_init_port()
181 DCR_RX(phy_node(port)), card); in sca_init_port()
185 sca_outw(desc_offset(port, 0, transmit), dmac + CDAL, card); in sca_init_port()
187 sca_outw(desc_offset(port, buffs - 1, transmit), in sca_init_port()
190 sca_outw(desc_offset(port, 0, transmit), dmac + EDAL, in sca_init_port()
194 sca_out(DCR_CLEAR_EOF, transmit ? DCR_TX(phy_node(port)) : in sca_init_port()
195 DCR_RX(phy_node(port)), card); in sca_init_port()
200 /* Chain mode, Multi-frame */ in sca_init_port()
201 sca_out(0x14, DMR_RX(phy_node(port)), card); in sca_init_port()
202 sca_out(DIR_EOME | DIR_BOFE, DIR_RX(phy_node(port)), in sca_init_port()
205 sca_out(DSR_DE, DSR_RX(phy_node(port)), card); in sca_init_port()
207 /* Chain mode, Multi-frame */ in sca_init_port()
208 sca_out(0x14, DMR_TX(phy_node(port)), card); in sca_init_port()
210 sca_out(DIR_BOFE, DIR_TX(phy_node(port)), card); in sca_init_port()
213 sca_set_carrier(port); in sca_init_port()
219 static inline void sca_msci_intr(port_t *port) in sca_msci_intr() argument
221 u16 msci = get_msci(port); in sca_msci_intr()
222 card_t* card = port_to_card(port); in sca_msci_intr()
230 port_to_dev(port)->stats.tx_errors++; in sca_msci_intr()
231 port_to_dev(port)->stats.tx_fifo_errors++; in sca_msci_intr()
235 sca_set_carrier(port); in sca_msci_intr()
240 static inline void sca_rx(card_t *card, port_t *port, pkt_desc __iomem *desc, in sca_rx() argument
243 struct net_device *dev = port_to_dev(port); in sca_rx()
250 len = readw(&desc->len); in sca_rx()
253 dev->stats.rx_dropped++; in sca_rx()
257 buff = buffer_offset(port, rxin, 0); in sca_rx()
260 maxlen = winsize(card) - buff; in sca_rx()
265 memcpy_fromio(skb->data, winbase(card) + buff, maxlen); in sca_rx()
266 openwin(card, page + 1); in sca_rx()
267 memcpy_fromio(skb->data + maxlen, winbase(card), len - maxlen); in sca_rx()
269 memcpy_fromio(skb->data, winbase(card) + buff, len); in sca_rx()
276 printk(KERN_DEBUG "%s RX(%i):", dev->name, skb->len); in sca_rx()
279 dev->stats.rx_packets++; in sca_rx()
280 dev->stats.rx_bytes += skb->len; in sca_rx()
281 skb->protocol = hdlc_type_trans(skb, dev); in sca_rx()
287 static inline void sca_rx_intr(port_t *port) in sca_rx_intr() argument
289 struct net_device *dev = port_to_dev(port); in sca_rx_intr()
290 u16 dmac = get_dmac_rx(port); in sca_rx_intr()
291 card_t *card = port_to_card(port); in sca_rx_intr()
292 u8 stat = sca_in(DSR_RX(phy_node(port)), card); /* read DMA Status */ in sca_rx_intr()
296 DSR_RX(phy_node(port)), card); in sca_rx_intr()
300 dev->stats.rx_over_errors++; in sca_rx_intr()
302 while (1) { in sca_rx_intr()
303 u32 desc_off = desc_offset(port, port->rxin, 0); in sca_rx_intr()
310 desc = desc_address(port, port->rxin, 0); in sca_rx_intr()
311 stat = readb(&desc->stat); in sca_rx_intr()
313 port->rxpart = 1; /* partial frame received */ in sca_rx_intr()
314 else if ((stat & ST_ERROR_MASK) || port->rxpart) { in sca_rx_intr()
315 dev->stats.rx_errors++; in sca_rx_intr()
317 dev->stats.rx_fifo_errors++; in sca_rx_intr()
319 ST_RX_RESBIT)) || port->rxpart) in sca_rx_intr()
320 dev->stats.rx_frame_errors++; in sca_rx_intr()
322 dev->stats.rx_crc_errors++; in sca_rx_intr()
324 port->rxpart = 0; /* received last fragment */ in sca_rx_intr()
326 sca_rx(card, port, desc, port->rxin); in sca_rx_intr()
330 port->rxin = next_desc(port, port->rxin, 0); in sca_rx_intr()
334 sca_out(DSR_DE, DSR_RX(phy_node(port)), card); in sca_rx_intr()
339 static inline void sca_tx_intr(port_t *port) in sca_tx_intr() argument
341 struct net_device *dev = port_to_dev(port); in sca_tx_intr()
342 u16 dmac = get_dmac_tx(port); in sca_tx_intr()
343 card_t* card = port_to_card(port); in sca_tx_intr()
346 spin_lock(&port->lock); in sca_tx_intr()
348 stat = sca_in(DSR_TX(phy_node(port)), card); /* read DMA Status */ in sca_tx_intr()
352 DSR_TX(phy_node(port)), card); in sca_tx_intr()
354 while (1) { in sca_tx_intr()
357 u32 desc_off = desc_offset(port, port->txlast, 1); in sca_tx_intr()
362 desc = desc_address(port, port->txlast, 1); in sca_tx_intr()
363 dev->stats.tx_packets++; in sca_tx_intr()
364 dev->stats.tx_bytes += readw(&desc->len); in sca_tx_intr()
365 writeb(0, &desc->stat); /* Free descriptor */ in sca_tx_intr()
366 port->txlast = next_desc(port, port->txlast, 1); in sca_tx_intr()
370 spin_unlock(&port->lock); in sca_tx_intr()
383 handled = 1; in sca_intr()
385 port_t *port = get_port(card, i); in sca_intr() local
386 if (port) { in sca_intr()
388 sca_msci_intr(port); in sca_intr()
391 sca_rx_intr(port); in sca_intr()
394 sca_tx_intr(port); in sca_intr()
404 static void sca_set_port(port_t *port) in sca_set_port() argument
406 card_t* card = port_to_card(port); in sca_set_port()
407 u16 msci = get_msci(port); in sca_set_port()
412 if (port->settings.clock_rate > 0) { in sca_set_port()
415 br--; in sca_set_port()
416 brv >>= 1; /* brv = 2^9 = 512 max in specs */ in sca_set_port()
419 tmc = CLOCK_BASE / brv / port->settings.clock_rate; in sca_set_port()
420 }while (br > 1 && tmc <= 128); in sca_set_port()
422 if (tmc < 1) { in sca_set_port()
423 tmc = 1; in sca_set_port()
424 br = 0; /* For baud=CLOCK_BASE we use tmc=1 br=0 */ in sca_set_port()
425 brv = 1; in sca_set_port()
427 tmc = 256; /* tmc=0 means 256 - low baud rates */ in sca_set_port()
429 port->settings.clock_rate = CLOCK_BASE / brv / tmc; in sca_set_port()
433 port->settings.clock_rate = CLOCK_BASE / (256 * 512); in sca_set_port()
436 port->rxs = (port->rxs & ~CLK_BRG_MASK) | br; in sca_set_port()
437 port->txs = (port->txs & ~CLK_BRG_MASK) | br; in sca_set_port()
438 port->tmc = tmc; in sca_set_port()
440 /* baud divisor - time constant*/ in sca_set_port()
441 sca_out(port->tmc, msci + TMC, card); in sca_set_port()
444 sca_out(port->rxs, msci + RXS, card); in sca_set_port()
445 sca_out(port->txs, msci + TXS, card); in sca_set_port()
447 if (port->settings.loopback) in sca_set_port()
459 port_t *port = dev_to_port(dev); in sca_open() local
460 card_t* card = port_to_card(port); in sca_open()
461 u16 msci = get_msci(port); in sca_open()
464 switch(port->encoding) { in sca_open()
472 if (port->settings.loopback) in sca_open()
475 switch(port->parity) { in sca_open()
492 sca_out(0x07, msci + RRC, card); /* +1=RXRDY/DMA activation condition*/ in sca_open()
494 sca_out(0x14, msci + TRC1, card); /* +1=TXRDY/DMA deactiv condition */ in sca_open()
497 - TXINT (DMAC completed all transmisions, underrun or DCD change) in sca_open()
498 - all DMA interrupts in sca_open()
500 sca_set_carrier(port); in sca_open()
505 sca_out(sca_in(IER0, card) | (phy_node(port) ? 0xC0 : 0x0C), in sca_open()
508 sca_out(sca_in(IER1, card) | (phy_node(port) ? 0xF0 : 0x0F), in sca_open()
511 sca_out(port->tmc, msci + TMC, card); /* Restore registers */ in sca_open()
512 sca_out(port->rxs, msci + RXS, card); in sca_open()
513 sca_out(port->txs, msci + TXS, card); in sca_open()
523 port_t *port = dev_to_port(dev); in sca_close() local
524 card_t* card = port_to_card(port); in sca_close()
527 sca_out(CMD_RESET, get_msci(port) + CMD, port_to_card(port)); in sca_close()
529 sca_out(sca_in(IER0, card) & (phy_node(port) ? 0x0F : 0xF0), in sca_close()
532 sca_out(sca_in(IER1, card) & (phy_node(port) ? 0x0F : 0xF0), in sca_close()
547 return -EINVAL; in sca_attach()
554 return -EINVAL; in sca_attach()
556 dev_to_port(dev)->encoding = encoding; in sca_attach()
557 dev_to_port(dev)->parity = parity; in sca_attach()
565 port_t *port = dev_to_port(dev); in sca_dump_rings() local
566 card_t *card = port_to_card(port); in sca_dump_rings()
575 sca_inw(get_dmac_rx(port) + CDAL, card), in sca_dump_rings()
576 sca_inw(get_dmac_rx(port) + EDAL, card), in sca_dump_rings()
577 sca_in(DSR_RX(phy_node(port)), card), port->rxin, in sca_dump_rings()
578 sca_in(DSR_RX(phy_node(port)), card) & DSR_DE ? "" : "in"); in sca_dump_rings()
579 for (cnt = 0; cnt < port_to_card(port)->rx_ring_buffers; cnt++) in sca_dump_rings()
580 pr_cont(" %02X", readb(&(desc_address(port, cnt, 0)->stat))); in sca_dump_rings()
585 sca_inw(get_dmac_tx(port) + CDAL, card), in sca_dump_rings()
586 sca_inw(get_dmac_tx(port) + EDAL, card), in sca_dump_rings()
587 sca_in(DSR_TX(phy_node(port)), card), port->txin, port->txlast, in sca_dump_rings()
588 sca_in(DSR_TX(phy_node(port)), card) & DSR_DE ? "" : "in"); in sca_dump_rings()
590 for (cnt = 0; cnt < port_to_card(port)->tx_ring_buffers; cnt++) in sca_dump_rings()
591 pr_cont(" %02X", readb(&(desc_address(port, cnt, 1)->stat))); in sca_dump_rings()
596 sca_in(get_msci(port) + MD0, card), in sca_dump_rings()
597 sca_in(get_msci(port) + MD1, card), in sca_dump_rings()
598 sca_in(get_msci(port) + MD2, card), in sca_dump_rings()
599 sca_in(get_msci(port) + ST0, card), in sca_dump_rings()
600 sca_in(get_msci(port) + ST1, card), in sca_dump_rings()
601 sca_in(get_msci(port) + ST2, card), in sca_dump_rings()
602 sca_in(get_msci(port) + ST3, card), in sca_dump_rings()
603 sca_in(get_msci(port) + FST, card), in sca_dump_rings()
604 sca_in(get_msci(port) + CST0, card), in sca_dump_rings()
605 sca_in(get_msci(port) + CST1, card)); in sca_dump_rings()
619 port_t *port = dev_to_port(dev); in sca_xmit() local
620 card_t *card = port_to_card(port); in sca_xmit()
626 spin_lock_irq(&port->lock); in sca_xmit()
628 desc = desc_address(port, port->txin + 1, 1); in sca_xmit()
629 BUG_ON(readb(&desc->stat)); /* previous xmit should stop queue */ in sca_xmit()
632 printk(KERN_DEBUG "%s TX(%i):", dev->name, skb->len); in sca_xmit()
636 desc = desc_address(port, port->txin, 1); in sca_xmit()
637 buff = buffer_offset(port, port->txin, 1); in sca_xmit()
638 len = skb->len; in sca_xmit()
641 maxlen = winsize(card) - buff; in sca_xmit()
645 memcpy_toio(winbase(card) + buff, skb->data, maxlen); in sca_xmit()
646 openwin(card, page + 1); in sca_xmit()
647 memcpy_toio(winbase(card), skb->data + maxlen, len - maxlen); in sca_xmit()
649 memcpy_toio(winbase(card) + buff, skb->data, len); in sca_xmit()
654 writew(len, &desc->len); in sca_xmit()
655 writeb(ST_TX_EOM, &desc->stat); in sca_xmit()
657 port->txin = next_desc(port, port->txin, 1); in sca_xmit()
658 sca_outw(desc_offset(port, port->txin, 1), in sca_xmit()
659 get_dmac_tx(port) + EDAL, card); in sca_xmit()
661 sca_out(DSR_DE, DSR_TX(phy_node(port)), card); /* Enable TX DMA */ in sca_xmit()
663 desc = desc_address(port, port->txin + 1, 1); in sca_xmit()
664 if (readb(&desc->stat)) /* allow 1 packet gap */ in sca_xmit()
667 spin_unlock_irq(&port->lock); in sca_xmit()
681 openwin(card, (i - 4) / size); /* select last window */ in sca_detect_ram()
684 i -= 4; in sca_detect_ram()
711 sca_out(0, DSR_RX(0), card); /* DMA disable - to halt state */ in sca_init()
713 sca_out(0, DSR_RX(1), card); in sca_init()
714 sca_out(0, DSR_TX(1), card); in sca_init()