예제 #1
0
파일: hd6457x.c 프로젝트: E-LLP/n900
/* Transmit DMA interrupt service */
static inline void sca_tx_intr(port_t *port)
{
	struct net_device *dev = port_to_dev(port);
	u16 dmac = get_dmac_tx(port);
	card_t* card = port_to_card(port);
	u8 stat;

	spin_lock(&port->lock);

	stat = sca_in(DSR_TX(phy_node(port)), card); /* read DMA Status */

	/* Reset DSR status bits */
	sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
		DSR_TX(phy_node(port)), card);

	while (1) {
		pkt_desc __iomem *desc;

		u32 desc_off = desc_offset(port, port->txlast, 1);
		u32 cda = sca_ina(dmac + CDAL, card);
		if ((cda >= desc_off) && (cda < desc_off + sizeof(pkt_desc)))
			break;	/* Transmitter is/will_be sending this frame */

		desc = desc_address(port, port->txlast, 1);
		dev->stats.tx_packets++;
		dev->stats.tx_bytes += readw(&desc->len);
		writeb(0, &desc->stat);	/* Free descriptor */
		port->txlast = next_desc(port, port->txlast, 1);
	}

	netif_wake_queue(dev);
	spin_unlock(&port->lock);
}
예제 #2
0
static void sca_init_port(port_t *port)
{
	card_t *card = port->card;
	u16 dmac_rx = get_dmac_rx(port), dmac_tx = get_dmac_tx(port);
	int transmit, i;

	port->rxin = 0;
	port->txin = 0;
	port->txlast = 0;

	for (transmit = 0; transmit < 2; transmit++) {
		u16 buffs = transmit ? card->tx_ring_buffers
			: card->rx_ring_buffers;

		for (i = 0; i < buffs; i++) {
			pkt_desc __iomem *desc = desc_address(port, i, transmit);
			u16 chain_off = hd_desc_offset(port, i + 1, transmit);
			u32 buff_off = buffer_offset(port, i, transmit);

			writel(chain_off, &desc->cp);
			writel(buff_off, &desc->bp);
			writew(0, &desc->len);
			writeb(0, &desc->stat);
		}
	}

	/* DMA disable - to halt state */
	sca_out(0, DSR_RX(port->chan), card);
	sca_out(0, DSR_TX(port->chan), card);

	/* software ABORT - to initial state */
	sca_out(DCR_ABORT, DCR_RX(port->chan), card);
	sca_out(DCR_ABORT, DCR_TX(port->chan), card);

	/* current desc addr */
	sca_outl(hd_desc_offset(port, 0, 0), dmac_rx + CDAL, card);
	sca_outl(hd_desc_offset(port, card->tx_ring_buffers - 1, 0),
		 dmac_rx + EDAL, card);
	sca_outl(hd_desc_offset(port, 0, 1), dmac_tx + CDAL, card);
	sca_outl(hd_desc_offset(port, 0, 1), dmac_tx + EDAL, card);

	/* clear frame end interrupt counter */
	sca_out(DCR_CLEAR_EOF, DCR_RX(port->chan), card);
	sca_out(DCR_CLEAR_EOF, DCR_TX(port->chan), card);

	/* Receive */
	sca_outw(HDLC_MAX_MRU, dmac_rx + BFLL, card); /* set buffer length */
	sca_out(0x14, DMR_RX(port->chan), card); /* Chain mode, Multi-frame */
	sca_out(DIR_EOME, DIR_RX(port->chan), card); /* enable interrupts */
	sca_out(DSR_DE, DSR_RX(port->chan), card); /* DMA enable */

	/* Transmit */
	sca_out(0x14, DMR_TX(port->chan), card); /* Chain mode, Multi-frame */
	sca_out(DIR_EOME, DIR_TX(port->chan), card); /* enable interrupts */

	sca_set_carrier(port);
	netif_napi_add(port->netdev, &port->napi, sca_poll, NAPI_WEIGHT);
}
예제 #3
0
파일: hd64570.c 프로젝트: 020gzh/linux
static inline int sca_intr_status(card_t *card)
{
	u8 result = 0;
	u8 isr0 = sca_in(ISR0, card);
	u8 isr1 = sca_in(ISR1, card);

	if (isr1 & 0x03) result |= SCA_INTR_DMAC_RX(0);
	if (isr1 & 0x0C) result |= SCA_INTR_DMAC_TX(0);
	if (isr1 & 0x30) result |= SCA_INTR_DMAC_RX(1);
	if (isr1 & 0xC0) result |= SCA_INTR_DMAC_TX(1);
	if (isr0 & 0x0F) result |= SCA_INTR_MSCI(0);
	if (isr0 & 0xF0) result |= SCA_INTR_MSCI(1);

	if (!(result & SCA_INTR_DMAC_TX(0)))
		if (sca_in(DSR_TX(0), card) & DSR_EOM)
			result |= SCA_INTR_DMAC_TX(0);
	if (!(result & SCA_INTR_DMAC_TX(1)))
		if (sca_in(DSR_TX(1), card) & DSR_EOM)
			result |= SCA_INTR_DMAC_TX(1);

	return result;
}
예제 #4
0
/* Transmit DMA service */
static inline void sca_tx_done(port_t *port)
{
	struct net_device *dev = port->netdev;
	card_t* card = port->card;
	u8 stat;
	unsigned count = 0;

	spin_lock(&port->lock);

	stat = sca_in(DSR_TX(port->chan), card); /* read DMA Status */

	/* Reset DSR status bits */
	sca_out((stat & (DSR_EOT | DSR_EOM | DSR_BOF | DSR_COF)) | DSR_DWE,
		DSR_TX(port->chan), card);

	while (1) {
		pkt_desc __iomem *desc = desc_address(port, port->txlast, 1);
		u8 stat = readb(&desc->stat);

		if (!(stat & ST_TX_OWNRSHP))
			break; /* not yet transmitted */
		if (stat & ST_TX_UNDRRUN) {
			dev->stats.tx_errors++;
			dev->stats.tx_fifo_errors++;
		} else {
			dev->stats.tx_packets++;
			dev->stats.tx_bytes += readw(&desc->len);
		}
		writeb(0, &desc->stat);	/* Free descriptor */
		count++;
		port->txlast = (port->txlast + 1) % card->tx_ring_buffers;
	}

	if (count)
		netif_wake_queue(dev);
	spin_unlock(&port->lock);
}
예제 #5
0
static inline int sca_intr_status(card_t *card)
{
	u8 result = 0;

#ifdef __HD64570_H /* HD64570 */
	u8 isr0 = sca_in(ISR0, card);
	u8 isr1 = sca_in(ISR1, card);

	if (isr1 & 0x03) result |= SCA_INTR_DMAC_RX(0);
	if (isr1 & 0x0C) result |= SCA_INTR_DMAC_TX(0);
	if (isr1 & 0x30) result |= SCA_INTR_DMAC_RX(1);
	if (isr1 & 0xC0) result |= SCA_INTR_DMAC_TX(1);
	if (isr0 & 0x0F) result |= SCA_INTR_MSCI(0);
	if (isr0 & 0xF0) result |= SCA_INTR_MSCI(1);

#else /* HD64572 */
	u32 isr0 = sca_inl(ISR0, card);

	if (isr0 & 0x0000000F) result |= SCA_INTR_DMAC_RX(0);
	if (isr0 & 0x000000F0) result |= SCA_INTR_DMAC_TX(0);
	if (isr0 & 0x00000F00) result |= SCA_INTR_DMAC_RX(1);
	if (isr0 & 0x0000F000) result |= SCA_INTR_DMAC_TX(1);
	if (isr0 & 0x003E0000) result |= SCA_INTR_MSCI(0);
	if (isr0 & 0x3E000000) result |= SCA_INTR_MSCI(1);

#endif /* HD64570 vs HD64572 */

	if (!(result & SCA_INTR_DMAC_TX(0)))
		if (sca_in(DSR_TX(0), card) & DSR_EOM)
			result |= SCA_INTR_DMAC_TX(0);
	if (!(result & SCA_INTR_DMAC_TX(1)))
		if (sca_in(DSR_TX(1), card) & DSR_EOM)
			result |= SCA_INTR_DMAC_TX(1);

	return result;
}
예제 #6
0
파일: hd64570.c 프로젝트: 020gzh/linux
static void sca_init_port(port_t *port)
{
	card_t *card = port_to_card(port);
	int transmit, i;

	port->rxin = 0;
	port->txin = 0;
	port->txlast = 0;

#ifndef PAGE0_ALWAYS_MAPPED
	openwin(card, 0);
#endif

	for (transmit = 0; transmit < 2; transmit++) {
		u16 dmac = transmit ? get_dmac_tx(port) : get_dmac_rx(port);
		u16 buffs = transmit ? card->tx_ring_buffers
			: card->rx_ring_buffers;

		for (i = 0; i < buffs; i++) {
			pkt_desc __iomem *desc = desc_address(port, i, transmit);
			u16 chain_off = desc_offset(port, i + 1, transmit);
			u32 buff_off = buffer_offset(port, i, transmit);

			writew(chain_off, &desc->cp);
			writel(buff_off, &desc->bp);
			writew(0, &desc->len);
			writeb(0, &desc->stat);
		}

		/* DMA disable - to halt state */
		sca_out(0, transmit ? DSR_TX(phy_node(port)) :
			DSR_RX(phy_node(port)), card);
		/* software ABORT - to initial state */
		sca_out(DCR_ABORT, transmit ? DCR_TX(phy_node(port)) :
			DCR_RX(phy_node(port)), card);

		/* current desc addr */
		sca_out(0, dmac + CPB, card); /* pointer base */
		sca_outw(desc_offset(port, 0, transmit), dmac + CDAL, card);
		if (!transmit)
			sca_outw(desc_offset(port, buffs - 1, transmit),
				 dmac + EDAL, card);
		else
			sca_outw(desc_offset(port, 0, transmit), dmac + EDAL,
				 card);

		/* clear frame end interrupt counter */
		sca_out(DCR_CLEAR_EOF, transmit ? DCR_TX(phy_node(port)) :
			DCR_RX(phy_node(port)), card);

		if (!transmit) { /* Receive */
			/* set buffer length */
			sca_outw(HDLC_MAX_MRU, dmac + BFLL, card);
			/* Chain mode, Multi-frame */
			sca_out(0x14, DMR_RX(phy_node(port)), card);
			sca_out(DIR_EOME | DIR_BOFE, DIR_RX(phy_node(port)),
				card);
			/* DMA enable */
			sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
		} else {	/* Transmit */
			/* Chain mode, Multi-frame */
			sca_out(0x14, DMR_TX(phy_node(port)), card);
			/* enable underflow interrupts */
			sca_out(DIR_BOFE, DIR_TX(phy_node(port)), card);
		}
	}
	sca_set_carrier(port);
}
예제 #7
0
static void sca_init_port(port_t *port)
{
    card_t *card = port_to_card(port);
    int transmit, i;

    port->rxin = 0;
    port->txin = 0;
    port->txlast = 0;

#ifndef PAGE0_ALWAYS_MAPPED
    openwin(card, 0);
#endif

    for (transmit = 0; transmit < 2; transmit++) {
        u16 dmac = transmit ? get_dmac_tx(port) : get_dmac_rx(port);
        u16 buffs = transmit ? card->tx_ring_buffers
                    : card->rx_ring_buffers;

        for (i = 0; i < buffs; i++) {
            pkt_desc __iomem *desc = desc_address(port, i, transmit);
            u16 chain_off = desc_offset(port, i + 1, transmit);
            u32 buff_off = buffer_offset(port, i, transmit);

            writew(chain_off, &desc->cp);
            writel(buff_off, &desc->bp);
            writew(0, &desc->len);
            writeb(0, &desc->stat);
        }


        sca_out(0, transmit ? DSR_TX(phy_node(port)) :
                DSR_RX(phy_node(port)), card);

        sca_out(DCR_ABORT, transmit ? DCR_TX(phy_node(port)) :
                DCR_RX(phy_node(port)), card);


        sca_out(0, dmac + CPB, card);
        sca_outw(desc_offset(port, 0, transmit), dmac + CDAL, card);
        if (!transmit)
            sca_outw(desc_offset(port, buffs - 1, transmit),
                     dmac + EDAL, card);
        else
            sca_outw(desc_offset(port, 0, transmit), dmac + EDAL,
                     card);


        sca_out(DCR_CLEAR_EOF, transmit ? DCR_TX(phy_node(port)) :
                DCR_RX(phy_node(port)), card);

        if (!transmit) {

            sca_outw(HDLC_MAX_MRU, dmac + BFLL, card);

            sca_out(0x14, DMR_RX(phy_node(port)), card);
            sca_out(DIR_EOME | DIR_BOFE, DIR_RX(phy_node(port)),
                    card);

            sca_out(DSR_DE, DSR_RX(phy_node(port)), card);
        } else {

            sca_out(0x14, DMR_TX(phy_node(port)), card);

            sca_out(DIR_BOFE, DIR_TX(phy_node(port)), card);
        }
    }
    sca_set_carrier(port);
}