From e1f024eb5d88e5b4f8e58e99c95082c342f70a1a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Krzysztof=20Ha=C5=82asa?= Date: Fri, 11 Jul 2008 00:13:09 +0200 Subject: WAN: Simplify sca_init_port() in HD64572 driver. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Krzysztof Hałasa --- drivers/net/wan/hd64572.c | 67 ++++++++++++++++++++++------------------------- 1 file changed, 31 insertions(+), 36 deletions(-) (limited to 'drivers/net/wan') diff --git a/drivers/net/wan/hd64572.c b/drivers/net/wan/hd64572.c index 1de3cb7..0bcc0b5 100644 --- a/drivers/net/wan/hd64572.c +++ b/drivers/net/wan/hd64572.c @@ -131,6 +131,7 @@ static inline void sca_set_carrier(port_t *port) 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; @@ -138,7 +139,6 @@ static void sca_init_port(port_t *port) port->txlast = 0; 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; @@ -152,42 +152,37 @@ static void sca_init_port(port_t *port) writew(0, &desc->len); writeb(0, &desc->stat); } - - /* DMA disable - to halt state */ - sca_out(0, transmit ? DSR_TX(port->chan) : - DSR_RX(port->chan), card); - /* software ABORT - to initial state */ - sca_out(DCR_ABORT, transmit ? DCR_TX(port->chan) : - DCR_RX(port->chan), card); - - /* current desc addr */ - sca_outl(desc_offset(port, 0, transmit), dmac + CDAL, card); - if (!transmit) - sca_outl(desc_offset(port, buffs - 1, transmit), - dmac + EDAL, card); - else - sca_outl(desc_offset(port, 0, transmit), dmac + EDAL, - card); - - /* clear frame end interrupt counter */ - sca_out(DCR_CLEAR_EOF, transmit ? DCR_TX(port->chan) : - DCR_RX(port->chan), card); - - if (!transmit) { /* Receive */ - /* set buffer length */ - sca_outw(HDLC_MAX_MRU, dmac + BFLL, card); - /* Chain mode, Multi-frame */ - sca_out(0x14, DMR_RX(port->chan), card); - sca_out(DIR_EOME, DIR_RX(port->chan), card); - /* DMA enable */ - sca_out(DSR_DE, DSR_RX(port->chan), card); - } else { /* Transmit */ - /* Chain mode, Multi-frame */ - sca_out(0x14, DMR_TX(port->chan), card); - /* enable underflow interrupts */ - sca_out(DIR_EOME, DIR_TX(port->chan), card); - } } + + /* 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(desc_offset(port, 0, 0), dmac_rx + CDAL, card); + sca_outl(desc_offset(port, card->tx_ring_buffers - 1, 0), + dmac_rx + EDAL, card); + sca_outl(desc_offset(port, 0, 1), dmac_tx + CDAL, card); + sca_outl(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); } -- cgit v1.1