diff options
Diffstat (limited to 'drivers/staging/sbe-2t3e3/main.c')
| -rw-r--r-- | drivers/staging/sbe-2t3e3/main.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/drivers/staging/sbe-2t3e3/main.c b/drivers/staging/sbe-2t3e3/main.c deleted file mode 100644 index c8e039860dc4..000000000000 --- a/drivers/staging/sbe-2t3e3/main.c +++ /dev/null @@ -1,172 +0,0 @@ -/* - * SBE 2T3E3 synchronous serial card driver for Linux - * - * Copyright (C) 2009-2010 Krzysztof Halasa <khc@pm.waw.pl> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License - * as published by the Free Software Foundation. - * - * This code is based on a driver written by SBE Inc. - */ - -#include <linux/interrupt.h> -#include <linux/netdevice.h> -#include "2t3e3.h" - -void t3e3_init(struct channel *sc) -{ - cpld_init(sc); - dc_reset(sc); - dc_init(sc); - exar7250_init(sc); - exar7300_init(sc); -} - -int t3e3_if_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - struct channel *sc = dev_to_priv(dev); - u32 current_write, last_write; - unsigned long flags; - struct sk_buff *skb2; - - if (skb == NULL) { - sc->s.out_errors++; - return 0; - } - - if (sc->p.transmitter_on != SBE_2T3E3_ON) { - sc->s.out_errors++; - sc->s.out_dropped++; - dev_kfree_skb_any(skb); - return 0; - } - - if (sc->s.OOF && sc->p.loopback == SBE_2T3E3_LOOPBACK_NONE) { - sc->s.out_dropped++; - dev_kfree_skb_any(skb); - return 0; - } - - spin_lock_irqsave(&sc->ether.tx_lock, flags); - - current_write = sc->ether.tx_ring_current_write; - for (skb2 = skb; skb2 != NULL; skb2 = NULL) { - if (skb2->len) { - if ((sc->ether.tx_ring[current_write].tdes1 & - SBE_2T3E3_TX_DESC_BUFFER_1_SIZE) > 0) - break; - current_write = (current_write + 1) % SBE_2T3E3_TX_DESC_RING_SIZE; - /* - * Leave at least 1 tx desc free so that dc_intr_tx() can - * identify empty list - */ - if (current_write == sc->ether.tx_ring_current_read) - break; - } - } - if (skb2 != NULL) { - netif_stop_queue(sc->dev); - sc->ether.tx_full = 1; - dev_dbg(&sc->pdev->dev, "SBE 2T3E3: out of descriptors\n"); - spin_unlock_irqrestore(&sc->ether.tx_lock, flags); - return NETDEV_TX_BUSY; - } - - current_write = last_write = sc->ether.tx_ring_current_write; - dev_dbg(&sc->pdev->dev, "sending mbuf (current_write = %d)\n", - current_write); - - for (skb2 = skb; skb2 != NULL; skb2 = NULL) { - if (skb2->len) { - dev_dbg(&sc->pdev->dev, - "sending mbuf (len = %d, next = %p)\n", - skb2->len, NULL); - - sc->ether.tx_free_cnt--; - sc->ether.tx_ring[current_write].tdes0 = 0; - sc->ether.tx_ring[current_write].tdes1 &= - SBE_2T3E3_TX_DESC_END_OF_RING | - SBE_2T3E3_TX_DESC_SECOND_ADDRESS_CHAINED; -/* DISABLE_PADDING sometimes gets lost somehow, hands off... */ - sc->ether.tx_ring[current_write].tdes1 |= - SBE_2T3E3_TX_DESC_DISABLE_PADDING | skb2->len; - - if (current_write == sc->ether.tx_ring_current_write) { - sc->ether.tx_ring[current_write].tdes1 |= - SBE_2T3E3_TX_DESC_FIRST_SEGMENT; - } else { - sc->ether.tx_ring[current_write].tdes0 = - SBE_2T3E3_TX_DESC_21143_OWN; - } - - sc->ether.tx_ring[current_write].tdes2 = virt_to_phys(skb2->data); - sc->ether.tx_data[current_write] = NULL; - - last_write = current_write; - current_write = (current_write + 1) % SBE_2T3E3_TX_DESC_RING_SIZE; - } - } - - sc->ether.tx_data[last_write] = skb; - sc->ether.tx_ring[last_write].tdes1 |= - SBE_2T3E3_TX_DESC_LAST_SEGMENT | - SBE_2T3E3_TX_DESC_INTERRUPT_ON_COMPLETION; - sc->ether.tx_ring[sc->ether.tx_ring_current_write].tdes0 |= - SBE_2T3E3_TX_DESC_21143_OWN; - sc->ether.tx_ring_current_write = current_write; - - dev_dbg(&sc->pdev->dev, "txput: tdes0 = %08X tdes1 = %08X\n", - sc->ether.tx_ring[last_write].tdes0, - sc->ether.tx_ring[last_write].tdes1); - - dc_write(sc->addr, SBE_2T3E3_21143_REG_TRANSMIT_POLL_DEMAND, - 0xffffffff); - - spin_unlock_irqrestore(&sc->ether.tx_lock, flags); - return 0; -} - - -void t3e3_read_card_serial_number(struct channel *sc) -{ - u32 i; - - for (i = 0; i < 3; i++) - sc->ether.card_serial_number[i] = t3e3_eeprom_read_word(sc, 10 + i); - - netdev_info(sc->dev, "SBE wanPMC-2T3E3 serial number: %04X%04X%04X\n", - sc->ether.card_serial_number[0], - sc->ether.card_serial_number[1], - sc->ether.card_serial_number[2]); -} - -/* - bit 0 led1 (green) - bit 1 led1 (yellow) - - bit 2 led2 (green) - bit 3 led2 (yellow) - - bit 4 led3 (green) - bit 5 led3 (yellow) - - bit 6 led4 (green) - bit 7 led4 (yellow) -*/ - -void update_led(struct channel *sc, int blinker) -{ - int leds; - if (sc->s.LOS) - leds = 0; /* led1 = off */ - else if (sc->s.OOF) - leds = 2; /* led1 = yellow */ - else if ((blinker & 1) && sc->rcv_count) { - leds = 0; /* led1 = off */ - sc->rcv_count = 0; - } else - leds = 1; /* led1 = green */ - cpld_write(sc, SBE_2T3E3_CPLD_REG_LEDR, leds); - sc->leds = leds; -} |