3874 lines
91 KiB
C
3874 lines
91 KiB
C
/*******************************************************************
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* ident "$Id: idt77252.c,v 1.2 2001/11/11 08:13:54 ecd Exp $"
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*
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* $Author: ecd $
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* $Date: 2001/11/11 08:13:54 $
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*
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* Copyright (c) 2000 ATecoM GmbH
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*
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* The author may be reached at ecd@atecom.com.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*******************************************************************/
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static char const rcsid[] =
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"$Id: idt77252.c,v 1.2 2001/11/11 08:13:54 ecd Exp $";
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/poison.h>
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#include <linux/skbuff.h>
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#include <linux/kernel.h>
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#include <linux/vmalloc.h>
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#include <linux/netdevice.h>
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#include <linux/atmdev.h>
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#include <linux/atm.h>
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/bitops.h>
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#include <linux/wait.h>
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#include <linux/jiffies.h>
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#include <asm/semaphore.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include <asm/atomic.h>
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#include <asm/byteorder.h>
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#ifdef CONFIG_ATM_IDT77252_USE_SUNI
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#include "suni.h"
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#endif /* CONFIG_ATM_IDT77252_USE_SUNI */
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#include "idt77252.h"
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#include "idt77252_tables.h"
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static unsigned int vpibits = 1;
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#define CONFIG_ATM_IDT77252_SEND_IDLE 1
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/*
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* Debug HACKs.
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*/
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#define DEBUG_MODULE 1
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#undef HAVE_EEPROM /* does not work, yet. */
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#ifdef CONFIG_ATM_IDT77252_DEBUG
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static unsigned long debug = DBG_GENERAL;
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#endif
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#define SAR_RX_DELAY (SAR_CFG_RXINT_NODELAY)
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/*
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* SCQ Handling.
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*/
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static struct scq_info *alloc_scq(struct idt77252_dev *, int);
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static void free_scq(struct idt77252_dev *, struct scq_info *);
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static int queue_skb(struct idt77252_dev *, struct vc_map *,
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struct sk_buff *, int oam);
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static void drain_scq(struct idt77252_dev *, struct vc_map *);
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static unsigned long get_free_scd(struct idt77252_dev *, struct vc_map *);
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static void fill_scd(struct idt77252_dev *, struct scq_info *, int);
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/*
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* FBQ Handling.
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*/
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static int push_rx_skb(struct idt77252_dev *,
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struct sk_buff *, int queue);
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static void recycle_rx_skb(struct idt77252_dev *, struct sk_buff *);
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static void flush_rx_pool(struct idt77252_dev *, struct rx_pool *);
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static void recycle_rx_pool_skb(struct idt77252_dev *,
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struct rx_pool *);
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static void add_rx_skb(struct idt77252_dev *, int queue,
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unsigned int size, unsigned int count);
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/*
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* RSQ Handling.
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*/
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static int init_rsq(struct idt77252_dev *);
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static void deinit_rsq(struct idt77252_dev *);
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static void idt77252_rx(struct idt77252_dev *);
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/*
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* TSQ handling.
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*/
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static int init_tsq(struct idt77252_dev *);
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static void deinit_tsq(struct idt77252_dev *);
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static void idt77252_tx(struct idt77252_dev *);
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/*
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* ATM Interface.
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*/
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static void idt77252_dev_close(struct atm_dev *dev);
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static int idt77252_open(struct atm_vcc *vcc);
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static void idt77252_close(struct atm_vcc *vcc);
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static int idt77252_send(struct atm_vcc *vcc, struct sk_buff *skb);
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static int idt77252_send_oam(struct atm_vcc *vcc, void *cell,
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int flags);
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static void idt77252_phy_put(struct atm_dev *dev, unsigned char value,
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unsigned long addr);
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static unsigned char idt77252_phy_get(struct atm_dev *dev, unsigned long addr);
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static int idt77252_change_qos(struct atm_vcc *vcc, struct atm_qos *qos,
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int flags);
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static int idt77252_proc_read(struct atm_dev *dev, loff_t * pos,
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char *page);
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static void idt77252_softint(struct work_struct *work);
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static struct atmdev_ops idt77252_ops =
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{
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.dev_close = idt77252_dev_close,
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.open = idt77252_open,
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.close = idt77252_close,
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.send = idt77252_send,
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.send_oam = idt77252_send_oam,
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.phy_put = idt77252_phy_put,
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.phy_get = idt77252_phy_get,
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.change_qos = idt77252_change_qos,
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.proc_read = idt77252_proc_read,
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.owner = THIS_MODULE
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};
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static struct idt77252_dev *idt77252_chain = NULL;
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static unsigned int idt77252_sram_write_errors = 0;
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/*****************************************************************************/
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/* */
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/* I/O and Utility Bus */
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/* */
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/*****************************************************************************/
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static void
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waitfor_idle(struct idt77252_dev *card)
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{
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u32 stat;
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stat = readl(SAR_REG_STAT);
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while (stat & SAR_STAT_CMDBZ)
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stat = readl(SAR_REG_STAT);
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}
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static u32
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read_sram(struct idt77252_dev *card, unsigned long addr)
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{
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unsigned long flags;
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u32 value;
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spin_lock_irqsave(&card->cmd_lock, flags);
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writel(SAR_CMD_READ_SRAM | (addr << 2), SAR_REG_CMD);
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waitfor_idle(card);
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value = readl(SAR_REG_DR0);
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spin_unlock_irqrestore(&card->cmd_lock, flags);
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return value;
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}
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static void
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write_sram(struct idt77252_dev *card, unsigned long addr, u32 value)
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{
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unsigned long flags;
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if ((idt77252_sram_write_errors == 0) &&
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(((addr > card->tst[0] + card->tst_size - 2) &&
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(addr < card->tst[0] + card->tst_size)) ||
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((addr > card->tst[1] + card->tst_size - 2) &&
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(addr < card->tst[1] + card->tst_size)))) {
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printk("%s: ERROR: TST JMP section at %08lx written: %08x\n",
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card->name, addr, value);
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}
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spin_lock_irqsave(&card->cmd_lock, flags);
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writel(value, SAR_REG_DR0);
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writel(SAR_CMD_WRITE_SRAM | (addr << 2), SAR_REG_CMD);
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waitfor_idle(card);
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spin_unlock_irqrestore(&card->cmd_lock, flags);
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}
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static u8
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read_utility(void *dev, unsigned long ubus_addr)
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{
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struct idt77252_dev *card = dev;
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unsigned long flags;
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u8 value;
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if (!card) {
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printk("Error: No such device.\n");
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return -1;
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}
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spin_lock_irqsave(&card->cmd_lock, flags);
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writel(SAR_CMD_READ_UTILITY + ubus_addr, SAR_REG_CMD);
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waitfor_idle(card);
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value = readl(SAR_REG_DR0);
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spin_unlock_irqrestore(&card->cmd_lock, flags);
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return value;
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}
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static void
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write_utility(void *dev, unsigned long ubus_addr, u8 value)
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{
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struct idt77252_dev *card = dev;
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unsigned long flags;
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if (!card) {
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printk("Error: No such device.\n");
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return;
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}
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spin_lock_irqsave(&card->cmd_lock, flags);
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writel((u32) value, SAR_REG_DR0);
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writel(SAR_CMD_WRITE_UTILITY + ubus_addr, SAR_REG_CMD);
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waitfor_idle(card);
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spin_unlock_irqrestore(&card->cmd_lock, flags);
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}
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#ifdef HAVE_EEPROM
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static u32 rdsrtab[] =
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{
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SAR_GP_EECS | SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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SAR_GP_EEDO,
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SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */
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0,
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SAR_GP_EESCLK, /* 0 */
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SAR_GP_EEDO,
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SAR_GP_EESCLK | SAR_GP_EEDO /* 1 */
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};
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static u32 wrentab[] =
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{
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SAR_GP_EECS | SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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SAR_GP_EEDO,
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SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */
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SAR_GP_EEDO,
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SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK /* 0 */
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};
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static u32 rdtab[] =
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{
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SAR_GP_EECS | SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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SAR_GP_EEDO,
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SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */
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SAR_GP_EEDO,
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SAR_GP_EESCLK | SAR_GP_EEDO /* 1 */
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};
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static u32 wrtab[] =
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{
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SAR_GP_EECS | SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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0,
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SAR_GP_EESCLK, /* 0 */
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SAR_GP_EEDO,
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SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */
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0,
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SAR_GP_EESCLK /* 0 */
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};
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static u32 clktab[] =
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{
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0,
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SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK,
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0,
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SAR_GP_EESCLK,
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0
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};
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static u32
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idt77252_read_gp(struct idt77252_dev *card)
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{
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u32 gp;
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gp = readl(SAR_REG_GP);
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#if 0
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printk("RD: %s\n", gp & SAR_GP_EEDI ? "1" : "0");
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#endif
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return gp;
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}
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static void
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idt77252_write_gp(struct idt77252_dev *card, u32 value)
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{
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unsigned long flags;
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#if 0
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printk("WR: %s %s %s\n", value & SAR_GP_EECS ? " " : "/CS",
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value & SAR_GP_EESCLK ? "HIGH" : "LOW ",
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value & SAR_GP_EEDO ? "1" : "0");
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#endif
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spin_lock_irqsave(&card->cmd_lock, flags);
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waitfor_idle(card);
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writel(value, SAR_REG_GP);
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spin_unlock_irqrestore(&card->cmd_lock, flags);
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}
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static u8
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idt77252_eeprom_read_status(struct idt77252_dev *card)
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{
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u8 byte;
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u32 gp;
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int i, j;
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gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO);
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for (i = 0; i < ARRAY_SIZE(rdsrtab); i++) {
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idt77252_write_gp(card, gp | rdsrtab[i]);
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udelay(5);
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}
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idt77252_write_gp(card, gp | SAR_GP_EECS);
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udelay(5);
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byte = 0;
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for (i = 0, j = 0; i < 8; i++) {
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byte <<= 1;
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idt77252_write_gp(card, gp | clktab[j++]);
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udelay(5);
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byte |= idt77252_read_gp(card) & SAR_GP_EEDI ? 1 : 0;
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idt77252_write_gp(card, gp | clktab[j++]);
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udelay(5);
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}
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idt77252_write_gp(card, gp | SAR_GP_EECS);
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udelay(5);
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return byte;
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}
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static u8
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idt77252_eeprom_read_byte(struct idt77252_dev *card, u8 offset)
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{
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u8 byte;
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u32 gp;
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int i, j;
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gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO);
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for (i = 0; i < ARRAY_SIZE(rdtab); i++) {
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idt77252_write_gp(card, gp | rdtab[i]);
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udelay(5);
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}
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idt77252_write_gp(card, gp | SAR_GP_EECS);
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udelay(5);
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for (i = 0, j = 0; i < 8; i++) {
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idt77252_write_gp(card, gp | clktab[j++] |
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(offset & 1 ? SAR_GP_EEDO : 0));
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udelay(5);
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idt77252_write_gp(card, gp | clktab[j++] |
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(offset & 1 ? SAR_GP_EEDO : 0));
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udelay(5);
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offset >>= 1;
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}
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idt77252_write_gp(card, gp | SAR_GP_EECS);
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udelay(5);
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byte = 0;
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for (i = 0, j = 0; i < 8; i++) {
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byte <<= 1;
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idt77252_write_gp(card, gp | clktab[j++]);
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udelay(5);
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byte |= idt77252_read_gp(card) & SAR_GP_EEDI ? 1 : 0;
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idt77252_write_gp(card, gp | clktab[j++]);
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udelay(5);
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}
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idt77252_write_gp(card, gp | SAR_GP_EECS);
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udelay(5);
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return byte;
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}
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static void
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idt77252_eeprom_write_byte(struct idt77252_dev *card, u8 offset, u8 data)
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{
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u32 gp;
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int i, j;
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gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO);
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for (i = 0; i < ARRAY_SIZE(wrentab); i++) {
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idt77252_write_gp(card, gp | wrentab[i]);
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udelay(5);
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}
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idt77252_write_gp(card, gp | SAR_GP_EECS);
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udelay(5);
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for (i = 0; i < ARRAY_SIZE(wrtab); i++) {
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idt77252_write_gp(card, gp | wrtab[i]);
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udelay(5);
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}
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idt77252_write_gp(card, gp | SAR_GP_EECS);
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udelay(5);
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for (i = 0, j = 0; i < 8; i++) {
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idt77252_write_gp(card, gp | clktab[j++] |
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(offset & 1 ? SAR_GP_EEDO : 0));
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udelay(5);
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idt77252_write_gp(card, gp | clktab[j++] |
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(offset & 1 ? SAR_GP_EEDO : 0));
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udelay(5);
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offset >>= 1;
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}
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idt77252_write_gp(card, gp | SAR_GP_EECS);
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udelay(5);
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|
|
for (i = 0, j = 0; i < 8; i++) {
|
|
idt77252_write_gp(card, gp | clktab[j++] |
|
|
(data & 1 ? SAR_GP_EEDO : 0));
|
|
udelay(5);
|
|
|
|
idt77252_write_gp(card, gp | clktab[j++] |
|
|
(data & 1 ? SAR_GP_EEDO : 0));
|
|
udelay(5);
|
|
|
|
data >>= 1;
|
|
}
|
|
idt77252_write_gp(card, gp | SAR_GP_EECS);
|
|
udelay(5);
|
|
}
|
|
|
|
static void
|
|
idt77252_eeprom_init(struct idt77252_dev *card)
|
|
{
|
|
u32 gp;
|
|
|
|
gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO);
|
|
|
|
idt77252_write_gp(card, gp | SAR_GP_EECS | SAR_GP_EESCLK);
|
|
udelay(5);
|
|
idt77252_write_gp(card, gp | SAR_GP_EECS);
|
|
udelay(5);
|
|
idt77252_write_gp(card, gp | SAR_GP_EECS | SAR_GP_EESCLK);
|
|
udelay(5);
|
|
idt77252_write_gp(card, gp | SAR_GP_EECS);
|
|
udelay(5);
|
|
}
|
|
#endif /* HAVE_EEPROM */
|
|
|
|
|
|
#ifdef CONFIG_ATM_IDT77252_DEBUG
|
|
static void
|
|
dump_tct(struct idt77252_dev *card, int index)
|
|
{
|
|
unsigned long tct;
|
|
int i;
|
|
|
|
tct = (unsigned long) (card->tct_base + index * SAR_SRAM_TCT_SIZE);
|
|
|
|
printk("%s: TCT %x:", card->name, index);
|
|
for (i = 0; i < 8; i++) {
|
|
printk(" %08x", read_sram(card, tct + i));
|
|
}
|
|
printk("\n");
|
|
}
|
|
|
|
static void
|
|
idt77252_tx_dump(struct idt77252_dev *card)
|
|
{
|
|
struct atm_vcc *vcc;
|
|
struct vc_map *vc;
|
|
int i;
|
|
|
|
printk("%s\n", __FUNCTION__);
|
|
for (i = 0; i < card->tct_size; i++) {
|
|
vc = card->vcs[i];
|
|
if (!vc)
|
|
continue;
|
|
|
|
vcc = NULL;
|
|
if (vc->rx_vcc)
|
|
vcc = vc->rx_vcc;
|
|
else if (vc->tx_vcc)
|
|
vcc = vc->tx_vcc;
|
|
|
|
if (!vcc)
|
|
continue;
|
|
|
|
printk("%s: Connection %d:\n", card->name, vc->index);
|
|
dump_tct(card, vc->index);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* SCQ Handling */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
static int
|
|
sb_pool_add(struct idt77252_dev *card, struct sk_buff *skb, int queue)
|
|
{
|
|
struct sb_pool *pool = &card->sbpool[queue];
|
|
int index;
|
|
|
|
index = pool->index;
|
|
while (pool->skb[index]) {
|
|
index = (index + 1) & FBQ_MASK;
|
|
if (index == pool->index)
|
|
return -ENOBUFS;
|
|
}
|
|
|
|
pool->skb[index] = skb;
|
|
IDT77252_PRV_POOL(skb) = POOL_HANDLE(queue, index);
|
|
|
|
pool->index = (index + 1) & FBQ_MASK;
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
sb_pool_remove(struct idt77252_dev *card, struct sk_buff *skb)
|
|
{
|
|
unsigned int queue, index;
|
|
u32 handle;
|
|
|
|
handle = IDT77252_PRV_POOL(skb);
|
|
|
|
queue = POOL_QUEUE(handle);
|
|
if (queue > 3)
|
|
return;
|
|
|
|
index = POOL_INDEX(handle);
|
|
if (index > FBQ_SIZE - 1)
|
|
return;
|
|
|
|
card->sbpool[queue].skb[index] = NULL;
|
|
}
|
|
|
|
static struct sk_buff *
|
|
sb_pool_skb(struct idt77252_dev *card, u32 handle)
|
|
{
|
|
unsigned int queue, index;
|
|
|
|
queue = POOL_QUEUE(handle);
|
|
if (queue > 3)
|
|
return NULL;
|
|
|
|
index = POOL_INDEX(handle);
|
|
if (index > FBQ_SIZE - 1)
|
|
return NULL;
|
|
|
|
return card->sbpool[queue].skb[index];
|
|
}
|
|
|
|
static struct scq_info *
|
|
alloc_scq(struct idt77252_dev *card, int class)
|
|
{
|
|
struct scq_info *scq;
|
|
|
|
scq = kzalloc(sizeof(struct scq_info), GFP_KERNEL);
|
|
if (!scq)
|
|
return NULL;
|
|
scq->base = pci_alloc_consistent(card->pcidev, SCQ_SIZE,
|
|
&scq->paddr);
|
|
if (scq->base == NULL) {
|
|
kfree(scq);
|
|
return NULL;
|
|
}
|
|
memset(scq->base, 0, SCQ_SIZE);
|
|
|
|
scq->next = scq->base;
|
|
scq->last = scq->base + (SCQ_ENTRIES - 1);
|
|
atomic_set(&scq->used, 0);
|
|
|
|
spin_lock_init(&scq->lock);
|
|
spin_lock_init(&scq->skblock);
|
|
|
|
skb_queue_head_init(&scq->transmit);
|
|
skb_queue_head_init(&scq->pending);
|
|
|
|
TXPRINTK("idt77252: SCQ: base 0x%p, next 0x%p, last 0x%p, paddr %08llx\n",
|
|
scq->base, scq->next, scq->last, (unsigned long long)scq->paddr);
|
|
|
|
return scq;
|
|
}
|
|
|
|
static void
|
|
free_scq(struct idt77252_dev *card, struct scq_info *scq)
|
|
{
|
|
struct sk_buff *skb;
|
|
struct atm_vcc *vcc;
|
|
|
|
pci_free_consistent(card->pcidev, SCQ_SIZE,
|
|
scq->base, scq->paddr);
|
|
|
|
while ((skb = skb_dequeue(&scq->transmit))) {
|
|
pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
|
|
skb->len, PCI_DMA_TODEVICE);
|
|
|
|
vcc = ATM_SKB(skb)->vcc;
|
|
if (vcc->pop)
|
|
vcc->pop(vcc, skb);
|
|
else
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
while ((skb = skb_dequeue(&scq->pending))) {
|
|
pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
|
|
skb->len, PCI_DMA_TODEVICE);
|
|
|
|
vcc = ATM_SKB(skb)->vcc;
|
|
if (vcc->pop)
|
|
vcc->pop(vcc, skb);
|
|
else
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
kfree(scq);
|
|
}
|
|
|
|
|
|
static int
|
|
push_on_scq(struct idt77252_dev *card, struct vc_map *vc, struct sk_buff *skb)
|
|
{
|
|
struct scq_info *scq = vc->scq;
|
|
unsigned long flags;
|
|
struct scqe *tbd;
|
|
int entries;
|
|
|
|
TXPRINTK("%s: SCQ: next 0x%p\n", card->name, scq->next);
|
|
|
|
atomic_inc(&scq->used);
|
|
entries = atomic_read(&scq->used);
|
|
if (entries > (SCQ_ENTRIES - 1)) {
|
|
atomic_dec(&scq->used);
|
|
goto out;
|
|
}
|
|
|
|
skb_queue_tail(&scq->transmit, skb);
|
|
|
|
spin_lock_irqsave(&vc->lock, flags);
|
|
if (vc->estimator) {
|
|
struct atm_vcc *vcc = vc->tx_vcc;
|
|
struct sock *sk = sk_atm(vcc);
|
|
|
|
vc->estimator->cells += (skb->len + 47) / 48;
|
|
if (atomic_read(&sk->sk_wmem_alloc) >
|
|
(sk->sk_sndbuf >> 1)) {
|
|
u32 cps = vc->estimator->maxcps;
|
|
|
|
vc->estimator->cps = cps;
|
|
vc->estimator->avcps = cps << 5;
|
|
if (vc->lacr < vc->init_er) {
|
|
vc->lacr = vc->init_er;
|
|
writel(TCMDQ_LACR | (vc->lacr << 16) |
|
|
vc->index, SAR_REG_TCMDQ);
|
|
}
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&vc->lock, flags);
|
|
|
|
tbd = &IDT77252_PRV_TBD(skb);
|
|
|
|
spin_lock_irqsave(&scq->lock, flags);
|
|
scq->next->word_1 = cpu_to_le32(tbd->word_1 |
|
|
SAR_TBD_TSIF | SAR_TBD_GTSI);
|
|
scq->next->word_2 = cpu_to_le32(tbd->word_2);
|
|
scq->next->word_3 = cpu_to_le32(tbd->word_3);
|
|
scq->next->word_4 = cpu_to_le32(tbd->word_4);
|
|
|
|
if (scq->next == scq->last)
|
|
scq->next = scq->base;
|
|
else
|
|
scq->next++;
|
|
|
|
write_sram(card, scq->scd,
|
|
scq->paddr +
|
|
(u32)((unsigned long)scq->next - (unsigned long)scq->base));
|
|
spin_unlock_irqrestore(&scq->lock, flags);
|
|
|
|
scq->trans_start = jiffies;
|
|
|
|
if (test_and_clear_bit(VCF_IDLE, &vc->flags)) {
|
|
writel(TCMDQ_START_LACR | (vc->lacr << 16) | vc->index,
|
|
SAR_REG_TCMDQ);
|
|
}
|
|
|
|
TXPRINTK("%d entries in SCQ used (push).\n", atomic_read(&scq->used));
|
|
|
|
XPRINTK("%s: SCQ (after push %2d) head = 0x%x, next = 0x%p.\n",
|
|
card->name, atomic_read(&scq->used),
|
|
read_sram(card, scq->scd + 1), scq->next);
|
|
|
|
return 0;
|
|
|
|
out:
|
|
if (time_after(jiffies, scq->trans_start + HZ)) {
|
|
printk("%s: Error pushing TBD for %d.%d\n",
|
|
card->name, vc->tx_vcc->vpi, vc->tx_vcc->vci);
|
|
#ifdef CONFIG_ATM_IDT77252_DEBUG
|
|
idt77252_tx_dump(card);
|
|
#endif
|
|
scq->trans_start = jiffies;
|
|
}
|
|
|
|
return -ENOBUFS;
|
|
}
|
|
|
|
|
|
static void
|
|
drain_scq(struct idt77252_dev *card, struct vc_map *vc)
|
|
{
|
|
struct scq_info *scq = vc->scq;
|
|
struct sk_buff *skb;
|
|
struct atm_vcc *vcc;
|
|
|
|
TXPRINTK("%s: SCQ (before drain %2d) next = 0x%p.\n",
|
|
card->name, atomic_read(&scq->used), scq->next);
|
|
|
|
skb = skb_dequeue(&scq->transmit);
|
|
if (skb) {
|
|
TXPRINTK("%s: freeing skb at %p.\n", card->name, skb);
|
|
|
|
pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
|
|
skb->len, PCI_DMA_TODEVICE);
|
|
|
|
vcc = ATM_SKB(skb)->vcc;
|
|
|
|
if (vcc->pop)
|
|
vcc->pop(vcc, skb);
|
|
else
|
|
dev_kfree_skb(skb);
|
|
|
|
atomic_inc(&vcc->stats->tx);
|
|
}
|
|
|
|
atomic_dec(&scq->used);
|
|
|
|
spin_lock(&scq->skblock);
|
|
while ((skb = skb_dequeue(&scq->pending))) {
|
|
if (push_on_scq(card, vc, skb)) {
|
|
skb_queue_head(&vc->scq->pending, skb);
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock(&scq->skblock);
|
|
}
|
|
|
|
static int
|
|
queue_skb(struct idt77252_dev *card, struct vc_map *vc,
|
|
struct sk_buff *skb, int oam)
|
|
{
|
|
struct atm_vcc *vcc;
|
|
struct scqe *tbd;
|
|
unsigned long flags;
|
|
int error;
|
|
int aal;
|
|
|
|
if (skb->len == 0) {
|
|
printk("%s: invalid skb->len (%d)\n", card->name, skb->len);
|
|
return -EINVAL;
|
|
}
|
|
|
|
TXPRINTK("%s: Sending %d bytes of data.\n",
|
|
card->name, skb->len);
|
|
|
|
tbd = &IDT77252_PRV_TBD(skb);
|
|
vcc = ATM_SKB(skb)->vcc;
|
|
|
|
IDT77252_PRV_PADDR(skb) = pci_map_single(card->pcidev, skb->data,
|
|
skb->len, PCI_DMA_TODEVICE);
|
|
|
|
error = -EINVAL;
|
|
|
|
if (oam) {
|
|
if (skb->len != 52)
|
|
goto errout;
|
|
|
|
tbd->word_1 = SAR_TBD_OAM | ATM_CELL_PAYLOAD | SAR_TBD_EPDU;
|
|
tbd->word_2 = IDT77252_PRV_PADDR(skb) + 4;
|
|
tbd->word_3 = 0x00000000;
|
|
tbd->word_4 = (skb->data[0] << 24) | (skb->data[1] << 16) |
|
|
(skb->data[2] << 8) | (skb->data[3] << 0);
|
|
|
|
if (test_bit(VCF_RSV, &vc->flags))
|
|
vc = card->vcs[0];
|
|
|
|
goto done;
|
|
}
|
|
|
|
if (test_bit(VCF_RSV, &vc->flags)) {
|
|
printk("%s: Trying to transmit on reserved VC\n", card->name);
|
|
goto errout;
|
|
}
|
|
|
|
aal = vcc->qos.aal;
|
|
|
|
switch (aal) {
|
|
case ATM_AAL0:
|
|
case ATM_AAL34:
|
|
if (skb->len > 52)
|
|
goto errout;
|
|
|
|
if (aal == ATM_AAL0)
|
|
tbd->word_1 = SAR_TBD_EPDU | SAR_TBD_AAL0 |
|
|
ATM_CELL_PAYLOAD;
|
|
else
|
|
tbd->word_1 = SAR_TBD_EPDU | SAR_TBD_AAL34 |
|
|
ATM_CELL_PAYLOAD;
|
|
|
|
tbd->word_2 = IDT77252_PRV_PADDR(skb) + 4;
|
|
tbd->word_3 = 0x00000000;
|
|
tbd->word_4 = (skb->data[0] << 24) | (skb->data[1] << 16) |
|
|
(skb->data[2] << 8) | (skb->data[3] << 0);
|
|
break;
|
|
|
|
case ATM_AAL5:
|
|
tbd->word_1 = SAR_TBD_EPDU | SAR_TBD_AAL5 | skb->len;
|
|
tbd->word_2 = IDT77252_PRV_PADDR(skb);
|
|
tbd->word_3 = skb->len;
|
|
tbd->word_4 = (vcc->vpi << SAR_TBD_VPI_SHIFT) |
|
|
(vcc->vci << SAR_TBD_VCI_SHIFT);
|
|
break;
|
|
|
|
case ATM_AAL1:
|
|
case ATM_AAL2:
|
|
default:
|
|
printk("%s: Traffic type not supported.\n", card->name);
|
|
error = -EPROTONOSUPPORT;
|
|
goto errout;
|
|
}
|
|
|
|
done:
|
|
spin_lock_irqsave(&vc->scq->skblock, flags);
|
|
skb_queue_tail(&vc->scq->pending, skb);
|
|
|
|
while ((skb = skb_dequeue(&vc->scq->pending))) {
|
|
if (push_on_scq(card, vc, skb)) {
|
|
skb_queue_head(&vc->scq->pending, skb);
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&vc->scq->skblock, flags);
|
|
|
|
return 0;
|
|
|
|
errout:
|
|
pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
|
|
skb->len, PCI_DMA_TODEVICE);
|
|
return error;
|
|
}
|
|
|
|
static unsigned long
|
|
get_free_scd(struct idt77252_dev *card, struct vc_map *vc)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < card->scd_size; i++) {
|
|
if (!card->scd2vc[i]) {
|
|
card->scd2vc[i] = vc;
|
|
vc->scd_index = i;
|
|
return card->scd_base + i * SAR_SRAM_SCD_SIZE;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
fill_scd(struct idt77252_dev *card, struct scq_info *scq, int class)
|
|
{
|
|
write_sram(card, scq->scd, scq->paddr);
|
|
write_sram(card, scq->scd + 1, 0x00000000);
|
|
write_sram(card, scq->scd + 2, 0xffffffff);
|
|
write_sram(card, scq->scd + 3, 0x00000000);
|
|
}
|
|
|
|
static void
|
|
clear_scd(struct idt77252_dev *card, struct scq_info *scq, int class)
|
|
{
|
|
return;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* RSQ Handling */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
static int
|
|
init_rsq(struct idt77252_dev *card)
|
|
{
|
|
struct rsq_entry *rsqe;
|
|
|
|
card->rsq.base = pci_alloc_consistent(card->pcidev, RSQSIZE,
|
|
&card->rsq.paddr);
|
|
if (card->rsq.base == NULL) {
|
|
printk("%s: can't allocate RSQ.\n", card->name);
|
|
return -1;
|
|
}
|
|
memset(card->rsq.base, 0, RSQSIZE);
|
|
|
|
card->rsq.last = card->rsq.base + RSQ_NUM_ENTRIES - 1;
|
|
card->rsq.next = card->rsq.last;
|
|
for (rsqe = card->rsq.base; rsqe <= card->rsq.last; rsqe++)
|
|
rsqe->word_4 = 0;
|
|
|
|
writel((unsigned long) card->rsq.last - (unsigned long) card->rsq.base,
|
|
SAR_REG_RSQH);
|
|
writel(card->rsq.paddr, SAR_REG_RSQB);
|
|
|
|
IPRINTK("%s: RSQ base at 0x%lx (0x%x).\n", card->name,
|
|
(unsigned long) card->rsq.base,
|
|
readl(SAR_REG_RSQB));
|
|
IPRINTK("%s: RSQ head = 0x%x, base = 0x%x, tail = 0x%x.\n",
|
|
card->name,
|
|
readl(SAR_REG_RSQH),
|
|
readl(SAR_REG_RSQB),
|
|
readl(SAR_REG_RSQT));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
deinit_rsq(struct idt77252_dev *card)
|
|
{
|
|
pci_free_consistent(card->pcidev, RSQSIZE,
|
|
card->rsq.base, card->rsq.paddr);
|
|
}
|
|
|
|
static void
|
|
dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
|
|
{
|
|
struct atm_vcc *vcc;
|
|
struct sk_buff *skb;
|
|
struct rx_pool *rpp;
|
|
struct vc_map *vc;
|
|
u32 header, vpi, vci;
|
|
u32 stat;
|
|
int i;
|
|
|
|
stat = le32_to_cpu(rsqe->word_4);
|
|
|
|
if (stat & SAR_RSQE_IDLE) {
|
|
RXPRINTK("%s: message about inactive connection.\n",
|
|
card->name);
|
|
return;
|
|
}
|
|
|
|
skb = sb_pool_skb(card, le32_to_cpu(rsqe->word_2));
|
|
if (skb == NULL) {
|
|
printk("%s: NULL skb in %s, rsqe: %08x %08x %08x %08x\n",
|
|
card->name, __FUNCTION__,
|
|
le32_to_cpu(rsqe->word_1), le32_to_cpu(rsqe->word_2),
|
|
le32_to_cpu(rsqe->word_3), le32_to_cpu(rsqe->word_4));
|
|
return;
|
|
}
|
|
|
|
header = le32_to_cpu(rsqe->word_1);
|
|
vpi = (header >> 16) & 0x00ff;
|
|
vci = (header >> 0) & 0xffff;
|
|
|
|
RXPRINTK("%s: SDU for %d.%d received in buffer 0x%p (data 0x%p).\n",
|
|
card->name, vpi, vci, skb, skb->data);
|
|
|
|
if ((vpi >= (1 << card->vpibits)) || (vci != (vci & card->vcimask))) {
|
|
printk("%s: SDU received for out-of-range vc %u.%u\n",
|
|
card->name, vpi, vci);
|
|
recycle_rx_skb(card, skb);
|
|
return;
|
|
}
|
|
|
|
vc = card->vcs[VPCI2VC(card, vpi, vci)];
|
|
if (!vc || !test_bit(VCF_RX, &vc->flags)) {
|
|
printk("%s: SDU received on non RX vc %u.%u\n",
|
|
card->name, vpi, vci);
|
|
recycle_rx_skb(card, skb);
|
|
return;
|
|
}
|
|
|
|
vcc = vc->rx_vcc;
|
|
|
|
pci_dma_sync_single_for_cpu(card->pcidev, IDT77252_PRV_PADDR(skb),
|
|
skb->end - skb->data, PCI_DMA_FROMDEVICE);
|
|
|
|
if ((vcc->qos.aal == ATM_AAL0) ||
|
|
(vcc->qos.aal == ATM_AAL34)) {
|
|
struct sk_buff *sb;
|
|
unsigned char *cell;
|
|
u32 aal0;
|
|
|
|
cell = skb->data;
|
|
for (i = (stat & SAR_RSQE_CELLCNT); i; i--) {
|
|
if ((sb = dev_alloc_skb(64)) == NULL) {
|
|
printk("%s: Can't allocate buffers for aal0.\n",
|
|
card->name);
|
|
atomic_add(i, &vcc->stats->rx_drop);
|
|
break;
|
|
}
|
|
if (!atm_charge(vcc, sb->truesize)) {
|
|
RXPRINTK("%s: atm_charge() dropped aal0 packets.\n",
|
|
card->name);
|
|
atomic_add(i - 1, &vcc->stats->rx_drop);
|
|
dev_kfree_skb(sb);
|
|
break;
|
|
}
|
|
aal0 = (vpi << ATM_HDR_VPI_SHIFT) |
|
|
(vci << ATM_HDR_VCI_SHIFT);
|
|
aal0 |= (stat & SAR_RSQE_EPDU) ? 0x00000002 : 0;
|
|
aal0 |= (stat & SAR_RSQE_CLP) ? 0x00000001 : 0;
|
|
|
|
*((u32 *) sb->data) = aal0;
|
|
skb_put(sb, sizeof(u32));
|
|
memcpy(skb_put(sb, ATM_CELL_PAYLOAD),
|
|
cell, ATM_CELL_PAYLOAD);
|
|
|
|
ATM_SKB(sb)->vcc = vcc;
|
|
__net_timestamp(sb);
|
|
vcc->push(vcc, sb);
|
|
atomic_inc(&vcc->stats->rx);
|
|
|
|
cell += ATM_CELL_PAYLOAD;
|
|
}
|
|
|
|
recycle_rx_skb(card, skb);
|
|
return;
|
|
}
|
|
if (vcc->qos.aal != ATM_AAL5) {
|
|
printk("%s: Unexpected AAL type in dequeue_rx(): %d.\n",
|
|
card->name, vcc->qos.aal);
|
|
recycle_rx_skb(card, skb);
|
|
return;
|
|
}
|
|
skb->len = (stat & SAR_RSQE_CELLCNT) * ATM_CELL_PAYLOAD;
|
|
|
|
rpp = &vc->rcv.rx_pool;
|
|
|
|
rpp->len += skb->len;
|
|
if (!rpp->count++)
|
|
rpp->first = skb;
|
|
*rpp->last = skb;
|
|
rpp->last = &skb->next;
|
|
|
|
if (stat & SAR_RSQE_EPDU) {
|
|
unsigned char *l1l2;
|
|
unsigned int len;
|
|
|
|
l1l2 = (unsigned char *) ((unsigned long) skb->data + skb->len - 6);
|
|
|
|
len = (l1l2[0] << 8) | l1l2[1];
|
|
len = len ? len : 0x10000;
|
|
|
|
RXPRINTK("%s: PDU has %d bytes.\n", card->name, len);
|
|
|
|
if ((len + 8 > rpp->len) || (len + (47 + 8) < rpp->len)) {
|
|
RXPRINTK("%s: AAL5 PDU size mismatch: %d != %d. "
|
|
"(CDC: %08x)\n",
|
|
card->name, len, rpp->len, readl(SAR_REG_CDC));
|
|
recycle_rx_pool_skb(card, rpp);
|
|
atomic_inc(&vcc->stats->rx_err);
|
|
return;
|
|
}
|
|
if (stat & SAR_RSQE_CRC) {
|
|
RXPRINTK("%s: AAL5 CRC error.\n", card->name);
|
|
recycle_rx_pool_skb(card, rpp);
|
|
atomic_inc(&vcc->stats->rx_err);
|
|
return;
|
|
}
|
|
if (rpp->count > 1) {
|
|
struct sk_buff *sb;
|
|
|
|
skb = dev_alloc_skb(rpp->len);
|
|
if (!skb) {
|
|
RXPRINTK("%s: Can't alloc RX skb.\n",
|
|
card->name);
|
|
recycle_rx_pool_skb(card, rpp);
|
|
atomic_inc(&vcc->stats->rx_err);
|
|
return;
|
|
}
|
|
if (!atm_charge(vcc, skb->truesize)) {
|
|
recycle_rx_pool_skb(card, rpp);
|
|
dev_kfree_skb(skb);
|
|
return;
|
|
}
|
|
sb = rpp->first;
|
|
for (i = 0; i < rpp->count; i++) {
|
|
memcpy(skb_put(skb, sb->len),
|
|
sb->data, sb->len);
|
|
sb = sb->next;
|
|
}
|
|
|
|
recycle_rx_pool_skb(card, rpp);
|
|
|
|
skb_trim(skb, len);
|
|
ATM_SKB(skb)->vcc = vcc;
|
|
__net_timestamp(skb);
|
|
|
|
vcc->push(vcc, skb);
|
|
atomic_inc(&vcc->stats->rx);
|
|
|
|
return;
|
|
}
|
|
|
|
skb->next = NULL;
|
|
flush_rx_pool(card, rpp);
|
|
|
|
if (!atm_charge(vcc, skb->truesize)) {
|
|
recycle_rx_skb(card, skb);
|
|
return;
|
|
}
|
|
|
|
pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
|
|
skb->end - skb->data, PCI_DMA_FROMDEVICE);
|
|
sb_pool_remove(card, skb);
|
|
|
|
skb_trim(skb, len);
|
|
ATM_SKB(skb)->vcc = vcc;
|
|
__net_timestamp(skb);
|
|
|
|
vcc->push(vcc, skb);
|
|
atomic_inc(&vcc->stats->rx);
|
|
|
|
if (skb->truesize > SAR_FB_SIZE_3)
|
|
add_rx_skb(card, 3, SAR_FB_SIZE_3, 1);
|
|
else if (skb->truesize > SAR_FB_SIZE_2)
|
|
add_rx_skb(card, 2, SAR_FB_SIZE_2, 1);
|
|
else if (skb->truesize > SAR_FB_SIZE_1)
|
|
add_rx_skb(card, 1, SAR_FB_SIZE_1, 1);
|
|
else
|
|
add_rx_skb(card, 0, SAR_FB_SIZE_0, 1);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void
|
|
idt77252_rx(struct idt77252_dev *card)
|
|
{
|
|
struct rsq_entry *rsqe;
|
|
|
|
if (card->rsq.next == card->rsq.last)
|
|
rsqe = card->rsq.base;
|
|
else
|
|
rsqe = card->rsq.next + 1;
|
|
|
|
if (!(le32_to_cpu(rsqe->word_4) & SAR_RSQE_VALID)) {
|
|
RXPRINTK("%s: no entry in RSQ.\n", card->name);
|
|
return;
|
|
}
|
|
|
|
do {
|
|
dequeue_rx(card, rsqe);
|
|
rsqe->word_4 = 0;
|
|
card->rsq.next = rsqe;
|
|
if (card->rsq.next == card->rsq.last)
|
|
rsqe = card->rsq.base;
|
|
else
|
|
rsqe = card->rsq.next + 1;
|
|
} while (le32_to_cpu(rsqe->word_4) & SAR_RSQE_VALID);
|
|
|
|
writel((unsigned long) card->rsq.next - (unsigned long) card->rsq.base,
|
|
SAR_REG_RSQH);
|
|
}
|
|
|
|
static void
|
|
idt77252_rx_raw(struct idt77252_dev *card)
|
|
{
|
|
struct sk_buff *queue;
|
|
u32 head, tail;
|
|
struct atm_vcc *vcc;
|
|
struct vc_map *vc;
|
|
struct sk_buff *sb;
|
|
|
|
if (card->raw_cell_head == NULL) {
|
|
u32 handle = le32_to_cpu(*(card->raw_cell_hnd + 1));
|
|
card->raw_cell_head = sb_pool_skb(card, handle);
|
|
}
|
|
|
|
queue = card->raw_cell_head;
|
|
if (!queue)
|
|
return;
|
|
|
|
head = IDT77252_PRV_PADDR(queue) + (queue->data - queue->head - 16);
|
|
tail = readl(SAR_REG_RAWCT);
|
|
|
|
pci_dma_sync_single_for_cpu(card->pcidev, IDT77252_PRV_PADDR(queue),
|
|
queue->end - queue->head - 16,
|
|
PCI_DMA_FROMDEVICE);
|
|
|
|
while (head != tail) {
|
|
unsigned int vpi, vci, pti;
|
|
u32 header;
|
|
|
|
header = le32_to_cpu(*(u32 *) &queue->data[0]);
|
|
|
|
vpi = (header & ATM_HDR_VPI_MASK) >> ATM_HDR_VPI_SHIFT;
|
|
vci = (header & ATM_HDR_VCI_MASK) >> ATM_HDR_VCI_SHIFT;
|
|
pti = (header & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT;
|
|
|
|
#ifdef CONFIG_ATM_IDT77252_DEBUG
|
|
if (debug & DBG_RAW_CELL) {
|
|
int i;
|
|
|
|
printk("%s: raw cell %x.%02x.%04x.%x.%x\n",
|
|
card->name, (header >> 28) & 0x000f,
|
|
(header >> 20) & 0x00ff,
|
|
(header >> 4) & 0xffff,
|
|
(header >> 1) & 0x0007,
|
|
(header >> 0) & 0x0001);
|
|
for (i = 16; i < 64; i++)
|
|
printk(" %02x", queue->data[i]);
|
|
printk("\n");
|
|
}
|
|
#endif
|
|
|
|
if (vpi >= (1<<card->vpibits) || vci >= (1<<card->vcibits)) {
|
|
RPRINTK("%s: SDU received for out-of-range vc %u.%u\n",
|
|
card->name, vpi, vci);
|
|
goto drop;
|
|
}
|
|
|
|
vc = card->vcs[VPCI2VC(card, vpi, vci)];
|
|
if (!vc || !test_bit(VCF_RX, &vc->flags)) {
|
|
RPRINTK("%s: SDU received on non RX vc %u.%u\n",
|
|
card->name, vpi, vci);
|
|
goto drop;
|
|
}
|
|
|
|
vcc = vc->rx_vcc;
|
|
|
|
if (vcc->qos.aal != ATM_AAL0) {
|
|
RPRINTK("%s: raw cell for non AAL0 vc %u.%u\n",
|
|
card->name, vpi, vci);
|
|
atomic_inc(&vcc->stats->rx_drop);
|
|
goto drop;
|
|
}
|
|
|
|
if ((sb = dev_alloc_skb(64)) == NULL) {
|
|
printk("%s: Can't allocate buffers for AAL0.\n",
|
|
card->name);
|
|
atomic_inc(&vcc->stats->rx_err);
|
|
goto drop;
|
|
}
|
|
|
|
if (!atm_charge(vcc, sb->truesize)) {
|
|
RXPRINTK("%s: atm_charge() dropped AAL0 packets.\n",
|
|
card->name);
|
|
dev_kfree_skb(sb);
|
|
goto drop;
|
|
}
|
|
|
|
*((u32 *) sb->data) = header;
|
|
skb_put(sb, sizeof(u32));
|
|
memcpy(skb_put(sb, ATM_CELL_PAYLOAD), &(queue->data[16]),
|
|
ATM_CELL_PAYLOAD);
|
|
|
|
ATM_SKB(sb)->vcc = vcc;
|
|
__net_timestamp(sb);
|
|
vcc->push(vcc, sb);
|
|
atomic_inc(&vcc->stats->rx);
|
|
|
|
drop:
|
|
skb_pull(queue, 64);
|
|
|
|
head = IDT77252_PRV_PADDR(queue)
|
|
+ (queue->data - queue->head - 16);
|
|
|
|
if (queue->len < 128) {
|
|
struct sk_buff *next;
|
|
u32 handle;
|
|
|
|
head = le32_to_cpu(*(u32 *) &queue->data[0]);
|
|
handle = le32_to_cpu(*(u32 *) &queue->data[4]);
|
|
|
|
next = sb_pool_skb(card, handle);
|
|
recycle_rx_skb(card, queue);
|
|
|
|
if (next) {
|
|
card->raw_cell_head = next;
|
|
queue = card->raw_cell_head;
|
|
pci_dma_sync_single_for_cpu(card->pcidev,
|
|
IDT77252_PRV_PADDR(queue),
|
|
queue->end - queue->data,
|
|
PCI_DMA_FROMDEVICE);
|
|
} else {
|
|
card->raw_cell_head = NULL;
|
|
printk("%s: raw cell queue overrun\n",
|
|
card->name);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* TSQ Handling */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
static int
|
|
init_tsq(struct idt77252_dev *card)
|
|
{
|
|
struct tsq_entry *tsqe;
|
|
|
|
card->tsq.base = pci_alloc_consistent(card->pcidev, RSQSIZE,
|
|
&card->tsq.paddr);
|
|
if (card->tsq.base == NULL) {
|
|
printk("%s: can't allocate TSQ.\n", card->name);
|
|
return -1;
|
|
}
|
|
memset(card->tsq.base, 0, TSQSIZE);
|
|
|
|
card->tsq.last = card->tsq.base + TSQ_NUM_ENTRIES - 1;
|
|
card->tsq.next = card->tsq.last;
|
|
for (tsqe = card->tsq.base; tsqe <= card->tsq.last; tsqe++)
|
|
tsqe->word_2 = cpu_to_le32(SAR_TSQE_INVALID);
|
|
|
|
writel(card->tsq.paddr, SAR_REG_TSQB);
|
|
writel((unsigned long) card->tsq.next - (unsigned long) card->tsq.base,
|
|
SAR_REG_TSQH);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
deinit_tsq(struct idt77252_dev *card)
|
|
{
|
|
pci_free_consistent(card->pcidev, TSQSIZE,
|
|
card->tsq.base, card->tsq.paddr);
|
|
}
|
|
|
|
static void
|
|
idt77252_tx(struct idt77252_dev *card)
|
|
{
|
|
struct tsq_entry *tsqe;
|
|
unsigned int vpi, vci;
|
|
struct vc_map *vc;
|
|
u32 conn, stat;
|
|
|
|
if (card->tsq.next == card->tsq.last)
|
|
tsqe = card->tsq.base;
|
|
else
|
|
tsqe = card->tsq.next + 1;
|
|
|
|
TXPRINTK("idt77252_tx: tsq %p: base %p, next %p, last %p\n", tsqe,
|
|
card->tsq.base, card->tsq.next, card->tsq.last);
|
|
TXPRINTK("idt77252_tx: tsqb %08x, tsqt %08x, tsqh %08x, \n",
|
|
readl(SAR_REG_TSQB),
|
|
readl(SAR_REG_TSQT),
|
|
readl(SAR_REG_TSQH));
|
|
|
|
stat = le32_to_cpu(tsqe->word_2);
|
|
|
|
if (stat & SAR_TSQE_INVALID)
|
|
return;
|
|
|
|
do {
|
|
TXPRINTK("tsqe: 0x%p [0x%08x 0x%08x]\n", tsqe,
|
|
le32_to_cpu(tsqe->word_1),
|
|
le32_to_cpu(tsqe->word_2));
|
|
|
|
switch (stat & SAR_TSQE_TYPE) {
|
|
case SAR_TSQE_TYPE_TIMER:
|
|
TXPRINTK("%s: Timer RollOver detected.\n", card->name);
|
|
break;
|
|
|
|
case SAR_TSQE_TYPE_IDLE:
|
|
|
|
conn = le32_to_cpu(tsqe->word_1);
|
|
|
|
if (SAR_TSQE_TAG(stat) == 0x10) {
|
|
#ifdef NOTDEF
|
|
printk("%s: Connection %d halted.\n",
|
|
card->name,
|
|
le32_to_cpu(tsqe->word_1) & 0x1fff);
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
vc = card->vcs[conn & 0x1fff];
|
|
if (!vc) {
|
|
printk("%s: could not find VC from conn %d\n",
|
|
card->name, conn & 0x1fff);
|
|
break;
|
|
}
|
|
|
|
printk("%s: Connection %d IDLE.\n",
|
|
card->name, vc->index);
|
|
|
|
set_bit(VCF_IDLE, &vc->flags);
|
|
break;
|
|
|
|
case SAR_TSQE_TYPE_TSR:
|
|
|
|
conn = le32_to_cpu(tsqe->word_1);
|
|
|
|
vc = card->vcs[conn & 0x1fff];
|
|
if (!vc) {
|
|
printk("%s: no VC at index %d\n",
|
|
card->name,
|
|
le32_to_cpu(tsqe->word_1) & 0x1fff);
|
|
break;
|
|
}
|
|
|
|
drain_scq(card, vc);
|
|
break;
|
|
|
|
case SAR_TSQE_TYPE_TBD_COMP:
|
|
|
|
conn = le32_to_cpu(tsqe->word_1);
|
|
|
|
vpi = (conn >> SAR_TBD_VPI_SHIFT) & 0x00ff;
|
|
vci = (conn >> SAR_TBD_VCI_SHIFT) & 0xffff;
|
|
|
|
if (vpi >= (1 << card->vpibits) ||
|
|
vci >= (1 << card->vcibits)) {
|
|
printk("%s: TBD complete: "
|
|
"out of range VPI.VCI %u.%u\n",
|
|
card->name, vpi, vci);
|
|
break;
|
|
}
|
|
|
|
vc = card->vcs[VPCI2VC(card, vpi, vci)];
|
|
if (!vc) {
|
|
printk("%s: TBD complete: "
|
|
"no VC at VPI.VCI %u.%u\n",
|
|
card->name, vpi, vci);
|
|
break;
|
|
}
|
|
|
|
drain_scq(card, vc);
|
|
break;
|
|
}
|
|
|
|
tsqe->word_2 = cpu_to_le32(SAR_TSQE_INVALID);
|
|
|
|
card->tsq.next = tsqe;
|
|
if (card->tsq.next == card->tsq.last)
|
|
tsqe = card->tsq.base;
|
|
else
|
|
tsqe = card->tsq.next + 1;
|
|
|
|
TXPRINTK("tsqe: %p: base %p, next %p, last %p\n", tsqe,
|
|
card->tsq.base, card->tsq.next, card->tsq.last);
|
|
|
|
stat = le32_to_cpu(tsqe->word_2);
|
|
|
|
} while (!(stat & SAR_TSQE_INVALID));
|
|
|
|
writel((unsigned long)card->tsq.next - (unsigned long)card->tsq.base,
|
|
SAR_REG_TSQH);
|
|
|
|
XPRINTK("idt77252_tx-after writel%d: TSQ head = 0x%x, tail = 0x%x, next = 0x%p.\n",
|
|
card->index, readl(SAR_REG_TSQH),
|
|
readl(SAR_REG_TSQT), card->tsq.next);
|
|
}
|
|
|
|
|
|
static void
|
|
tst_timer(unsigned long data)
|
|
{
|
|
struct idt77252_dev *card = (struct idt77252_dev *)data;
|
|
unsigned long base, idle, jump;
|
|
unsigned long flags;
|
|
u32 pc;
|
|
int e;
|
|
|
|
spin_lock_irqsave(&card->tst_lock, flags);
|
|
|
|
base = card->tst[card->tst_index];
|
|
idle = card->tst[card->tst_index ^ 1];
|
|
|
|
if (test_bit(TST_SWITCH_WAIT, &card->tst_state)) {
|
|
jump = base + card->tst_size - 2;
|
|
|
|
pc = readl(SAR_REG_NOW) >> 2;
|
|
if ((pc ^ idle) & ~(card->tst_size - 1)) {
|
|
mod_timer(&card->tst_timer, jiffies + 1);
|
|
goto out;
|
|
}
|
|
|
|
clear_bit(TST_SWITCH_WAIT, &card->tst_state);
|
|
|
|
card->tst_index ^= 1;
|
|
write_sram(card, jump, TSTE_OPC_JMP | (base << 2));
|
|
|
|
base = card->tst[card->tst_index];
|
|
idle = card->tst[card->tst_index ^ 1];
|
|
|
|
for (e = 0; e < card->tst_size - 2; e++) {
|
|
if (card->soft_tst[e].tste & TSTE_PUSH_IDLE) {
|
|
write_sram(card, idle + e,
|
|
card->soft_tst[e].tste & TSTE_MASK);
|
|
card->soft_tst[e].tste &= ~(TSTE_PUSH_IDLE);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (test_and_clear_bit(TST_SWITCH_PENDING, &card->tst_state)) {
|
|
|
|
for (e = 0; e < card->tst_size - 2; e++) {
|
|
if (card->soft_tst[e].tste & TSTE_PUSH_ACTIVE) {
|
|
write_sram(card, idle + e,
|
|
card->soft_tst[e].tste & TSTE_MASK);
|
|
card->soft_tst[e].tste &= ~(TSTE_PUSH_ACTIVE);
|
|
card->soft_tst[e].tste |= TSTE_PUSH_IDLE;
|
|
}
|
|
}
|
|
|
|
jump = base + card->tst_size - 2;
|
|
|
|
write_sram(card, jump, TSTE_OPC_NULL);
|
|
set_bit(TST_SWITCH_WAIT, &card->tst_state);
|
|
|
|
mod_timer(&card->tst_timer, jiffies + 1);
|
|
}
|
|
|
|
out:
|
|
spin_unlock_irqrestore(&card->tst_lock, flags);
|
|
}
|
|
|
|
static int
|
|
__fill_tst(struct idt77252_dev *card, struct vc_map *vc,
|
|
int n, unsigned int opc)
|
|
{
|
|
unsigned long cl, avail;
|
|
unsigned long idle;
|
|
int e, r;
|
|
u32 data;
|
|
|
|
avail = card->tst_size - 2;
|
|
for (e = 0; e < avail; e++) {
|
|
if (card->soft_tst[e].vc == NULL)
|
|
break;
|
|
}
|
|
if (e >= avail) {
|
|
printk("%s: No free TST entries found\n", card->name);
|
|
return -1;
|
|
}
|
|
|
|
NPRINTK("%s: conn %d: first TST entry at %d.\n",
|
|
card->name, vc ? vc->index : -1, e);
|
|
|
|
r = n;
|
|
cl = avail;
|
|
data = opc & TSTE_OPC_MASK;
|
|
if (vc && (opc != TSTE_OPC_NULL))
|
|
data = opc | vc->index;
|
|
|
|
idle = card->tst[card->tst_index ^ 1];
|
|
|
|
/*
|
|
* Fill Soft TST.
|
|
*/
|
|
while (r > 0) {
|
|
if ((cl >= avail) && (card->soft_tst[e].vc == NULL)) {
|
|
if (vc)
|
|
card->soft_tst[e].vc = vc;
|
|
else
|
|
card->soft_tst[e].vc = (void *)-1;
|
|
|
|
card->soft_tst[e].tste = data;
|
|
if (timer_pending(&card->tst_timer))
|
|
card->soft_tst[e].tste |= TSTE_PUSH_ACTIVE;
|
|
else {
|
|
write_sram(card, idle + e, data);
|
|
card->soft_tst[e].tste |= TSTE_PUSH_IDLE;
|
|
}
|
|
|
|
cl -= card->tst_size;
|
|
r--;
|
|
}
|
|
|
|
if (++e == avail)
|
|
e = 0;
|
|
cl += n;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
fill_tst(struct idt77252_dev *card, struct vc_map *vc, int n, unsigned int opc)
|
|
{
|
|
unsigned long flags;
|
|
int res;
|
|
|
|
spin_lock_irqsave(&card->tst_lock, flags);
|
|
|
|
res = __fill_tst(card, vc, n, opc);
|
|
|
|
set_bit(TST_SWITCH_PENDING, &card->tst_state);
|
|
if (!timer_pending(&card->tst_timer))
|
|
mod_timer(&card->tst_timer, jiffies + 1);
|
|
|
|
spin_unlock_irqrestore(&card->tst_lock, flags);
|
|
return res;
|
|
}
|
|
|
|
static int
|
|
__clear_tst(struct idt77252_dev *card, struct vc_map *vc)
|
|
{
|
|
unsigned long idle;
|
|
int e;
|
|
|
|
idle = card->tst[card->tst_index ^ 1];
|
|
|
|
for (e = 0; e < card->tst_size - 2; e++) {
|
|
if (card->soft_tst[e].vc == vc) {
|
|
card->soft_tst[e].vc = NULL;
|
|
|
|
card->soft_tst[e].tste = TSTE_OPC_VAR;
|
|
if (timer_pending(&card->tst_timer))
|
|
card->soft_tst[e].tste |= TSTE_PUSH_ACTIVE;
|
|
else {
|
|
write_sram(card, idle + e, TSTE_OPC_VAR);
|
|
card->soft_tst[e].tste |= TSTE_PUSH_IDLE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
clear_tst(struct idt77252_dev *card, struct vc_map *vc)
|
|
{
|
|
unsigned long flags;
|
|
int res;
|
|
|
|
spin_lock_irqsave(&card->tst_lock, flags);
|
|
|
|
res = __clear_tst(card, vc);
|
|
|
|
set_bit(TST_SWITCH_PENDING, &card->tst_state);
|
|
if (!timer_pending(&card->tst_timer))
|
|
mod_timer(&card->tst_timer, jiffies + 1);
|
|
|
|
spin_unlock_irqrestore(&card->tst_lock, flags);
|
|
return res;
|
|
}
|
|
|
|
static int
|
|
change_tst(struct idt77252_dev *card, struct vc_map *vc,
|
|
int n, unsigned int opc)
|
|
{
|
|
unsigned long flags;
|
|
int res;
|
|
|
|
spin_lock_irqsave(&card->tst_lock, flags);
|
|
|
|
__clear_tst(card, vc);
|
|
res = __fill_tst(card, vc, n, opc);
|
|
|
|
set_bit(TST_SWITCH_PENDING, &card->tst_state);
|
|
if (!timer_pending(&card->tst_timer))
|
|
mod_timer(&card->tst_timer, jiffies + 1);
|
|
|
|
spin_unlock_irqrestore(&card->tst_lock, flags);
|
|
return res;
|
|
}
|
|
|
|
|
|
static int
|
|
set_tct(struct idt77252_dev *card, struct vc_map *vc)
|
|
{
|
|
unsigned long tct;
|
|
|
|
tct = (unsigned long) (card->tct_base + vc->index * SAR_SRAM_TCT_SIZE);
|
|
|
|
switch (vc->class) {
|
|
case SCHED_CBR:
|
|
OPRINTK("%s: writing TCT at 0x%lx, SCD 0x%lx.\n",
|
|
card->name, tct, vc->scq->scd);
|
|
|
|
write_sram(card, tct + 0, TCT_CBR | vc->scq->scd);
|
|
write_sram(card, tct + 1, 0);
|
|
write_sram(card, tct + 2, 0);
|
|
write_sram(card, tct + 3, 0);
|
|
write_sram(card, tct + 4, 0);
|
|
write_sram(card, tct + 5, 0);
|
|
write_sram(card, tct + 6, 0);
|
|
write_sram(card, tct + 7, 0);
|
|
break;
|
|
|
|
case SCHED_UBR:
|
|
OPRINTK("%s: writing TCT at 0x%lx, SCD 0x%lx.\n",
|
|
card->name, tct, vc->scq->scd);
|
|
|
|
write_sram(card, tct + 0, TCT_UBR | vc->scq->scd);
|
|
write_sram(card, tct + 1, 0);
|
|
write_sram(card, tct + 2, TCT_TSIF);
|
|
write_sram(card, tct + 3, TCT_HALT | TCT_IDLE);
|
|
write_sram(card, tct + 4, 0);
|
|
write_sram(card, tct + 5, vc->init_er);
|
|
write_sram(card, tct + 6, 0);
|
|
write_sram(card, tct + 7, TCT_FLAG_UBR);
|
|
break;
|
|
|
|
case SCHED_VBR:
|
|
case SCHED_ABR:
|
|
default:
|
|
return -ENOSYS;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* FBQ Handling */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
static __inline__ int
|
|
idt77252_fbq_level(struct idt77252_dev *card, int queue)
|
|
{
|
|
return (readl(SAR_REG_STAT) >> (16 + (queue << 2))) & 0x0f;
|
|
}
|
|
|
|
static __inline__ int
|
|
idt77252_fbq_full(struct idt77252_dev *card, int queue)
|
|
{
|
|
return (readl(SAR_REG_STAT) >> (16 + (queue << 2))) == 0x0f;
|
|
}
|
|
|
|
static int
|
|
push_rx_skb(struct idt77252_dev *card, struct sk_buff *skb, int queue)
|
|
{
|
|
unsigned long flags;
|
|
u32 handle;
|
|
u32 addr;
|
|
|
|
skb->data = skb->tail = skb->head;
|
|
skb->len = 0;
|
|
|
|
skb_reserve(skb, 16);
|
|
|
|
switch (queue) {
|
|
case 0:
|
|
skb_put(skb, SAR_FB_SIZE_0);
|
|
break;
|
|
case 1:
|
|
skb_put(skb, SAR_FB_SIZE_1);
|
|
break;
|
|
case 2:
|
|
skb_put(skb, SAR_FB_SIZE_2);
|
|
break;
|
|
case 3:
|
|
skb_put(skb, SAR_FB_SIZE_3);
|
|
break;
|
|
default:
|
|
dev_kfree_skb(skb);
|
|
return -1;
|
|
}
|
|
|
|
if (idt77252_fbq_full(card, queue))
|
|
return -1;
|
|
|
|
memset(&skb->data[(skb->len & ~(0x3f)) - 64], 0, 2 * sizeof(u32));
|
|
|
|
handle = IDT77252_PRV_POOL(skb);
|
|
addr = IDT77252_PRV_PADDR(skb);
|
|
|
|
spin_lock_irqsave(&card->cmd_lock, flags);
|
|
writel(handle, card->fbq[queue]);
|
|
writel(addr, card->fbq[queue]);
|
|
spin_unlock_irqrestore(&card->cmd_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
add_rx_skb(struct idt77252_dev *card, int queue,
|
|
unsigned int size, unsigned int count)
|
|
{
|
|
struct sk_buff *skb;
|
|
dma_addr_t paddr;
|
|
u32 handle;
|
|
|
|
while (count--) {
|
|
skb = dev_alloc_skb(size);
|
|
if (!skb)
|
|
return;
|
|
|
|
if (sb_pool_add(card, skb, queue)) {
|
|
printk("%s: SB POOL full\n", __FUNCTION__);
|
|
goto outfree;
|
|
}
|
|
|
|
paddr = pci_map_single(card->pcidev, skb->data,
|
|
skb->end - skb->data,
|
|
PCI_DMA_FROMDEVICE);
|
|
IDT77252_PRV_PADDR(skb) = paddr;
|
|
|
|
if (push_rx_skb(card, skb, queue)) {
|
|
printk("%s: FB QUEUE full\n", __FUNCTION__);
|
|
goto outunmap;
|
|
}
|
|
}
|
|
|
|
return;
|
|
|
|
outunmap:
|
|
pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
|
|
skb->end - skb->data, PCI_DMA_FROMDEVICE);
|
|
|
|
handle = IDT77252_PRV_POOL(skb);
|
|
card->sbpool[POOL_QUEUE(handle)].skb[POOL_INDEX(handle)] = NULL;
|
|
|
|
outfree:
|
|
dev_kfree_skb(skb);
|
|
}
|
|
|
|
|
|
static void
|
|
recycle_rx_skb(struct idt77252_dev *card, struct sk_buff *skb)
|
|
{
|
|
u32 handle = IDT77252_PRV_POOL(skb);
|
|
int err;
|
|
|
|
pci_dma_sync_single_for_device(card->pcidev, IDT77252_PRV_PADDR(skb),
|
|
skb->end - skb->data, PCI_DMA_FROMDEVICE);
|
|
|
|
err = push_rx_skb(card, skb, POOL_QUEUE(handle));
|
|
if (err) {
|
|
pci_unmap_single(card->pcidev, IDT77252_PRV_PADDR(skb),
|
|
skb->end - skb->data, PCI_DMA_FROMDEVICE);
|
|
sb_pool_remove(card, skb);
|
|
dev_kfree_skb(skb);
|
|
}
|
|
}
|
|
|
|
static void
|
|
flush_rx_pool(struct idt77252_dev *card, struct rx_pool *rpp)
|
|
{
|
|
rpp->len = 0;
|
|
rpp->count = 0;
|
|
rpp->first = NULL;
|
|
rpp->last = &rpp->first;
|
|
}
|
|
|
|
static void
|
|
recycle_rx_pool_skb(struct idt77252_dev *card, struct rx_pool *rpp)
|
|
{
|
|
struct sk_buff *skb, *next;
|
|
int i;
|
|
|
|
skb = rpp->first;
|
|
for (i = 0; i < rpp->count; i++) {
|
|
next = skb->next;
|
|
skb->next = NULL;
|
|
recycle_rx_skb(card, skb);
|
|
skb = next;
|
|
}
|
|
flush_rx_pool(card, rpp);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* ATM Interface */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
static void
|
|
idt77252_phy_put(struct atm_dev *dev, unsigned char value, unsigned long addr)
|
|
{
|
|
write_utility(dev->dev_data, 0x100 + (addr & 0x1ff), value);
|
|
}
|
|
|
|
static unsigned char
|
|
idt77252_phy_get(struct atm_dev *dev, unsigned long addr)
|
|
{
|
|
return read_utility(dev->dev_data, 0x100 + (addr & 0x1ff));
|
|
}
|
|
|
|
static inline int
|
|
idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam)
|
|
{
|
|
struct atm_dev *dev = vcc->dev;
|
|
struct idt77252_dev *card = dev->dev_data;
|
|
struct vc_map *vc = vcc->dev_data;
|
|
int err;
|
|
|
|
if (vc == NULL) {
|
|
printk("%s: NULL connection in send().\n", card->name);
|
|
atomic_inc(&vcc->stats->tx_err);
|
|
dev_kfree_skb(skb);
|
|
return -EINVAL;
|
|
}
|
|
if (!test_bit(VCF_TX, &vc->flags)) {
|
|
printk("%s: Trying to transmit on a non-tx VC.\n", card->name);
|
|
atomic_inc(&vcc->stats->tx_err);
|
|
dev_kfree_skb(skb);
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (vcc->qos.aal) {
|
|
case ATM_AAL0:
|
|
case ATM_AAL1:
|
|
case ATM_AAL5:
|
|
break;
|
|
default:
|
|
printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal);
|
|
atomic_inc(&vcc->stats->tx_err);
|
|
dev_kfree_skb(skb);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (skb_shinfo(skb)->nr_frags != 0) {
|
|
printk("%s: No scatter-gather yet.\n", card->name);
|
|
atomic_inc(&vcc->stats->tx_err);
|
|
dev_kfree_skb(skb);
|
|
return -EINVAL;
|
|
}
|
|
ATM_SKB(skb)->vcc = vcc;
|
|
|
|
err = queue_skb(card, vc, skb, oam);
|
|
if (err) {
|
|
atomic_inc(&vcc->stats->tx_err);
|
|
dev_kfree_skb(skb);
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
idt77252_send(struct atm_vcc *vcc, struct sk_buff *skb)
|
|
{
|
|
return idt77252_send_skb(vcc, skb, 0);
|
|
}
|
|
|
|
static int
|
|
idt77252_send_oam(struct atm_vcc *vcc, void *cell, int flags)
|
|
{
|
|
struct atm_dev *dev = vcc->dev;
|
|
struct idt77252_dev *card = dev->dev_data;
|
|
struct sk_buff *skb;
|
|
|
|
skb = dev_alloc_skb(64);
|
|
if (!skb) {
|
|
printk("%s: Out of memory in send_oam().\n", card->name);
|
|
atomic_inc(&vcc->stats->tx_err);
|
|
return -ENOMEM;
|
|
}
|
|
atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
|
|
|
|
memcpy(skb_put(skb, 52), cell, 52);
|
|
|
|
return idt77252_send_skb(vcc, skb, 1);
|
|
}
|
|
|
|
static __inline__ unsigned int
|
|
idt77252_fls(unsigned int x)
|
|
{
|
|
int r = 1;
|
|
|
|
if (x == 0)
|
|
return 0;
|
|
if (x & 0xffff0000) {
|
|
x >>= 16;
|
|
r += 16;
|
|
}
|
|
if (x & 0xff00) {
|
|
x >>= 8;
|
|
r += 8;
|
|
}
|
|
if (x & 0xf0) {
|
|
x >>= 4;
|
|
r += 4;
|
|
}
|
|
if (x & 0xc) {
|
|
x >>= 2;
|
|
r += 2;
|
|
}
|
|
if (x & 0x2)
|
|
r += 1;
|
|
return r;
|
|
}
|
|
|
|
static u16
|
|
idt77252_int_to_atmfp(unsigned int rate)
|
|
{
|
|
u16 m, e;
|
|
|
|
if (rate == 0)
|
|
return 0;
|
|
e = idt77252_fls(rate) - 1;
|
|
if (e < 9)
|
|
m = (rate - (1 << e)) << (9 - e);
|
|
else if (e == 9)
|
|
m = (rate - (1 << e));
|
|
else /* e > 9 */
|
|
m = (rate - (1 << e)) >> (e - 9);
|
|
return 0x4000 | (e << 9) | m;
|
|
}
|
|
|
|
static u8
|
|
idt77252_rate_logindex(struct idt77252_dev *card, int pcr)
|
|
{
|
|
u16 afp;
|
|
|
|
afp = idt77252_int_to_atmfp(pcr < 0 ? -pcr : pcr);
|
|
if (pcr < 0)
|
|
return rate_to_log[(afp >> 5) & 0x1ff];
|
|
return rate_to_log[((afp >> 5) + 1) & 0x1ff];
|
|
}
|
|
|
|
static void
|
|
idt77252_est_timer(unsigned long data)
|
|
{
|
|
struct vc_map *vc = (struct vc_map *)data;
|
|
struct idt77252_dev *card = vc->card;
|
|
struct rate_estimator *est;
|
|
unsigned long flags;
|
|
u32 rate, cps;
|
|
u64 ncells;
|
|
u8 lacr;
|
|
|
|
spin_lock_irqsave(&vc->lock, flags);
|
|
est = vc->estimator;
|
|
if (!est)
|
|
goto out;
|
|
|
|
ncells = est->cells;
|
|
|
|
rate = ((u32)(ncells - est->last_cells)) << (7 - est->interval);
|
|
est->last_cells = ncells;
|
|
est->avcps += ((long)rate - (long)est->avcps) >> est->ewma_log;
|
|
est->cps = (est->avcps + 0x1f) >> 5;
|
|
|
|
cps = est->cps;
|
|
if (cps < (est->maxcps >> 4))
|
|
cps = est->maxcps >> 4;
|
|
|
|
lacr = idt77252_rate_logindex(card, cps);
|
|
if (lacr > vc->max_er)
|
|
lacr = vc->max_er;
|
|
|
|
if (lacr != vc->lacr) {
|
|
vc->lacr = lacr;
|
|
writel(TCMDQ_LACR|(vc->lacr << 16)|vc->index, SAR_REG_TCMDQ);
|
|
}
|
|
|
|
est->timer.expires = jiffies + ((HZ / 4) << est->interval);
|
|
add_timer(&est->timer);
|
|
|
|
out:
|
|
spin_unlock_irqrestore(&vc->lock, flags);
|
|
}
|
|
|
|
static struct rate_estimator *
|
|
idt77252_init_est(struct vc_map *vc, int pcr)
|
|
{
|
|
struct rate_estimator *est;
|
|
|
|
est = kzalloc(sizeof(struct rate_estimator), GFP_KERNEL);
|
|
if (!est)
|
|
return NULL;
|
|
est->maxcps = pcr < 0 ? -pcr : pcr;
|
|
est->cps = est->maxcps;
|
|
est->avcps = est->cps << 5;
|
|
|
|
est->interval = 2; /* XXX: make this configurable */
|
|
est->ewma_log = 2; /* XXX: make this configurable */
|
|
init_timer(&est->timer);
|
|
est->timer.data = (unsigned long)vc;
|
|
est->timer.function = idt77252_est_timer;
|
|
|
|
est->timer.expires = jiffies + ((HZ / 4) << est->interval);
|
|
add_timer(&est->timer);
|
|
|
|
return est;
|
|
}
|
|
|
|
static int
|
|
idt77252_init_cbr(struct idt77252_dev *card, struct vc_map *vc,
|
|
struct atm_vcc *vcc, struct atm_qos *qos)
|
|
{
|
|
int tst_free, tst_used, tst_entries;
|
|
unsigned long tmpl, modl;
|
|
int tcr, tcra;
|
|
|
|
if ((qos->txtp.max_pcr == 0) &&
|
|
(qos->txtp.pcr == 0) && (qos->txtp.min_pcr == 0)) {
|
|
printk("%s: trying to open a CBR VC with cell rate = 0\n",
|
|
card->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
tst_used = 0;
|
|
tst_free = card->tst_free;
|
|
if (test_bit(VCF_TX, &vc->flags))
|
|
tst_used = vc->ntste;
|
|
tst_free += tst_used;
|
|
|
|
tcr = atm_pcr_goal(&qos->txtp);
|
|
tcra = tcr >= 0 ? tcr : -tcr;
|
|
|
|
TXPRINTK("%s: CBR target cell rate = %d\n", card->name, tcra);
|
|
|
|
tmpl = (unsigned long) tcra * ((unsigned long) card->tst_size - 2);
|
|
modl = tmpl % (unsigned long)card->utopia_pcr;
|
|
|
|
tst_entries = (int) (tmpl / card->utopia_pcr);
|
|
if (tcr > 0) {
|
|
if (modl > 0)
|
|
tst_entries++;
|
|
} else if (tcr == 0) {
|
|
tst_entries = tst_free - SAR_TST_RESERVED;
|
|
if (tst_entries <= 0) {
|
|
printk("%s: no CBR bandwidth free.\n", card->name);
|
|
return -ENOSR;
|
|
}
|
|
}
|
|
|
|
if (tst_entries == 0) {
|
|
printk("%s: selected CBR bandwidth < granularity.\n",
|
|
card->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (tst_entries > (tst_free - SAR_TST_RESERVED)) {
|
|
printk("%s: not enough CBR bandwidth free.\n", card->name);
|
|
return -ENOSR;
|
|
}
|
|
|
|
vc->ntste = tst_entries;
|
|
|
|
card->tst_free = tst_free - tst_entries;
|
|
if (test_bit(VCF_TX, &vc->flags)) {
|
|
if (tst_used == tst_entries)
|
|
return 0;
|
|
|
|
OPRINTK("%s: modify %d -> %d entries in TST.\n",
|
|
card->name, tst_used, tst_entries);
|
|
change_tst(card, vc, tst_entries, TSTE_OPC_CBR);
|
|
return 0;
|
|
}
|
|
|
|
OPRINTK("%s: setting %d entries in TST.\n", card->name, tst_entries);
|
|
fill_tst(card, vc, tst_entries, TSTE_OPC_CBR);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
idt77252_init_ubr(struct idt77252_dev *card, struct vc_map *vc,
|
|
struct atm_vcc *vcc, struct atm_qos *qos)
|
|
{
|
|
unsigned long flags;
|
|
int tcr;
|
|
|
|
spin_lock_irqsave(&vc->lock, flags);
|
|
if (vc->estimator) {
|
|
del_timer(&vc->estimator->timer);
|
|
kfree(vc->estimator);
|
|
vc->estimator = NULL;
|
|
}
|
|
spin_unlock_irqrestore(&vc->lock, flags);
|
|
|
|
tcr = atm_pcr_goal(&qos->txtp);
|
|
if (tcr == 0)
|
|
tcr = card->link_pcr;
|
|
|
|
vc->estimator = idt77252_init_est(vc, tcr);
|
|
|
|
vc->class = SCHED_UBR;
|
|
vc->init_er = idt77252_rate_logindex(card, tcr);
|
|
vc->lacr = vc->init_er;
|
|
if (tcr < 0)
|
|
vc->max_er = vc->init_er;
|
|
else
|
|
vc->max_er = 0xff;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
idt77252_init_tx(struct idt77252_dev *card, struct vc_map *vc,
|
|
struct atm_vcc *vcc, struct atm_qos *qos)
|
|
{
|
|
int error;
|
|
|
|
if (test_bit(VCF_TX, &vc->flags))
|
|
return -EBUSY;
|
|
|
|
switch (qos->txtp.traffic_class) {
|
|
case ATM_CBR:
|
|
vc->class = SCHED_CBR;
|
|
break;
|
|
|
|
case ATM_UBR:
|
|
vc->class = SCHED_UBR;
|
|
break;
|
|
|
|
case ATM_VBR:
|
|
case ATM_ABR:
|
|
default:
|
|
return -EPROTONOSUPPORT;
|
|
}
|
|
|
|
vc->scq = alloc_scq(card, vc->class);
|
|
if (!vc->scq) {
|
|
printk("%s: can't get SCQ.\n", card->name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
vc->scq->scd = get_free_scd(card, vc);
|
|
if (vc->scq->scd == 0) {
|
|
printk("%s: no SCD available.\n", card->name);
|
|
free_scq(card, vc->scq);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
fill_scd(card, vc->scq, vc->class);
|
|
|
|
if (set_tct(card, vc)) {
|
|
printk("%s: class %d not supported.\n",
|
|
card->name, qos->txtp.traffic_class);
|
|
|
|
card->scd2vc[vc->scd_index] = NULL;
|
|
free_scq(card, vc->scq);
|
|
return -EPROTONOSUPPORT;
|
|
}
|
|
|
|
switch (vc->class) {
|
|
case SCHED_CBR:
|
|
error = idt77252_init_cbr(card, vc, vcc, qos);
|
|
if (error) {
|
|
card->scd2vc[vc->scd_index] = NULL;
|
|
free_scq(card, vc->scq);
|
|
return error;
|
|
}
|
|
|
|
clear_bit(VCF_IDLE, &vc->flags);
|
|
writel(TCMDQ_START | vc->index, SAR_REG_TCMDQ);
|
|
break;
|
|
|
|
case SCHED_UBR:
|
|
error = idt77252_init_ubr(card, vc, vcc, qos);
|
|
if (error) {
|
|
card->scd2vc[vc->scd_index] = NULL;
|
|
free_scq(card, vc->scq);
|
|
return error;
|
|
}
|
|
|
|
set_bit(VCF_IDLE, &vc->flags);
|
|
break;
|
|
}
|
|
|
|
vc->tx_vcc = vcc;
|
|
set_bit(VCF_TX, &vc->flags);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
idt77252_init_rx(struct idt77252_dev *card, struct vc_map *vc,
|
|
struct atm_vcc *vcc, struct atm_qos *qos)
|
|
{
|
|
unsigned long flags;
|
|
unsigned long addr;
|
|
u32 rcte = 0;
|
|
|
|
if (test_bit(VCF_RX, &vc->flags))
|
|
return -EBUSY;
|
|
|
|
vc->rx_vcc = vcc;
|
|
set_bit(VCF_RX, &vc->flags);
|
|
|
|
if ((vcc->vci == 3) || (vcc->vci == 4))
|
|
return 0;
|
|
|
|
flush_rx_pool(card, &vc->rcv.rx_pool);
|
|
|
|
rcte |= SAR_RCTE_CONNECTOPEN;
|
|
rcte |= SAR_RCTE_RAWCELLINTEN;
|
|
|
|
switch (qos->aal) {
|
|
case ATM_AAL0:
|
|
rcte |= SAR_RCTE_RCQ;
|
|
break;
|
|
case ATM_AAL1:
|
|
rcte |= SAR_RCTE_OAM; /* Let SAR drop Video */
|
|
break;
|
|
case ATM_AAL34:
|
|
rcte |= SAR_RCTE_AAL34;
|
|
break;
|
|
case ATM_AAL5:
|
|
rcte |= SAR_RCTE_AAL5;
|
|
break;
|
|
default:
|
|
rcte |= SAR_RCTE_RCQ;
|
|
break;
|
|
}
|
|
|
|
if (qos->aal != ATM_AAL5)
|
|
rcte |= SAR_RCTE_FBP_1;
|
|
else if (qos->rxtp.max_sdu > SAR_FB_SIZE_2)
|
|
rcte |= SAR_RCTE_FBP_3;
|
|
else if (qos->rxtp.max_sdu > SAR_FB_SIZE_1)
|
|
rcte |= SAR_RCTE_FBP_2;
|
|
else if (qos->rxtp.max_sdu > SAR_FB_SIZE_0)
|
|
rcte |= SAR_RCTE_FBP_1;
|
|
else
|
|
rcte |= SAR_RCTE_FBP_01;
|
|
|
|
addr = card->rct_base + (vc->index << 2);
|
|
|
|
OPRINTK("%s: writing RCT at 0x%lx\n", card->name, addr);
|
|
write_sram(card, addr, rcte);
|
|
|
|
spin_lock_irqsave(&card->cmd_lock, flags);
|
|
writel(SAR_CMD_OPEN_CONNECTION | (addr << 2), SAR_REG_CMD);
|
|
waitfor_idle(card);
|
|
spin_unlock_irqrestore(&card->cmd_lock, flags);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
idt77252_open(struct atm_vcc *vcc)
|
|
{
|
|
struct atm_dev *dev = vcc->dev;
|
|
struct idt77252_dev *card = dev->dev_data;
|
|
struct vc_map *vc;
|
|
unsigned int index;
|
|
unsigned int inuse;
|
|
int error;
|
|
int vci = vcc->vci;
|
|
short vpi = vcc->vpi;
|
|
|
|
if (vpi == ATM_VPI_UNSPEC || vci == ATM_VCI_UNSPEC)
|
|
return 0;
|
|
|
|
if (vpi >= (1 << card->vpibits)) {
|
|
printk("%s: unsupported VPI: %d\n", card->name, vpi);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (vci >= (1 << card->vcibits)) {
|
|
printk("%s: unsupported VCI: %d\n", card->name, vci);
|
|
return -EINVAL;
|
|
}
|
|
|
|
set_bit(ATM_VF_ADDR, &vcc->flags);
|
|
|
|
down(&card->mutex);
|
|
|
|
OPRINTK("%s: opening vpi.vci: %d.%d\n", card->name, vpi, vci);
|
|
|
|
switch (vcc->qos.aal) {
|
|
case ATM_AAL0:
|
|
case ATM_AAL1:
|
|
case ATM_AAL5:
|
|
break;
|
|
default:
|
|
printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal);
|
|
up(&card->mutex);
|
|
return -EPROTONOSUPPORT;
|
|
}
|
|
|
|
index = VPCI2VC(card, vpi, vci);
|
|
if (!card->vcs[index]) {
|
|
card->vcs[index] = kzalloc(sizeof(struct vc_map), GFP_KERNEL);
|
|
if (!card->vcs[index]) {
|
|
printk("%s: can't alloc vc in open()\n", card->name);
|
|
up(&card->mutex);
|
|
return -ENOMEM;
|
|
}
|
|
card->vcs[index]->card = card;
|
|
card->vcs[index]->index = index;
|
|
|
|
spin_lock_init(&card->vcs[index]->lock);
|
|
}
|
|
vc = card->vcs[index];
|
|
|
|
vcc->dev_data = vc;
|
|
|
|
IPRINTK("%s: idt77252_open: vc = %d (%d.%d) %s/%s (max RX SDU: %u)\n",
|
|
card->name, vc->index, vcc->vpi, vcc->vci,
|
|
vcc->qos.rxtp.traffic_class != ATM_NONE ? "rx" : "--",
|
|
vcc->qos.txtp.traffic_class != ATM_NONE ? "tx" : "--",
|
|
vcc->qos.rxtp.max_sdu);
|
|
|
|
inuse = 0;
|
|
if (vcc->qos.txtp.traffic_class != ATM_NONE &&
|
|
test_bit(VCF_TX, &vc->flags))
|
|
inuse = 1;
|
|
if (vcc->qos.rxtp.traffic_class != ATM_NONE &&
|
|
test_bit(VCF_RX, &vc->flags))
|
|
inuse += 2;
|
|
|
|
if (inuse) {
|
|
printk("%s: %s vci already in use.\n", card->name,
|
|
inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx");
|
|
up(&card->mutex);
|
|
return -EADDRINUSE;
|
|
}
|
|
|
|
if (vcc->qos.txtp.traffic_class != ATM_NONE) {
|
|
error = idt77252_init_tx(card, vc, vcc, &vcc->qos);
|
|
if (error) {
|
|
up(&card->mutex);
|
|
return error;
|
|
}
|
|
}
|
|
|
|
if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
|
|
error = idt77252_init_rx(card, vc, vcc, &vcc->qos);
|
|
if (error) {
|
|
up(&card->mutex);
|
|
return error;
|
|
}
|
|
}
|
|
|
|
set_bit(ATM_VF_READY, &vcc->flags);
|
|
|
|
up(&card->mutex);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
idt77252_close(struct atm_vcc *vcc)
|
|
{
|
|
struct atm_dev *dev = vcc->dev;
|
|
struct idt77252_dev *card = dev->dev_data;
|
|
struct vc_map *vc = vcc->dev_data;
|
|
unsigned long flags;
|
|
unsigned long addr;
|
|
unsigned long timeout;
|
|
|
|
down(&card->mutex);
|
|
|
|
IPRINTK("%s: idt77252_close: vc = %d (%d.%d)\n",
|
|
card->name, vc->index, vcc->vpi, vcc->vci);
|
|
|
|
clear_bit(ATM_VF_READY, &vcc->flags);
|
|
|
|
if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
|
|
|
|
spin_lock_irqsave(&vc->lock, flags);
|
|
clear_bit(VCF_RX, &vc->flags);
|
|
vc->rx_vcc = NULL;
|
|
spin_unlock_irqrestore(&vc->lock, flags);
|
|
|
|
if ((vcc->vci == 3) || (vcc->vci == 4))
|
|
goto done;
|
|
|
|
addr = card->rct_base + vc->index * SAR_SRAM_RCT_SIZE;
|
|
|
|
spin_lock_irqsave(&card->cmd_lock, flags);
|
|
writel(SAR_CMD_CLOSE_CONNECTION | (addr << 2), SAR_REG_CMD);
|
|
waitfor_idle(card);
|
|
spin_unlock_irqrestore(&card->cmd_lock, flags);
|
|
|
|
if (vc->rcv.rx_pool.count) {
|
|
DPRINTK("%s: closing a VC with pending rx buffers.\n",
|
|
card->name);
|
|
|
|
recycle_rx_pool_skb(card, &vc->rcv.rx_pool);
|
|
}
|
|
}
|
|
|
|
done:
|
|
if (vcc->qos.txtp.traffic_class != ATM_NONE) {
|
|
|
|
spin_lock_irqsave(&vc->lock, flags);
|
|
clear_bit(VCF_TX, &vc->flags);
|
|
clear_bit(VCF_IDLE, &vc->flags);
|
|
clear_bit(VCF_RSV, &vc->flags);
|
|
vc->tx_vcc = NULL;
|
|
|
|
if (vc->estimator) {
|
|
del_timer(&vc->estimator->timer);
|
|
kfree(vc->estimator);
|
|
vc->estimator = NULL;
|
|
}
|
|
spin_unlock_irqrestore(&vc->lock, flags);
|
|
|
|
timeout = 5 * 1000;
|
|
while (atomic_read(&vc->scq->used) > 0) {
|
|
timeout = msleep_interruptible(timeout);
|
|
if (!timeout)
|
|
break;
|
|
}
|
|
if (!timeout)
|
|
printk("%s: SCQ drain timeout: %u used\n",
|
|
card->name, atomic_read(&vc->scq->used));
|
|
|
|
writel(TCMDQ_HALT | vc->index, SAR_REG_TCMDQ);
|
|
clear_scd(card, vc->scq, vc->class);
|
|
|
|
if (vc->class == SCHED_CBR) {
|
|
clear_tst(card, vc);
|
|
card->tst_free += vc->ntste;
|
|
vc->ntste = 0;
|
|
}
|
|
|
|
card->scd2vc[vc->scd_index] = NULL;
|
|
free_scq(card, vc->scq);
|
|
}
|
|
|
|
up(&card->mutex);
|
|
}
|
|
|
|
static int
|
|
idt77252_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags)
|
|
{
|
|
struct atm_dev *dev = vcc->dev;
|
|
struct idt77252_dev *card = dev->dev_data;
|
|
struct vc_map *vc = vcc->dev_data;
|
|
int error = 0;
|
|
|
|
down(&card->mutex);
|
|
|
|
if (qos->txtp.traffic_class != ATM_NONE) {
|
|
if (!test_bit(VCF_TX, &vc->flags)) {
|
|
error = idt77252_init_tx(card, vc, vcc, qos);
|
|
if (error)
|
|
goto out;
|
|
} else {
|
|
switch (qos->txtp.traffic_class) {
|
|
case ATM_CBR:
|
|
error = idt77252_init_cbr(card, vc, vcc, qos);
|
|
if (error)
|
|
goto out;
|
|
break;
|
|
|
|
case ATM_UBR:
|
|
error = idt77252_init_ubr(card, vc, vcc, qos);
|
|
if (error)
|
|
goto out;
|
|
|
|
if (!test_bit(VCF_IDLE, &vc->flags)) {
|
|
writel(TCMDQ_LACR | (vc->lacr << 16) |
|
|
vc->index, SAR_REG_TCMDQ);
|
|
}
|
|
break;
|
|
|
|
case ATM_VBR:
|
|
case ATM_ABR:
|
|
error = -EOPNOTSUPP;
|
|
goto out;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((qos->rxtp.traffic_class != ATM_NONE) &&
|
|
!test_bit(VCF_RX, &vc->flags)) {
|
|
error = idt77252_init_rx(card, vc, vcc, qos);
|
|
if (error)
|
|
goto out;
|
|
}
|
|
|
|
memcpy(&vcc->qos, qos, sizeof(struct atm_qos));
|
|
|
|
set_bit(ATM_VF_HASQOS, &vcc->flags);
|
|
|
|
out:
|
|
up(&card->mutex);
|
|
return error;
|
|
}
|
|
|
|
static int
|
|
idt77252_proc_read(struct atm_dev *dev, loff_t * pos, char *page)
|
|
{
|
|
struct idt77252_dev *card = dev->dev_data;
|
|
int i, left;
|
|
|
|
left = (int) *pos;
|
|
if (!left--)
|
|
return sprintf(page, "IDT77252 Interrupts:\n");
|
|
if (!left--)
|
|
return sprintf(page, "TSIF: %lu\n", card->irqstat[15]);
|
|
if (!left--)
|
|
return sprintf(page, "TXICP: %lu\n", card->irqstat[14]);
|
|
if (!left--)
|
|
return sprintf(page, "TSQF: %lu\n", card->irqstat[12]);
|
|
if (!left--)
|
|
return sprintf(page, "TMROF: %lu\n", card->irqstat[11]);
|
|
if (!left--)
|
|
return sprintf(page, "PHYI: %lu\n", card->irqstat[10]);
|
|
if (!left--)
|
|
return sprintf(page, "FBQ3A: %lu\n", card->irqstat[8]);
|
|
if (!left--)
|
|
return sprintf(page, "FBQ2A: %lu\n", card->irqstat[7]);
|
|
if (!left--)
|
|
return sprintf(page, "RSQF: %lu\n", card->irqstat[6]);
|
|
if (!left--)
|
|
return sprintf(page, "EPDU: %lu\n", card->irqstat[5]);
|
|
if (!left--)
|
|
return sprintf(page, "RAWCF: %lu\n", card->irqstat[4]);
|
|
if (!left--)
|
|
return sprintf(page, "FBQ1A: %lu\n", card->irqstat[3]);
|
|
if (!left--)
|
|
return sprintf(page, "FBQ0A: %lu\n", card->irqstat[2]);
|
|
if (!left--)
|
|
return sprintf(page, "RSQAF: %lu\n", card->irqstat[1]);
|
|
if (!left--)
|
|
return sprintf(page, "IDT77252 Transmit Connection Table:\n");
|
|
|
|
for (i = 0; i < card->tct_size; i++) {
|
|
unsigned long tct;
|
|
struct atm_vcc *vcc;
|
|
struct vc_map *vc;
|
|
char *p;
|
|
|
|
vc = card->vcs[i];
|
|
if (!vc)
|
|
continue;
|
|
|
|
vcc = NULL;
|
|
if (vc->tx_vcc)
|
|
vcc = vc->tx_vcc;
|
|
if (!vcc)
|
|
continue;
|
|
if (left--)
|
|
continue;
|
|
|
|
p = page;
|
|
p += sprintf(p, " %4u: %u.%u: ", i, vcc->vpi, vcc->vci);
|
|
tct = (unsigned long) (card->tct_base + i * SAR_SRAM_TCT_SIZE);
|
|
|
|
for (i = 0; i < 8; i++)
|
|
p += sprintf(p, " %08x", read_sram(card, tct + i));
|
|
p += sprintf(p, "\n");
|
|
return p - page;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* Interrupt handler */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
static void
|
|
idt77252_collect_stat(struct idt77252_dev *card)
|
|
{
|
|
u32 cdc, vpec, icc;
|
|
|
|
cdc = readl(SAR_REG_CDC);
|
|
vpec = readl(SAR_REG_VPEC);
|
|
icc = readl(SAR_REG_ICC);
|
|
|
|
#ifdef NOTDEF
|
|
printk("%s:", card->name);
|
|
|
|
if (cdc & 0x7f0000) {
|
|
char *s = "";
|
|
|
|
printk(" [");
|
|
if (cdc & (1 << 22)) {
|
|
printk("%sRM ID", s);
|
|
s = " | ";
|
|
}
|
|
if (cdc & (1 << 21)) {
|
|
printk("%sCON TAB", s);
|
|
s = " | ";
|
|
}
|
|
if (cdc & (1 << 20)) {
|
|
printk("%sNO FB", s);
|
|
s = " | ";
|
|
}
|
|
if (cdc & (1 << 19)) {
|
|
printk("%sOAM CRC", s);
|
|
s = " | ";
|
|
}
|
|
if (cdc & (1 << 18)) {
|
|
printk("%sRM CRC", s);
|
|
s = " | ";
|
|
}
|
|
if (cdc & (1 << 17)) {
|
|
printk("%sRM FIFO", s);
|
|
s = " | ";
|
|
}
|
|
if (cdc & (1 << 16)) {
|
|
printk("%sRX FIFO", s);
|
|
s = " | ";
|
|
}
|
|
printk("]");
|
|
}
|
|
|
|
printk(" CDC %04x, VPEC %04x, ICC: %04x\n",
|
|
cdc & 0xffff, vpec & 0xffff, icc & 0xffff);
|
|
#endif
|
|
}
|
|
|
|
static irqreturn_t
|
|
idt77252_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct idt77252_dev *card = dev_id;
|
|
u32 stat;
|
|
|
|
stat = readl(SAR_REG_STAT) & 0xffff;
|
|
if (!stat) /* no interrupt for us */
|
|
return IRQ_NONE;
|
|
|
|
if (test_and_set_bit(IDT77252_BIT_INTERRUPT, &card->flags)) {
|
|
printk("%s: Re-entering irq_handler()\n", card->name);
|
|
goto out;
|
|
}
|
|
|
|
writel(stat, SAR_REG_STAT); /* reset interrupt */
|
|
|
|
if (stat & SAR_STAT_TSIF) { /* entry written to TSQ */
|
|
INTPRINTK("%s: TSIF\n", card->name);
|
|
card->irqstat[15]++;
|
|
idt77252_tx(card);
|
|
}
|
|
if (stat & SAR_STAT_TXICP) { /* Incomplete CS-PDU has */
|
|
INTPRINTK("%s: TXICP\n", card->name);
|
|
card->irqstat[14]++;
|
|
#ifdef CONFIG_ATM_IDT77252_DEBUG
|
|
idt77252_tx_dump(card);
|
|
#endif
|
|
}
|
|
if (stat & SAR_STAT_TSQF) { /* TSQ 7/8 full */
|
|
INTPRINTK("%s: TSQF\n", card->name);
|
|
card->irqstat[12]++;
|
|
idt77252_tx(card);
|
|
}
|
|
if (stat & SAR_STAT_TMROF) { /* Timer overflow */
|
|
INTPRINTK("%s: TMROF\n", card->name);
|
|
card->irqstat[11]++;
|
|
idt77252_collect_stat(card);
|
|
}
|
|
|
|
if (stat & SAR_STAT_EPDU) { /* Got complete CS-PDU */
|
|
INTPRINTK("%s: EPDU\n", card->name);
|
|
card->irqstat[5]++;
|
|
idt77252_rx(card);
|
|
}
|
|
if (stat & SAR_STAT_RSQAF) { /* RSQ is 7/8 full */
|
|
INTPRINTK("%s: RSQAF\n", card->name);
|
|
card->irqstat[1]++;
|
|
idt77252_rx(card);
|
|
}
|
|
if (stat & SAR_STAT_RSQF) { /* RSQ is full */
|
|
INTPRINTK("%s: RSQF\n", card->name);
|
|
card->irqstat[6]++;
|
|
idt77252_rx(card);
|
|
}
|
|
if (stat & SAR_STAT_RAWCF) { /* Raw cell received */
|
|
INTPRINTK("%s: RAWCF\n", card->name);
|
|
card->irqstat[4]++;
|
|
idt77252_rx_raw(card);
|
|
}
|
|
|
|
if (stat & SAR_STAT_PHYI) { /* PHY device interrupt */
|
|
INTPRINTK("%s: PHYI", card->name);
|
|
card->irqstat[10]++;
|
|
if (card->atmdev->phy && card->atmdev->phy->interrupt)
|
|
card->atmdev->phy->interrupt(card->atmdev);
|
|
}
|
|
|
|
if (stat & (SAR_STAT_FBQ0A | SAR_STAT_FBQ1A |
|
|
SAR_STAT_FBQ2A | SAR_STAT_FBQ3A)) {
|
|
|
|
writel(readl(SAR_REG_CFG) & ~(SAR_CFG_FBIE), SAR_REG_CFG);
|
|
|
|
INTPRINTK("%s: FBQA: %04x\n", card->name, stat);
|
|
|
|
if (stat & SAR_STAT_FBQ0A)
|
|
card->irqstat[2]++;
|
|
if (stat & SAR_STAT_FBQ1A)
|
|
card->irqstat[3]++;
|
|
if (stat & SAR_STAT_FBQ2A)
|
|
card->irqstat[7]++;
|
|
if (stat & SAR_STAT_FBQ3A)
|
|
card->irqstat[8]++;
|
|
|
|
schedule_work(&card->tqueue);
|
|
}
|
|
|
|
out:
|
|
clear_bit(IDT77252_BIT_INTERRUPT, &card->flags);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void
|
|
idt77252_softint(struct work_struct *work)
|
|
{
|
|
struct idt77252_dev *card =
|
|
container_of(work, struct idt77252_dev, tqueue);
|
|
u32 stat;
|
|
int done;
|
|
|
|
for (done = 1; ; done = 1) {
|
|
stat = readl(SAR_REG_STAT) >> 16;
|
|
|
|
if ((stat & 0x0f) < SAR_FBQ0_HIGH) {
|
|
add_rx_skb(card, 0, SAR_FB_SIZE_0, 32);
|
|
done = 0;
|
|
}
|
|
|
|
stat >>= 4;
|
|
if ((stat & 0x0f) < SAR_FBQ1_HIGH) {
|
|
add_rx_skb(card, 1, SAR_FB_SIZE_1, 32);
|
|
done = 0;
|
|
}
|
|
|
|
stat >>= 4;
|
|
if ((stat & 0x0f) < SAR_FBQ2_HIGH) {
|
|
add_rx_skb(card, 2, SAR_FB_SIZE_2, 32);
|
|
done = 0;
|
|
}
|
|
|
|
stat >>= 4;
|
|
if ((stat & 0x0f) < SAR_FBQ3_HIGH) {
|
|
add_rx_skb(card, 3, SAR_FB_SIZE_3, 32);
|
|
done = 0;
|
|
}
|
|
|
|
if (done)
|
|
break;
|
|
}
|
|
|
|
writel(readl(SAR_REG_CFG) | SAR_CFG_FBIE, SAR_REG_CFG);
|
|
}
|
|
|
|
|
|
static int
|
|
open_card_oam(struct idt77252_dev *card)
|
|
{
|
|
unsigned long flags;
|
|
unsigned long addr;
|
|
struct vc_map *vc;
|
|
int vpi, vci;
|
|
int index;
|
|
u32 rcte;
|
|
|
|
for (vpi = 0; vpi < (1 << card->vpibits); vpi++) {
|
|
for (vci = 3; vci < 5; vci++) {
|
|
index = VPCI2VC(card, vpi, vci);
|
|
|
|
vc = kzalloc(sizeof(struct vc_map), GFP_KERNEL);
|
|
if (!vc) {
|
|
printk("%s: can't alloc vc\n", card->name);
|
|
return -ENOMEM;
|
|
}
|
|
vc->index = index;
|
|
card->vcs[index] = vc;
|
|
|
|
flush_rx_pool(card, &vc->rcv.rx_pool);
|
|
|
|
rcte = SAR_RCTE_CONNECTOPEN |
|
|
SAR_RCTE_RAWCELLINTEN |
|
|
SAR_RCTE_RCQ |
|
|
SAR_RCTE_FBP_1;
|
|
|
|
addr = card->rct_base + (vc->index << 2);
|
|
write_sram(card, addr, rcte);
|
|
|
|
spin_lock_irqsave(&card->cmd_lock, flags);
|
|
writel(SAR_CMD_OPEN_CONNECTION | (addr << 2),
|
|
SAR_REG_CMD);
|
|
waitfor_idle(card);
|
|
spin_unlock_irqrestore(&card->cmd_lock, flags);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
close_card_oam(struct idt77252_dev *card)
|
|
{
|
|
unsigned long flags;
|
|
unsigned long addr;
|
|
struct vc_map *vc;
|
|
int vpi, vci;
|
|
int index;
|
|
|
|
for (vpi = 0; vpi < (1 << card->vpibits); vpi++) {
|
|
for (vci = 3; vci < 5; vci++) {
|
|
index = VPCI2VC(card, vpi, vci);
|
|
vc = card->vcs[index];
|
|
|
|
addr = card->rct_base + vc->index * SAR_SRAM_RCT_SIZE;
|
|
|
|
spin_lock_irqsave(&card->cmd_lock, flags);
|
|
writel(SAR_CMD_CLOSE_CONNECTION | (addr << 2),
|
|
SAR_REG_CMD);
|
|
waitfor_idle(card);
|
|
spin_unlock_irqrestore(&card->cmd_lock, flags);
|
|
|
|
if (vc->rcv.rx_pool.count) {
|
|
DPRINTK("%s: closing a VC "
|
|
"with pending rx buffers.\n",
|
|
card->name);
|
|
|
|
recycle_rx_pool_skb(card, &vc->rcv.rx_pool);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
open_card_ubr0(struct idt77252_dev *card)
|
|
{
|
|
struct vc_map *vc;
|
|
|
|
vc = kzalloc(sizeof(struct vc_map), GFP_KERNEL);
|
|
if (!vc) {
|
|
printk("%s: can't alloc vc\n", card->name);
|
|
return -ENOMEM;
|
|
}
|
|
card->vcs[0] = vc;
|
|
vc->class = SCHED_UBR0;
|
|
|
|
vc->scq = alloc_scq(card, vc->class);
|
|
if (!vc->scq) {
|
|
printk("%s: can't get SCQ.\n", card->name);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
card->scd2vc[0] = vc;
|
|
vc->scd_index = 0;
|
|
vc->scq->scd = card->scd_base;
|
|
|
|
fill_scd(card, vc->scq, vc->class);
|
|
|
|
write_sram(card, card->tct_base + 0, TCT_UBR | card->scd_base);
|
|
write_sram(card, card->tct_base + 1, 0);
|
|
write_sram(card, card->tct_base + 2, 0);
|
|
write_sram(card, card->tct_base + 3, 0);
|
|
write_sram(card, card->tct_base + 4, 0);
|
|
write_sram(card, card->tct_base + 5, 0);
|
|
write_sram(card, card->tct_base + 6, 0);
|
|
write_sram(card, card->tct_base + 7, TCT_FLAG_UBR);
|
|
|
|
clear_bit(VCF_IDLE, &vc->flags);
|
|
writel(TCMDQ_START | 0, SAR_REG_TCMDQ);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
idt77252_dev_open(struct idt77252_dev *card)
|
|
{
|
|
u32 conf;
|
|
|
|
if (!test_bit(IDT77252_BIT_INIT, &card->flags)) {
|
|
printk("%s: SAR not yet initialized.\n", card->name);
|
|
return -1;
|
|
}
|
|
|
|
conf = SAR_CFG_RXPTH| /* enable receive path */
|
|
SAR_RX_DELAY | /* interrupt on complete PDU */
|
|
SAR_CFG_RAWIE | /* interrupt enable on raw cells */
|
|
SAR_CFG_RQFIE | /* interrupt on RSQ almost full */
|
|
SAR_CFG_TMOIE | /* interrupt on timer overflow */
|
|
SAR_CFG_FBIE | /* interrupt on low free buffers */
|
|
SAR_CFG_TXEN | /* transmit operation enable */
|
|
SAR_CFG_TXINT | /* interrupt on transmit status */
|
|
SAR_CFG_TXUIE | /* interrupt on transmit underrun */
|
|
SAR_CFG_TXSFI | /* interrupt on TSQ almost full */
|
|
SAR_CFG_PHYIE /* enable PHY interrupts */
|
|
;
|
|
|
|
#ifdef CONFIG_ATM_IDT77252_RCV_ALL
|
|
/* Test RAW cell receive. */
|
|
conf |= SAR_CFG_VPECA;
|
|
#endif
|
|
|
|
writel(readl(SAR_REG_CFG) | conf, SAR_REG_CFG);
|
|
|
|
if (open_card_oam(card)) {
|
|
printk("%s: Error initializing OAM.\n", card->name);
|
|
return -1;
|
|
}
|
|
|
|
if (open_card_ubr0(card)) {
|
|
printk("%s: Error initializing UBR0.\n", card->name);
|
|
return -1;
|
|
}
|
|
|
|
IPRINTK("%s: opened IDT77252 ABR SAR.\n", card->name);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
idt77252_dev_close(struct atm_dev *dev)
|
|
{
|
|
struct idt77252_dev *card = dev->dev_data;
|
|
u32 conf;
|
|
|
|
close_card_oam(card);
|
|
|
|
conf = SAR_CFG_RXPTH | /* enable receive path */
|
|
SAR_RX_DELAY | /* interrupt on complete PDU */
|
|
SAR_CFG_RAWIE | /* interrupt enable on raw cells */
|
|
SAR_CFG_RQFIE | /* interrupt on RSQ almost full */
|
|
SAR_CFG_TMOIE | /* interrupt on timer overflow */
|
|
SAR_CFG_FBIE | /* interrupt on low free buffers */
|
|
SAR_CFG_TXEN | /* transmit operation enable */
|
|
SAR_CFG_TXINT | /* interrupt on transmit status */
|
|
SAR_CFG_TXUIE | /* interrupt on xmit underrun */
|
|
SAR_CFG_TXSFI /* interrupt on TSQ almost full */
|
|
;
|
|
|
|
writel(readl(SAR_REG_CFG) & ~(conf), SAR_REG_CFG);
|
|
|
|
DIPRINTK("%s: closed IDT77252 ABR SAR.\n", card->name);
|
|
}
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* Initialisation and Deinitialization of IDT77252 */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
|
|
static void
|
|
deinit_card(struct idt77252_dev *card)
|
|
{
|
|
struct sk_buff *skb;
|
|
int i, j;
|
|
|
|
if (!test_bit(IDT77252_BIT_INIT, &card->flags)) {
|
|
printk("%s: SAR not yet initialized.\n", card->name);
|
|
return;
|
|
}
|
|
DIPRINTK("idt77252: deinitialize card %u\n", card->index);
|
|
|
|
writel(0, SAR_REG_CFG);
|
|
|
|
if (card->atmdev)
|
|
atm_dev_deregister(card->atmdev);
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
for (j = 0; j < FBQ_SIZE; j++) {
|
|
skb = card->sbpool[i].skb[j];
|
|
if (skb) {
|
|
pci_unmap_single(card->pcidev,
|
|
IDT77252_PRV_PADDR(skb),
|
|
skb->end - skb->data,
|
|
PCI_DMA_FROMDEVICE);
|
|
card->sbpool[i].skb[j] = NULL;
|
|
dev_kfree_skb(skb);
|
|
}
|
|
}
|
|
}
|
|
|
|
vfree(card->soft_tst);
|
|
|
|
vfree(card->scd2vc);
|
|
|
|
vfree(card->vcs);
|
|
|
|
if (card->raw_cell_hnd) {
|
|
pci_free_consistent(card->pcidev, 2 * sizeof(u32),
|
|
card->raw_cell_hnd, card->raw_cell_paddr);
|
|
}
|
|
|
|
if (card->rsq.base) {
|
|
DIPRINTK("%s: Release RSQ ...\n", card->name);
|
|
deinit_rsq(card);
|
|
}
|
|
|
|
if (card->tsq.base) {
|
|
DIPRINTK("%s: Release TSQ ...\n", card->name);
|
|
deinit_tsq(card);
|
|
}
|
|
|
|
DIPRINTK("idt77252: Release IRQ.\n");
|
|
free_irq(card->pcidev->irq, card);
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
if (card->fbq[i])
|
|
iounmap(card->fbq[i]);
|
|
}
|
|
|
|
if (card->membase)
|
|
iounmap(card->membase);
|
|
|
|
clear_bit(IDT77252_BIT_INIT, &card->flags);
|
|
DIPRINTK("%s: Card deinitialized.\n", card->name);
|
|
}
|
|
|
|
|
|
static int __devinit
|
|
init_sram(struct idt77252_dev *card)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < card->sramsize; i += 4)
|
|
write_sram(card, (i >> 2), 0);
|
|
|
|
/* set SRAM layout for THIS card */
|
|
if (card->sramsize == (512 * 1024)) {
|
|
card->tct_base = SAR_SRAM_TCT_128_BASE;
|
|
card->tct_size = (SAR_SRAM_TCT_128_TOP - card->tct_base + 1)
|
|
/ SAR_SRAM_TCT_SIZE;
|
|
card->rct_base = SAR_SRAM_RCT_128_BASE;
|
|
card->rct_size = (SAR_SRAM_RCT_128_TOP - card->rct_base + 1)
|
|
/ SAR_SRAM_RCT_SIZE;
|
|
card->rt_base = SAR_SRAM_RT_128_BASE;
|
|
card->scd_base = SAR_SRAM_SCD_128_BASE;
|
|
card->scd_size = (SAR_SRAM_SCD_128_TOP - card->scd_base + 1)
|
|
/ SAR_SRAM_SCD_SIZE;
|
|
card->tst[0] = SAR_SRAM_TST1_128_BASE;
|
|
card->tst[1] = SAR_SRAM_TST2_128_BASE;
|
|
card->tst_size = SAR_SRAM_TST1_128_TOP - card->tst[0] + 1;
|
|
card->abrst_base = SAR_SRAM_ABRSTD_128_BASE;
|
|
card->abrst_size = SAR_ABRSTD_SIZE_8K;
|
|
card->fifo_base = SAR_SRAM_FIFO_128_BASE;
|
|
card->fifo_size = SAR_RXFD_SIZE_32K;
|
|
} else {
|
|
card->tct_base = SAR_SRAM_TCT_32_BASE;
|
|
card->tct_size = (SAR_SRAM_TCT_32_TOP - card->tct_base + 1)
|
|
/ SAR_SRAM_TCT_SIZE;
|
|
card->rct_base = SAR_SRAM_RCT_32_BASE;
|
|
card->rct_size = (SAR_SRAM_RCT_32_TOP - card->rct_base + 1)
|
|
/ SAR_SRAM_RCT_SIZE;
|
|
card->rt_base = SAR_SRAM_RT_32_BASE;
|
|
card->scd_base = SAR_SRAM_SCD_32_BASE;
|
|
card->scd_size = (SAR_SRAM_SCD_32_TOP - card->scd_base + 1)
|
|
/ SAR_SRAM_SCD_SIZE;
|
|
card->tst[0] = SAR_SRAM_TST1_32_BASE;
|
|
card->tst[1] = SAR_SRAM_TST2_32_BASE;
|
|
card->tst_size = (SAR_SRAM_TST1_32_TOP - card->tst[0] + 1);
|
|
card->abrst_base = SAR_SRAM_ABRSTD_32_BASE;
|
|
card->abrst_size = SAR_ABRSTD_SIZE_1K;
|
|
card->fifo_base = SAR_SRAM_FIFO_32_BASE;
|
|
card->fifo_size = SAR_RXFD_SIZE_4K;
|
|
}
|
|
|
|
/* Initialize TCT */
|
|
for (i = 0; i < card->tct_size; i++) {
|
|
write_sram(card, i * SAR_SRAM_TCT_SIZE + 0, 0);
|
|
write_sram(card, i * SAR_SRAM_TCT_SIZE + 1, 0);
|
|
write_sram(card, i * SAR_SRAM_TCT_SIZE + 2, 0);
|
|
write_sram(card, i * SAR_SRAM_TCT_SIZE + 3, 0);
|
|
write_sram(card, i * SAR_SRAM_TCT_SIZE + 4, 0);
|
|
write_sram(card, i * SAR_SRAM_TCT_SIZE + 5, 0);
|
|
write_sram(card, i * SAR_SRAM_TCT_SIZE + 6, 0);
|
|
write_sram(card, i * SAR_SRAM_TCT_SIZE + 7, 0);
|
|
}
|
|
|
|
/* Initialize RCT */
|
|
for (i = 0; i < card->rct_size; i++) {
|
|
write_sram(card, card->rct_base + i * SAR_SRAM_RCT_SIZE,
|
|
(u32) SAR_RCTE_RAWCELLINTEN);
|
|
write_sram(card, card->rct_base + i * SAR_SRAM_RCT_SIZE + 1,
|
|
(u32) 0);
|
|
write_sram(card, card->rct_base + i * SAR_SRAM_RCT_SIZE + 2,
|
|
(u32) 0);
|
|
write_sram(card, card->rct_base + i * SAR_SRAM_RCT_SIZE + 3,
|
|
(u32) 0xffffffff);
|
|
}
|
|
|
|
writel((SAR_FBQ0_LOW << 28) | 0x00000000 | 0x00000000 |
|
|
(SAR_FB_SIZE_0 / 48), SAR_REG_FBQS0);
|
|
writel((SAR_FBQ1_LOW << 28) | 0x00000000 | 0x00000000 |
|
|
(SAR_FB_SIZE_1 / 48), SAR_REG_FBQS1);
|
|
writel((SAR_FBQ2_LOW << 28) | 0x00000000 | 0x00000000 |
|
|
(SAR_FB_SIZE_2 / 48), SAR_REG_FBQS2);
|
|
writel((SAR_FBQ3_LOW << 28) | 0x00000000 | 0x00000000 |
|
|
(SAR_FB_SIZE_3 / 48), SAR_REG_FBQS3);
|
|
|
|
/* Initialize rate table */
|
|
for (i = 0; i < 256; i++) {
|
|
write_sram(card, card->rt_base + i, log_to_rate[i]);
|
|
}
|
|
|
|
for (i = 0; i < 128; i++) {
|
|
unsigned int tmp;
|
|
|
|
tmp = rate_to_log[(i << 2) + 0] << 0;
|
|
tmp |= rate_to_log[(i << 2) + 1] << 8;
|
|
tmp |= rate_to_log[(i << 2) + 2] << 16;
|
|
tmp |= rate_to_log[(i << 2) + 3] << 24;
|
|
write_sram(card, card->rt_base + 256 + i, tmp);
|
|
}
|
|
|
|
#if 0 /* Fill RDF and AIR tables. */
|
|
for (i = 0; i < 128; i++) {
|
|
unsigned int tmp;
|
|
|
|
tmp = RDF[0][(i << 1) + 0] << 16;
|
|
tmp |= RDF[0][(i << 1) + 1] << 0;
|
|
write_sram(card, card->rt_base + 512 + i, tmp);
|
|
}
|
|
|
|
for (i = 0; i < 128; i++) {
|
|
unsigned int tmp;
|
|
|
|
tmp = AIR[0][(i << 1) + 0] << 16;
|
|
tmp |= AIR[0][(i << 1) + 1] << 0;
|
|
write_sram(card, card->rt_base + 640 + i, tmp);
|
|
}
|
|
#endif
|
|
|
|
IPRINTK("%s: initialize rate table ...\n", card->name);
|
|
writel(card->rt_base << 2, SAR_REG_RTBL);
|
|
|
|
/* Initialize TSTs */
|
|
IPRINTK("%s: initialize TST ...\n", card->name);
|
|
card->tst_free = card->tst_size - 2; /* last two are jumps */
|
|
|
|
for (i = card->tst[0]; i < card->tst[0] + card->tst_size - 2; i++)
|
|
write_sram(card, i, TSTE_OPC_VAR);
|
|
write_sram(card, i++, TSTE_OPC_JMP | (card->tst[0] << 2));
|
|
idt77252_sram_write_errors = 1;
|
|
write_sram(card, i++, TSTE_OPC_JMP | (card->tst[1] << 2));
|
|
idt77252_sram_write_errors = 0;
|
|
for (i = card->tst[1]; i < card->tst[1] + card->tst_size - 2; i++)
|
|
write_sram(card, i, TSTE_OPC_VAR);
|
|
write_sram(card, i++, TSTE_OPC_JMP | (card->tst[1] << 2));
|
|
idt77252_sram_write_errors = 1;
|
|
write_sram(card, i++, TSTE_OPC_JMP | (card->tst[0] << 2));
|
|
idt77252_sram_write_errors = 0;
|
|
|
|
card->tst_index = 0;
|
|
writel(card->tst[0] << 2, SAR_REG_TSTB);
|
|
|
|
/* Initialize ABRSTD and Receive FIFO */
|
|
IPRINTK("%s: initialize ABRSTD ...\n", card->name);
|
|
writel(card->abrst_size | (card->abrst_base << 2),
|
|
SAR_REG_ABRSTD);
|
|
|
|
IPRINTK("%s: initialize receive fifo ...\n", card->name);
|
|
writel(card->fifo_size | (card->fifo_base << 2),
|
|
SAR_REG_RXFD);
|
|
|
|
IPRINTK("%s: SRAM initialization complete.\n", card->name);
|
|
return 0;
|
|
}
|
|
|
|
static int __devinit
|
|
init_card(struct atm_dev *dev)
|
|
{
|
|
struct idt77252_dev *card = dev->dev_data;
|
|
struct pci_dev *pcidev = card->pcidev;
|
|
unsigned long tmpl, modl;
|
|
unsigned int linkrate, rsvdcr;
|
|
unsigned int tst_entries;
|
|
struct net_device *tmp;
|
|
char tname[10];
|
|
|
|
u32 size;
|
|
u_char pci_byte;
|
|
u32 conf;
|
|
int i, k;
|
|
|
|
if (test_bit(IDT77252_BIT_INIT, &card->flags)) {
|
|
printk("Error: SAR already initialized.\n");
|
|
return -1;
|
|
}
|
|
|
|
/*****************************************************************/
|
|
/* P C I C O N F I G U R A T I O N */
|
|
/*****************************************************************/
|
|
|
|
/* Set PCI Retry-Timeout and TRDY timeout */
|
|
IPRINTK("%s: Checking PCI retries.\n", card->name);
|
|
if (pci_read_config_byte(pcidev, 0x40, &pci_byte) != 0) {
|
|
printk("%s: can't read PCI retry timeout.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
if (pci_byte != 0) {
|
|
IPRINTK("%s: PCI retry timeout: %d, set to 0.\n",
|
|
card->name, pci_byte);
|
|
if (pci_write_config_byte(pcidev, 0x40, 0) != 0) {
|
|
printk("%s: can't set PCI retry timeout.\n",
|
|
card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
}
|
|
IPRINTK("%s: Checking PCI TRDY.\n", card->name);
|
|
if (pci_read_config_byte(pcidev, 0x41, &pci_byte) != 0) {
|
|
printk("%s: can't read PCI TRDY timeout.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
if (pci_byte != 0) {
|
|
IPRINTK("%s: PCI TRDY timeout: %d, set to 0.\n",
|
|
card->name, pci_byte);
|
|
if (pci_write_config_byte(pcidev, 0x41, 0) != 0) {
|
|
printk("%s: can't set PCI TRDY timeout.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
}
|
|
/* Reset Timer register */
|
|
if (readl(SAR_REG_STAT) & SAR_STAT_TMROF) {
|
|
printk("%s: resetting timer overflow.\n", card->name);
|
|
writel(SAR_STAT_TMROF, SAR_REG_STAT);
|
|
}
|
|
IPRINTK("%s: Request IRQ ... ", card->name);
|
|
if (request_irq(pcidev->irq, idt77252_interrupt, IRQF_DISABLED|IRQF_SHARED,
|
|
card->name, card) != 0) {
|
|
printk("%s: can't allocate IRQ.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
IPRINTK("got %d.\n", pcidev->irq);
|
|
|
|
/*****************************************************************/
|
|
/* C H E C K A N D I N I T S R A M */
|
|
/*****************************************************************/
|
|
|
|
IPRINTK("%s: Initializing SRAM\n", card->name);
|
|
|
|
/* preset size of connecton table, so that init_sram() knows about it */
|
|
conf = SAR_CFG_TX_FIFO_SIZE_9 | /* Use maximum fifo size */
|
|
SAR_CFG_RXSTQ_SIZE_8k | /* Receive Status Queue is 8k */
|
|
SAR_CFG_IDLE_CLP | /* Set CLP on idle cells */
|
|
#ifndef CONFIG_ATM_IDT77252_SEND_IDLE
|
|
SAR_CFG_NO_IDLE | /* Do not send idle cells */
|
|
#endif
|
|
0;
|
|
|
|
if (card->sramsize == (512 * 1024))
|
|
conf |= SAR_CFG_CNTBL_1k;
|
|
else
|
|
conf |= SAR_CFG_CNTBL_512;
|
|
|
|
switch (vpibits) {
|
|
case 0:
|
|
conf |= SAR_CFG_VPVCS_0;
|
|
break;
|
|
default:
|
|
case 1:
|
|
conf |= SAR_CFG_VPVCS_1;
|
|
break;
|
|
case 2:
|
|
conf |= SAR_CFG_VPVCS_2;
|
|
break;
|
|
case 8:
|
|
conf |= SAR_CFG_VPVCS_8;
|
|
break;
|
|
}
|
|
|
|
writel(readl(SAR_REG_CFG) | conf, SAR_REG_CFG);
|
|
|
|
if (init_sram(card) < 0)
|
|
return -1;
|
|
|
|
/********************************************************************/
|
|
/* A L L O C R A M A N D S E T V A R I O U S T H I N G S */
|
|
/********************************************************************/
|
|
/* Initialize TSQ */
|
|
if (0 != init_tsq(card)) {
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
/* Initialize RSQ */
|
|
if (0 != init_rsq(card)) {
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
|
|
card->vpibits = vpibits;
|
|
if (card->sramsize == (512 * 1024)) {
|
|
card->vcibits = 10 - card->vpibits;
|
|
} else {
|
|
card->vcibits = 9 - card->vpibits;
|
|
}
|
|
|
|
card->vcimask = 0;
|
|
for (k = 0, i = 1; k < card->vcibits; k++) {
|
|
card->vcimask |= i;
|
|
i <<= 1;
|
|
}
|
|
|
|
IPRINTK("%s: Setting VPI/VCI mask to zero.\n", card->name);
|
|
writel(0, SAR_REG_VPM);
|
|
|
|
/* Little Endian Order */
|
|
writel(0, SAR_REG_GP);
|
|
|
|
/* Initialize RAW Cell Handle Register */
|
|
card->raw_cell_hnd = pci_alloc_consistent(card->pcidev, 2 * sizeof(u32),
|
|
&card->raw_cell_paddr);
|
|
if (!card->raw_cell_hnd) {
|
|
printk("%s: memory allocation failure.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
memset(card->raw_cell_hnd, 0, 2 * sizeof(u32));
|
|
writel(card->raw_cell_paddr, SAR_REG_RAWHND);
|
|
IPRINTK("%s: raw cell handle is at 0x%p.\n", card->name,
|
|
card->raw_cell_hnd);
|
|
|
|
size = sizeof(struct vc_map *) * card->tct_size;
|
|
IPRINTK("%s: allocate %d byte for VC map.\n", card->name, size);
|
|
if (NULL == (card->vcs = vmalloc(size))) {
|
|
printk("%s: memory allocation failure.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
memset(card->vcs, 0, size);
|
|
|
|
size = sizeof(struct vc_map *) * card->scd_size;
|
|
IPRINTK("%s: allocate %d byte for SCD to VC mapping.\n",
|
|
card->name, size);
|
|
if (NULL == (card->scd2vc = vmalloc(size))) {
|
|
printk("%s: memory allocation failure.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
memset(card->scd2vc, 0, size);
|
|
|
|
size = sizeof(struct tst_info) * (card->tst_size - 2);
|
|
IPRINTK("%s: allocate %d byte for TST to VC mapping.\n",
|
|
card->name, size);
|
|
if (NULL == (card->soft_tst = vmalloc(size))) {
|
|
printk("%s: memory allocation failure.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
for (i = 0; i < card->tst_size - 2; i++) {
|
|
card->soft_tst[i].tste = TSTE_OPC_VAR;
|
|
card->soft_tst[i].vc = NULL;
|
|
}
|
|
|
|
if (dev->phy == NULL) {
|
|
printk("%s: No LT device defined.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
if (dev->phy->ioctl == NULL) {
|
|
printk("%s: LT had no IOCTL funtion defined.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
|
|
#ifdef CONFIG_ATM_IDT77252_USE_SUNI
|
|
/*
|
|
* this is a jhs hack to get around special functionality in the
|
|
* phy driver for the atecom hardware; the functionality doesn't
|
|
* exist in the linux atm suni driver
|
|
*
|
|
* it isn't the right way to do things, but as the guy from NIST
|
|
* said, talking about their measurement of the fine structure
|
|
* constant, "it's good enough for government work."
|
|
*/
|
|
linkrate = 149760000;
|
|
#endif
|
|
|
|
card->link_pcr = (linkrate / 8 / 53);
|
|
printk("%s: Linkrate on ATM line : %u bit/s, %u cell/s.\n",
|
|
card->name, linkrate, card->link_pcr);
|
|
|
|
#ifdef CONFIG_ATM_IDT77252_SEND_IDLE
|
|
card->utopia_pcr = card->link_pcr;
|
|
#else
|
|
card->utopia_pcr = (160000000 / 8 / 54);
|
|
#endif
|
|
|
|
rsvdcr = 0;
|
|
if (card->utopia_pcr > card->link_pcr)
|
|
rsvdcr = card->utopia_pcr - card->link_pcr;
|
|
|
|
tmpl = (unsigned long) rsvdcr * ((unsigned long) card->tst_size - 2);
|
|
modl = tmpl % (unsigned long)card->utopia_pcr;
|
|
tst_entries = (int) (tmpl / (unsigned long)card->utopia_pcr);
|
|
if (modl)
|
|
tst_entries++;
|
|
card->tst_free -= tst_entries;
|
|
fill_tst(card, NULL, tst_entries, TSTE_OPC_NULL);
|
|
|
|
#ifdef HAVE_EEPROM
|
|
idt77252_eeprom_init(card);
|
|
printk("%s: EEPROM: %02x:", card->name,
|
|
idt77252_eeprom_read_status(card));
|
|
|
|
for (i = 0; i < 0x80; i++) {
|
|
printk(" %02x",
|
|
idt77252_eeprom_read_byte(card, i)
|
|
);
|
|
}
|
|
printk("\n");
|
|
#endif /* HAVE_EEPROM */
|
|
|
|
/*
|
|
* XXX: <hack>
|
|
*/
|
|
sprintf(tname, "eth%d", card->index);
|
|
tmp = dev_get_by_name(tname); /* jhs: was "tmp = dev_get(tname);" */
|
|
if (tmp) {
|
|
memcpy(card->atmdev->esi, tmp->dev_addr, 6);
|
|
|
|
printk("%s: ESI %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
card->name, card->atmdev->esi[0], card->atmdev->esi[1],
|
|
card->atmdev->esi[2], card->atmdev->esi[3],
|
|
card->atmdev->esi[4], card->atmdev->esi[5]);
|
|
}
|
|
/*
|
|
* XXX: </hack>
|
|
*/
|
|
|
|
/* Set Maximum Deficit Count for now. */
|
|
writel(0xffff, SAR_REG_MDFCT);
|
|
|
|
set_bit(IDT77252_BIT_INIT, &card->flags);
|
|
|
|
XPRINTK("%s: IDT77252 ABR SAR initialization complete.\n", card->name);
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* Probing of IDT77252 ABR SAR */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
|
|
static int __devinit
|
|
idt77252_preset(struct idt77252_dev *card)
|
|
{
|
|
u16 pci_command;
|
|
|
|
/*****************************************************************/
|
|
/* P C I C O N F I G U R A T I O N */
|
|
/*****************************************************************/
|
|
|
|
XPRINTK("%s: Enable PCI master and memory access for SAR.\n",
|
|
card->name);
|
|
if (pci_read_config_word(card->pcidev, PCI_COMMAND, &pci_command)) {
|
|
printk("%s: can't read PCI_COMMAND.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
if (!(pci_command & PCI_COMMAND_IO)) {
|
|
printk("%s: PCI_COMMAND: %04x (???)\n",
|
|
card->name, pci_command);
|
|
deinit_card(card);
|
|
return (-1);
|
|
}
|
|
pci_command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
|
|
if (pci_write_config_word(card->pcidev, PCI_COMMAND, pci_command)) {
|
|
printk("%s: can't write PCI_COMMAND.\n", card->name);
|
|
deinit_card(card);
|
|
return -1;
|
|
}
|
|
/*****************************************************************/
|
|
/* G E N E R I C R E S E T */
|
|
/*****************************************************************/
|
|
|
|
/* Software reset */
|
|
writel(SAR_CFG_SWRST, SAR_REG_CFG);
|
|
mdelay(1);
|
|
writel(0, SAR_REG_CFG);
|
|
|
|
IPRINTK("%s: Software resetted.\n", card->name);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static unsigned long __devinit
|
|
probe_sram(struct idt77252_dev *card)
|
|
{
|
|
u32 data, addr;
|
|
|
|
writel(0, SAR_REG_DR0);
|
|
writel(SAR_CMD_WRITE_SRAM | (0 << 2), SAR_REG_CMD);
|
|
|
|
for (addr = 0x4000; addr < 0x80000; addr += 0x4000) {
|
|
writel(ATM_POISON, SAR_REG_DR0);
|
|
writel(SAR_CMD_WRITE_SRAM | (addr << 2), SAR_REG_CMD);
|
|
|
|
writel(SAR_CMD_READ_SRAM | (0 << 2), SAR_REG_CMD);
|
|
data = readl(SAR_REG_DR0);
|
|
|
|
if (data != 0)
|
|
break;
|
|
}
|
|
|
|
return addr * sizeof(u32);
|
|
}
|
|
|
|
static int __devinit
|
|
idt77252_init_one(struct pci_dev *pcidev, const struct pci_device_id *id)
|
|
{
|
|
static struct idt77252_dev **last = &idt77252_chain;
|
|
static int index = 0;
|
|
|
|
unsigned long membase, srambase;
|
|
struct idt77252_dev *card;
|
|
struct atm_dev *dev;
|
|
ushort revision = 0;
|
|
int i, err;
|
|
|
|
|
|
if ((err = pci_enable_device(pcidev))) {
|
|
printk("idt77252: can't enable PCI device at %s\n", pci_name(pcidev));
|
|
return err;
|
|
}
|
|
|
|
if (pci_read_config_word(pcidev, PCI_REVISION_ID, &revision)) {
|
|
printk("idt77252-%d: can't read PCI_REVISION_ID\n", index);
|
|
err = -ENODEV;
|
|
goto err_out_disable_pdev;
|
|
}
|
|
|
|
card = kzalloc(sizeof(struct idt77252_dev), GFP_KERNEL);
|
|
if (!card) {
|
|
printk("idt77252-%d: can't allocate private data\n", index);
|
|
err = -ENOMEM;
|
|
goto err_out_disable_pdev;
|
|
}
|
|
card->revision = revision;
|
|
card->index = index;
|
|
card->pcidev = pcidev;
|
|
sprintf(card->name, "idt77252-%d", card->index);
|
|
|
|
INIT_WORK(&card->tqueue, idt77252_softint);
|
|
|
|
membase = pci_resource_start(pcidev, 1);
|
|
srambase = pci_resource_start(pcidev, 2);
|
|
|
|
init_MUTEX(&card->mutex);
|
|
spin_lock_init(&card->cmd_lock);
|
|
spin_lock_init(&card->tst_lock);
|
|
|
|
init_timer(&card->tst_timer);
|
|
card->tst_timer.data = (unsigned long)card;
|
|
card->tst_timer.function = tst_timer;
|
|
|
|
/* Do the I/O remapping... */
|
|
card->membase = ioremap(membase, 1024);
|
|
if (!card->membase) {
|
|
printk("%s: can't ioremap() membase\n", card->name);
|
|
err = -EIO;
|
|
goto err_out_free_card;
|
|
}
|
|
|
|
if (idt77252_preset(card)) {
|
|
printk("%s: preset failed\n", card->name);
|
|
err = -EIO;
|
|
goto err_out_iounmap;
|
|
}
|
|
|
|
dev = atm_dev_register("idt77252", &idt77252_ops, -1, NULL);
|
|
if (!dev) {
|
|
printk("%s: can't register atm device\n", card->name);
|
|
err = -EIO;
|
|
goto err_out_iounmap;
|
|
}
|
|
dev->dev_data = card;
|
|
card->atmdev = dev;
|
|
|
|
#ifdef CONFIG_ATM_IDT77252_USE_SUNI
|
|
suni_init(dev);
|
|
if (!dev->phy) {
|
|
printk("%s: can't init SUNI\n", card->name);
|
|
err = -EIO;
|
|
goto err_out_deinit_card;
|
|
}
|
|
#endif /* CONFIG_ATM_IDT77252_USE_SUNI */
|
|
|
|
card->sramsize = probe_sram(card);
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
card->fbq[i] = ioremap(srambase | 0x200000 | (i << 18), 4);
|
|
if (!card->fbq[i]) {
|
|
printk("%s: can't ioremap() FBQ%d\n", card->name, i);
|
|
err = -EIO;
|
|
goto err_out_deinit_card;
|
|
}
|
|
}
|
|
|
|
printk("%s: ABR SAR (Rev %c): MEM %08lx SRAM %08lx [%u KB]\n",
|
|
card->name, ((revision > 1) && (revision < 25)) ?
|
|
'A' + revision - 1 : '?', membase, srambase,
|
|
card->sramsize / 1024);
|
|
|
|
if (init_card(dev)) {
|
|
printk("%s: init_card failed\n", card->name);
|
|
err = -EIO;
|
|
goto err_out_deinit_card;
|
|
}
|
|
|
|
dev->ci_range.vpi_bits = card->vpibits;
|
|
dev->ci_range.vci_bits = card->vcibits;
|
|
dev->link_rate = card->link_pcr;
|
|
|
|
if (dev->phy->start)
|
|
dev->phy->start(dev);
|
|
|
|
if (idt77252_dev_open(card)) {
|
|
printk("%s: dev_open failed\n", card->name);
|
|
err = -EIO;
|
|
goto err_out_stop;
|
|
}
|
|
|
|
*last = card;
|
|
last = &card->next;
|
|
index++;
|
|
|
|
return 0;
|
|
|
|
err_out_stop:
|
|
if (dev->phy->stop)
|
|
dev->phy->stop(dev);
|
|
|
|
err_out_deinit_card:
|
|
deinit_card(card);
|
|
|
|
err_out_iounmap:
|
|
iounmap(card->membase);
|
|
|
|
err_out_free_card:
|
|
kfree(card);
|
|
|
|
err_out_disable_pdev:
|
|
pci_disable_device(pcidev);
|
|
return err;
|
|
}
|
|
|
|
static struct pci_device_id idt77252_pci_tbl[] =
|
|
{
|
|
{ PCI_VENDOR_ID_IDT, PCI_DEVICE_ID_IDT_IDT77252,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
|
|
{ 0, }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, idt77252_pci_tbl);
|
|
|
|
static struct pci_driver idt77252_driver = {
|
|
.name = "idt77252",
|
|
.id_table = idt77252_pci_tbl,
|
|
.probe = idt77252_init_one,
|
|
};
|
|
|
|
static int __init idt77252_init(void)
|
|
{
|
|
struct sk_buff *skb;
|
|
|
|
printk("%s: at %p\n", __FUNCTION__, idt77252_init);
|
|
|
|
if (sizeof(skb->cb) < sizeof(struct atm_skb_data) +
|
|
sizeof(struct idt77252_skb_prv)) {
|
|
printk(KERN_ERR "%s: skb->cb is too small (%lu < %lu)\n",
|
|
__FUNCTION__, (unsigned long) sizeof(skb->cb),
|
|
(unsigned long) sizeof(struct atm_skb_data) +
|
|
sizeof(struct idt77252_skb_prv));
|
|
return -EIO;
|
|
}
|
|
|
|
return pci_register_driver(&idt77252_driver);
|
|
}
|
|
|
|
static void __exit idt77252_exit(void)
|
|
{
|
|
struct idt77252_dev *card;
|
|
struct atm_dev *dev;
|
|
|
|
pci_unregister_driver(&idt77252_driver);
|
|
|
|
while (idt77252_chain) {
|
|
card = idt77252_chain;
|
|
dev = card->atmdev;
|
|
idt77252_chain = card->next;
|
|
|
|
if (dev->phy->stop)
|
|
dev->phy->stop(dev);
|
|
deinit_card(card);
|
|
pci_disable_device(card->pcidev);
|
|
kfree(card);
|
|
}
|
|
|
|
DIPRINTK("idt77252: finished cleanup-module().\n");
|
|
}
|
|
|
|
module_init(idt77252_init);
|
|
module_exit(idt77252_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
module_param(vpibits, uint, 0);
|
|
MODULE_PARM_DESC(vpibits, "number of VPI bits supported (0, 1, or 2)");
|
|
#ifdef CONFIG_ATM_IDT77252_DEBUG
|
|
module_param(debug, ulong, 0644);
|
|
MODULE_PARM_DESC(debug, "debug bitmap, see drivers/atm/idt77252.h");
|
|
#endif
|
|
|
|
MODULE_AUTHOR("Eddie C. Dost <ecd@atecom.com>");
|
|
MODULE_DESCRIPTION("IDT77252 ABR SAR Driver");
|