au1k_ir.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:20k
- /*
- *
- * Alchemy Semi Au1000 IrDA driver
- *
- * Copyright 2001 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- * ppopov@mvista.com or source@mvista.com
- *
- * ########################################################################
- *
- * This program is free software; you can distribute it and/or modify it
- * under the terms of the GNU General Public License (Version 2) as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * ########################################################################
- *
- *
- */
- #ifndef __mips__
- #error This driver only works with MIPS architectures!
- #endif
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/types.h>
- #include <linux/init.h>
- #include <linux/errno.h>
- #include <linux/netdevice.h>
- #include <linux/slab.h>
- #include <linux/rtnetlink.h>
- #include <linux/interrupt.h>
- #include <linux/pm.h>
- #include <asm/irq.h>
- #include <asm/bitops.h>
- #include <asm/io.h>
- #include <asm/au1000.h>
- #include <asm/pb1000.h>
- #include <net/irda/irda.h>
- #include <net/irda/irmod.h>
- #include <net/irda/wrapper.h>
- #include <net/irda/irda_device.h>
- #include "net/irda/au1000_ircc.h"
- static int au1k_irda_net_init(struct net_device *);
- static int au1k_irda_start(struct net_device *);
- static int au1k_irda_stop(struct net_device *dev);
- static int au1k_irda_hard_xmit(struct sk_buff *, struct net_device *);
- static int au1k_irda_rx(struct net_device *);
- static void au1k_irda_interrupt(int, void *, struct pt_regs *);
- static void au1k_tx_timeout(struct net_device *);
- static struct net_device_stats *au1k_irda_stats(struct net_device *);
- static int au1k_irda_ioctl(struct net_device *, struct ifreq *, int);
- static int au1k_irda_set_speed(struct net_device *dev, int speed);
- static void *dma_alloc(size_t, dma_addr_t *);
- static void dma_free(void *, size_t);
- static int qos_mtt_bits = 0x07; /* 1 ms or more */
- static struct net_device *ir_devs[NUM_IR_IFF];
- static char version[] __devinitdata =
- "au1k_ircc:1.0 ppopov@mvista.comn";
- #define RUN_AT(x) (jiffies + (x))
- /*
- * IrDA peripheral bug. You have to read the register
- * twice to get the right value.
- */
- u32 read_ir_reg(u32 addr)
- {
- readl(addr);
- return readl(addr);
- }
- /*
- * Buffer allocation/deallocation routines. The buffer descriptor returned
- * has the virtual and dma address of a buffer suitable for
- * both, receive and transmit operations.
- */
- static db_dest_t *GetFreeDB(struct au1k_private *aup)
- {
- db_dest_t *pDB;
- pDB = aup->pDBfree;
- if (pDB) {
- aup->pDBfree = pDB->pnext;
- }
- return pDB;
- }
- static void ReleaseDB(struct au1k_private *aup, db_dest_t *pDB)
- {
- db_dest_t *pDBfree = aup->pDBfree;
- if (pDBfree)
- pDBfree->pnext = pDB;
- aup->pDBfree = pDB;
- }
- /*
- DMA memory allocation, derived from pci_alloc_consistent.
- However, the Au1000 data cache is coherent (when programmed
- so), therefore we return KSEG0 address, not KSEG1.
- */
- static void *dma_alloc(size_t size, dma_addr_t * dma_handle)
- {
- void *ret;
- int gfp = GFP_ATOMIC | GFP_DMA;
- ret = (void *) __get_free_pages(gfp, get_order(size));
- if (ret != NULL) {
- memset(ret, 0, size);
- *dma_handle = virt_to_bus(ret);
- ret = KSEG0ADDR(ret);
- }
- return ret;
- }
- static void dma_free(void *vaddr, size_t size)
- {
- vaddr = KSEG0ADDR(vaddr);
- free_pages((unsigned long) vaddr, get_order(size));
- }
- static void
- setup_hw_rings(struct au1k_private *aup, u32 rx_base, u32 tx_base)
- {
- int i;
- for (i=0; i<NUM_IR_DESC; i++) {
- aup->rx_ring[i] = (volatile ring_dest_t *)
- (rx_base + sizeof(ring_dest_t)*i);
- }
- for (i=0; i<NUM_IR_DESC; i++) {
- aup->tx_ring[i] = (volatile ring_dest_t *)
- (tx_base + sizeof(ring_dest_t)*i);
- }
- }
- /*
- * Device has already been stopped at this point.
- */
- static void au1k_irda_net_uninit(struct net_device *dev)
- {
- dev->hard_start_xmit = NULL;
- dev->open = NULL;
- dev->stop = NULL;
- dev->do_ioctl = NULL;
- dev->get_stats = NULL;
- dev->priv = NULL;
- }
- static int au1k_irda_init(void)
- {
- static unsigned version_printed = 0;
- struct net_device *dev;
- int err;
- if (version_printed++ == 0) printk(version);
- rtnl_lock();
- dev = dev_alloc("irda%d", &err);
- if (dev) {
- dev->irq = AU1000_IRDA_RX_INT; /* TX has its own interrupt */
- dev->init = au1k_irda_net_init;
- dev->uninit = au1k_irda_net_uninit;
- err = register_netdevice(dev);
- if (err)
- kfree(dev);
- else
- ir_devs[0] = dev;
- printk(KERN_INFO "IrDA: Registered device %sn", dev->name);
- }
- rtnl_unlock();
- return err;
- }
- static int au1k_irda_init_iobuf(iobuff_t *io, int size)
- {
- io->head = kmalloc(size, GFP_KERNEL);
- if (io->head != NULL) {
- io->truesize = size;
- io->in_frame = FALSE;
- io->state = OUTSIDE_FRAME;
- io->data = io->head;
- }
- return io->head ? 0 : -ENOMEM;
- }
- static int au1k_irda_net_init(struct net_device *dev)
- {
- struct au1k_private *aup = NULL;
- int i, retval = 0, err;
- db_dest_t *pDB, *pDBfree;
- unsigned long temp;
- dev->priv = kmalloc(sizeof(struct au1k_private), GFP_KERNEL);
- if (dev->priv == NULL) {
- retval = -ENOMEM;
- goto out;
- }
- memset(dev->priv, 0, sizeof(struct au1k_private));
- aup = dev->priv;
- err = au1k_irda_init_iobuf(&aup->rx_buff, 14384);
- if (err)
- goto out;
- dev->open = au1k_irda_start;
- dev->hard_start_xmit = au1k_irda_hard_xmit;
- dev->stop = au1k_irda_stop;
- dev->get_stats = au1k_irda_stats;
- dev->do_ioctl = au1k_irda_ioctl;
- dev->tx_timeout = au1k_tx_timeout;
- irda_device_setup(dev);
- irda_init_max_qos_capabilies(&aup->qos);
- /* The only value we must override it the baudrate */
- aup->qos.baud_rate.bits = IR_9600|IR_19200|IR_38400|IR_57600|
- IR_115200|IR_576000 |(IR_4000000 << 8);
-
- aup->qos.min_turn_time.bits = qos_mtt_bits;
- irda_qos_bits_to_value(&aup->qos);
- /* Tx ring follows rx ring + 512 bytes */
- /* we need a 1k aligned buffer */
- aup->rx_ring[0] = (ring_dest_t *)
- dma_alloc(2*MAX_NUM_IR_DESC*(sizeof(ring_dest_t)), &temp);
- /* allocate the data buffers */
- aup->db[0].vaddr =
- (void *)dma_alloc(MAX_BUF_SIZE * 2*NUM_IR_DESC, &temp);
- if (!aup->db[0].vaddr || !aup->rx_ring[0]) {
- retval = -ENOMEM;
- goto out;
- }
- setup_hw_rings(aup, (u32)aup->rx_ring[0], (u32)aup->rx_ring[0] + 512);
- pDBfree = NULL;
- pDB = aup->db;
- for (i=0; i<(2*NUM_IR_DESC); i++) {
- pDB->pnext = pDBfree;
- pDBfree = pDB;
- pDB->vaddr =
- (u32 *)((unsigned)aup->db[0].vaddr + MAX_BUF_SIZE*i);
- pDB->dma_addr = (dma_addr_t)virt_to_bus(pDB->vaddr);
- pDB++;
- }
- aup->pDBfree = pDBfree;
- /* attach a data buffer to each descriptor */
- for (i=0; i<NUM_IR_DESC; i++) {
- pDB = GetFreeDB(aup);
- if (!pDB) goto out;
- aup->rx_ring[i]->addr_0 = (u8)(pDB->dma_addr & 0xff);
- aup->rx_ring[i]->addr_1 = (u8)((pDB->dma_addr>>8) & 0xff);
- aup->rx_ring[i]->addr_2 = (u8)((pDB->dma_addr>>16) & 0xff);
- aup->rx_ring[i]->addr_3 = (u8)((pDB->dma_addr>>24) & 0xff);
- aup->rx_db_inuse[i] = pDB;
- }
- for (i=0; i<NUM_IR_DESC; i++) {
- pDB = GetFreeDB(aup);
- if (!pDB) goto out;
- aup->tx_ring[i]->addr_0 = (u8)(pDB->dma_addr & 0xff);
- aup->tx_ring[i]->addr_1 = (u8)((pDB->dma_addr>>8) & 0xff);
- aup->tx_ring[i]->addr_2 = (u8)((pDB->dma_addr>>16) & 0xff);
- aup->tx_ring[i]->addr_3 = (u8)((pDB->dma_addr>>24) & 0xff);
- aup->tx_ring[i]->count_0 = 0;
- aup->tx_ring[i]->count_1 = 0;
- aup->tx_ring[i]->flags = 0;
- aup->tx_db_inuse[i] = pDB;
- }
- return 0;
- out:
- if (aup->db[0].vaddr)
- dma_free((void *)aup->db[0].vaddr,
- MAX_BUF_SIZE * 2*NUM_IR_DESC);
- if (aup->rx_ring[0])
- kfree((void *)aup->rx_ring[0]);
- if (aup->rx_buff.head)
- kfree(aup->rx_buff.head);
- if (dev->priv != NULL)
- kfree(dev->priv);
- unregister_netdevice(dev);
- printk(KERN_ERR "%s: au1k_init_module failed. Returns %dn",
- dev->name, retval);
- return retval;
- }
- static int au1k_init(struct net_device *dev)
- {
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- int i;
- u32 control;
- u32 ring_address;
- /* bring the device out of reset */
- control = 0xe; /* coherent, clock enable, one half system clock */
-
- #ifndef CONFIG_CPU_LITTLE_ENDIAN
- control |= 1;
- #endif
- aup->tx_head = 0;
- aup->tx_tail = 0;
- aup->rx_head = 0;
- for (i=0; i<NUM_IR_DESC; i++) {
- aup->rx_ring[i]->flags = AU_OWN;
- }
- writel(control, IR_INTERFACE_CONFIG);
- au_sync_delay(10);
- writel(read_ir_reg(IR_ENABLE) & ~0x8000, IR_ENABLE); /* disable PHY */
- au_sync_delay(1);
- writel(MAX_BUF_SIZE, IR_MAX_PKT_LEN);
- ring_address = (u32)virt_to_phys((void *)aup->rx_ring[0]);
- writel(ring_address >> 26, IR_RING_BASE_ADDR_H);
- writel((ring_address >> 10) & 0xffff, IR_RING_BASE_ADDR_L);
- writel(RING_SIZE_64<<8 | RING_SIZE_64<<12, IR_RING_SIZE);
- writel(1<<2 | IR_ONE_PIN, IR_CONFIG_2); /* 48MHz */
- writel(0, IR_RING_ADDR_CMPR);
- au1k_irda_set_speed(dev, 9600);
- return 0;
- }
- static int au1k_irda_start(struct net_device *dev)
- {
- int retval;
- char hwname[32];
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- MOD_INC_USE_COUNT;
- if ((retval = au1k_init(dev))) {
- printk(KERN_ERR "%s: error in au1k_initn", dev->name);
- MOD_DEC_USE_COUNT;
- return retval;
- }
- if ((retval = request_irq(AU1000_IRDA_TX_INT, &au1k_irda_interrupt,
- 0, dev->name, dev))) {
- printk(KERN_ERR "%s: unable to get IRQ %dn",
- dev->name, dev->irq);
- MOD_DEC_USE_COUNT;
- return retval;
- }
- if ((retval = request_irq(AU1000_IRDA_RX_INT, &au1k_irda_interrupt,
- 0, dev->name, dev))) {
- free_irq(AU1000_IRDA_TX_INT, dev);
- printk(KERN_ERR "%s: unable to get IRQ %dn",
- dev->name, dev->irq);
- MOD_DEC_USE_COUNT;
- return retval;
- }
- /* Give self a hardware name */
- sprintf(hwname, "Au1000 SIR/FIR");
- aup->irlap = irlap_open(dev, &aup->qos, hwname);
- netif_start_queue(dev);
- writel(read_ir_reg(IR_CONFIG_2) | 1<<8, IR_CONFIG_2); /* int enable */
- aup->timer.expires = RUN_AT((3*HZ));
- aup->timer.data = (unsigned long)dev;
- return 0;
- }
- static int au1k_irda_stop(struct net_device *dev)
- {
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- /* disable interrupts */
- writel(read_ir_reg(IR_CONFIG_2) & ~(1<<8), IR_CONFIG_2);
- writel(0, IR_CONFIG_1);
- writel(0, IR_INTERFACE_CONFIG); /* disable clock */
- au_sync();
- if (aup->irlap) {
- irlap_close(aup->irlap);
- aup->irlap = NULL;
- }
- netif_stop_queue(dev);
- del_timer(&aup->timer);
- /* disable the interrupt */
- free_irq(AU1000_IRDA_TX_INT, dev);
- free_irq(AU1000_IRDA_RX_INT, dev);
- MOD_DEC_USE_COUNT;
- return 0;
- }
- static void __exit au1k_irda_exit(void)
- {
- struct net_device *dev = ir_devs[0];
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- if (!dev) {
- printk(KERN_ERR "au1k_ircc no dev foundn");
- return;
- }
- if (aup->db[0].vaddr) {
- dma_free((void *)aup->db[0].vaddr,
- MAX_BUF_SIZE * 2*NUM_IR_DESC);
- aup->db[0].vaddr = 0;
- }
- if (aup->rx_ring[0]) {
- dma_free((void *)aup->rx_ring[0],
- 2*MAX_NUM_IR_DESC*(sizeof(ring_dest_t)));
- aup->rx_ring[0] = 0;
- }
- rtnl_lock();
- unregister_netdevice(dev);
- rtnl_unlock();
- ir_devs[0] = 0;
- }
- static inline void
- update_tx_stats(struct net_device *dev, u32 status, u32 pkt_len)
- {
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- struct net_device_stats *ps = &aup->stats;
- ps->tx_packets++;
- ps->tx_bytes += pkt_len;
- if (status & IR_TX_ERROR) {
- ps->tx_errors++;
- ps->tx_aborted_errors++;
- }
- }
- static void au1k_tx_ack(struct net_device *dev)
- {
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- volatile ring_dest_t *ptxd;
- ptxd = aup->tx_ring[aup->tx_tail];
- while (!(ptxd->flags & AU_OWN) && (aup->tx_tail != aup->tx_head)) {
- update_tx_stats(dev, ptxd->flags,
- ptxd->count_1<<8 | ptxd->count_0);
- ptxd->count_0 = 0;
- ptxd->count_1 = 0;
- au_sync();
- aup->tx_tail = (aup->tx_tail + 1) & (NUM_IR_DESC - 1);
- ptxd = aup->tx_ring[aup->tx_tail];
- if (aup->tx_full) {
- aup->tx_full = 0;
- netif_wake_queue(dev);
- }
- }
- if (aup->tx_tail == aup->tx_head) {
- if (aup->newspeed) {
- au1k_irda_set_speed(dev, aup->newspeed);
- aup->newspeed = 0;
- }
- else {
- writel(read_ir_reg(IR_CONFIG_1) & ~IR_TX_ENABLE,
- IR_CONFIG_1);
- au_sync();
- writel(read_ir_reg(IR_CONFIG_1) | IR_RX_ENABLE,
- IR_CONFIG_1);
- writel(0, IR_RING_PROMPT);
- au_sync();
- }
- }
- }
- /*
- * Au1000 transmit routine.
- */
- static int au1k_irda_hard_xmit(struct sk_buff *skb, struct net_device *dev)
- {
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- int speed = irda_get_next_speed(skb);
- volatile ring_dest_t *ptxd;
- u32 len;
- u32 flags;
- db_dest_t *pDB;
- if (speed != aup->speed && speed != -1) {
- aup->newspeed = speed;
- }
- if ((skb->len == 0) && (aup->newspeed)) {
- if (aup->tx_tail == aup->tx_head) {
- au1k_irda_set_speed(dev, speed);
- aup->newspeed = 0;
- }
- dev_kfree_skb(skb);
- return 0;
- }
- ptxd = aup->tx_ring[aup->tx_head];
- flags = ptxd->flags;
- if (flags & AU_OWN) {
- printk(KERN_INFO "%s: tx_fulln", dev->name);
- netif_stop_queue(dev);
- aup->tx_full = 1;
- return 1;
- }
- else if (((aup->tx_head + 1) & (NUM_IR_DESC - 1)) == aup->tx_tail) {
- printk(KERN_INFO "%s: tx_fulln", dev->name);
- netif_stop_queue(dev);
- aup->tx_full = 1;
- return 1;
- }
- pDB = aup->tx_db_inuse[aup->tx_head];
- #if 0
- if (read_ir_reg(IR_RX_BYTE_CNT) != 0) {
- printk("tx warning: rx byte cnt %xn",
- read_ir_reg(IR_RX_BYTE_CNT));
- }
- #endif
-
- if (aup->speed == 4000000) {
- /* FIR */
- memcpy((void *)pDB->vaddr, skb->data, skb->len);
- ptxd->count_0 = skb->len & 0xff;
- ptxd->count_1 = (skb->len >> 8) & 0xff;
- }
- else {
- /* SIR */
- len = async_wrap_skb(skb, (u8 *)pDB->vaddr, MAX_BUF_SIZE);
- ptxd->count_0 = len & 0xff;
- ptxd->count_1 = (len >> 8) & 0xff;
- ptxd->flags |= IR_DIS_CRC;
- }
- ptxd->flags |= AU_OWN;
- au_sync();
- writel(read_ir_reg(IR_CONFIG_1) | IR_TX_ENABLE, IR_CONFIG_1);
- writel(0, IR_RING_PROMPT);
- au_sync();
- dev_kfree_skb(skb);
- aup->tx_head = (aup->tx_head + 1) & (NUM_IR_DESC - 1);
- dev->trans_start = jiffies;
- return 0;
- }
- static inline void
- update_rx_stats(struct net_device *dev, u32 status, u32 count)
- {
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- struct net_device_stats *ps = &aup->stats;
- ps->rx_packets++;
- if (status & IR_RX_ERROR) {
- ps->rx_errors++;
- if (status & (IR_PHY_ERROR|IR_FIFO_OVER))
- ps->rx_missed_errors++;
- if (status & IR_MAX_LEN)
- ps->rx_length_errors++;
- if (status & IR_CRC_ERROR)
- ps->rx_crc_errors++;
- }
- else
- ps->rx_bytes += count;
- }
- /*
- * Au1000 receive routine.
- */
- static int au1k_irda_rx(struct net_device *dev)
- {
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- struct sk_buff *skb;
- volatile ring_dest_t *prxd;
- u32 flags, count;
- db_dest_t *pDB;
- prxd = aup->rx_ring[aup->rx_head];
- flags = prxd->flags;
- while (!(flags & AU_OWN)) {
- pDB = aup->rx_db_inuse[aup->rx_head];
- count = prxd->count_1<<8 | prxd->count_0;
- if (!(flags & IR_RX_ERROR)) {
- /* good frame */
- update_rx_stats(dev, flags, count);
- skb=alloc_skb(count+1,GFP_ATOMIC);
- if (skb == NULL) {
- aup->stats.rx_dropped++;
- continue;
- }
- skb_reserve(skb, 1);
- if (aup->speed == 4000000)
- skb_put(skb, count);
- else
- skb_put(skb, count-2);
- memcpy(skb->data, (void *)pDB->vaddr, count-2);
- skb->dev = dev;
- skb->mac.raw = skb->data;
- skb->protocol = htons(ETH_P_IRDA);
- netif_rx(skb);
- prxd->count_0 = 0;
- prxd->count_1 = 0;
- }
- prxd->flags |= AU_OWN;
- aup->rx_head = (aup->rx_head + 1) & (NUM_IR_DESC - 1);
- writel(0, IR_RING_PROMPT);
- au_sync();
- /* next descriptor */
- prxd = aup->rx_ring[aup->rx_head];
- flags = prxd->flags;
- dev->last_rx = jiffies;
- }
- return 0;
- }
- void au1k_irda_interrupt(int irq, void *dev_id, struct pt_regs *regs)
- {
- struct net_device *dev = (struct net_device *) dev_id;
- if (dev == NULL) {
- printk(KERN_ERR "%s: isr: null dev ptrn", dev->name);
- return;
- }
- writel(0, IR_INT_CLEAR); /* ack irda interrupts */
- au1k_irda_rx(dev);
- au1k_tx_ack(dev);
- }
- /*
- * The Tx ring has been full longer than the watchdog timeout
- * value. The transmitter must be hung?
- */
- static void au1k_tx_timeout(struct net_device *dev)
- {
- u32 speed;
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- printk(KERN_ERR "%s: tx timeoutn", dev->name);
- speed = aup->speed;
- aup->speed = 0;
- au1k_irda_set_speed(dev, speed);
- aup->tx_full = 0;
- netif_wake_queue(dev);
- }
- /*
- * Set the IrDA communications speed.
- */
- static int
- au1k_irda_set_speed(struct net_device *dev, int speed)
- {
- unsigned long flags;
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- u32 control;
- int ret = 0, timeout = 10, i;
- volatile ring_dest_t *ptxd;
- if (speed == aup->speed)
- return ret;
- save_flags(flags);
- cli();
- /* disable PHY first */
- writel(read_ir_reg(IR_ENABLE) & ~0x8000, IR_ENABLE);
- /* disable RX/TX */
- writel(read_ir_reg(IR_CONFIG_1) & ~(IR_RX_ENABLE|IR_TX_ENABLE),
- IR_CONFIG_1);
- au_sync_delay(1);
- while (read_ir_reg(IR_ENABLE) & (IR_RX_STATUS | IR_TX_STATUS)) {
- mdelay(1);
- if (!timeout--) {
- printk(KERN_ERR "%s: rx/tx disable timeoutn",
- dev->name);
- break;
- }
- }
- /* disable DMA */
- writel(read_ir_reg(IR_CONFIG_1) & ~IR_DMA_ENABLE, IR_CONFIG_1);
- au_sync_delay(1);
- /*
- * After we disable tx/rx. the index pointers
- * go back to zero.
- */
- aup->tx_head = aup->tx_tail = aup->rx_head = 0;
- for (i=0; i<NUM_IR_DESC; i++) {
- ptxd = aup->tx_ring[i];
- ptxd->flags = 0;
- ptxd->count_0 = 0;
- ptxd->count_1 = 0;
- }
- for (i=0; i<NUM_IR_DESC; i++) {
- ptxd = aup->rx_ring[i];
- ptxd->count_0 = 0;
- ptxd->count_1 = 0;
- ptxd->flags = AU_OWN;
- }
- if (speed == 4000000)
- writel(1<<13, CPLD_AUX1);
- else
- writel(readl(CPLD_AUX1) & ~(1<<13), CPLD_AUX1);
- switch (speed) {
- case 9600:
- writel(11<<10 | 12<<5, IR_WRITE_PHY_CONFIG);
- writel(IR_SIR_MODE, IR_CONFIG_1);
- break;
- case 19200:
- writel(5<<10 | 12<<5, IR_WRITE_PHY_CONFIG);
- writel(IR_SIR_MODE, IR_CONFIG_1);
- break;
- case 38400:
- writel(2<<10 | 12<<5, IR_WRITE_PHY_CONFIG);
- writel(IR_SIR_MODE, IR_CONFIG_1);
- break;
- case 57600:
- writel(1<<10 | 12<<5, IR_WRITE_PHY_CONFIG);
- writel(IR_SIR_MODE, IR_CONFIG_1);
- break;
- case 115200:
- writel(12<<5, IR_WRITE_PHY_CONFIG);
- writel(IR_SIR_MODE, IR_CONFIG_1);
- break;
- case 4000000:
- writel(0xF, IR_WRITE_PHY_CONFIG);
- writel(IR_FIR|IR_DMA_ENABLE|IR_RX_ENABLE, IR_CONFIG_1);
- break;
- default:
- printk(KERN_ERR "%s unsupported speed %xn", dev->name, speed);
- ret = -EINVAL;
- break;
- }
- aup->speed = speed;
- writel(read_ir_reg(IR_ENABLE) | 0x8000, IR_ENABLE);
- au_sync();
- control = read_ir_reg(IR_ENABLE);
- writel(0, IR_RING_PROMPT);
- au_sync();
- if (control & (1<<14)) {
- printk(KERN_ERR "%s: configuration errorn", dev->name);
- }
- else {
- if (control & (1<<11))
- printk(KERN_INFO "%s Valid SIR confign", dev->name);
- if (control & (1<<12))
- printk(KERN_INFO "%s Valid MIR confign", dev->name);
- if (control & (1<<13))
- printk(KERN_INFO "%s Valid FIR confign", dev->name);
- if (control & (1<<10))
- printk(KERN_INFO "%s TX enabledn", dev->name);
- if (control & (1<<9))
- printk(KERN_INFO "%s RX enabledn", dev->name);
- }
- restore_flags(flags);
- return ret;
- }
- static int
- au1k_irda_ioctl(struct net_device *dev, struct ifreq *ifreq, int cmd)
- {
- struct if_irda_req *rq = (struct if_irda_req *)ifreq;
- struct au1k_private *aup = dev->priv;
- int ret = -EOPNOTSUPP;
- switch (cmd) {
- case SIOCSBANDWIDTH:
- if (capable(CAP_NET_ADMIN)) {
- /*
- * We are unable to set the speed if the
- * device is not running.
- */
- if (aup->open)
- ret = au1k_irda_set_speed(dev,
- rq->ifr_baudrate);
- else {
- printk(KERN_ERR "%s ioctl: !netif_runningn",
- dev->name);
- ret = 0;
- }
- }
- break;
- case SIOCSMEDIABUSY:
- ret = -EPERM;
- if (capable(CAP_NET_ADMIN)) {
- irda_device_set_media_busy(dev, TRUE);
- ret = 0;
- }
- break;
- case SIOCGRECEIVING:
- rq->ifr_receiving = 0;
- break;
- default:
- break;
- }
- return ret;
- }
- static struct net_device_stats *au1k_irda_stats(struct net_device *dev)
- {
- struct au1k_private *aup = (struct au1k_private *) dev->priv;
- return &aup->stats;
- }
- #ifdef MODULE
- MODULE_AUTHOR("Pete Popov <ppopov@mvista.com>");
- MODULE_DESCRIPTION("Au1000 IrDA Device Driver");
- module_init(au1k_irda_init);
- module_exit(au1k_irda_exit);
- #endif /* MODULE */