diff options
Diffstat (limited to 'target/linux/ar7-2.6/files/drivers/net/cpmac.c')
| -rw-r--r-- | target/linux/ar7-2.6/files/drivers/net/cpmac.c | 1222 |
1 files changed, 0 insertions, 1222 deletions
diff --git a/target/linux/ar7-2.6/files/drivers/net/cpmac.c b/target/linux/ar7-2.6/files/drivers/net/cpmac.c deleted file mode 100644 index 7d4667708..000000000 --- a/target/linux/ar7-2.6/files/drivers/net/cpmac.c +++ /dev/null @@ -1,1222 +0,0 @@ -/* - * $Id$ - * - * Copyright (C) 2006, 2007 OpenWrt.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/moduleparam.h> - -#include <linux/sched.h> -#include <linux/kernel.h> /* printk() */ -#include <linux/slab.h> -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/delay.h> -#include <linux/version.h> - -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/ethtool.h> -#include <linux/skbuff.h> -#include <linux/mii.h> -#include <linux/phy.h> -#include <linux/platform_device.h> -#include <asm/ar7/ar7.h> -#include <gpio.h> - -MODULE_AUTHOR("Eugene Konev"); -MODULE_DESCRIPTION("TI AR7 ethernet driver (CPMAC)"); -MODULE_LICENSE("GPL"); - -static int rx_ring_size = 64; -static int disable_napi = 0; -module_param(rx_ring_size, int, 64); -module_param(disable_napi, int, 0); -MODULE_PARM_DESC(rx_ring_size, "Size of rx ring (in skbs)"); -MODULE_PARM_DESC(disable_napi, "Disable NAPI polling"); - -/* Register definitions */ -struct cpmac_control_regs { - volatile u32 revision; - volatile u32 control; - volatile u32 teardown; - volatile u32 unused; -} __attribute__ ((packed)); - -struct cpmac_int_regs { - volatile u32 stat_raw; - volatile u32 stat_masked; - volatile u32 enable; - volatile u32 clear; -} __attribute__ ((packed)); - -struct cpmac_stats { - volatile u32 good; - volatile u32 bcast; - volatile u32 mcast; - volatile u32 pause; - volatile u32 crc_error; - volatile u32 align_error; - volatile u32 oversized; - volatile u32 jabber; - volatile u32 undersized; - volatile u32 fragment; - volatile u32 filtered; - volatile u32 qos_filtered; - volatile u32 octets; -} __attribute__ ((packed)); - -struct cpmac_regs { - struct cpmac_control_regs tx_ctrl; - struct cpmac_control_regs rx_ctrl; - volatile u32 unused1[56]; - volatile u32 mbp; -/* MBP bits */ -#define MBP_RXPASSCRC 0x40000000 -#define MBP_RXQOS 0x20000000 -#define MBP_RXNOCHAIN 0x10000000 -#define MBP_RXCMF 0x01000000 -#define MBP_RXSHORT 0x00800000 -#define MBP_RXCEF 0x00400000 -#define MBP_RXPROMISC 0x00200000 -#define MBP_PROMISCCHAN(chan) (((chan) & 0x7) << 16) -#define MBP_RXBCAST 0x00002000 -#define MBP_BCASTCHAN(chan) (((chan) & 0x7) << 8) -#define MBP_RXMCAST 0x00000020 -#define MBP_MCASTCHAN(chan) ((chan) & 0x7) - volatile u32 unicast_enable; - volatile u32 unicast_clear; - volatile u32 max_len; - volatile u32 buffer_offset; - volatile u32 filter_flow_threshold; - volatile u32 unused2[2]; - volatile u32 flow_thre[8]; - volatile u32 free_buffer[8]; - volatile u32 mac_control; -#define MAC_TXPTYPE 0x00000200 -#define MAC_TXPACE 0x00000040 -#define MAC_MII 0x00000020 -#define MAC_TXFLOW 0x00000010 -#define MAC_RXFLOW 0x00000008 -#define MAC_MTEST 0x00000004 -#define MAC_LOOPBACK 0x00000002 -#define MAC_FDX 0x00000001 - volatile u32 mac_status; -#define MACST_QOS 0x4 -#define MACST_RXFLOW 0x2 -#define MACST_TXFLOW 0x1 - volatile u32 emc_control; - volatile u32 unused3; - struct cpmac_int_regs tx_int; - volatile u32 mac_int_vector; -/* Int Status bits */ -#define INTST_STATUS 0x80000 -#define INTST_HOST 0x40000 -#define INTST_RX 0x20000 -#define INTST_TX 0x10000 - volatile u32 mac_eoi_vector; - volatile u32 unused4[2]; - struct cpmac_int_regs rx_int; - volatile u32 mac_int_stat_raw; - volatile u32 mac_int_stat_masked; - volatile u32 mac_int_enable; - volatile u32 mac_int_clear; - volatile u32 mac_addr_low[8]; - volatile u32 mac_addr_mid; - volatile u32 mac_addr_high; - volatile u32 mac_hash_low; - volatile u32 mac_hash_high; - volatile u32 boff_test; - volatile u32 pac_test; - volatile u32 rx_pause; - volatile u32 tx_pause; - volatile u32 unused5[2]; - struct cpmac_stats rx_stats; - struct cpmac_stats tx_stats; - volatile u32 unused6[232]; - volatile u32 tx_ptr[8]; - volatile u32 rx_ptr[8]; - volatile u32 tx_ack[8]; - volatile u32 rx_ack[8]; - -} __attribute__ ((packed)); - -struct cpmac_mdio_regs { - volatile u32 version; - volatile u32 control; -#define MDIOC_IDLE 0x80000000 -#define MDIOC_ENABLE 0x40000000 -#define MDIOC_PREAMBLE 0x00100000 -#define MDIOC_FAULT 0x00080000 -#define MDIOC_FAULTDETECT 0x00040000 -#define MDIOC_INTTEST 0x00020000 -#define MDIOC_CLKDIV(div) ((div) & 0xff) - volatile u32 alive; - volatile u32 link; - struct cpmac_int_regs link_int; - struct cpmac_int_regs user_int; - u32 unused[20]; - volatile u32 access; -#define MDIO_BUSY 0x80000000 -#define MDIO_WRITE 0x40000000 -#define MDIO_REG(reg) (((reg) & 0x1f) << 21) -#define MDIO_PHY(phy) (((phy) & 0x1f) << 16) -#define MDIO_DATA(data) ((data) & 0xffff) - volatile u32 physel; -} __attribute__ ((packed)); - -/* Descriptor */ -struct cpmac_desc { - u32 hw_next; - u32 hw_data; - u16 buflen; - u16 bufflags; - u16 datalen; - u16 dataflags; -/* Flags bits */ -#define CPMAC_SOP 0x8000 -#define CPMAC_EOP 0x4000 -#define CPMAC_OWN 0x2000 -#define CPMAC_EOQ 0x1000 - struct sk_buff *skb; - struct cpmac_desc *next; -} __attribute__ ((packed)); - -struct cpmac_priv { - struct net_device_stats stats; - spinlock_t lock; - struct sk_buff *skb_pool; - int free_skbs; - struct cpmac_desc *rx_head; - int tx_head, tx_tail; - struct cpmac_desc *desc_ring; - struct cpmac_regs *regs; - struct mii_bus *mii_bus; - struct phy_device *phy; - char phy_name[BUS_ID_SIZE]; - struct plat_cpmac_data *config; - int oldlink, oldspeed, oldduplex; - u32 msg_enable; - struct net_device *dev; - struct work_struct alloc_work; -}; - -static irqreturn_t cpmac_irq(int, void *); -static void cpmac_reset(struct net_device *dev); -static void cpmac_hw_init(struct net_device *dev); -static int cpmac_stop(struct net_device *dev); -static int cpmac_open(struct net_device *dev); - -#undef CPMAC_DEBUG -#define CPMAC_LOW_THRESH 32 -#define CPMAC_ALLOC_SIZE 64 -#define CPMAC_SKB_SIZE 1518 -#define CPMAC_TX_RING_SIZE 8 - -#ifdef CPMAC_DEBUG -static void cpmac_dump_regs(u32 *base, int count) -{ - int i; - for (i = 0; i < (count + 3) / 4; i++) { - if (i % 4 == 0) printk("\nCPMAC[0x%04x]:", i * 4); - printk(" 0x%08x", *(base + i)); - } - printk("\n"); -} - -static const char *cpmac_dump_buf(const uint8_t * buf, unsigned size) -{ - static char buffer[3 * 25 + 1]; - char *p = &buffer[0]; - if (size > 20) - size = 20; - while (size-- > 0) { - p += sprintf(p, " %02x", *buf++); - } - return buffer; -} -#endif - -static int cpmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum) -{ - struct cpmac_mdio_regs *regs = (struct cpmac_mdio_regs *)bus->priv; - volatile u32 val; - - while ((val = regs->access) & MDIO_BUSY); - regs->access = MDIO_BUSY | MDIO_REG(regnum & 0x1f) | - MDIO_PHY(phy_id & 0x1f); - while ((val = regs->access) & MDIO_BUSY); - - return val & 0xffff; -} - -static int cpmac_mdio_write(struct mii_bus *bus, int phy_id, int regnum, u16 val) -{ - struct cpmac_mdio_regs *regs = (struct cpmac_mdio_regs *)bus->priv; - volatile u32 tmp; - - while ((tmp = regs->access) & MDIO_BUSY); - regs->access = MDIO_BUSY | MDIO_WRITE | - MDIO_REG(regnum & 0x1f) | MDIO_PHY(phy_id & 0x1f) | - val; - - return 0; -} - -static int cpmac_mdio_reset(struct mii_bus *bus) -{ - struct cpmac_mdio_regs *regs = (struct cpmac_mdio_regs *)bus->priv; - - ar7_device_reset(AR7_RESET_BIT_MDIO); - regs->control = MDIOC_ENABLE | - MDIOC_CLKDIV(ar7_cpmac_freq() / 2200000 - 1); - - return 0; -} - -static int mii_irqs[PHY_MAX_ADDR] = { PHY_POLL, }; - -static struct mii_bus cpmac_mii = { - .name = "cpmac-mii", - .read = cpmac_mdio_read, - .write = cpmac_mdio_write, - .reset = cpmac_mdio_reset, - .irq = mii_irqs, -}; - -static int cpmac_config(struct net_device *dev, struct ifmap *map) -{ - if (dev->flags & IFF_UP) - return -EBUSY; - - /* Don't allow changing the I/O address */ - if (map->base_addr != dev->base_addr) - return -EOPNOTSUPP; - - /* ignore other fields */ - return 0; -} - -static int cpmac_set_mac_address(struct net_device *dev, void *addr) -{ - struct sockaddr *sa = addr; - - if (dev->flags & IFF_UP) - return -EBUSY; - - memcpy(dev->dev_addr, sa->sa_data, dev->addr_len); - - return 0; -} - -static void cpmac_set_multicast_list(struct net_device *dev) -{ - struct dev_mc_list *iter; - int i; - int hash, tmp; - int hashlo = 0, hashhi = 0; - struct cpmac_priv *priv = netdev_priv(dev); - - if(dev->flags & IFF_PROMISC) { - priv->regs->mbp &= ~MBP_PROMISCCHAN(0); /* promisc channel 0 */ - priv->regs->mbp |= MBP_RXPROMISC; - } else { - priv->regs->mbp &= ~MBP_RXPROMISC; - if(dev->flags & IFF_ALLMULTI) { - /* enable all multicast mode */ - priv->regs->mac_hash_low = 0xffffffff; - priv->regs->mac_hash_high = 0xffffffff; - } else { - for(i = 0, iter = dev->mc_list; i < dev->mc_count; - i++, iter = iter->next) { - hash = 0; - tmp = iter->dmi_addr[0]; - hash ^= (tmp >> 2) ^ (tmp << 4); - tmp = iter->dmi_addr[1]; - hash ^= (tmp >> 4) ^ (tmp << 2); - tmp = iter->dmi_addr[2]; - hash ^= (tmp >> 6) ^ tmp; - tmp = iter->dmi_addr[4]; - hash ^= (tmp >> 2) ^ (tmp << 4); - tmp = iter->dmi_addr[5]; - hash ^= (tmp >> 4) ^ (tmp << 2); - tmp = iter->dmi_addr[6]; - hash ^= (tmp >> 6) ^ tmp; - hash &= 0x3f; - if(hash < 32) { - hashlo |= 1<<hash; - } else { - hashhi |= 1<<(hash - 32); - } - } - - priv->regs->mac_hash_low = hashlo; - priv->regs->mac_hash_high = hashhi; - } - } -} - -static struct sk_buff *cpmac_get_skb(struct net_device *dev) -{ - struct sk_buff *skb; - struct cpmac_priv *priv = netdev_priv(dev); - - skb = priv->skb_pool; - if (likely(skb)) { - priv->skb_pool = skb->next; - } else { - skb = dev_alloc_skb(CPMAC_SKB_SIZE + 2); - if (skb) { - skb->next = NULL; - skb_reserve(skb, 2); - skb->dev = priv->dev; - } - } - - if (likely(priv->free_skbs)) - priv->free_skbs--; - - if (priv->free_skbs < CPMAC_LOW_THRESH) - schedule_work(&priv->alloc_work); - - return skb; -} - -static inline struct sk_buff *cpmac_rx_one(struct net_device *dev, - struct cpmac_priv *priv, - struct cpmac_desc *desc) -{ - unsigned long flags; - char *data; - struct sk_buff *skb, *result = NULL; - - priv->regs->rx_ack[0] = virt_to_phys(desc); - if (unlikely(!desc->datalen)) { - if (printk_ratelimit()) - printk(KERN_WARNING "%s: rx: spurious interrupt\n", - dev->name); - priv->stats.rx_errors++; - return NULL; - } - - spin_lock_irqsave(&priv->lock, flags); - skb = cpmac_get_skb(dev); - if (likely(skb)) { - data = (char *)phys_to_virt(desc->hw_data); - dma_cache_inv((u32)data, desc->datalen); - skb_put(desc->skb, desc->datalen); - desc->skb->protocol = eth_type_trans(desc->skb, dev); - desc->skb->ip_summed = CHECKSUM_NONE; - priv->stats.rx_packets++; - priv->stats.rx_bytes += desc->datalen; - result = desc->skb; - desc->skb = skb; - } else { -#ifdef CPMAC_DEBUG - if (printk_ratelimit()) - printk("%s: low on skbs, dropping packet\n", - dev->name); -#endif - priv->stats.rx_dropped++; - } - spin_unlock_irqrestore(&priv->lock, flags); - - desc->hw_data = virt_to_phys(desc->skb->data); - desc->buflen = CPMAC_SKB_SIZE; - desc->dataflags = CPMAC_OWN; - dma_cache_wback((u32)desc, 16); - - return result; -} - -static void cpmac_rx(struct net_device *dev) -{ - struct sk_buff *skb; - struct cpmac_desc *desc; - struct cpmac_priv *priv = netdev_priv(dev); - - spin_lock(&priv->lock); - if (unlikely(!priv->rx_head)) { - spin_unlock(&priv->lock); - return; - } - - desc = priv->rx_head; - dma_cache_inv((u32)desc, 16); -#ifdef CPMAC_DEBUG - printk(KERN_DEBUG "%s: len=%d, %s\n", __func__, pkt->datalen, - cpmac_dump_buf(data, pkt->datalen)); -#endif - - while ((desc->dataflags & CPMAC_OWN) == 0) { - skb = cpmac_rx_one(dev, priv, desc); - if (likely(skb)) { - netif_rx(skb); - } - desc = desc->next; - dma_cache_inv((u32)desc, 16); - } - - priv->rx_head = desc; - priv->regs->rx_ptr[0] = virt_to_phys(desc); - spin_unlock(&priv->lock); -} - -static int cpmac_poll(struct net_device *dev, int *budget) -{ - struct sk_buff *skb; - struct cpmac_desc *desc; - int received = 0, quota = min(dev->quota, *budget); - struct cpmac_priv *priv = netdev_priv(dev); - - if (unlikely(!priv->rx_head)) { - if (printk_ratelimit()) - printk(KERN_WARNING "%s: rx: polling, but no queue\n", - dev->name); - netif_rx_complete(dev); - return 0; - } - - desc = priv->rx_head; - dma_cache_inv((u32)desc, 16); - - while ((received < quota) && ((desc->dataflags & CPMAC_OWN) == 0)) { - skb = cpmac_rx_one(dev, priv, desc); - if (likely(skb)) { - netif_receive_skb(skb); - received++; - } - desc = desc->next; - priv->rx_head = desc; - dma_cache_inv((u32)desc, 16); - } - - *budget -= received; - dev->quota -= received; -#ifdef CPMAC_DEBUG - printk("%s: processed %d packets\n", dev->name, received); -#endif - if (desc->dataflags & CPMAC_OWN) { - priv->regs->rx_ptr[0] = virt_to_phys(desc); - netif_rx_complete(dev); - priv->regs->rx_int.enable = 0x1; - priv->regs->rx_int.clear = 0xfe; - return 0; - } - - return 1; -} - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20) -static void -cpmac_alloc_skbs(struct work_struct *work) -{ - struct cpmac_priv *priv = container_of(work, struct cpmac_priv, - alloc_work); -#else -static void -cpmac_alloc_skbs(void *data) -{ - struct net_device *dev = (struct net_device*)data; - struct cpmac_priv *priv = netdev_priv(dev); -#endif - unsigned long flags; - int i, num_skbs = 0; - struct sk_buff *skb, *skbs = NULL; - - for (i = 0; i < CPMAC_ALLOC_SIZE; i++) { - skb = alloc_skb(CPMAC_SKB_SIZE + 2, GFP_KERNEL); - if (!skb) - break; - skb->next = skbs; - skb_reserve(skb, 2); - skb->dev = priv->dev; - num_skbs++; - skbs = skb; - } - - if (skbs) { - spin_lock_irqsave(&priv->lock, flags); - for (skb = priv->skb_pool; skb && skb->next; skb = skb->next); - if (!skb) { - priv->skb_pool = skbs; - } else { - skb->next = skbs; - } - priv->free_skbs += num_skbs; - spin_unlock_irqrestore(&priv->lock, flags); -#ifdef CPMAC_DEBUG - printk("%s: allocated %d skbs\n", priv->dev->name, num_skbs); -#endif - } -} - -static int cpmac_start_xmit(struct sk_buff *skb, struct net_device *dev) -{ - unsigned long flags; - int len, chan; - struct cpmac_desc *desc; - struct cpmac_priv *priv = netdev_priv(dev); - - len = skb->len; -#ifdef CPMAC_DEBUG - printk(KERN_DEBUG "%s: len=%d\n", __func__, len); //cpmac_dump_buf(const uint8_t * buf, unsigned size) -#endif - if (unlikely(len < ETH_ZLEN)) { - if (unlikely(skb_padto(skb, ETH_ZLEN))) { - if (printk_ratelimit()) - printk(KERN_NOTICE "%s: padding failed, dropping\n", - dev->name); - spin_lock_irqsave(&priv->lock, flags); - priv->stats.tx_dropped++; - spin_unlock_irqrestore(&priv->lock, flags); - return -ENOMEM; - } - len = ETH_ZLEN; - } - spin_lock_irqsave(&priv->lock, flags); - chan = priv->tx_tail++; - priv->tx_tail %= 8; - if (priv->tx_tail == priv->tx_head) - netif_stop_queue(dev); - - desc = &priv->desc_ring[chan]; - dma_cache_inv((u32)desc, 16); - if (desc->dataflags & CPMAC_OWN) { - printk(KERN_NOTICE "%s: tx dma ring full, dropping\n", dev->name); - priv->stats.tx_dropped++; - spin_unlock_irqrestore(&priv->lock, flags); - return -ENOMEM; - } - - dev->trans_start = jiffies; - desc->dataflags = CPMAC_SOP | CPMAC_EOP | CPMAC_OWN; - desc->skb = skb; - desc->hw_data = virt_to_phys(skb->data); - dma_cache_wback((u32)skb->data, len); - desc->buflen = len; - desc->datalen = len; - desc->hw_next = 0; - dma_cache_wback((u32)desc, 16); - priv->regs->tx_ptr[chan] = virt_to_phys(desc); - spin_unlock_irqrestore(&priv->lock, flags); - - return 0; -} - -static void cpmac_end_xmit(struct net_device *dev, int channel) -{ - struct cpmac_desc *desc; - struct cpmac_priv *priv = netdev_priv(dev); - - spin_lock(&priv->lock); - desc = &priv->desc_ring[channel]; - priv->regs->tx_ack[channel] = virt_to_phys(desc); - if (likely(desc->skb)) { - priv->stats.tx_packets++; - priv->stats.tx_bytes += desc->skb->len; - dev_kfree_skb_irq(desc->skb); - if (netif_queue_stopped(dev)) - netif_wake_queue(dev); - } else { - if (printk_ratelimit()) - printk(KERN_NOTICE "%s: end_xmit: spurious interrupt\n", - dev->name); - } - spin_unlock(&priv->lock); -} - -static void cpmac_reset(struct net_device *dev) -{ - int i; - struct cpmac_priv *priv = netdev_priv(dev); - - ar7_device_reset(priv->config->reset_bit); - priv->regs->rx_ctrl.control &= ~1; - priv->regs->tx_ctrl.control &= ~1; - for (i = 0; i < 8; i++) { - priv->regs->tx_ptr[i] = 0; - priv->regs->rx_ptr[i] = 0; - } - priv->regs->mac_control &= ~MAC_MII; /* disable mii */ -} - -static inline void cpmac_free_rx_ring(struct net_device *dev) -{ - struct cpmac_desc *desc; - int i; - struct cpmac_priv *priv = netdev_priv(dev); - - if (unlikely(!priv->rx_head)) - return; - - desc = priv->rx_head; - dma_cache_inv((u32)desc, 16); - - for (i = 0; i < rx_ring_size; i++) { - desc->buflen = CPMAC_SKB_SIZE; - if ((desc->dataflags & CPMAC_OWN) == 0) { - desc->dataflags = CPMAC_OWN; - priv->stats.rx_dropped++; - } - dma_cache_wback((u32)desc, 16); - desc = desc->next; - dma_cache_inv((u32)desc, 16); - } -} - -static irqreturn_t cpmac_irq(int irq, void *dev_id) -{ - struct net_device *dev = (struct net_device *)dev_id; - struct cpmac_priv *priv = netdev_priv(dev); - u32 status; - - if (!dev) - return IRQ_NONE; - - status = priv->regs->mac_int_vector; - - if (status & INTST_TX) { - cpmac_end_xmit(dev, (status & 7)); - } - - if (status & INTST_RX) { - if (disable_napi) { - cpmac_rx(dev); - } else { - priv->regs->rx_int.enable = 0; - priv->regs->rx_int.clear = 0xff; - netif_rx_schedule(dev); - } - } - - priv->regs->mac_eoi_vector = 0; - - if (unlikely(status & (INTST_HOST | INTST_STATUS))) { - if (printk_ratelimit()) { - printk(KERN_ERR "%s: hw error, resetting...\n", dev->name); - } - spin_lock(&priv->lock); - phy_stop(priv->phy); - cpmac_reset(dev); - cpmac_free_rx_ring(dev); - cpmac_hw_init(dev); - spin_unlock(&priv->lock); - } - - return IRQ_HANDLED; -} - -static void cpmac_tx_timeout(struct net_device *dev) -{ - struct cpmac_priv *priv = netdev_priv(dev); - struct cpmac_desc *desc; - - priv->stats.tx_errors++; - desc = &priv->desc_ring[priv->tx_head++]; - priv->tx_head %= 8; - printk("%s: transmit timeout\n", dev->name); - if (desc->skb) - dev_kfree_skb(desc->skb); - netif_wake_queue(dev); -} - -static int cpmac_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - struct cpmac_priv *priv = netdev_priv(dev); - if (!(netif_running(dev))) - return -EINVAL; - if (!priv->phy) - return -EINVAL; - if ((cmd == SIOCGMIIPHY) || (cmd == SIOCGMIIREG) || - (cmd == SIOCSMIIREG)) - return phy_mii_ioctl(priv->phy, if_mii(ifr), cmd); - - return -EINVAL; -} - -static int cpmac_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct cpmac_priv *priv = netdev_priv(dev); - - if (priv->phy) - return phy_ethtool_gset(priv->phy, cmd); - - return -EINVAL; -} - -static int cpmac_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) -{ - struct cpmac_priv *priv = netdev_priv(dev); - - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - - if (priv->phy) - return phy_ethtool_sset(priv->phy, cmd); - - return -EINVAL; -} - -static void cpmac_get_drvinfo(struct net_device *dev, - struct ethtool_drvinfo *info) -{ - strcpy(info->driver, "cpmac"); - strcpy(info->version, "0.0.3"); - info->fw_version[0] = '\0'; - sprintf(info->bus_info, "%s", "cpmac"); - info->regdump_len = 0; -} - -static const struct ethtool_ops cpmac_ethtool_ops = { - .get_settings = cpmac_get_settings, - .set_settings = cpmac_set_settings, - .get_drvinfo = cpmac_get_drvinfo, - .get_link = ethtool_op_get_link, -}; - -static struct net_device_stats *cpmac_stats(struct net_device *dev) -{ - struct cpmac_priv *priv = netdev_priv(dev); - - if (netif_device_present(dev)) - return &priv->stats; - - return NULL; -} - -static int cpmac_change_mtu(struct net_device *dev, int mtu) -{ - unsigned long flags; - struct cpmac_priv *priv = netdev_priv(dev); - spinlock_t *lock = &priv->lock; - - if ((mtu < 68) || (mtu > 1500)) - return -EINVAL; - - spin_lock_irqsave(lock, flags); - dev->mtu = mtu; - spin_unlock_irqrestore(lock, flags); - - return 0; -} - -static void cpmac_adjust_link(struct net_device *dev) -{ - struct cpmac_priv *priv = netdev_priv(dev); - unsigned long flags; - int new_state = 0; - - spin_lock_irqsave(&priv->lock, flags); - if (priv->phy->link) { - if (priv->phy->duplex != priv->oldduplex) { - new_state = 1; - priv->oldduplex = priv->phy->duplex; - } - - if (priv->phy->speed != priv->oldspeed) { - new_state = 1; - priv->oldspeed = priv->phy->speed; - } - - if (!priv->oldlink) { - new_state = 1; - priv->oldlink = 1; - netif_schedule(dev); - } - } else if (priv->oldlink) { - new_state = 1; - priv->oldlink = 0; - priv->oldspeed = 0; - priv->oldduplex = -1; - } - - if (new_state) - phy_print_status(priv->phy); - - spin_unlock_irqrestore(&priv->lock, flags); -} - -static void cpmac_hw_init(struct net_device *dev) -{ - int i; - struct cpmac_priv *priv = netdev_priv(dev); - - for (i = 0; i < 8; i++) - priv->regs->tx_ptr[i] = 0; - priv->regs->rx_ptr[0] = virt_to_phys(priv->rx_head); - - priv->regs->mbp = MBP_RXSHORT | MBP_RXBCAST | MBP_RXMCAST; - priv->regs->unicast_enable = 0x1; - priv->regs->unicast_clear = 0xfe; - priv->regs->buffer_offset = 0; - for (i = 0; i < 8; i++) - priv->regs->mac_addr_low[i] = dev->dev_addr[5]; - priv->regs->mac_addr_mid = dev->dev_addr[4]; - priv->regs->mac_addr_high = dev->dev_addr[0] | (dev->dev_addr[1] << 8) - | (dev->dev_addr[2] << 16) | (dev->dev_addr[3] << 24); - priv->regs->max_len = CPMAC_SKB_SIZE; - priv->regs->rx_int.enable = 0x1; - priv->regs->rx_int.clear = 0xfe; - priv->regs->tx_int.enable = 0xff; - priv->regs->tx_int.clear = 0; - priv->regs->mac_int_enable = 3; - priv->regs->mac_int_clear = 0xfc; - - priv->regs->rx_ctrl.control |= 1; - priv->regs->tx_ctrl.control |= 1; - priv->regs->mac_control |= MAC_MII | MAC_FDX; - - priv->phy->state = PHY_CHANGELINK; - phy_start(priv->phy); -} - -static int cpmac_open(struct net_device *dev) -{ - int i, size, res; - struct cpmac_priv *priv = netdev_priv(dev); - struct cpmac_desc *desc; - struct sk_buff *skb; - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20) - priv->phy = phy_connect(dev, priv->phy_name, &cpmac_adjust_link, - 0, PHY_INTERFACE_MODE_MII); -#else - priv->phy = phy_connect(dev, priv->phy_name, &cpmac_adjust_link, 0); -#endif - if (IS_ERR(priv->phy)) { - printk(KERN_ERR "%s: Could not attach to PHY\n", dev->name); - return PTR_ERR(priv->phy); - } - - if (!request_mem_region(dev->mem_start, dev->mem_end - - dev->mem_start, dev->name)) { - printk("%s: failed to request registers\n", - dev->name); - res = -ENXIO; - goto fail_reserve; - } - - priv->regs = ioremap_nocache(dev->mem_start, dev->mem_end - - dev->mem_start); - if (!priv->regs) { - printk("%s: failed to remap registers\n", dev->name); - res = -ENXIO; - goto fail_remap; - } - - priv->rx_head = NULL; - size = sizeof(struct cpmac_desc) * (rx_ring_size + - CPMAC_TX_RING_SIZE); - priv->desc_ring = (struct cpmac_desc *)kmalloc(size, GFP_KERNEL); - if (!priv->desc_ring) { - res = -ENOMEM; - goto fail_alloc; - } - - memset((char *)priv->desc_ring, 0, size); - - priv->skb_pool = NULL; - priv->free_skbs = 0; - priv->rx_head = &priv->desc_ring[CPMAC_TX_RING_SIZE]; - -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20) - INIT_WORK(&priv->alloc_work, cpmac_alloc_skbs); -#else - INIT_WORK(&priv->alloc_work, cpmac_alloc_skbs, dev); -#endif - schedule_work(&priv->alloc_work); - flush_scheduled_work(); - - for (i = 0; i < rx_ring_size; i++) { - desc = &priv->rx_head[i]; - skb = cpmac_get_skb(dev); - if (!skb) { - res = -ENOMEM; - goto fail_desc; - } - desc->skb = skb; - desc->hw_data = virt_to_phys(skb->data); - desc->buflen = CPMAC_SKB_SIZE; - desc->dataflags = CPMAC_OWN; - desc->next = &priv->rx_head[(i + 1) % rx_ring_size]; - desc->hw_next = virt_to_phys(desc->next); - dma_cache_wback((u32)desc, 16); - } - - if((res = request_irq(dev->irq, cpmac_irq, SA_INTERRUPT, - dev->name, dev))) { - printk("%s: failed to obtain irq\n", dev->name); - goto fail_irq; - } - - cpmac_reset(dev); - cpmac_hw_init(dev); - - netif_start_queue(dev); - return 0; - -fail_irq: -fail_desc: - for (i = 0; i < rx_ring_size; i++) - if (priv->rx_head[i].skb) - kfree_skb(priv->rx_head[i].skb); -fail_alloc: - kfree(priv->desc_ring); - - for (skb = priv->skb_pool; skb; skb = priv->skb_pool) { - priv->skb_pool = skb->next; - kfree_skb(skb); - } - - iounmap(priv->regs); - -fail_remap: - release_mem_region(dev->mem_start, dev->mem_end - - dev->mem_start); - -fail_reserve: - phy_disconnect(priv->phy); - - return res; -} - -static int cpmac_stop(struct net_device *dev) -{ - int i; - struct sk_buff *skb; - struct cpmac_priv *priv = netdev_priv(dev); - - netif_stop_queue(dev); - - phy_stop(priv->phy); - phy_disconnect(priv->phy); - priv->phy = NULL; - - cpmac_reset(dev); - - for (i = 0; i < 8; i++) { - priv->regs->rx_ptr[i] = 0; - priv->regs->tx_ptr[i] = 0; - priv->regs->mbp = 0; - } - - free_irq(dev->irq, dev); - release_mem_region(dev->mem_start, dev->mem_end - - dev->mem_start); - - cancel_delayed_work(&priv->alloc_work); - flush_scheduled_work(); - - priv->rx_head = &priv->desc_ring[CPMAC_TX_RING_SIZE]; - for (i = 0; i < rx_ring_size; i++) - if (priv->rx_head[i].skb) - kfree_skb(priv->rx_head[i].skb); - - kfree(priv->desc_ring); - - for (skb = priv->skb_pool; skb; skb = priv->skb_pool) { - priv->skb_pool = skb->next; - kfree_skb(skb); - } - - return 0; -} - -static int external_switch = 0; - -static int __devinit cpmac_probe(struct platform_device *pdev) -{ - int i, rc, phy_id; - struct resource *res; - struct cpmac_priv *priv; - struct net_device *dev; - struct plat_cpmac_data *pdata; - - if (strcmp(pdev->name, "cpmac") != 0) - return -ENODEV; - - pdata = pdev->dev.platform_data; - - for (phy_id = 0; phy_id < PHY_MAX_ADDR; phy_id++) { - if (!(pdata->phy_mask & (1 << phy_id))) - continue; - if (!cpmac_mii.phy_map[phy_id]) - continue; - break; - } - - if (phy_id == PHY_MAX_ADDR) { - if (external_switch) { - phy_id = 0; - } else { - printk("cpmac: no PHY present\n"); - return -ENODEV; - } - } - - dev = alloc_etherdev(sizeof(struct cpmac_priv)); - - if (!dev) { - printk(KERN_ERR "cpmac: Unable to allocate net_device structure!\n"); - return -ENOMEM; - } - - SET_MODULE_OWNER(dev); - platform_set_drvdata(pdev, dev); - priv = netdev_priv(dev); - - res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs"); - if (!res) { - rc = -ENODEV; - goto fail; - } - - dev->mem_start = res->start; - dev->mem_end = res->end; - dev->irq = platform_get_irq_byname(pdev, "irq"); - - dev->mtu = 1500; - dev->open = cpmac_open; - dev->stop = cpmac_stop; - dev->set_config = cpmac_config; - dev->hard_start_xmit = cpmac_start_xmit; - dev->do_ioctl = cpmac_ioctl; - dev->get_stats = cpmac_stats; - dev->change_mtu = cpmac_change_mtu; - dev->set_mac_address = cpmac_set_mac_address; - dev->set_multicast_list = cpmac_set_multicast_list; - dev->tx_timeout = cpmac_tx_timeout; - dev->ethtool_ops = &cpmac_ethtool_ops; - if (!disable_napi) { - dev->poll = cpmac_poll; - dev->weight = min(rx_ring_size, 64); - } - - memset(priv, 0, sizeof(struct cpmac_priv)); - spin_lock_init(&priv->lock); - priv->msg_enable = netif_msg_init(NETIF_MSG_WOL, 0x3fff); - priv->config = pdata; - priv->dev = dev; - memcpy(dev->dev_addr, priv->config->dev_addr, sizeof(dev->dev_addr)); - if (phy_id == 31) { - snprintf(priv->phy_name, BUS_ID_SIZE, PHY_ID_FMT, - cpmac_mii.id, phy_id); - } else { - snprintf(priv->phy_name, BUS_ID_SIZE, "fixed@%d:%d", 100, 1); - } - - if ((rc = register_netdev(dev))) { - printk("cpmac: error %i registering device %s\n", - rc, dev->name); - goto fail; - } - - printk("cpmac: device %s (regs: %p, irq: %d, phy: %s, mac: ", - dev->name, (u32 *)dev->mem_start, dev->irq, - priv->phy_name); - for (i = 0; i < 6; i++) { - printk("%02x", dev->dev_addr[i]); - if (i < 5) printk(":"); - else printk(")\n"); - } - - return 0; - -fail: - free_netdev(dev); - return rc; -} - -static int __devexit cpmac_remove(struct platform_device *pdev) -{ - struct net_device *dev = platform_get_drvdata(pdev); - unregister_netdev(dev); - free_netdev(dev); - return 0; -} - -static struct platform_driver cpmac_driver = { - .driver.name = "cpmac", - .probe = cpmac_probe, - .remove = cpmac_remove, -}; - -int __devinit cpmac_init(void) -{ - volatile u32 mask; - int i, res; - cpmac_mii.priv = (struct cpmac_mdio_regs *) - ioremap_nocache(AR7_REGS_MDIO, sizeof(struct cpmac_mdio_regs)); - - if (!cpmac_mii.priv) { - printk("Can't ioremap mdio registers\n"); - return -ENXIO; - } - -#warning FIXME: unhardcode gpio&reset bits - ar7_gpio_disable(26); - ar7_gpio_disable(27); - ar7_device_reset(AR7_RESET_BIT_CPMAC_LO); - ar7_device_reset(AR7_RESET_BIT_CPMAC_HI); - ar7_device_reset(AR7_RESET_BIT_EPHY); - - cpmac_mii.reset(&cpmac_mii); - - for (i = 0; i < 300000; i++) { - mask = ((struct cpmac_mdio_regs *)cpmac_mii.priv)->alive; - if (mask) - break; - } - - mask &= 0x7fffffff; - if (mask & (mask - 1)) { - external_switch = 1; - mask = 0; - } - - cpmac_mii.phy_mask = ~(mask | 0x80000000); - - res = mdiobus_register(&cpmac_mii); - if (res) - goto fail_mii; - - res = platform_driver_register(&cpmac_driver); - if (res) - goto fail_cpmac; - - return 0; - -fail_cpmac: - mdiobus_unregister(&cpmac_mii); - -fail_mii: - iounmap(cpmac_mii.priv); - - return res; -} - -void __devexit cpmac_exit(void) -{ - platform_driver_unregister(&cpmac_driver); - mdiobus_unregister(&cpmac_mii); -} - -module_init(cpmac_init); -module_exit(cpmac_exit); |