| /* |
| * Copyright (c) 2005 Ammasso, Inc. All rights reserved. |
| * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/pci.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/inetdevice.h> |
| #include <linux/delay.h> |
| #include <linux/ethtool.h> |
| #include <linux/mii.h> |
| #include <linux/if_vlan.h> |
| #include <linux/crc32.h> |
| #include <linux/in.h> |
| #include <linux/ip.h> |
| #include <linux/tcp.h> |
| #include <linux/init.h> |
| #include <linux/dma-mapping.h> |
| |
| #include <asm/io.h> |
| #include <asm/irq.h> |
| #include <asm/byteorder.h> |
| |
| #include <rdma/ib_smi.h> |
| #include "c2.h" |
| #include "c2_provider.h" |
| |
| MODULE_AUTHOR("Tom Tucker <tom@opengridcomputing.com>"); |
| MODULE_DESCRIPTION("Ammasso AMSO1100 Low-level iWARP Driver"); |
| MODULE_LICENSE("Dual BSD/GPL"); |
| MODULE_VERSION(DRV_VERSION); |
| |
| static const u32 default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK |
| | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN; |
| |
| static int debug = -1; /* defaults above */ |
| module_param(debug, int, 0); |
| MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); |
| |
| static int c2_up(struct net_device *netdev); |
| static int c2_down(struct net_device *netdev); |
| static int c2_xmit_frame(struct sk_buff *skb, struct net_device *netdev); |
| static void c2_tx_interrupt(struct net_device *netdev); |
| static void c2_rx_interrupt(struct net_device *netdev); |
| static irqreturn_t c2_interrupt(int irq, void *dev_id); |
| static void c2_tx_timeout(struct net_device *netdev); |
| static int c2_change_mtu(struct net_device *netdev, int new_mtu); |
| static void c2_reset(struct c2_port *c2_port); |
| |
| static struct pci_device_id c2_pci_table[] = { |
| { PCI_DEVICE(0x18b8, 0xb001) }, |
| { 0 } |
| }; |
| |
| MODULE_DEVICE_TABLE(pci, c2_pci_table); |
| |
| static void c2_print_macaddr(struct net_device *netdev) |
| { |
| pr_debug("%s: MAC %02X:%02X:%02X:%02X:%02X:%02X, " |
| "IRQ %u\n", netdev->name, |
| netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2], |
| netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5], |
| netdev->irq); |
| } |
| |
| static void c2_set_rxbufsize(struct c2_port *c2_port) |
| { |
| struct net_device *netdev = c2_port->netdev; |
| |
| if (netdev->mtu > RX_BUF_SIZE) |
| c2_port->rx_buf_size = |
| netdev->mtu + ETH_HLEN + sizeof(struct c2_rxp_hdr) + |
| NET_IP_ALIGN; |
| else |
| c2_port->rx_buf_size = sizeof(struct c2_rxp_hdr) + RX_BUF_SIZE; |
| } |
| |
| /* |
| * Allocate TX ring elements and chain them together. |
| * One-to-one association of adapter descriptors with ring elements. |
| */ |
| static int c2_tx_ring_alloc(struct c2_ring *tx_ring, void *vaddr, |
| dma_addr_t base, void __iomem * mmio_txp_ring) |
| { |
| struct c2_tx_desc *tx_desc; |
| struct c2_txp_desc __iomem *txp_desc; |
| struct c2_element *elem; |
| int i; |
| |
| tx_ring->start = kmalloc(sizeof(*elem) * tx_ring->count, GFP_KERNEL); |
| if (!tx_ring->start) |
| return -ENOMEM; |
| |
| elem = tx_ring->start; |
| tx_desc = vaddr; |
| txp_desc = mmio_txp_ring; |
| for (i = 0; i < tx_ring->count; i++, elem++, tx_desc++, txp_desc++) { |
| tx_desc->len = 0; |
| tx_desc->status = 0; |
| |
| /* Set TXP_HTXD_UNINIT */ |
| __raw_writeq((__force u64) cpu_to_be64(0x1122334455667788ULL), |
| (void __iomem *) txp_desc + C2_TXP_ADDR); |
| __raw_writew(0, (void __iomem *) txp_desc + C2_TXP_LEN); |
| __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_UNINIT), |
| (void __iomem *) txp_desc + C2_TXP_FLAGS); |
| |
| elem->skb = NULL; |
| elem->ht_desc = tx_desc; |
| elem->hw_desc = txp_desc; |
| |
| if (i == tx_ring->count - 1) { |
| elem->next = tx_ring->start; |
| tx_desc->next_offset = base; |
| } else { |
| elem->next = elem + 1; |
| tx_desc->next_offset = |
| base + (i + 1) * sizeof(*tx_desc); |
| } |
| } |
| |
| tx_ring->to_use = tx_ring->to_clean = tx_ring->start; |
| |
| return 0; |
| } |
| |
| /* |
| * Allocate RX ring elements and chain them together. |
| * One-to-one association of adapter descriptors with ring elements. |
| */ |
| static int c2_rx_ring_alloc(struct c2_ring *rx_ring, void *vaddr, |
| dma_addr_t base, void __iomem * mmio_rxp_ring) |
| { |
| struct c2_rx_desc *rx_desc; |
| struct c2_rxp_desc __iomem *rxp_desc; |
| struct c2_element *elem; |
| int i; |
| |
| rx_ring->start = kmalloc(sizeof(*elem) * rx_ring->count, GFP_KERNEL); |
| if (!rx_ring->start) |
| return -ENOMEM; |
| |
| elem = rx_ring->start; |
| rx_desc = vaddr; |
| rxp_desc = mmio_rxp_ring; |
| for (i = 0; i < rx_ring->count; i++, elem++, rx_desc++, rxp_desc++) { |
| rx_desc->len = 0; |
| rx_desc->status = 0; |
| |
| /* Set RXP_HRXD_UNINIT */ |
| __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_OK), |
| (void __iomem *) rxp_desc + C2_RXP_STATUS); |
| __raw_writew(0, (void __iomem *) rxp_desc + C2_RXP_COUNT); |
| __raw_writew(0, (void __iomem *) rxp_desc + C2_RXP_LEN); |
| __raw_writeq((__force u64) cpu_to_be64(0x99aabbccddeeffULL), |
| (void __iomem *) rxp_desc + C2_RXP_ADDR); |
| __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_UNINIT), |
| (void __iomem *) rxp_desc + C2_RXP_FLAGS); |
| |
| elem->skb = NULL; |
| elem->ht_desc = rx_desc; |
| elem->hw_desc = rxp_desc; |
| |
| if (i == rx_ring->count - 1) { |
| elem->next = rx_ring->start; |
| rx_desc->next_offset = base; |
| } else { |
| elem->next = elem + 1; |
| rx_desc->next_offset = |
| base + (i + 1) * sizeof(*rx_desc); |
| } |
| } |
| |
| rx_ring->to_use = rx_ring->to_clean = rx_ring->start; |
| |
| return 0; |
| } |
| |
| /* Setup buffer for receiving */ |
| static inline int c2_rx_alloc(struct c2_port *c2_port, struct c2_element *elem) |
| { |
| struct c2_dev *c2dev = c2_port->c2dev; |
| struct c2_rx_desc *rx_desc = elem->ht_desc; |
| struct sk_buff *skb; |
| dma_addr_t mapaddr; |
| u32 maplen; |
| struct c2_rxp_hdr *rxp_hdr; |
| |
| skb = dev_alloc_skb(c2_port->rx_buf_size); |
| if (unlikely(!skb)) { |
| pr_debug("%s: out of memory for receive\n", |
| c2_port->netdev->name); |
| return -ENOMEM; |
| } |
| |
| /* Zero out the rxp hdr in the sk_buff */ |
| memset(skb->data, 0, sizeof(*rxp_hdr)); |
| |
| skb->dev = c2_port->netdev; |
| |
| maplen = c2_port->rx_buf_size; |
| mapaddr = |
| pci_map_single(c2dev->pcidev, skb->data, maplen, |
| PCI_DMA_FROMDEVICE); |
| |
| /* Set the sk_buff RXP_header to RXP_HRXD_READY */ |
| rxp_hdr = (struct c2_rxp_hdr *) skb->data; |
| rxp_hdr->flags = RXP_HRXD_READY; |
| |
| __raw_writew(0, elem->hw_desc + C2_RXP_STATUS); |
| __raw_writew((__force u16) cpu_to_be16((u16) maplen - sizeof(*rxp_hdr)), |
| elem->hw_desc + C2_RXP_LEN); |
| __raw_writeq((__force u64) cpu_to_be64(mapaddr), elem->hw_desc + C2_RXP_ADDR); |
| __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_READY), |
| elem->hw_desc + C2_RXP_FLAGS); |
| |
| elem->skb = skb; |
| elem->mapaddr = mapaddr; |
| elem->maplen = maplen; |
| rx_desc->len = maplen; |
| |
| return 0; |
| } |
| |
| /* |
| * Allocate buffers for the Rx ring |
| * For receive: rx_ring.to_clean is next received frame |
| */ |
| static int c2_rx_fill(struct c2_port *c2_port) |
| { |
| struct c2_ring *rx_ring = &c2_port->rx_ring; |
| struct c2_element *elem; |
| int ret = 0; |
| |
| elem = rx_ring->start; |
| do { |
| if (c2_rx_alloc(c2_port, elem)) { |
| ret = 1; |
| break; |
| } |
| } while ((elem = elem->next) != rx_ring->start); |
| |
| rx_ring->to_clean = rx_ring->start; |
| return ret; |
| } |
| |
| /* Free all buffers in RX ring, assumes receiver stopped */ |
| static void c2_rx_clean(struct c2_port *c2_port) |
| { |
| struct c2_dev *c2dev = c2_port->c2dev; |
| struct c2_ring *rx_ring = &c2_port->rx_ring; |
| struct c2_element *elem; |
| struct c2_rx_desc *rx_desc; |
| |
| elem = rx_ring->start; |
| do { |
| rx_desc = elem->ht_desc; |
| rx_desc->len = 0; |
| |
| __raw_writew(0, elem->hw_desc + C2_RXP_STATUS); |
| __raw_writew(0, elem->hw_desc + C2_RXP_COUNT); |
| __raw_writew(0, elem->hw_desc + C2_RXP_LEN); |
| __raw_writeq((__force u64) cpu_to_be64(0x99aabbccddeeffULL), |
| elem->hw_desc + C2_RXP_ADDR); |
| __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_UNINIT), |
| elem->hw_desc + C2_RXP_FLAGS); |
| |
| if (elem->skb) { |
| pci_unmap_single(c2dev->pcidev, elem->mapaddr, |
| elem->maplen, PCI_DMA_FROMDEVICE); |
| dev_kfree_skb(elem->skb); |
| elem->skb = NULL; |
| } |
| } while ((elem = elem->next) != rx_ring->start); |
| } |
| |
| static inline int c2_tx_free(struct c2_dev *c2dev, struct c2_element *elem) |
| { |
| struct c2_tx_desc *tx_desc = elem->ht_desc; |
| |
| tx_desc->len = 0; |
| |
| pci_unmap_single(c2dev->pcidev, elem->mapaddr, elem->maplen, |
| PCI_DMA_TODEVICE); |
| |
| if (elem->skb) { |
| dev_kfree_skb_any(elem->skb); |
| elem->skb = NULL; |
| } |
| |
| return 0; |
| } |
| |
| /* Free all buffers in TX ring, assumes transmitter stopped */ |
| static void c2_tx_clean(struct c2_port *c2_port) |
| { |
| struct c2_ring *tx_ring = &c2_port->tx_ring; |
| struct c2_element *elem; |
| struct c2_txp_desc txp_htxd; |
| int retry; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&c2_port->tx_lock, flags); |
| |
| elem = tx_ring->start; |
| |
| do { |
| retry = 0; |
| do { |
| txp_htxd.flags = |
| readw(elem->hw_desc + C2_TXP_FLAGS); |
| |
| if (txp_htxd.flags == TXP_HTXD_READY) { |
| retry = 1; |
| __raw_writew(0, |
| elem->hw_desc + C2_TXP_LEN); |
| __raw_writeq(0, |
| elem->hw_desc + C2_TXP_ADDR); |
| __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_DONE), |
| elem->hw_desc + C2_TXP_FLAGS); |
| c2_port->netdev->stats.tx_dropped++; |
| break; |
| } else { |
| __raw_writew(0, |
| elem->hw_desc + C2_TXP_LEN); |
| __raw_writeq((__force u64) cpu_to_be64(0x1122334455667788ULL), |
| elem->hw_desc + C2_TXP_ADDR); |
| __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_UNINIT), |
| elem->hw_desc + C2_TXP_FLAGS); |
| } |
| |
| c2_tx_free(c2_port->c2dev, elem); |
| |
| } while ((elem = elem->next) != tx_ring->start); |
| } while (retry); |
| |
| c2_port->tx_avail = c2_port->tx_ring.count - 1; |
| c2_port->c2dev->cur_tx = tx_ring->to_use - tx_ring->start; |
| |
| if (c2_port->tx_avail > MAX_SKB_FRAGS + 1) |
| netif_wake_queue(c2_port->netdev); |
| |
| spin_unlock_irqrestore(&c2_port->tx_lock, flags); |
| } |
| |
| /* |
| * Process transmit descriptors marked 'DONE' by the firmware, |
| * freeing up their unneeded sk_buffs. |
| */ |
| static void c2_tx_interrupt(struct net_device *netdev) |
| { |
| struct c2_port *c2_port = netdev_priv(netdev); |
| struct c2_dev *c2dev = c2_port->c2dev; |
| struct c2_ring *tx_ring = &c2_port->tx_ring; |
| struct c2_element *elem; |
| struct c2_txp_desc txp_htxd; |
| |
| spin_lock(&c2_port->tx_lock); |
| |
| for (elem = tx_ring->to_clean; elem != tx_ring->to_use; |
| elem = elem->next) { |
| txp_htxd.flags = |
| be16_to_cpu((__force __be16) readw(elem->hw_desc + C2_TXP_FLAGS)); |
| |
| if (txp_htxd.flags != TXP_HTXD_DONE) |
| break; |
| |
| if (netif_msg_tx_done(c2_port)) { |
| /* PCI reads are expensive in fast path */ |
| txp_htxd.len = |
| be16_to_cpu((__force __be16) readw(elem->hw_desc + C2_TXP_LEN)); |
| pr_debug("%s: tx done slot %3Zu status 0x%x len " |
| "%5u bytes\n", |
| netdev->name, elem - tx_ring->start, |
| txp_htxd.flags, txp_htxd.len); |
| } |
| |
| c2_tx_free(c2dev, elem); |
| ++(c2_port->tx_avail); |
| } |
| |
| tx_ring->to_clean = elem; |
| |
| if (netif_queue_stopped(netdev) |
| && c2_port->tx_avail > MAX_SKB_FRAGS + 1) |
| netif_wake_queue(netdev); |
| |
| spin_unlock(&c2_port->tx_lock); |
| } |
| |
| static void c2_rx_error(struct c2_port *c2_port, struct c2_element *elem) |
| { |
| struct c2_rx_desc *rx_desc = elem->ht_desc; |
| struct c2_rxp_hdr *rxp_hdr = (struct c2_rxp_hdr *) elem->skb->data; |
| |
| if (rxp_hdr->status != RXP_HRXD_OK || |
| rxp_hdr->len > (rx_desc->len - sizeof(*rxp_hdr))) { |
| pr_debug("BAD RXP_HRXD\n"); |
| pr_debug(" rx_desc : %p\n", rx_desc); |
| pr_debug(" index : %Zu\n", |
| elem - c2_port->rx_ring.start); |
| pr_debug(" len : %u\n", rx_desc->len); |
| pr_debug(" rxp_hdr : %p [PA %p]\n", rxp_hdr, |
| (void *) __pa((unsigned long) rxp_hdr)); |
| pr_debug(" flags : 0x%x\n", rxp_hdr->flags); |
| pr_debug(" status: 0x%x\n", rxp_hdr->status); |
| pr_debug(" len : %u\n", rxp_hdr->len); |
| pr_debug(" rsvd : 0x%x\n", rxp_hdr->rsvd); |
| } |
| |
| /* Setup the skb for reuse since we're dropping this pkt */ |
| elem->skb->data = elem->skb->head; |
| skb_reset_tail_pointer(elem->skb); |
| |
| /* Zero out the rxp hdr in the sk_buff */ |
| memset(elem->skb->data, 0, sizeof(*rxp_hdr)); |
| |
| /* Write the descriptor to the adapter's rx ring */ |
| __raw_writew(0, elem->hw_desc + C2_RXP_STATUS); |
| __raw_writew(0, elem->hw_desc + C2_RXP_COUNT); |
| __raw_writew((__force u16) cpu_to_be16((u16) elem->maplen - sizeof(*rxp_hdr)), |
| elem->hw_desc + C2_RXP_LEN); |
| __raw_writeq((__force u64) cpu_to_be64(elem->mapaddr), |
| elem->hw_desc + C2_RXP_ADDR); |
| __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_READY), |
| elem->hw_desc + C2_RXP_FLAGS); |
| |
| pr_debug("packet dropped\n"); |
| c2_port->netdev->stats.rx_dropped++; |
| } |
| |
| static void c2_rx_interrupt(struct net_device *netdev) |
| { |
| struct c2_port *c2_port = netdev_priv(netdev); |
| struct c2_dev *c2dev = c2_port->c2dev; |
| struct c2_ring *rx_ring = &c2_port->rx_ring; |
| struct c2_element *elem; |
| struct c2_rx_desc *rx_desc; |
| struct c2_rxp_hdr *rxp_hdr; |
| struct sk_buff *skb; |
| dma_addr_t mapaddr; |
| u32 maplen, buflen; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&c2dev->lock, flags); |
| |
| /* Begin where we left off */ |
| rx_ring->to_clean = rx_ring->start + c2dev->cur_rx; |
| |
| for (elem = rx_ring->to_clean; elem->next != rx_ring->to_clean; |
| elem = elem->next) { |
| rx_desc = elem->ht_desc; |
| mapaddr = elem->mapaddr; |
| maplen = elem->maplen; |
| skb = elem->skb; |
| rxp_hdr = (struct c2_rxp_hdr *) skb->data; |
| |
| if (rxp_hdr->flags != RXP_HRXD_DONE) |
| break; |
| buflen = rxp_hdr->len; |
| |
| /* Sanity check the RXP header */ |
| if (rxp_hdr->status != RXP_HRXD_OK || |
| buflen > (rx_desc->len - sizeof(*rxp_hdr))) { |
| c2_rx_error(c2_port, elem); |
| continue; |
| } |
| |
| /* |
| * Allocate and map a new skb for replenishing the host |
| * RX desc |
| */ |
| if (c2_rx_alloc(c2_port, elem)) { |
| c2_rx_error(c2_port, elem); |
| continue; |
| } |
| |
| /* Unmap the old skb */ |
| pci_unmap_single(c2dev->pcidev, mapaddr, maplen, |
| PCI_DMA_FROMDEVICE); |
| |
| prefetch(skb->data); |
| |
| /* |
| * Skip past the leading 8 bytes comprising of the |
| * "struct c2_rxp_hdr", prepended by the adapter |
| * to the usual Ethernet header ("struct ethhdr"), |
| * to the start of the raw Ethernet packet. |
| * |
| * Fix up the various fields in the sk_buff before |
| * passing it up to netif_rx(). The transfer size |
| * (in bytes) specified by the adapter len field of |
| * the "struct rxp_hdr_t" does NOT include the |
| * "sizeof(struct c2_rxp_hdr)". |
| */ |
| skb->data += sizeof(*rxp_hdr); |
| skb_set_tail_pointer(skb, buflen); |
| skb->len = buflen; |
| skb->protocol = eth_type_trans(skb, netdev); |
| |
| netif_rx(skb); |
| |
| netdev->last_rx = jiffies; |
| netdev->stats.rx_packets++; |
| netdev->stats.rx_bytes += buflen; |
| } |
| |
| /* Save where we left off */ |
| rx_ring->to_clean = elem; |
| c2dev->cur_rx = elem - rx_ring->start; |
| C2_SET_CUR_RX(c2dev, c2dev->cur_rx); |
| |
| spin_unlock_irqrestore(&c2dev->lock, flags); |
| } |
| |
| /* |
| * Handle netisr0 TX & RX interrupts. |
| */ |
| static irqreturn_t c2_interrupt(int irq, void *dev_id) |
| { |
| unsigned int netisr0, dmaisr; |
| int handled = 0; |
| struct c2_dev *c2dev = (struct c2_dev *) dev_id; |
| |
| /* Process CCILNET interrupts */ |
| netisr0 = readl(c2dev->regs + C2_NISR0); |
| if (netisr0) { |
| |
| /* |
| * There is an issue with the firmware that always |
| * provides the status of RX for both TX & RX |
| * interrupts. So process both queues here. |
| */ |
| c2_rx_interrupt(c2dev->netdev); |
| c2_tx_interrupt(c2dev->netdev); |
| |
| /* Clear the interrupt */ |
| writel(netisr0, c2dev->regs + C2_NISR0); |
| handled++; |
| } |
| |
| /* Process RNIC interrupts */ |
| dmaisr = readl(c2dev->regs + C2_DISR); |
| if (dmaisr) { |
| writel(dmaisr, c2dev->regs + C2_DISR); |
| c2_rnic_interrupt(c2dev); |
| handled++; |
| } |
| |
| if (handled) { |
| return IRQ_HANDLED; |
| } else { |
| return IRQ_NONE; |
| } |
| } |
| |
| static int c2_up(struct net_device *netdev) |
| { |
| struct c2_port *c2_port = netdev_priv(netdev); |
| struct c2_dev *c2dev = c2_port->c2dev; |
| struct c2_element *elem; |
| struct c2_rxp_hdr *rxp_hdr; |
| struct in_device *in_dev; |
| size_t rx_size, tx_size; |
| int ret, i; |
| unsigned int netimr0; |
| |
| if (netif_msg_ifup(c2_port)) |
| pr_debug("%s: enabling interface\n", netdev->name); |
| |
| /* Set the Rx buffer size based on MTU */ |
| c2_set_rxbufsize(c2_port); |
| |
| /* Allocate DMA'able memory for Tx/Rx host descriptor rings */ |
| rx_size = c2_port->rx_ring.count * sizeof(struct c2_rx_desc); |
| tx_size = c2_port->tx_ring.count * sizeof(struct c2_tx_desc); |
| |
| c2_port->mem_size = tx_size + rx_size; |
| c2_port->mem = pci_alloc_consistent(c2dev->pcidev, c2_port->mem_size, |
| &c2_port->dma); |
| if (c2_port->mem == NULL) { |
| pr_debug("Unable to allocate memory for " |
| "host descriptor rings\n"); |
| return -ENOMEM; |
| } |
| |
| memset(c2_port->mem, 0, c2_port->mem_size); |
| |
| /* Create the Rx host descriptor ring */ |
| if ((ret = |
| c2_rx_ring_alloc(&c2_port->rx_ring, c2_port->mem, c2_port->dma, |
| c2dev->mmio_rxp_ring))) { |
| pr_debug("Unable to create RX ring\n"); |
| goto bail0; |
| } |
| |
| /* Allocate Rx buffers for the host descriptor ring */ |
| if (c2_rx_fill(c2_port)) { |
| pr_debug("Unable to fill RX ring\n"); |
| goto bail1; |
| } |
| |
| /* Create the Tx host descriptor ring */ |
| if ((ret = c2_tx_ring_alloc(&c2_port->tx_ring, c2_port->mem + rx_size, |
| c2_port->dma + rx_size, |
| c2dev->mmio_txp_ring))) { |
| pr_debug("Unable to create TX ring\n"); |
| goto bail1; |
| } |
| |
| /* Set the TX pointer to where we left off */ |
| c2_port->tx_avail = c2_port->tx_ring.count - 1; |
| c2_port->tx_ring.to_use = c2_port->tx_ring.to_clean = |
| c2_port->tx_ring.start + c2dev->cur_tx; |
| |
| /* missing: Initialize MAC */ |
| |
| BUG_ON(c2_port->tx_ring.to_use != c2_port->tx_ring.to_clean); |
| |
| /* Reset the adapter, ensures the driver is in sync with the RXP */ |
| c2_reset(c2_port); |
| |
| /* Reset the READY bit in the sk_buff RXP headers & adapter HRXDQ */ |
| for (i = 0, elem = c2_port->rx_ring.start; i < c2_port->rx_ring.count; |
| i++, elem++) { |
| rxp_hdr = (struct c2_rxp_hdr *) elem->skb->data; |
| rxp_hdr->flags = 0; |
| __raw_writew((__force u16) cpu_to_be16(RXP_HRXD_READY), |
| elem->hw_desc + C2_RXP_FLAGS); |
| } |
| |
| /* Enable network packets */ |
| netif_start_queue(netdev); |
| |
| /* Enable IRQ */ |
| writel(0, c2dev->regs + C2_IDIS); |
| netimr0 = readl(c2dev->regs + C2_NIMR0); |
| netimr0 &= ~(C2_PCI_HTX_INT | C2_PCI_HRX_INT); |
| writel(netimr0, c2dev->regs + C2_NIMR0); |
| |
| /* Tell the stack to ignore arp requests for ipaddrs bound to |
| * other interfaces. This is needed to prevent the host stack |
| * from responding to arp requests to the ipaddr bound on the |
| * rdma interface. |
| */ |
| in_dev = in_dev_get(netdev); |
| IN_DEV_CONF_SET(in_dev, ARP_IGNORE, 1); |
| in_dev_put(in_dev); |
| |
| return 0; |
| |
| bail1: |
| c2_rx_clean(c2_port); |
| kfree(c2_port->rx_ring.start); |
| |
| bail0: |
| pci_free_consistent(c2dev->pcidev, c2_port->mem_size, c2_port->mem, |
| c2_port->dma); |
| |
| return ret; |
| } |
| |
| static int c2_down(struct net_device *netdev) |
| { |
| struct c2_port *c2_port = netdev_priv(netdev); |
| struct c2_dev *c2dev = c2_port->c2dev; |
| |
| if (netif_msg_ifdown(c2_port)) |
| pr_debug("%s: disabling interface\n", |
| netdev->name); |
| |
| /* Wait for all the queued packets to get sent */ |
| c2_tx_interrupt(netdev); |
| |
| /* Disable network packets */ |
| netif_stop_queue(netdev); |
| |
| /* Disable IRQs by clearing the interrupt mask */ |
| writel(1, c2dev->regs + C2_IDIS); |
| writel(0, c2dev->regs + C2_NIMR0); |
| |
| /* missing: Stop transmitter */ |
| |
| /* missing: Stop receiver */ |
| |
| /* Reset the adapter, ensures the driver is in sync with the RXP */ |
| c2_reset(c2_port); |
| |
| /* missing: Turn off LEDs here */ |
| |
| /* Free all buffers in the host descriptor rings */ |
| c2_tx_clean(c2_port); |
| c2_rx_clean(c2_port); |
| |
| /* Free the host descriptor rings */ |
| kfree(c2_port->rx_ring.start); |
| kfree(c2_port->tx_ring.start); |
| pci_free_consistent(c2dev->pcidev, c2_port->mem_size, c2_port->mem, |
| c2_port->dma); |
| |
| return 0; |
| } |
| |
| static void c2_reset(struct c2_port *c2_port) |
| { |
| struct c2_dev *c2dev = c2_port->c2dev; |
| unsigned int cur_rx = c2dev->cur_rx; |
| |
| /* Tell the hardware to quiesce */ |
| C2_SET_CUR_RX(c2dev, cur_rx | C2_PCI_HRX_QUI); |
| |
| /* |
| * The hardware will reset the C2_PCI_HRX_QUI bit once |
| * the RXP is quiesced. Wait 2 seconds for this. |
| */ |
| ssleep(2); |
| |
| cur_rx = C2_GET_CUR_RX(c2dev); |
| |
| if (cur_rx & C2_PCI_HRX_QUI) |
| pr_debug("c2_reset: failed to quiesce the hardware!\n"); |
| |
| cur_rx &= ~C2_PCI_HRX_QUI; |
| |
| c2dev->cur_rx = cur_rx; |
| |
| pr_debug("Current RX: %u\n", c2dev->cur_rx); |
| } |
| |
| static int c2_xmit_frame(struct sk_buff *skb, struct net_device *netdev) |
| { |
| struct c2_port *c2_port = netdev_priv(netdev); |
| struct c2_dev *c2dev = c2_port->c2dev; |
| struct c2_ring *tx_ring = &c2_port->tx_ring; |
| struct c2_element *elem; |
| dma_addr_t mapaddr; |
| u32 maplen; |
| unsigned long flags; |
| unsigned int i; |
| |
| spin_lock_irqsave(&c2_port->tx_lock, flags); |
| |
| if (unlikely(c2_port->tx_avail < (skb_shinfo(skb)->nr_frags + 1))) { |
| netif_stop_queue(netdev); |
| spin_unlock_irqrestore(&c2_port->tx_lock, flags); |
| |
| pr_debug("%s: Tx ring full when queue awake!\n", |
| netdev->name); |
| return NETDEV_TX_BUSY; |
| } |
| |
| maplen = skb_headlen(skb); |
| mapaddr = |
| pci_map_single(c2dev->pcidev, skb->data, maplen, PCI_DMA_TODEVICE); |
| |
| elem = tx_ring->to_use; |
| elem->skb = skb; |
| elem->mapaddr = mapaddr; |
| elem->maplen = maplen; |
| |
| /* Tell HW to xmit */ |
| __raw_writeq((__force u64) cpu_to_be64(mapaddr), |
| elem->hw_desc + C2_TXP_ADDR); |
| __raw_writew((__force u16) cpu_to_be16(maplen), |
| elem->hw_desc + C2_TXP_LEN); |
| __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_READY), |
| elem->hw_desc + C2_TXP_FLAGS); |
| |
| netdev->stats.tx_packets++; |
| netdev->stats.tx_bytes += maplen; |
| |
| /* Loop thru additional data fragments and queue them */ |
| if (skb_shinfo(skb)->nr_frags) { |
| for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { |
| skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; |
| maplen = frag->size; |
| mapaddr = |
| pci_map_page(c2dev->pcidev, frag->page, |
| frag->page_offset, maplen, |
| PCI_DMA_TODEVICE); |
| |
| elem = elem->next; |
| elem->skb = NULL; |
| elem->mapaddr = mapaddr; |
| elem->maplen = maplen; |
| |
| /* Tell HW to xmit */ |
| __raw_writeq((__force u64) cpu_to_be64(mapaddr), |
| elem->hw_desc + C2_TXP_ADDR); |
| __raw_writew((__force u16) cpu_to_be16(maplen), |
| elem->hw_desc + C2_TXP_LEN); |
| __raw_writew((__force u16) cpu_to_be16(TXP_HTXD_READY), |
| elem->hw_desc + C2_TXP_FLAGS); |
| |
| netdev->stats.tx_packets++; |
| netdev->stats.tx_bytes += maplen; |
| } |
| } |
| |
| tx_ring->to_use = elem->next; |
| c2_port->tx_avail -= (skb_shinfo(skb)->nr_frags + 1); |
| |
| if (c2_port->tx_avail <= MAX_SKB_FRAGS + 1) { |
| netif_stop_queue(netdev); |
| if (netif_msg_tx_queued(c2_port)) |
| pr_debug("%s: transmit queue full\n", |
| netdev->name); |
| } |
| |
| spin_unlock_irqrestore(&c2_port->tx_lock, flags); |
| |
| netdev->trans_start = jiffies; |
| |
| return NETDEV_TX_OK; |
| } |
| |
| static void c2_tx_timeout(struct net_device *netdev) |
| { |
| struct c2_port *c2_port = netdev_priv(netdev); |
| |
| if (netif_msg_timer(c2_port)) |
| pr_debug("%s: tx timeout\n", netdev->name); |
| |
| c2_tx_clean(c2_port); |
| } |
| |
| static int c2_change_mtu(struct net_device *netdev, int new_mtu) |
| { |
| int ret = 0; |
| |
| if (new_mtu < ETH_ZLEN || new_mtu > ETH_JUMBO_MTU) |
| return -EINVAL; |
| |
| netdev->mtu = new_mtu; |
| |
| if (netif_running(netdev)) { |
| c2_down(netdev); |
| |
| c2_up(netdev); |
| } |
| |
| return ret; |
| } |
| |
| static const struct net_device_ops c2_netdev = { |
| .ndo_open = c2_up, |
| .ndo_stop = c2_down, |
| .ndo_start_xmit = c2_xmit_frame, |
| .ndo_tx_timeout = c2_tx_timeout, |
| .ndo_change_mtu = c2_change_mtu, |
| .ndo_set_mac_address = eth_mac_addr, |
| .ndo_validate_addr = eth_validate_addr, |
| }; |
| |
| /* Initialize network device */ |
| static struct net_device *c2_devinit(struct c2_dev *c2dev, |
| void __iomem * mmio_addr) |
| { |
| struct c2_port *c2_port = NULL; |
| struct net_device *netdev = alloc_etherdev(sizeof(*c2_port)); |
| |
| if (!netdev) { |
| pr_debug("c2_port etherdev alloc failed"); |
| return NULL; |
| } |
| |
| SET_NETDEV_DEV(netdev, &c2dev->pcidev->dev); |
| |
| netdev->netdev_ops = &c2_netdev; |
| netdev->watchdog_timeo = C2_TX_TIMEOUT; |
| netdev->irq = c2dev->pcidev->irq; |
| |
| c2_port = netdev_priv(netdev); |
| c2_port->netdev = netdev; |
| c2_port->c2dev = c2dev; |
| c2_port->msg_enable = netif_msg_init(debug, default_msg); |
| c2_port->tx_ring.count = C2_NUM_TX_DESC; |
| c2_port->rx_ring.count = C2_NUM_RX_DESC; |
| |
| spin_lock_init(&c2_port->tx_lock); |
| |
| /* Copy our 48-bit ethernet hardware address */ |
| memcpy_fromio(netdev->dev_addr, mmio_addr + C2_REGS_ENADDR, 6); |
| |
| /* Validate the MAC address */ |
| if (!is_valid_ether_addr(netdev->dev_addr)) { |
| pr_debug("Invalid MAC Address\n"); |
| c2_print_macaddr(netdev); |
| free_netdev(netdev); |
| return NULL; |
| } |
| |
| c2dev->netdev = netdev; |
| |
| return netdev; |
| } |
| |
| static int __devinit c2_probe(struct pci_dev *pcidev, |
| const struct pci_device_id *ent) |
| { |
| int ret = 0, i; |
| unsigned long reg0_start, reg0_flags, reg0_len; |
| unsigned long reg2_start, reg2_flags, reg2_len; |
| unsigned long reg4_start, reg4_flags, reg4_len; |
| unsigned kva_map_size; |
| struct net_device *netdev = NULL; |
| struct c2_dev *c2dev = NULL; |
| void __iomem *mmio_regs = NULL; |
| |
| printk(KERN_INFO PFX "AMSO1100 Gigabit Ethernet driver v%s loaded\n", |
| DRV_VERSION); |
| |
| /* Enable PCI device */ |
| ret = pci_enable_device(pcidev); |
| if (ret) { |
| printk(KERN_ERR PFX "%s: Unable to enable PCI device\n", |
| pci_name(pcidev)); |
| goto bail0; |
| } |
| |
| reg0_start = pci_resource_start(pcidev, BAR_0); |
| reg0_len = pci_resource_len(pcidev, BAR_0); |
| reg0_flags = pci_resource_flags(pcidev, BAR_0); |
| |
| reg2_start = pci_resource_start(pcidev, BAR_2); |
| reg2_len = pci_resource_len(pcidev, BAR_2); |
| reg2_flags = pci_resource_flags(pcidev, BAR_2); |
| |
| reg4_start = pci_resource_start(pcidev, BAR_4); |
| reg4_len = pci_resource_len(pcidev, BAR_4); |
| reg4_flags = pci_resource_flags(pcidev, BAR_4); |
| |
| pr_debug("BAR0 size = 0x%lX bytes\n", reg0_len); |
| pr_debug("BAR2 size = 0x%lX bytes\n", reg2_len); |
| pr_debug("BAR4 size = 0x%lX bytes\n", reg4_len); |
| |
| /* Make sure PCI base addr are MMIO */ |
| if (!(reg0_flags & IORESOURCE_MEM) || |
| !(reg2_flags & IORESOURCE_MEM) || !(reg4_flags & IORESOURCE_MEM)) { |
| printk(KERN_ERR PFX "PCI regions not an MMIO resource\n"); |
| ret = -ENODEV; |
| goto bail1; |
| } |
| |
| /* Check for weird/broken PCI region reporting */ |
| if ((reg0_len < C2_REG0_SIZE) || |
| (reg2_len < C2_REG2_SIZE) || (reg4_len < C2_REG4_SIZE)) { |
| printk(KERN_ERR PFX "Invalid PCI region sizes\n"); |
| ret = -ENODEV; |
| goto bail1; |
| } |
| |
| /* Reserve PCI I/O and memory resources */ |
| ret = pci_request_regions(pcidev, DRV_NAME); |
| if (ret) { |
| printk(KERN_ERR PFX "%s: Unable to request regions\n", |
| pci_name(pcidev)); |
| goto bail1; |
| } |
| |
| if ((sizeof(dma_addr_t) > 4)) { |
| ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(64)); |
| if (ret < 0) { |
| printk(KERN_ERR PFX "64b DMA configuration failed\n"); |
| goto bail2; |
| } |
| } else { |
| ret = pci_set_dma_mask(pcidev, DMA_32BIT_MASK); |
| if (ret < 0) { |
| printk(KERN_ERR PFX "32b DMA configuration failed\n"); |
| goto bail2; |
| } |
| } |
| |
| /* Enables bus-mastering on the device */ |
| pci_set_master(pcidev); |
| |
| /* Remap the adapter PCI registers in BAR4 */ |
| mmio_regs = ioremap_nocache(reg4_start + C2_PCI_REGS_OFFSET, |
| sizeof(struct c2_adapter_pci_regs)); |
| if (!mmio_regs) { |
| printk(KERN_ERR PFX |
| "Unable to remap adapter PCI registers in BAR4\n"); |
| ret = -EIO; |
| goto bail2; |
| } |
| |
| /* Validate PCI regs magic */ |
| for (i = 0; i < sizeof(c2_magic); i++) { |
| if (c2_magic[i] != readb(mmio_regs + C2_REGS_MAGIC + i)) { |
| printk(KERN_ERR PFX "Downlevel Firmware boot loader " |
| "[%d/%Zd: got 0x%x, exp 0x%x]. Use the cc_flash " |
| "utility to update your boot loader\n", |
| i + 1, sizeof(c2_magic), |
| readb(mmio_regs + C2_REGS_MAGIC + i), |
| c2_magic[i]); |
| printk(KERN_ERR PFX "Adapter not claimed\n"); |
| iounmap(mmio_regs); |
| ret = -EIO; |
| goto bail2; |
| } |
| } |
| |
| /* Validate the adapter version */ |
| if (be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_VERS)) != C2_VERSION) { |
| printk(KERN_ERR PFX "Version mismatch " |
| "[fw=%u, c2=%u], Adapter not claimed\n", |
| be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_VERS)), |
| C2_VERSION); |
| ret = -EINVAL; |
| iounmap(mmio_regs); |
| goto bail2; |
| } |
| |
| /* Validate the adapter IVN */ |
| if (be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_IVN)) != C2_IVN) { |
| printk(KERN_ERR PFX "Downlevel FIrmware level. You should be using " |
| "the OpenIB device support kit. " |
| "[fw=0x%x, c2=0x%x], Adapter not claimed\n", |
| be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_IVN)), |
| C2_IVN); |
| ret = -EINVAL; |
| iounmap(mmio_regs); |
| goto bail2; |
| } |
| |
| /* Allocate hardware structure */ |
| c2dev = (struct c2_dev *) ib_alloc_device(sizeof(*c2dev)); |
| if (!c2dev) { |
| printk(KERN_ERR PFX "%s: Unable to alloc hardware struct\n", |
| pci_name(pcidev)); |
| ret = -ENOMEM; |
| iounmap(mmio_regs); |
| goto bail2; |
| } |
| |
| memset(c2dev, 0, sizeof(*c2dev)); |
| spin_lock_init(&c2dev->lock); |
| c2dev->pcidev = pcidev; |
| c2dev->cur_tx = 0; |
| |
| /* Get the last RX index */ |
| c2dev->cur_rx = |
| (be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_HRX_CUR)) - |
| 0xffffc000) / sizeof(struct c2_rxp_desc); |
| |
| /* Request an interrupt line for the driver */ |
| ret = request_irq(pcidev->irq, c2_interrupt, IRQF_SHARED, DRV_NAME, c2dev); |
| if (ret) { |
| printk(KERN_ERR PFX "%s: requested IRQ %u is busy\n", |
| pci_name(pcidev), pcidev->irq); |
| iounmap(mmio_regs); |
| goto bail3; |
| } |
| |
| /* Set driver specific data */ |
| pci_set_drvdata(pcidev, c2dev); |
| |
| /* Initialize network device */ |
| if ((netdev = c2_devinit(c2dev, mmio_regs)) == NULL) { |
| iounmap(mmio_regs); |
| goto bail4; |
| } |
| |
| /* Save off the actual size prior to unmapping mmio_regs */ |
| kva_map_size = be32_to_cpu((__force __be32) readl(mmio_regs + C2_REGS_PCI_WINSIZE)); |
| |
| /* Unmap the adapter PCI registers in BAR4 */ |
| iounmap(mmio_regs); |
| |
| /* Register network device */ |
| ret = register_netdev(netdev); |
| if (ret) { |
| printk(KERN_ERR PFX "Unable to register netdev, ret = %d\n", |
| ret); |
| goto bail5; |
| } |
| |
| /* Disable network packets */ |
| netif_stop_queue(netdev); |
| |
| /* Remap the adapter HRXDQ PA space to kernel VA space */ |
| c2dev->mmio_rxp_ring = ioremap_nocache(reg4_start + C2_RXP_HRXDQ_OFFSET, |
| C2_RXP_HRXDQ_SIZE); |
| if (!c2dev->mmio_rxp_ring) { |
| printk(KERN_ERR PFX "Unable to remap MMIO HRXDQ region\n"); |
| ret = -EIO; |
| goto bail6; |
| } |
| |
| /* Remap the adapter HTXDQ PA space to kernel VA space */ |
| c2dev->mmio_txp_ring = ioremap_nocache(reg4_start + C2_TXP_HTXDQ_OFFSET, |
| C2_TXP_HTXDQ_SIZE); |
| if (!c2dev->mmio_txp_ring) { |
| printk(KERN_ERR PFX "Unable to remap MMIO HTXDQ region\n"); |
| ret = -EIO; |
| goto bail7; |
| } |
| |
| /* Save off the current RX index in the last 4 bytes of the TXP Ring */ |
| C2_SET_CUR_RX(c2dev, c2dev->cur_rx); |
| |
| /* Remap the PCI registers in adapter BAR0 to kernel VA space */ |
| c2dev->regs = ioremap_nocache(reg0_start, reg0_len); |
| if (!c2dev->regs) { |
| printk(KERN_ERR PFX "Unable to remap BAR0\n"); |
| ret = -EIO; |
| goto bail8; |
| } |
| |
| /* Remap the PCI registers in adapter BAR4 to kernel VA space */ |
| c2dev->pa = reg4_start + C2_PCI_REGS_OFFSET; |
| c2dev->kva = ioremap_nocache(reg4_start + C2_PCI_REGS_OFFSET, |
| kva_map_size); |
| if (!c2dev->kva) { |
| printk(KERN_ERR PFX "Unable to remap BAR4\n"); |
| ret = -EIO; |
| goto bail9; |
| } |
| |
| /* Print out the MAC address */ |
| c2_print_macaddr(netdev); |
| |
| ret = c2_rnic_init(c2dev); |
| if (ret) { |
| printk(KERN_ERR PFX "c2_rnic_init failed: %d\n", ret); |
| goto bail10; |
| } |
| |
| if (c2_register_device(c2dev)) |
| goto bail10; |
| |
| return 0; |
| |
| bail10: |
| iounmap(c2dev->kva); |
| |
| bail9: |
| iounmap(c2dev->regs); |
| |
| bail8: |
| iounmap(c2dev->mmio_txp_ring); |
| |
| bail7: |
| iounmap(c2dev->mmio_rxp_ring); |
| |
| bail6: |
| unregister_netdev(netdev); |
| |
| bail5: |
| free_netdev(netdev); |
| |
| bail4: |
| free_irq(pcidev->irq, c2dev); |
| |
| bail3: |
| ib_dealloc_device(&c2dev->ibdev); |
| |
| bail2: |
| pci_release_regions(pcidev); |
| |
| bail1: |
| pci_disable_device(pcidev); |
| |
| bail0: |
| return ret; |
| } |
| |
| static void __devexit c2_remove(struct pci_dev *pcidev) |
| { |
| struct c2_dev *c2dev = pci_get_drvdata(pcidev); |
| struct net_device *netdev = c2dev->netdev; |
| |
| /* Unregister with OpenIB */ |
| c2_unregister_device(c2dev); |
| |
| /* Clean up the RNIC resources */ |
| c2_rnic_term(c2dev); |
| |
| /* Remove network device from the kernel */ |
| unregister_netdev(netdev); |
| |
| /* Free network device */ |
| free_netdev(netdev); |
| |
| /* Free the interrupt line */ |
| free_irq(pcidev->irq, c2dev); |
| |
| /* missing: Turn LEDs off here */ |
| |
| /* Unmap adapter PA space */ |
| iounmap(c2dev->kva); |
| iounmap(c2dev->regs); |
| iounmap(c2dev->mmio_txp_ring); |
| iounmap(c2dev->mmio_rxp_ring); |
| |
| /* Free the hardware structure */ |
| ib_dealloc_device(&c2dev->ibdev); |
| |
| /* Release reserved PCI I/O and memory resources */ |
| pci_release_regions(pcidev); |
| |
| /* Disable PCI device */ |
| pci_disable_device(pcidev); |
| |
| /* Clear driver specific data */ |
| pci_set_drvdata(pcidev, NULL); |
| } |
| |
| static struct pci_driver c2_pci_driver = { |
| .name = DRV_NAME, |
| .id_table = c2_pci_table, |
| .probe = c2_probe, |
| .remove = __devexit_p(c2_remove), |
| }; |
| |
| static int __init c2_init_module(void) |
| { |
| return pci_register_driver(&c2_pci_driver); |
| } |
| |
| static void __exit c2_exit_module(void) |
| { |
| pci_unregister_driver(&c2_pci_driver); |
| } |
| |
| module_init(c2_init_module); |
| module_exit(c2_exit_module); |