diff options
Diffstat (limited to 'drivers/net/e1000e/netdev.c')
| -rw-r--r-- | drivers/net/e1000e/netdev.c | 4438 |
1 files changed, 4438 insertions, 0 deletions
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c new file mode 100644 index 000000000000..033e124d1c1f --- /dev/null +++ b/drivers/net/e1000e/netdev.c @@ -0,0 +1,4438 @@ +/******************************************************************************* + + Intel PRO/1000 Linux driver + Copyright(c) 1999 - 2007 Intel Corporation. + + This program is free software; you can redistribute it and/or modify it + under the terms and conditions 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., + 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + + The full GNU General Public License is included in this distribution in + the file called "COPYING". + + Contact Information: + Linux NICS <linux.nics@intel.com> + e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> + Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + +*******************************************************************************/ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/vmalloc.h> +#include <linux/pagemap.h> +#include <linux/delay.h> +#include <linux/netdevice.h> +#include <linux/tcp.h> +#include <linux/ipv6.h> +#include <net/checksum.h> +#include <net/ip6_checksum.h> +#include <linux/mii.h> +#include <linux/ethtool.h> +#include <linux/if_vlan.h> +#include <linux/cpu.h> +#include <linux/smp.h> + +#include "e1000.h" + +#define DRV_VERSION "0.2.0" +char e1000e_driver_name[] = "e1000e"; +const char e1000e_driver_version[] = DRV_VERSION; + +static const struct e1000_info *e1000_info_tbl[] = { + [board_82571] = &e1000_82571_info, + [board_82572] = &e1000_82572_info, + [board_82573] = &e1000_82573_info, + [board_80003es2lan] = &e1000_es2_info, + [board_ich8lan] = &e1000_ich8_info, + [board_ich9lan] = &e1000_ich9_info, +}; + +#ifdef DEBUG +/** + * e1000_get_hw_dev_name - return device name string + * used by hardware layer to print debugging information + **/ +char *e1000e_get_hw_dev_name(struct e1000_hw *hw) +{ + return hw->adapter->netdev->name; +} +#endif + +/** + * e1000_desc_unused - calculate if we have unused descriptors + **/ +static int e1000_desc_unused(struct e1000_ring *ring) +{ + if (ring->next_to_clean > ring->next_to_use) + return ring->next_to_clean - ring->next_to_use - 1; + + return ring->count + ring->next_to_clean - ring->next_to_use - 1; +} + +/** + * e1000_receive_skb - helper function to handle rx indications + * @adapter: board private structure + * @status: descriptor status field as written by hardware + * @vlan: descriptor vlan field as written by hardware (no le/be conversion) + * @skb: pointer to sk_buff to be indicated to stack + **/ +static void e1000_receive_skb(struct e1000_adapter *adapter, + struct net_device *netdev, + struct sk_buff *skb, + u8 status, u16 vlan) +{ + skb->protocol = eth_type_trans(skb, netdev); + + if (adapter->vlgrp && (status & E1000_RXD_STAT_VP)) + vlan_hwaccel_receive_skb(skb, adapter->vlgrp, + le16_to_cpu(vlan) & + E1000_RXD_SPC_VLAN_MASK); + else + netif_receive_skb(skb); + + netdev->last_rx = jiffies; +} + +/** + * e1000_rx_checksum - Receive Checksum Offload for 82543 + * @adapter: board private structure + * @status_err: receive descriptor status and error fields + * @csum: receive descriptor csum field + * @sk_buff: socket buffer with received data + **/ +static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, + u32 csum, struct sk_buff *skb) +{ + u16 status = (u16)status_err; + u8 errors = (u8)(status_err >> 24); + skb->ip_summed = CHECKSUM_NONE; + + /* Ignore Checksum bit is set */ + if (status & E1000_RXD_STAT_IXSM) + return; + /* TCP/UDP checksum error bit is set */ + if (errors & E1000_RXD_ERR_TCPE) { + /* let the stack verify checksum errors */ + adapter->hw_csum_err++; + return; + } + + /* TCP/UDP Checksum has not been calculated */ + if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) + return; + + /* It must be a TCP or UDP packet with a valid checksum */ + if (status & E1000_RXD_STAT_TCPCS) { + /* TCP checksum is good */ + skb->ip_summed = CHECKSUM_UNNECESSARY; + } else { + /* IP fragment with UDP payload */ + /* Hardware complements the payload checksum, so we undo it + * and then put the value in host order for further stack use. + */ + csum = ntohl(csum ^ 0xFFFF); + skb->csum = csum; + skb->ip_summed = CHECKSUM_COMPLETE; + } + adapter->hw_csum_good++; +} + +/** + * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended + * @adapter: address of board private structure + **/ +static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, + int cleaned_count) +{ + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + struct e1000_ring *rx_ring = adapter->rx_ring; + struct e1000_rx_desc *rx_desc; + struct e1000_buffer *buffer_info; + struct sk_buff *skb; + unsigned int i; + unsigned int bufsz = adapter->rx_buffer_len + NET_IP_ALIGN; + + i = rx_ring->next_to_use; + buffer_info = &rx_ring->buffer_info[i]; + + while (cleaned_count--) { + skb = buffer_info->skb; + if (skb) { + skb_trim(skb, 0); + goto map_skb; + } + + skb = netdev_alloc_skb(netdev, bufsz); + if (!skb) { + /* Better luck next round */ + adapter->alloc_rx_buff_failed++; + break; + } + + /* Make buffer alignment 2 beyond a 16 byte boundary + * this will result in a 16 byte aligned IP header after + * the 14 byte MAC header is removed + */ + skb_reserve(skb, NET_IP_ALIGN); + + buffer_info->skb = skb; +map_skb: + buffer_info->dma = pci_map_single(pdev, skb->data, + adapter->rx_buffer_len, + PCI_DMA_FROMDEVICE); + if (pci_dma_mapping_error(buffer_info->dma)) { + dev_err(&pdev->dev, "RX DMA map failed\n"); + adapter->rx_dma_failed++; + break; + } + + rx_desc = E1000_RX_DESC(*rx_ring, i); + rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); + + i++; + if (i == rx_ring->count) + i = 0; + buffer_info = &rx_ring->buffer_info[i]; + } + + if (rx_ring->next_to_use != i) { + rx_ring->next_to_use = i; + if (i-- == 0) + i = (rx_ring->count - 1); + + /* Force memory writes to complete before letting h/w + * know there are new descriptors to fetch. (Only + * applicable for weak-ordered memory model archs, + * such as IA-64). */ + wmb(); + writel(i, adapter->hw.hw_addr + rx_ring->tail); + } +} + +/** + * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split + * @adapter: address of board private structure + **/ +static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, + int cleaned_count) +{ + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + union e1000_rx_desc_packet_split *rx_desc; + struct e1000_ring *rx_ring = adapter->rx_ring; + struct e1000_buffer *buffer_info; + struct e1000_ps_page *ps_page; + struct sk_buff *skb; + unsigned int i, j; + + i = rx_ring->next_to_use; + buffer_info = &rx_ring->buffer_info[i]; + + while (cleaned_count--) { + rx_desc = E1000_RX_DESC_PS(*rx_ring, i); + + for (j = 0; j < PS_PAGE_BUFFERS; j++) { + ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS) + + j]; + if (j < adapter->rx_ps_pages) { + if (!ps_page->page) { + ps_page->page = alloc_page(GFP_ATOMIC); + if (!ps_page->page) { + adapter->alloc_rx_buff_failed++; + goto no_buffers; + } + ps_page->dma = pci_map_page(pdev, + ps_page->page, + 0, PAGE_SIZE, + PCI_DMA_FROMDEVICE); + if (pci_dma_mapping_error( + ps_page->dma)) { + dev_err(&adapter->pdev->dev, + "RX DMA page map failed\n"); + adapter->rx_dma_failed++; + goto no_buffers; + } + } + /* + * Refresh the desc even if buffer_addrs + * didn't change because each write-back + * erases this info. + */ + rx_desc->read.buffer_addr[j+1] = + cpu_to_le64(ps_page->dma); + } else { + rx_desc->read.buffer_addr[j+1] = ~0; + } + } + + skb = netdev_alloc_skb(netdev, + adapter->rx_ps_bsize0 + NET_IP_ALIGN); + + if (!skb) { + adapter->alloc_rx_buff_failed++; + break; + } + + /* Make buffer alignment 2 beyond a 16 byte boundary + * this will result in a 16 byte aligned IP header after + * the 14 byte MAC header is removed + */ + skb_reserve(skb, NET_IP_ALIGN); + + buffer_info->skb = skb; + buffer_info->dma = pci_map_single(pdev, skb->data, + adapter->rx_ps_bsize0, + PCI_DMA_FROMDEVICE); + if (pci_dma_mapping_error(buffer_info->dma)) { + dev_err(&pdev->dev, "RX DMA map failed\n"); + adapter->rx_dma_failed++; + /* cleanup skb */ + dev_kfree_skb_any(skb); + buffer_info->skb = NULL; + break; + } + + rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); + + i++; + if (i == rx_ring->count) + i = 0; + buffer_info = &rx_ring->buffer_info[i]; + } + +no_buffers: + if (rx_ring->next_to_use != i) { + rx_ring->next_to_use = i; + + if (!(i--)) + i = (rx_ring->count - 1); + + /* Force memory writes to complete before letting h/w + * know there are new descriptors to fetch. (Only + * applicable for weak-ordered memory model archs, + * such as IA-64). */ + wmb(); + /* Hardware increments by 16 bytes, but packet split + * descriptors are 32 bytes...so we increment tail + * twice as much. + */ + writel(i<<1, adapter->hw.hw_addr + rx_ring->tail); + } +} + +/** + * e1000_alloc_rx_buffers_jumbo - Replace used jumbo receive buffers + * + * @adapter: address of board private structure + * @cleaned_count: number of buffers to allocate this pass + **/ +static void e1000_alloc_rx_buffers_jumbo(struct e1000_adapter *adapter, + int cleaned_count) +{ + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + struct e1000_ring *rx_ring = adapter->rx_ring; + struct e1000_rx_desc *rx_desc; + struct e1000_buffer *buffer_info; + struct sk_buff *skb; + unsigned int i; + unsigned int bufsz = 256 - + 16 /*for skb_reserve */ - + NET_IP_ALIGN; + + i = rx_ring->next_to_use; + buffer_info = &rx_ring->buffer_info[i]; + + while (cleaned_count--) { + skb = buffer_info->skb; + if (skb) { + skb_trim(skb, 0); + goto check_page; + } + + skb = netdev_alloc_skb(netdev, bufsz); + if (!skb) { + /* Better luck next round */ + adapter->alloc_rx_buff_failed++; + break; + } + + /* Make buffer alignment 2 beyond a 16 byte boundary + * this will result in a 16 byte aligned IP header after + * the 14 byte MAC header is removed + */ + skb_reserve(skb, NET_IP_ALIGN); + + buffer_info->skb = skb; +check_page: + /* allocate a new page if necessary */ + if (!buffer_info->page) { + buffer_info->page = alloc_page(GFP_ATOMIC); + if (!buffer_info->page) { + adapter->alloc_rx_buff_failed++; + break; + } + } + + if (!buffer_info->dma) + buffer_info->dma = pci_map_page(pdev, + buffer_info->page, 0, + PAGE_SIZE, + PCI_DMA_FROMDEVICE); + if (pci_dma_mapping_error(buffer_info->dma)) { + dev_err(&adapter->pdev->dev, "RX DMA page map failed\n"); + adapter->rx_dma_failed++; + break; + } + + rx_desc = E1000_RX_DESC(*rx_ring, i); + rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); + + i++; + if (i == rx_ring->count) + i = 0; + buffer_info = &rx_ring->buffer_info[i]; + } + + if (rx_ring->next_to_use != i) { + rx_ring->next_to_use = i; + if (i-- == 0) + i = (rx_ring->count - 1); + + /* Force memory writes to complete before letting h/w + * know there are new descriptors to fetch. (Only + * applicable for weak-ordered memory model archs, + * such as IA-64). */ + wmb(); + writel(i, adapter->hw.hw_addr + rx_ring->tail); + } +} + +/** + * e1000_clean_rx_irq - Send received data up the network stack; legacy + * @adapter: board private structure + * + * the return value indicates whether actual cleaning was done, there + * is no guarantee that everything was cleaned + **/ +static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, + int *work_done, int work_to_do) +{ + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + struct e1000_ring *rx_ring = adapter->rx_ring; + struct e1000_rx_desc *rx_desc, *next_rxd; + struct e1000_buffer *buffer_info, *next_buffer; + u32 length; + unsigned int i; + int cleaned_count = 0; + bool cleaned = 0; + unsigned int total_rx_bytes = 0, total_rx_packets = 0; + + i = rx_ring->next_to_clean; + rx_desc = E1000_RX_DESC(*rx_ring, i); + buffer_info = &rx_ring->buffer_info[i]; + + while (rx_desc->status & E1000_RXD_STAT_DD) { + struct sk_buff *skb; + u8 status; + + if (*work_done >= work_to_do) + break; + (*work_done)++; + + status = rx_desc->status; + skb = buffer_info->skb; + buffer_info->skb = NULL; + + prefetch(skb->data - NET_IP_ALIGN); + + i++; + if (i == rx_ring->count) + i = 0; + next_rxd = E1000_RX_DESC(*rx_ring, i); + prefetch(next_rxd); + + next_buffer = &rx_ring->buffer_info[i]; + + cleaned = 1; + cleaned_count++; + pci_unmap_single(pdev, + buffer_info->dma, + adapter->rx_buffer_len, + PCI_DMA_FROMDEVICE); + buffer_info->dma = 0; + + length = le16_to_cpu(rx_desc->length); + + /* !EOP means multiple descriptors were used to store a single + * packet, also make sure the frame isn't just CRC only */ + if (!(status & E1000_RXD_STAT_EOP) || (length <= 4)) { + /* All receives must fit into a single buffer */ + ndev_dbg(netdev, "%s: Receive packet consumed " + "multiple buffers\n", netdev->name); + /* recycle */ + buffer_info->skb = skb; + goto next_desc; + } + + if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) { + /* recycle */ + buffer_info->skb = skb; + goto next_desc; + } + + /* adjust length to remove Ethernet CRC */ + length -= 4; + + /* probably a little skewed due to removing CRC */ + total_rx_bytes += length; + total_rx_packets++; + + /* code added for copybreak, this should improve + * performance for small packets with large amounts + * of reassembly being done in the stack */ + if (length < copybreak) { + struct sk_buff *new_skb = + netdev_alloc_skb(netdev, length + NET_IP_ALIGN); + if (new_skb) { + skb_reserve(new_skb, NET_IP_ALIGN); + memcpy(new_skb->data - NET_IP_ALIGN, + skb->data - NET_IP_ALIGN, + length + NET_IP_ALIGN); + /* save the skb in buffer_info as good */ + buffer_info->skb = skb; + skb = new_skb; + } + /* else just continue with the old one */ + } + /* end copybreak code */ + skb_put(skb, length); + + /* Receive Checksum Offload */ + e1000_rx_checksum(adapter, + (u32)(status) | + ((u32)(rx_desc->errors) << 24), + le16_to_cpu(rx_desc->csum), skb); + + e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special); + +next_desc: + rx_desc->status = 0; + + /* return some buffers to hardware, one at a time is too slow */ + if (cleaned_count >= E1000_RX_BUFFER_WRITE) { + adapter->alloc_rx_buf(adapter, cleaned_count); + cleaned_count = 0; + } + + /* use prefetched values */ + rx_desc = next_rxd; + buffer_info = next_buffer; + } + rx_ring->next_to_clean = i; + + cleaned_count = e1000_desc_unused(rx_ring); + if (cleaned_count) + adapter->alloc_rx_buf(adapter, cleaned_count); + + adapter->total_rx_packets += total_rx_packets; + adapter->total_rx_bytes += total_rx_bytes; + return cleaned; +} + +static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, + u16 length) +{ + bi->page = NULL; + skb->len += length; + skb->data_len += length; + skb->truesize += length; +} + +static void e1000_put_txbuf(struct e1000_adapter *adapter, + struct e1000_buffer *buffer_info) +{ + if (buffer_info->dma) { + pci_unmap_page(adapter->pdev, buffer_info->dma, + buffer_info->length, PCI_DMA_TODEVICE); + buffer_info->dma = 0; + } + if (buffer_info->skb) { + dev_kfree_skb_any(buffer_info->skb); + buffer_info->skb = NULL; + } +} + +static void e1000_print_tx_hang(struct e1000_adapter *adapter) +{ + struct e1000_ring *tx_ring = adapter->tx_ring; + unsigned int i = tx_ring->next_to_clean; + unsigned int eop = tx_ring->buffer_info[i].next_to_watch; + struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); + struct net_device *netdev = adapter->netdev; + + /* detected Tx unit hang */ + ndev_err(netdev, + "Detected Tx Unit Hang:\n" + " TDH <%x>\n" + " TDT <%x>\n" + " next_to_use <%x>\n" + " next_to_clean <%x>\n" + "buffer_info[next_to_clean]:\n" + " time_stamp <%lx>\n" + " next_to_watch <%x>\n" + " jiffies <%lx>\n" + " next_to_watch.status <%x>\n", + readl(adapter->hw.hw_addr + tx_ring->head), + readl(adapter->hw.hw_addr + tx_ring->tail), + tx_ring->next_to_use, + tx_ring->next_to_clean, + tx_ring->buffer_info[eop].time_stamp, + eop, + jiffies, + eop_desc->upper.fields.status); +} + +/** + * e1000_clean_tx_irq - Reclaim resources after transmit completes + * @adapter: board private structure + * + * the return value indicates whether actual cleaning was done, there + * is no guarantee that everything was cleaned + **/ +static bool e1000_clean_tx_irq(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct e1000_hw *hw = &adapter->hw; + struct e1000_ring *tx_ring = adapter->tx_ring; + struct e1000_tx_desc *tx_desc, *eop_desc; + struct e1000_buffer *buffer_info; + unsigned int i, eop; + unsigned int count = 0; + bool cleaned = 0; + unsigned int total_tx_bytes = 0, total_tx_packets = 0; + + i = tx_ring->next_to_clean; + eop = tx_ring->buffer_info[i].next_to_watch; + eop_desc = E1000_TX_DESC(*tx_ring, eop); + + while (eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) { + for (cleaned = 0; !cleaned; ) { + tx_desc = E1000_TX_DESC(*tx_ring, i); + buffer_info = &tx_ring->buffer_info[i]; + cleaned = (i == eop); + + if (cleaned) { + struct sk_buff *skb = buffer_info->skb; + unsigned int segs, bytecount; + segs = skb_shinfo(skb)->gso_segs ?: 1; + /* multiply data chunks by size of headers */ + bytecount = ((segs - 1) * skb_headlen(skb)) + + skb->len; + total_tx_packets += segs; + total_tx_bytes += bytecount; + } + + e1000_put_txbuf(adapter, buffer_info); + tx_desc->upper.data = 0; + + i++; + if (i == tx_ring->count) + i = 0; + } + + eop = tx_ring->buffer_info[i].next_to_watch; + eop_desc = E1000_TX_DESC(*tx_ring, eop); +#define E1000_TX_WEIGHT 64 + /* weight of a sort for tx, to avoid endless transmit cleanup */ + if (count++ == E1000_TX_WEIGHT) + break; + } + + tx_ring->next_to_clean = i; + +#define TX_WAKE_THRESHOLD 32 + if (cleaned && netif_carrier_ok(netdev) && + e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { + /* Make sure that anybody stopping the queue after this + * sees the new next_to_clean. + */ + smp_mb(); + + if (netif_queue_stopped(netdev) && + !(test_bit(__E1000_DOWN, &adapter->state))) { + netif_wake_queue(netdev); + ++adapter->restart_queue; + } + } + + if (adapter->detect_tx_hung) { + /* Detect a transmit hang in hardware, this serializes the + * check with the clearing of time_stamp and movement of i */ + adapter->detect_tx_hung = 0; + if (tx_ring->buffer_info[eop].dma && + time_after(jiffies, tx_ring->buffer_info[eop].time_stamp + + (adapter->tx_timeout_factor * HZ)) + && !(er32(STATUS) & + E1000_STATUS_TXOFF)) { + e1000_print_tx_hang(adapter); + netif_stop_queue(netdev); + } + } + adapter->total_tx_bytes += total_tx_bytes; + adapter->total_tx_packets += total_tx_packets; + return cleaned; +} + +/** + * e1000_clean_rx_irq_jumbo - Send received data up the network stack; legacy + * @adapter: board private structure + * + * the return value indicates whether actual cleaning was done, there + * is no guarantee that everything was cleaned + **/ +static bool e1000_clean_rx_irq_jumbo(struct e1000_adapter *adapter, + int *work_done, int work_to_do) +{ + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + struct e1000_ring *rx_ring = adapter->rx_ring; + struct e1000_rx_desc *rx_desc, *next_rxd; + struct e1000_buffer *buffer_info, *next_buffer; + u32 length; + unsigned int i; + int cleaned_count = 0; + bool cleaned = 0; + unsigned int total_rx_bytes = 0, total_rx_packets = 0; + + i = rx_ring->next_to_clean; + rx_desc = E1000_RX_DESC(*rx_ring, i); + buffer_info = &rx_ring->buffer_info[i]; + + while (rx_desc->status & E1000_RXD_STAT_DD) { + struct sk_buff *skb; + u8 status; + + if (*work_done >= work_to_do) + break; + (*work_done)++; + + status = rx_desc->status; + skb = buffer_info->skb; + buffer_info->skb = NULL; + + i++; + if (i == rx_ring->count) + i = 0; + next_rxd = E1000_RX_DESC(*rx_ring, i); + prefetch(next_rxd); + + next_buffer = &rx_ring->buffer_info[i]; + + cleaned = 1; + cleaned_count++; + pci_unmap_page(pdev, + buffer_info->dma, + PAGE_SIZE, + PCI_DMA_FROMDEVICE); + buffer_info->dma = 0; + + length = le16_to_cpu(rx_desc->length); + + /* errors is only valid for DD + EOP descriptors */ + if ((status & E1000_RXD_STAT_EOP) && + (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) { + /* recycle both page and skb */ + buffer_info->skb = skb; + /* an error means any chain goes out the window too */ + if (rx_ring->rx_skb_top) + dev_kfree_skb(rx_ring->rx_skb_top); + rx_ring->rx_skb_top = NULL; + goto next_desc; + } + +#define rxtop rx_ring->rx_skb_top + if (!(status & E1000_RXD_STAT_EOP)) { + /* this descriptor is only the beginning (or middle) */ + if (!rxtop) { + /* this is the beginning of a chain */ + rxtop = skb; + skb_fill_page_desc(rxtop, 0, buffer_info->page, + 0, length); + } else { + /* this is the middle of a chain */ + skb_fill_page_desc(rxtop, + skb_shinfo(rxtop)->nr_frags, + buffer_info->page, 0, + length); + /* re-use the skb, only consumed the page */ + buffer_info->skb = skb; + } + e1000_consume_page(buffer_info, rxtop, length); + goto next_desc; + } else { + if (rxtop) { + /* end of the chain */ + skb_fill_page_desc(rxtop, + skb_shinfo(rxtop)->nr_frags, + buffer_info->page, 0, length); + /* re-use the current skb, we only consumed the + * page */ + buffer_info->skb = skb; + skb = rxtop; + rxtop = NULL; + e1000_consume_page(buffer_info, skb, length); + } else { + /* no chain, got EOP, this buf is the packet + * copybreak to save the put_page/alloc_page */ + if (length <= copybreak && + skb_tailroom(skb) >= length) { + u8 *vaddr; + vaddr = kmap_atomic(buffer_info->page, + KM_SKB_DATA_SOFTIRQ); + memcpy(skb_tail_pointer(skb), + vaddr, length); + kunmap_atomic(vaddr, + KM_SKB_DATA_SOFTIRQ); + /* re-use the page, so don't erase + * buffer_info->page */ + skb_put(skb, length); + } else { + skb_fill_page_desc(skb, 0, + buffer_info->page, 0, + length); + e1000_consume_page(buffer_info, skb, + length); + } + } + } + + /* Receive Checksum Offload XXX recompute due to CRC strip? */ + e1000_rx_checksum(adapter, + (u32)(status) | + ((u32)(rx_desc->errors) << 24), + le16_to_cpu(rx_desc->csum), skb); + + pskb_trim(skb, skb->len - 4); + + /* probably a little skewed due to removing CRC */ + total_rx_bytes += skb->len; + total_rx_packets++; + + /* eth type trans needs skb->data to point to something */ + if (!pskb_may_pull(skb, ETH_HLEN)) { + ndev_err(netdev, "__pskb_pull_tail failed.\n"); + dev_kfree_skb(skb); + goto next_desc; + } + + e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special); + +next_desc: + rx_desc->status = 0; + + /* return some buffers to hardware, one at a time is too slow */ + if (cleaned_count >= E1000_RX_BUFFER_WRITE) { + adapter->alloc_rx_buf(adapter, cleaned_count); + cleaned_count = 0; + } + + /* use prefetched values */ + rx_desc = next_rxd; + buffer_info = next_buffer; + } + rx_ring->next_to_clean = i; + + cleaned_count = e1000_desc_unused(rx_ring); + if (cleaned_count) + adapter->alloc_rx_buf(adapter, cleaned_count); + + adapter->total_rx_packets += total_rx_packets; + adapter->total_rx_bytes += total_rx_bytes; + return cleaned; +} + +/** + * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split + * @adapter: board private structure + * + * the return value indicates whether actual cleaning was done, there + * is no guarantee that everything was cleaned + **/ +static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, + int *work_done, int work_to_do) +{ + union e1000_rx_desc_packet_split *rx_desc, *next_rxd; + struct net_device *netdev = adapter->netdev; + struct pci_dev *pdev = adapter->pdev; + struct e1000_ring *rx_ring = adapter->rx_ring; + struct e1000_buffer *buffer_info, *next_buffer; + struct e1000_ps_page *ps_page; + struct sk_buff *skb; + unsigned int i, j; + u32 length, staterr; + int cleaned_count = 0; + bool cleaned = 0; + unsigned int total_rx_bytes = 0, total_rx_packets = 0; + + i = rx_ring->next_to_clean; + rx_desc = E1000_RX_DESC_PS(*rx_ring, i); + staterr = le32_to_cpu(rx_desc->wb.middle.status_error); + buffer_info = &rx_ring->buffer_info[i]; + + while (staterr & E1000_RXD_STAT_DD) { + if (*work_done >= work_to_do) + break; + (*work_done)++; + skb = buffer_info->skb; + + /* in the packet split case this is header only */ + prefetch(skb->data - NET_IP_ALIGN); + + i++; + if (i == rx_ring->count) + i = 0; + next_rxd = E1000_RX_DESC_PS(*rx_ring, i); + prefetch(next_rxd); + + next_buffer = &rx_ring->buffer_info[i]; + + cleaned = 1; + cleaned_count++; + pci_unmap_single(pdev, buffer_info->dma, + adapter->rx_ps_bsize0, + PCI_DMA_FROMDEVICE); + buffer_info->dma = 0; + + if (!(staterr & E1000_RXD_STAT_EOP)) { + ndev_dbg(netdev, "%s: Packet Split buffers didn't pick " + "up the full packet\n", netdev->name); + dev_kfree_skb_irq(skb); + goto next_desc; + } + + if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { + dev_kfree_skb_irq(skb); + goto next_desc; + } + + length = le16_to_cpu(rx_desc->wb.middle.length0); + + if (!length) { + ndev_dbg(netdev, "%s: Last part of the packet spanning" + " multiple descriptors\n", netdev->name); + dev_kfree_skb_irq(skb); + goto next_desc; + } + + /* Good Receive */ + skb_put(skb, length); + + { + /* this looks ugly, but it seems compiler issues make it + more efficient than reusing j */ + int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); + + /* page alloc/put takes too long and effects small packet + * throughput, so unsplit small packets and save the alloc/put*/ + if (l1 && (l1 <= copybreak) && + ((length + l1) <= adapter->rx_ps_bsize0)) { + u8 *vaddr; + + ps_page = &rx_ring->ps_pages[i * PS_PAGE_BUFFERS]; + + /* there is no documentation about how to call + * kmap_atomic, so we can't hold the mapping + * very long */ + pci_dma_sync_single_for_cpu(pdev, ps_page->dma, + PAGE_SIZE, PCI_DMA_FROMDEVICE); + vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ); + memcpy(skb_tail_pointer(skb), vaddr, l1); + kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); + pci_dma_sync_single_for_device(pdev, ps_page->dma, + PAGE_SIZE, PCI_DMA_FROMDEVICE); + /* remove the CRC */ + l1 -= 4; + skb_put(skb, l1); + goto copydone; + } /* if */ + } + + for (j = 0; j < PS_PAGE_BUFFERS; j++) { + length = le16_to_cpu(rx_desc->wb.upper.length[j]); + if (!length) + break; + + ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS) + j]; + pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE, + PCI_DMA_FROMDEVICE); + ps_page->dma = 0; + skb_fill_page_desc(skb, j, ps_page->page, 0, length); + ps_page->page = NULL; + skb->len += length; + skb->data_len += length; + skb->truesize += length; + } + + /* strip the ethernet crc, problem is we're using pages now so + * this whole operation can get a little cpu intensive */ + pskb_trim(skb, skb->len - 4); + +copydone: + total_rx_bytes += skb->len; + total_rx_packets++; + + e1000_rx_checksum(adapter, staterr, le16_to_cpu( + rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); + + if (rx_desc->wb.upper.header_status & + cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) + adapter->rx_hdr_split++; + + e1000_receive_skb(adapter, netdev, skb, + staterr, rx_desc->wb.middle.vlan); + +next_desc: + rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); + buffer_info->skb = NULL; + + /* return some buffers to hardware, one at a time is too slow */ + if (cleaned_count >= E1000_RX_BUFFER_WRITE) { + adapter->alloc_rx_buf(adapter, cleaned_count); + cleaned_count = 0; + } + + /* use prefetched values */ + rx_desc = next_rxd; + buffer_info = next_buffer; + + staterr = le32_to_cpu(rx_desc->wb.middle.status_error); + } + rx_ring->next_to_clean = i; + + cleaned_count = e1000_desc_unused(rx_ring); + if (cleaned_count) + adapter->alloc_rx_buf(adapter, cleaned_count); + + adapter->total_rx_packets += total_rx_packets; + adapter->total_rx_bytes += total_rx_bytes; + return cleaned; +} + +/** + * e1000_clean_rx_ring - Free Rx Buffers per Queue + * @adapter: board private structure + **/ +static void e1000_clean_rx_ring(struct e1000_adapter *adapter) +{ + struct e1000_ring *rx_ring = adapter->rx_ring; + struct e1000_buffer *buffer_info; + struct e1000_ps_page *ps_page; + struct pci_dev *pdev = adapter->pdev; + unsigned long size; + unsigned int i, j; + + /* Free all the Rx ring sk_buffs */ + for (i = 0; i < rx_ring->count; i++) { + buffer_info = &rx_ring->buffer_info[i]; + if (buffer_info->dma) { + if (adapter->clean_rx == e1000_clean_rx_irq) + pci_unmap_single(pdev, buffer_info->dma, + adapter->rx_buffer_len, + PCI_DMA_FROMDEVICE); + else if (adapter->clean_rx == e1000_clean_rx_irq_jumbo) + pci_unmap_page(pdev, buffer_info->dma, + PAGE_SIZE, PCI_DMA_FROMDEVICE); + else if (adapter->clean_rx == e1000_clean_rx_irq_ps) + pci_unmap_single(pdev, buffer_info->dma, + adapter->rx_ps_bsize0, + PCI_DMA_FROMDEVICE); + buffer_info->dma = 0; + } + + if (buffer_info->page) { + put_page(buffer_info->page); + buffer_info->page = NULL; + } + + if (buffer_info->skb) { + dev_kfree_skb(buffer_info->skb); + buffer_info->skb = NULL; + } + + for (j = 0; j < PS_PAGE_BUFFERS; j++) { + ps_page = &rx_ring->ps_pages[(i * PS_PAGE_BUFFERS) + + j]; + if (!ps_page->page) + break; + pci_unmap_page(pdev, ps_page->dma, PAGE_SIZE, + PCI_DMA_FROMDEVICE); + ps_page->dma = 0; + put_page(ps_page->page); + ps_page->page = NULL; + } + } + + /* there also may be some cached data from a chained receive */ + if (rx_ring->rx_skb_top) { + dev_kfree_skb(rx_ring->rx_skb_top); + rx_ring->rx_skb_top = NULL; + } + + size = sizeof(struct e1000_buffer) * rx_ring->count; + memset(rx_ring->buffer_info, 0, size); + size = sizeof(struct e1000_ps_page) + * (rx_ring->count * PS_PAGE_BUFFERS); + memset(rx_ring->ps_pages, 0, size); + + /* Zero out the descriptor ring */ + memset(rx_ring->desc, 0, rx_ring->size); + + rx_ring->next_to_clean = 0; + rx_ring->next_to_use = 0; + + writel(0, adapter->hw.hw_addr + rx_ring->head); + writel(0, adapter->hw.hw_addr + rx_ring->tail); +} + +/** + * e1000_intr_msi - Interrupt Handler + * @irq: interrupt number + * @data: pointer to a network interface device structure + **/ +static irqreturn_t e1000_intr_msi(int irq, void *data) +{ + struct net_device *netdev = data; + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + u32 icr = er32(ICR); + + /* read ICR disables interrupts using IAM, so keep up with our + * enable/disable accounting */ + atomic_inc(&adapter->irq_sem); + + if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { + hw->mac.get_link_status = 1; + /* ICH8 workaround-- Call gig speed drop workaround on cable + * disconnect (LSC) before accessing any PHY registers */ + if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && + (!(er32(STATUS) & E1000_STATUS_LU))) + e1000e_gig_downshift_workaround_ich8lan(hw); + + /* 80003ES2LAN workaround-- For packet buffer work-around on + * link down event; disable receives here in the ISR and reset + * adapter in watchdog */ + if (netif_carrier_ok(netdev) && + adapter->flags & FLAG_RX_NEEDS_RESTART) { + /* disable receives */ + u32 rctl = er32(RCTL); + ew32(RCTL, rctl & ~E1000_RCTL_EN); + } + /* guard against interrupt when we're going down */ + if (!test_bit(__E1000_DOWN, &adapter->state)) + mod_timer(&adapter->watchdog_timer, jiffies + 1); + } + + if (netif_rx_schedule_prep(netdev, &adapter->napi)) { + adapter->total_tx_bytes = 0; + adapter->total_tx_packets = 0; + adapter->total_rx_bytes = 0; + adapter->total_rx_packets = 0; + __netif_rx_schedule(netdev, &adapter->napi); + } else { + atomic_dec(&adapter->irq_sem); + } + + return IRQ_HANDLED; +} + +/** + * e1000_intr - Interrupt Handler + * @irq: interrupt number + * @data: pointer to a network interface device structure + **/ +static irqreturn_t e1000_intr(int irq, void *data) +{ + struct net_device *netdev = data; + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + + u32 rctl, icr = er32(ICR); + if (!icr) + return IRQ_NONE; /* Not our interrupt */ + + /* IMS will not auto-mask if INT_ASSERTED is not set, and if it is + * not set, then the adapter didn't send an interrupt */ + if (!(icr & E1000_ICR_INT_ASSERTED)) + return IRQ_NONE; + + /* Interrupt Auto-Mask...upon reading ICR, + * interrupts are masked. No need for the + * IMC write, but it does mean we should + * account for it ASAP. */ + atomic_inc(&adapter->irq_sem); + + if (icr & (E1000_ICR_RXSEQ | E1000_ICR_LSC)) { + hw->mac.get_link_status = 1; + /* ICH8 workaround-- Call gig speed drop workaround on cable + * disconnect (LSC) before accessing any PHY registers */ + if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && + (!(er32(STATUS) & E1000_STATUS_LU))) + e1000e_gig_downshift_workaround_ich8lan(hw); + + /* 80003ES2LAN workaround-- + * For packet buffer work-around on link down event; + * disable receives here in the ISR and + * reset adapter in watchdog + */ + if (netif_carrier_ok(netdev) && + (adapter->flags & FLAG_RX_NEEDS_RESTART)) { + /* disable receives */ + rctl = er32(RCTL); + ew32(RCTL, rctl & ~E1000_RCTL_EN); + } + /* guard against interrupt when we're going down */ + if (!test_bit(__E1000_DOWN, &adapter->state)) + mod_timer(&adapter->watchdog_timer, jiffies + 1); + } + + if (netif_rx_schedule_prep(netdev, &adapter->napi)) { + adapter->total_tx_bytes = 0; + adapter->total_tx_packets = 0; + adapter->total_rx_bytes = 0; + adapter->total_rx_packets = 0; + __netif_rx_schedule(netdev, &adapter->napi); + } else { + atomic_dec(&adapter->irq_sem); + } + + return IRQ_HANDLED; +} + +static int e1000_request_irq(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + void (*handler) = &e1000_intr; + int irq_flags = IRQF_SHARED; + int err; + + err = pci_enable_msi(adapter->pdev); + if (err) { + ndev_warn(netdev, + "Unable to allocate MSI interrupt Error: %d\n", err); + } else { + adapter->flags |= FLAG_MSI_ENABLED; + handler = &e1000_intr_msi; + irq_flags = 0; + } + + err = request_irq(adapter->pdev->irq, handler, irq_flags, netdev->name, + netdev); + if (err) { + if (adapter->flags & FLAG_MSI_ENABLED) + pci_disable_msi(adapter->pdev); + ndev_err(netdev, + "Unable to allocate interrupt Error: %d\n", err); + } + + return err; +} + +static void e1000_free_irq(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + + free_irq(adapter->pdev->irq, netdev); + if (adapter->flags & FLAG_MSI_ENABLED) { + pci_disable_msi(adapter->pdev); + adapter->flags &= ~FLAG_MSI_ENABLED; + } +} + +/** + * e1000_irq_disable - Mask off interrupt generation on the NIC + **/ +static void e1000_irq_disable(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + + atomic_inc(&adapter->irq_sem); + ew32(IMC, ~0); + e1e_flush(); + synchronize_irq(adapter->pdev->irq); +} + +/** + * e1000_irq_enable - Enable default interrupt generation settings + **/ +static void e1000_irq_enable(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + + if (atomic_dec_and_test(&adapter->irq_sem)) { + ew32(IMS, IMS_ENABLE_MASK); + e1e_flush(); + } +} + +/** + * e1000_get_hw_control - get control of the h/w from f/w + * @adapter: address of board private structure + * + * e1000_get_hw_control sets {CTRL_EXT|FWSM}:DRV_LOAD bit. + * For ASF and Pass Through versions of f/w this means that + * the driver is loaded. For AMT version (only with 82573) + * of the f/w this means that the network i/f is open. + **/ +static void e1000_get_hw_control(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u32 ctrl_ext; + u32 swsm; + + /* Let firmware know the driver has taken over */ + if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { + swsm = er32(SWSM); + ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); + } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { + ctrl_ext = er32(CTRL_EXT); + ew32(CTRL_EXT, + ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); + } +} + +/** + * e1000_release_hw_control - release control of the h/w to f/w + * @adapter: address of board private structure + * + * e1000_release_hw_control resets {CTRL_EXT|FWSM}:DRV_LOAD bit. + * For ASF and Pass Through versions of f/w this means that the + * driver is no longer loaded. For AMT version (only with 82573) i + * of the f/w this means that the network i/f is closed. + * + **/ +static void e1000_release_hw_control(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u32 ctrl_ext; + u32 swsm; + + /* Let firmware taken over control of h/w */ + if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { + swsm = er32(SWSM); + ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); + } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { + ctrl_ext = er32(CTRL_EXT); + ew32(CTRL_EXT, + ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); + } +} + +static void e1000_release_manageability(struct e1000_adapter *adapter) +{ + if (adapter->flags & FLAG_MNG_PT_ENABLED) { + struct e1000_hw *hw = &adapter->hw; + + u32 manc = er32(MANC); + + /* re-enable hardware interception of ARP */ + manc |= E1000_MANC_ARP_EN; + manc &= ~E1000_MANC_EN_MNG2HOST; + + /* don't explicitly have to mess with MANC2H since + * MANC has an enable disable that gates MANC2H */ + ew32(MANC, manc); + } +} + +/** + * @e1000_alloc_ring - allocate memory for a ring structure + **/ +static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, + struct e1000_ring *ring) +{ + struct pci_dev *pdev = adapter->pdev; + + ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, + GFP_KERNEL); + if (!ring->desc) + return -ENOMEM; + + return 0; +} + +/** + * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) + * @adapter: board private structure + * + * Return 0 on success, negative on failure + **/ +int e1000e_setup_tx_resources(struct e1000_adapter *adapter) +{ + struct e1000_ring *tx_ring = adapter->tx_ring; + int err = -ENOMEM, size; + + size = sizeof(struct e1000_buffer) * tx_ring->count; + tx_ring->buffer_info = vmalloc(size); + if (!tx_ring->buffer_info) + goto err; + memset(tx_ring->buffer_info, 0, size); + + /* round up to nearest 4K */ + tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); + tx_ring->size = ALIGN(tx_ring->size, 4096); + + err = e1000_alloc_ring_dma(adapter, tx_ring); + if (err) + goto err; + + tx_ring->next_to_use = 0; + tx_ring->next_to_clean = 0; + spin_lock_init(&adapter->tx_queue_lock); + + return 0; +err: + vfree(tx_ring->buffer_info); + ndev_err(adapter->netdev, + "Unable to allocate memory for the transmit descriptor ring\n"); + return err; +} + +/** + * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) + * @adapter: board private structure + * + * Returns 0 on success, negative on failure + **/ +int e1000e_setup_rx_resources(struct e1000_adapter *adapter) +{ + struct e1000_ring *rx_ring = adapter->rx_ring; + int size, desc_len, err = -ENOMEM; + + size = sizeof(struct e1000_buffer) * rx_ring->count; + rx_ring->buffer_info = vmalloc(size); + if (!rx_ring->buffer_info) + goto err; + memset(rx_ring->buffer_info, 0, size); + + rx_ring->ps_pages = kcalloc(rx_ring->count * PS_PAGE_BUFFERS, + sizeof(struct e1000_ps_page), + GFP_KERNEL); + if (!rx_ring->ps_pages) + goto err; + + desc_len = sizeof(union e1000_rx_desc_packet_split); + + /* Round up to nearest 4K */ + rx_ring->size = rx_ring->count * desc_len; + rx_ring->size = ALIGN(rx_ring->size, 4096); + + err = e1000_alloc_ring_dma(adapter, rx_ring); + if (err) + goto err; + + rx_ring->next_to_clean = 0; + rx_ring->next_to_use = 0; + rx_ring->rx_skb_top = NULL; + + return 0; +err: + vfree(rx_ring->buffer_info); + kfree(rx_ring->ps_pages); + ndev_err(adapter->netdev, + "Unable to allocate memory for the transmit descriptor ring\n"); + return err; +} + +/** + * e1000_clean_tx_ring - Free Tx Buffers + * @adapter: board private structure + **/ +static void e1000_clean_tx_ring(struct e1000_adapter *adapter) +{ + struct e1000_ring *tx_ring = adapter->tx_ring; + struct e1000_buffer *buffer_info; + unsigned long size; + unsigned int i; + + for (i = 0; i < tx_ring->count; i++) { + buffer_info = &tx_ring->buffer_info[i]; + e1000_put_txbuf(adapter, buffer_info); + } + + size = sizeof(struct e1000_buffer) * tx_ring->count; + memset(tx_ring->buffer_info, 0, size); + + memset(tx_ring->desc, 0, tx_ring->size); + + tx_ring->next_to_use = 0; + tx_ring->next_to_clean = 0; + + writel(0, adapter->hw.hw_addr + tx_ring->head); + writel(0, adapter->hw.hw_addr + tx_ring->tail); +} + +/** + * e1000e_free_tx_resources - Free Tx Resources per Queue + * @adapter: board private structure + * + * Free all transmit software resources + **/ +void e1000e_free_tx_resources(struct e1000_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + struct e1000_ring *tx_ring = adapter->tx_ring; + + e1000_clean_tx_ring(adapter); + + vfree(tx_ring->buffer_info); + tx_ring->buffer_info = NULL; + + dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, + tx_ring->dma); + tx_ring->desc = NULL; +} + +/** + * e1000e_free_rx_resources - Free Rx Resources + * @adapter: board private structure + * + * Free all receive software resources + **/ + +void e1000e_free_rx_resources(struct e1000_adapter *adapter) +{ + struct pci_dev *pdev = adapter->pdev; + struct e1000_ring *rx_ring = adapter->rx_ring; + + e1000_clean_rx_ring(adapter); + + vfree(rx_ring->buffer_info); + rx_ring->buffer_info = NULL; + + kfree(rx_ring->ps_pages); + rx_ring->ps_pages = NULL; + + dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, + rx_ring->dma); + rx_ring->desc = NULL; +} + +/** + * e1000_update_itr - update the dynamic ITR value based on statistics + * Stores a new ITR value based on packets and byte + * counts during the last interrupt. The advantage of per interrupt + * computation is faster updates and more accurate ITR for the current + * traffic pattern. Constants in this function were computed + * based on theoretical maximum wire speed and thresholds were set based + * on testing data as well as attempting to minimize response time + * while increasing bulk throughput. + * this functionality is controlled by the InterruptThrottleRate module + * parameter (see e1000_param.c) + * @adapter: pointer to adapter + * @itr_setting: current adapter->itr + * @packets: the number of packets during this measurement interval + * @bytes: the number of bytes during this measurement interval + **/ +static unsigned int e1000_update_itr(struct e1000_adapter *adapter, + u16 itr_setting, int packets, + int bytes) +{ + unsigned int retval = itr_setting; + + if (packets == 0) + goto update_itr_done; + + switch (itr_setting) { + case lowest_latency: + /* handle TSO and jumbo frames */ + if (bytes/packets > 8000) + retval = bulk_latency; + else if ((packets < 5) && (bytes > 512)) { + retval = low_latency; + } + break; + case low_latency: /* 50 usec aka 20000 ints/s */ + if (bytes > 10000) { + /* this if handles the TSO accounting */ + if (bytes/packets > 8000) { + retval = bulk_latency; + } else if ((packets < 10) || ((bytes/packets) > 1200)) { + retval = bulk_latency; + } else if ((packets > 35)) { + retval = lowest_latency; + } + } else if (bytes/packets > 2000) { + retval = bulk_latency; + } else if (packets <= 2 && bytes < 512) { + retval = lowest_latency; + } + break; + case bulk_latency: /* 250 usec aka 4000 ints/s */ + if (bytes > 25000) { + if (packets > 35) { + retval = low_latency; + } + } else if (bytes < 6000) { + retval = low_latency; + } + break; + } + +update_itr_done: + return retval; +} + +static void e1000_set_itr(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u16 current_itr; + u32 new_itr = adapter->itr; + + /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ + if (adapter->link_speed != SPEED_1000) { + current_itr = 0; + new_itr = 4000; + goto set_itr_now; + } + + adapter->tx_itr = e1000_update_itr(adapter, + adapter->tx_itr, + adapter->total_tx_packets, + adapter->total_tx_bytes); + /* conservative mode (itr 3) eliminates the lowest_latency setting */ + if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) + adapter->tx_itr = low_latency; + + adapter->rx_itr = e1000_update_itr(adapter, + adapter->rx_itr, + adapter->total_rx_packets, + adapter->total_rx_bytes); + /* conservative mode (itr 3) eliminates the lowest_latency setting */ + if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) + adapter->rx_itr = low_latency; + + current_itr = max(adapter->rx_itr, adapter->tx_itr); + + switch (current_itr) { + /* counts and packets in update_itr are dependent on these numbers */ + case lowest_latency: + new_itr = 70000; + break; + case low_latency: + new_itr = 20000; /* aka hwitr = ~200 */ + break; + case bulk_latency: + new_itr = 4000; + break; + default: + break; + } + +set_itr_now: + if (new_itr != adapter->itr) { + /* this attempts to bias the interrupt rate towards Bulk + * by adding intermediate steps when interrupt rate is + * increasing */ + new_itr = new_itr > adapter->itr ? + min(adapter->itr + (new_itr >> 2), new_itr) : + new_itr; + adapter->itr = new_itr; + ew32(ITR, 1000000000 / (new_itr * 256)); + } +} + +/** + * e1000_clean - NAPI Rx polling callback + * @adapter: board private structure + **/ +static int e1000_clean(struct napi_struct *napi, int budget) +{ + struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); + struct net_device *poll_dev = adapter->netdev; + int tx_cleaned = 0, work_done = 0; + + /* Must NOT use netdev_priv macro here. */ + adapter = poll_dev->priv; + + /* Keep link state information with original netdev */ + if (!netif_carrier_ok(poll_dev)) + goto quit_polling; + + /* e1000_clean is called per-cpu. This lock protects + * tx_ring from being cleaned by multiple cpus + * simultaneously. A failure obtaining the lock means + * tx_ring is currently being cleaned anyway. */ + if (spin_trylock(&adapter->tx_queue_lock)) { + tx_cleaned = e1000_clean_tx_irq(adapter); + spin_unlock(&adapter->tx_queue_lock); + } + + adapter->clean_rx(adapter, &work_done, budget); + + /* If no Tx and not enough Rx work done, exit the polling mode */ + if ((!tx_cleaned && (work_done < budget)) || + !netif_running(poll_dev)) { +quit_polling: + if (adapter->itr_setting & 3) + e1000_set_itr(adapter); + netif_rx_complete(poll_dev, napi); + e1000_irq_enable(adapter); + } + + return work_done; +} + +static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + u32 vfta, index; + + /* don't update vlan cookie if already programmed */ + if ((adapter->hw.mng_cookie.status & + E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && + (vid == adapter->mng_vlan_id)) + return; + /* add VID to filter table */ + index = (vid >> 5) & 0x7F; + vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); + vfta |= (1 << (vid & 0x1F)); + e1000e_write_vfta(hw, index, vfta); +} + +static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + u32 vfta, index; + + e1000_irq_disable(adapter); + vlan_group_set_device(adapter->vlgrp, vid, NULL); + e1000_irq_enable(adapter); + + if ((adapter->hw.mng_cookie.status & + E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && + (vid == adapter->mng_vlan_id)) { + /* release control to f/w */ + e1000_release_hw_control(adapter); + return; + } + + /* remove VID from filter table */ + index = (vid >> 5) & 0x7F; + vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); + vfta &= ~(1 << (vid & 0x1F)); + e1000e_write_vfta(hw, index, vfta); +} + +static void e1000_update_mng_vlan(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + u16 vid = adapter->hw.mng_cookie.vlan_id; + u16 old_vid = adapter->mng_vlan_id; + + if (!adapter->vlgrp) + return; + + if (!vlan_group_get_device(adapter->vlgrp, vid)) { + adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; + if (adapter->hw.mng_cookie.status & + E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { + e1000_vlan_rx_add_vid(netdev, vid); + adapter->mng_vlan_id = vid; + } + + if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && + (vid != old_vid) && + !vlan_group_get_device(adapter->vlgrp, old_vid)) + e1000_vlan_rx_kill_vid(netdev, old_vid); + } else { + adapter->mng_vlan_id = vid; + } +} + + +static void e1000_vlan_rx_register(struct net_device *netdev, + struct vlan_group *grp) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + u32 ctrl, rctl; + + e1000_irq_disable(adapter); + adapter->vlgrp = grp; + + if (grp) { + /* enable VLAN tag insert/strip */ + ctrl = er32(CTRL); + ctrl |= E1000_CTRL_VME; + ew32(CTRL, ctrl); + + if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { + /* enable VLAN receive filtering */ + rctl = er32(RCTL); + rctl |= E1000_RCTL_VFE; + rctl &= ~E1000_RCTL_CFIEN; + ew32(RCTL, rctl); + e1000_update_mng_vlan(adapter); + } + } else { + /* disable VLAN tag insert/strip */ + ctrl = er32(CTRL); + ctrl &= ~E1000_CTRL_VME; + ew32(CTRL, ctrl); + + if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { + /* disable VLAN filtering */ + rctl = er32(RCTL); + rctl &= ~E1000_RCTL_VFE; + ew32(RCTL, rctl); + if (adapter->mng_vlan_id != + (u16)E1000_MNG_VLAN_NONE) { + e1000_vlan_rx_kill_vid(netdev, + adapter->mng_vlan_id); + adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; + } + } + } + + e1000_irq_enable(adapter); +} + +static void e1000_restore_vlan(struct e1000_adapter *adapter) +{ + u16 vid; + + e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); + + if (!adapter->vlgrp) + return; + + for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { + if (!vlan_group_get_device(adapter->vlgrp, vid)) + continue; + e1000_vlan_rx_add_vid(adapter->netdev, vid); + } +} + +static void e1000_init_manageability(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u32 manc, manc2h; + + if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) + return; + + manc = er32(MANC); + + /* disable hardware interception of ARP */ + manc &= ~(E1000_MANC_ARP_EN); + + /* enable receiving management packets to the host. this will probably + * generate destination unreachable messages from the host OS, but + * the packets will be handled on SMBUS */ + manc |= E1000_MANC_EN_MNG2HOST; + manc2h = er32(MANC2H); +#define E1000_MNG2HOST_PORT_623 (1 << 5) +#define E1000_MNG2HOST_PORT_664 (1 << 6) + manc2h |= E1000_MNG2HOST_PORT_623; + manc2h |= E1000_MNG2HOST_PORT_664; + ew32(MANC2H, manc2h); + ew32(MANC, manc); +} + +/** + * e1000_configure_tx - Configure 8254x Transmit Unit after Reset + * @adapter: board private structure + * + * Configure the Tx unit of the MAC after a reset. + **/ +static void e1000_configure_tx(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + struct e1000_ring *tx_ring = adapter->tx_ring; + u64 tdba; + u32 tdlen, tctl, tipg, tarc; + u32 ipgr1, ipgr2; + + /* Setup the HW Tx Head and Tail descriptor pointers */ + tdba = tx_ring->dma; + tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); + ew32(TDBAL, (tdba & DMA_32BIT_MASK)); + ew32(TDBAH, (tdba >> 32)); + ew32(TDLEN, tdlen); + ew32(TDH, 0); + ew32(TDT, 0); + tx_ring->head = E1000_TDH; + tx_ring->tail = E1000_TDT; + + /* Set the default values for the Tx Inter Packet Gap timer */ + tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */ + ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */ + ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */ + + if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN) + ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */ + + tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; + tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; + ew32(TIPG, tipg); + + /* Set the Tx Interrupt Delay register */ + ew32(TIDV, adapter->tx_int_delay); + /* tx irq moderation */ + ew32(TADV, adapter->tx_abs_int_delay); + + /* Program the Transmit Control Register */ + tctl = er32(TCTL); + tctl &= ~E1000_TCTL_CT; + tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | + (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); + + if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { + tarc = er32(TARC0); + /* set the speed mode bit, we'll clear it if we're not at + * gigabit link later */ +#define SPEED_MODE_BIT (1 << 21) + tarc |= SPEED_MODE_BIT; + ew32(TARC0, tarc); + } + + /* errata: program both queues to unweighted RR */ + if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { + tarc = er32(TARC0); + tarc |= 1; + ew32(TARC0, tarc); + tarc = er32(TARC1); + tarc |= 1; + ew32(TARC1, tarc); + } + + e1000e_config_collision_dist(hw); + + /* Setup Transmit Descriptor Settings for eop descriptor */ + adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; + + /* only set IDE if we are delaying interrupts using the timers */ + if (adapter->tx_int_delay) + adapter->txd_cmd |= E1000_TXD_CMD_IDE; + + /* enable Report Status bit */ + adapter->txd_cmd |= E1000_TXD_CMD_RS; + + ew32(TCTL, tctl); + + adapter->tx_queue_len = adapter->netdev->tx_queue_len; +} + +/** + * e1000_setup_rctl - configure the receive control registers + * @adapter: Board private structure + **/ +#define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ + (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) +static void e1000_setup_rctl(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u32 rctl, rfctl; + u32 psrctl = 0; + u32 pages = 0; + + /* Program MC offset vector base */ + rctl = er32(RCTL); + rctl &= ~(3 << E1000_RCTL_MO_SHIFT); + rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | + E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | + (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); + + /* Do not Store bad packets */ + rctl &= ~E1000_RCTL_SBP; + + /* Enable Long Packet receive */ + if (adapter->netdev->mtu <= ETH_DATA_LEN) + rctl &= ~E1000_RCTL_LPE; + else + rctl |= E1000_RCTL_LPE; + + /* Setup buffer sizes */ + rctl &= ~E1000_RCTL_SZ_4096; + rctl |= E1000_RCTL_BSEX; + switch (adapter->rx_buffer_len) { + case 256: + rctl |= E1000_RCTL_SZ_256; + rctl &= ~E1000_RCTL_BSEX; + break; + case 512: + rctl |= E1000_RCTL_SZ_512; + rctl &= ~E1000_RCTL_BSEX; + break; + case 1024: + rctl |= E1000_RCTL_SZ_1024; + rctl &= ~E1000_RCTL_BSEX; + break; + case 2048: + default: + rctl |= E1000_RCTL_SZ_2048; + rctl &= ~E1000_RCTL_BSEX; + break; + case 4096: + rctl |= E1000_RCTL_SZ_4096; + break; + case 8192: + rctl |= E1000_RCTL_SZ_8192; + break; + case 16384: + rctl |= E1000_RCTL_SZ_16384; + break; + } + + /* + * 82571 and greater support packet-split where the protocol + * header is placed in skb->data and the packet data is + * placed in pages hanging off of skb_shinfo(skb)->nr_frags. + * In the case of a non-split, skb->data is linearly filled, + * followed by the page buffers. Therefore, skb->data is + * sized to hold the largest protocol header. + * + * allocations using alloc_page take too long for regular MTU + * so only enable packet split for jumbo frames + * + * Using pages when the page size is greater than 16k wastes + * a lot of memory, since we allocate 3 pages at all times + * per packet. + */ + adapter->rx_ps_pages = 0; + pages = PAGE_USE_COUNT(adapter->netdev->mtu); + if ((pages <= 3) && (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) + adapter->rx_ps_pages = pages; + + if (adapter->rx_ps_pages) { + /* Configure extra packet-split registers */ + rfctl = er32(RFCTL); + rfctl |= E1000_RFCTL_EXTEN; + /* disable packet split support for IPv6 extension headers, + * because some malformed IPv6 headers can hang the RX */ + rfctl |= (E1000_RFCTL_IPV6_EX_DIS | + E1000_RFCTL_NEW_IPV6_EXT_DIS); + + ew32(RFCTL, rfctl); + + /* disable the stripping of CRC because it breaks + * BMC firmware connected over SMBUS */ + rctl |= E1000_RCTL_DTYP_PS /* | E1000_RCTL_SECRC */; + + psrctl |= adapter->rx_ps_bsize0 >> + E1000_PSRCTL_BSIZE0_SHIFT; + + switch (adapter->rx_ps_pages) { + case 3: + psrctl |= PAGE_SIZE << + E1000_PSRCTL_BSIZE3_SHIFT; + case 2: + psrctl |= PAGE_SIZE << + E1000_PSRCTL_BSIZE2_SHIFT; + case 1: + psrctl |= PAGE_SIZE >> + E1000_PSRCTL_BSIZE1_SHIFT; + break; + } + + ew32(PSRCTL, psrctl); + } + + ew32(RCTL, rctl); +} + +/** + * e1000_configure_rx - Configure Receive Unit after Reset + * @adapter: board private structure + * + * Configure the Rx unit of the MAC after a reset. + **/ +static void e1000_configure_rx(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + struct e1000_ring *rx_ring = adapter->rx_ring; + u64 rdba; + u32 rdlen, rctl, rxcsum, ctrl_ext; + + if (adapter->rx_ps_pages) { + /* this is a 32 byte descriptor */ + rdlen = rx_ring->count * + sizeof(union e1000_rx_desc_packet_split); + adapter->clean_rx = e1000_clean_rx_irq_ps; + adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; + } else if (adapter->netdev->mtu > ETH_FRAME_LEN + VLAN_HLEN + 4) { + rdlen = rx_ring->count * + sizeof(struct e1000_rx_desc); + adapter->clean_rx = e1000_clean_rx_irq_jumbo; + adapter->alloc_rx_buf = e1000_alloc_rx_buffers_jumbo; + } else { + rdlen = rx_ring->count * + sizeof(struct e1000_rx_desc); + adapter->clean_rx = e1000_clean_rx_irq; + adapter->alloc_rx_buf = e1000_alloc_rx_buffers; + } + + /* disable receives while setting up the descriptors */ + rctl = er32(RCTL); + ew32(RCTL, rctl & ~E1000_RCTL_EN); + e1e_flush(); + msleep(10); + + /* set the Receive Delay Timer Register */ + ew32(RDTR, adapter->rx_int_delay); + + /* irq moderation */ + ew32(RADV, adapter->rx_abs_int_delay); + if (adapter->itr_setting != 0) + ew32(ITR, + 1000000000 / (adapter->itr * 256)); + + ctrl_ext = er32(CTRL_EXT); + /* Reset delay timers after every interrupt */ + ctrl_ext |= E1000_CTRL_EXT_INT_TIMER_CLR; + /* Auto-Mask interrupts upon ICR access */ + ctrl_ext |= E1000_CTRL_EXT_IAME; + ew32(IAM, 0xffffffff); + ew32(CTRL_EXT, ctrl_ext); + e1e_flush(); + + /* Setup the HW Rx Head and Tail Descriptor Pointers and + * the Base and Length of the Rx Descriptor Ring */ + rdba = rx_ring->dma; + ew32(RDBAL, (rdba & DMA_32BIT_MASK)); + ew32(RDBAH, (rdba >> 32)); + ew32(RDLEN, rdlen); + ew32(RDH, 0); + ew32(RDT, 0); + rx_ring->head = E1000_RDH; + rx_ring->tail = E1000_RDT; + + /* Enable Receive Checksum Offload for TCP and UDP */ + rxcsum = er32(RXCSUM); + if (adapter->flags & FLAG_RX_CSUM_ENABLED) { + rxcsum |= E1000_RXCSUM_TUOFL; + + /* IPv4 payload checksum for UDP fragments must be + * used in conjunction with packet-split. */ + if (adapter->rx_ps_pages) + rxcsum |= E1000_RXCSUM_IPPCSE; + } else { + rxcsum &= ~E1000_RXCSUM_TUOFL; + /* no need to clear IPPCSE as it defaults to 0 */ + } + ew32(RXCSUM, rxcsum); + + /* Enable early receives on supported devices, only takes effect when + * packet size is equal or larger than the specified value (in 8 byte + * units), e.g. using jumbo frames when setting to E1000_ERT_2048 */ + if ((adapter->flags & FLAG_HAS_ERT) && + (adapter->netdev->mtu > ETH_DATA_LEN)) + ew32(ERT, E1000_ERT_2048); + + /* Enable Receives */ + ew32(RCTL, rctl); +} + +/** + * e1000_mc_addr_list_update - Update Multicast addresses + * @hw: pointer to the HW structure + * @mc_addr_list: array of multicast addresses to program + * @mc_addr_count: number of multicast addresses to program + * @rar_used_count: the first RAR register free to program + * @rar_count: total number of supported Receive Address Registers + * + * Updates the Receive Address Registers and Multicast Table Array. + * The caller must have a packed mc_addr_list of multicast addresses. + * The parameter rar_count will usually be hw->mac.rar_entry_count + * unless there are workarounds that change this. Currently no func pointer + * exists and all implementations are handled in the generic version of this + * function. + **/ +static void e1000_mc_addr_list_update(struct e1000_hw *hw, u8 *mc_addr_list, + u32 mc_addr_count, u32 rar_used_count, + u32 rar_count) +{ + hw->mac.ops.mc_addr_list_update(hw, mc_addr_list, mc_addr_count, + rar_used_count, rar_count); +} + +/** + * e1000_set_multi - Multicast and Promiscuous mode set + * @netdev: network interface device structure + * + * The set_multi entry point is called whenever the multicast address + * list or the network interface flags are updated. This routine is + * responsible for configuring the hardware for proper multicast, + * promiscuous mode, and all-multi behavior. + **/ +static void e1000_set_multi(struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + struct e1000_mac_info *mac = &hw->mac; + struct dev_mc_list *mc_ptr; + u8 *mta_list; + u32 rctl; + int i; + + /* Check for Promiscuous and All Multicast modes */ + + rctl = er32(RCTL); + + if (netdev->flags & IFF_PROMISC) { + rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); + } else if (netdev->flags & IFF_ALLMULTI) { + rctl |= E1000_RCTL_MPE; + rctl &= ~E1000_RCTL_UPE; + } else { + rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); + } + + ew32(RCTL, rctl); + + if (netdev->mc_count) { + mta_list = kmalloc(netdev->mc_count * 6, GFP_ATOMIC); + if (!mta_list) + return; + + /* prepare a packed array of only addresses. */ + mc_ptr = netdev->mc_list; + + for (i = 0; i < netdev->mc_count; i++) { + if (!mc_ptr) + break; + memcpy(mta_list + (i*ETH_ALEN), mc_ptr->dmi_addr, + ETH_ALEN); + mc_ptr = mc_ptr->next; + } + + e1000_mc_addr_list_update(hw, mta_list, i, 1, + mac->rar_entry_count); + kfree(mta_list); + } else { + /* + * if we're called from probe, we might not have + * anything to do here, so clear out the list + */ + e1000_mc_addr_list_update(hw, NULL, 0, 1, + mac->rar_entry_count); + } +} + +/** + * e1000_configure - configure the hardware for RX and TX + * @adapter: private board structure + **/ +static void e1000_configure(struct e1000_adapter *adapter) +{ + e1000_set_multi(adapter->netdev); + + e1000_restore_vlan(adapter); + e1000_init_manageability(adapter); + + e1000_configure_tx(adapter); + e1000_setup_rctl(adapter); + e1000_configure_rx(adapter); + adapter->alloc_rx_buf(adapter, + e1000_desc_unused(adapter->rx_ring)); +} + +/** + * e1000e_power_up_phy - restore link in case the phy was powered down + * @adapter: address of board private structure + * + * The phy may be powered down to save power and turn off link when the + * driver is unloaded and wake on lan is not enabled (among others) + * *** this routine MUST be followed by a call to e1000e_reset *** + **/ +void e1000e_power_up_phy(struct e1000_adapter *adapter) +{ + u16 mii_reg = 0; + + /* Just clear the power down bit to wake the phy back up */ + if (adapter->hw.media_type == e1000_media_type_copper) { + /* according to the manual, the phy will retain its + * settings across a power-down/up cycle */ + e1e_rphy(&adapter->hw, PHY_CONTROL, &mii_reg); + mii_reg &= ~MII_CR_POWER_DOWN; + e1e_wphy(&adapter->hw, PHY_CONTROL, mii_reg); + } + + adapter->hw.mac.ops.setup_link(&adapter->hw); +} + +/** + * e1000_power_down_phy - Power down the PHY + * + * Power down the PHY so no link is implied when interface is down + * The PHY cannot be powered down is management or WoL is active + */ +static void e1000_power_down_phy(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + u16 mii_reg; + + /* WoL is enabled */ + if (!adapter->wol) + return; + + /* non-copper PHY? */ + if (adapter->hw.media_type != e1000_media_type_copper) + return; + + /* reset is blocked because of a SoL/IDER session */ + if (e1000e_check_mng_mode(hw) || + e1000_check_reset_block(hw)) + return; + + /* managebility (AMT) is enabled */ + if (er32(MANC) & E1000_MANC_SMBUS_EN) + return; + + /* power down the PHY */ + e1e_rphy(hw, PHY_CONTROL, &mii_reg); + mii_reg |= MII_CR_POWER_DOWN; + e1e_wphy(hw, PHY_CONTROL, mii_reg); + mdelay(1); +} + +/** + * e1000e_reset - bring the hardware into a known good state + * + * This function boots the hardware and enables some settings that + * require a configuration cycle of the hardware - those cannot be + * set/changed during runtime. After reset the device needs to be + * properly configured for rx, tx etc. + */ +void e1000e_reset(struct e1000_adapter *adapter) +{ + struct e1000_mac_info *mac = &adapter->hw.mac; + struct e1000_hw *hw = &adapter->hw; + u32 tx_space, min_tx_space, min_rx_space; + u16 hwm; + + if (mac->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN ) { + /* To maintain wire speed transmits, the Tx FIFO should be + * large enough to accommodate two full transmit packets, + * rounded up to the next 1KB and expressed in KB. Likewise, + * the Rx FIFO should be large enough to accommodate at least + * one full receive packet and is similarly rounded up and + * expressed in KB. */ + adapter->pba = er32(PBA); + /* upper 16 bits has Tx packet buffer allocation size in KB */ + tx_space = adapter->pba >> 16; + /* lower 16 bits has Rx packet buffer allocation size in KB */ + adapter->pba &= 0xffff; + /* the tx fifo also stores 16 bytes of information about the tx + * but don't include ethernet FCS because hardware appends it */ + min_tx_space = (mac->max_frame_size + + sizeof(struct e1000_tx_desc) - + ETH_FCS_LEN) * 2; + min_tx_space = ALIGN(min_tx_space, 1024); + min_tx_space >>= 10; + /* software strips receive CRC, so leave room for it */ + min_rx_space = mac->max_frame_size; + min_rx_space = ALIGN(min_rx_space, 1024); + min_rx_space >>= 10; + + /* If current Tx allocation is less than the min Tx FIFO size, + * and the min Tx FIFO size is less than the current Rx FIFO + * allocation, take space away from current Rx allocation */ + if (tx_space < min_tx_space && + ((min_tx_space - tx_space) < adapter->pba)) { + adapter->pba -= - (min_tx_space - tx_space); + + /* if short on rx space, rx wins and must trump tx + * adjustment or use Early Receive if available */ + if ((adapter->pba < min_rx_space) && + (!(adapter->flags & FLAG_HAS_ERT))) + /* ERT enabled in e1000_configure_rx */ + adapter->pba = min_rx_space; + } + } + + ew32(PBA, adapter->pba); + + /* flow control settings */ + /* The high water mark must be low enough to fit one full frame + * (or the size used for early receive) above it in the Rx FIFO. + * Set it to the lower of: + * - 90% of the Rx FIFO size, and + * - the full Rx FIFO size minus the early receive size (for parts + * with ERT support assuming ERT set to E1000_ERT_2048), or + * - the full Rx FIFO size minus one full frame */ + if (adapter->flags & FLAG_HAS_ERT) + hwm = min(((adapter->pba << 10) * 9 / 10), + ((adapter->pba << 10) - (E1000_ERT_2048 << 3))); + else + hwm = min(((adapter->pba << 10) * 9 / 10), + ((adapter->pba << 10) - mac->max_frame_size)); + + mac->fc_high_water = hwm & 0xFFF8; /* 8-byte granularity */ + mac->fc_low_water = mac->fc_high_water - 8; + + if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) + mac->fc_pause_time = 0xFFFF; + else + mac->fc_pause_time = E1000_FC_PAUSE_TIME; + mac->fc = mac->original_fc; + + /* Allow time for pending master requests to run */ + mac->ops.reset_hw(hw); + ew32(WUC, 0); + + if (mac->ops.init_hw(hw)) + ndev_err(adapter->netdev, "Hardware Error\n"); + + e1000_update_mng_vlan(adapter); + + /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ + ew32(VET, ETH_P_8021Q); + + e1000e_reset_adaptive(hw); + e1000_get_phy_info(hw); + + if (!(adapter->flags & FLAG_SMART_POWER_DOWN)) { + u16 phy_data = 0; + /* speed up time to link by disabling smart power down, ignore + * the return value of this function because there is nothing + * different we would do if it failed */ + e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); + phy_data &= ~IGP02E1000_PM_SPD; + e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); + } + + e1000_release_manageability(adapter); +} + +int e1000e_up(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + + /* hardware has been reset, we need to reload some things */ + e1000_configure(adapter); + + clear_bit(__E1000_DOWN, &adapter->state); + + napi_enable(&adapter->napi); + e1000_irq_enable(adapter); + + /* fire a link change interrupt to start the watchdog */ + ew32(ICS, E1000_ICS_LSC); + return 0; +} + +void e1000e_down(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct e1000_hw *hw = &adapter->hw; + u32 tctl, rctl; + + /* signal that we're down so the interrupt handler does not + * reschedule our watchdog timer */ + set_bit(__E1000_DOWN, &adapter->state); + + /* disable receives in the hardware */ + rctl = er32(RCTL); + ew32(RCTL, rctl & ~E1000_RCTL_EN); + /* flush and sleep below */ + + netif_stop_queue(netdev); + + /* disable transmits in the hardware */ + tctl = er32(TCTL); + tctl &= ~E1000_TCTL_EN; + ew32(TCTL, tctl); + /* flush both disables and wait for them to finish */ + e1e_flush(); + msleep(10); + + napi_disable(&adapter->napi); + e1000_irq_disable(adapter); + + del_timer_sync(&adapter->watchdog_timer); + del_timer_sync(&adapter->phy_info_timer); + + netdev->tx_queue_len = adapter->tx_queue_len; + netif_carrier_off(netdev); + adapter->link_speed = 0; + adapter->link_duplex = 0; + + e1000e_reset(adapter); + e1000_clean_tx_ring(adapter); + e1000_clean_rx_ring(adapter); + + /* + * TODO: for power management, we could drop the link and + * pci_disable_device here. + */ +} + +void e1000e_reinit_locked(struct e1000_adapter *adapter) +{ + might_sleep(); + while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) + msleep(1); + e1000e_down(adapter); + e1000e_up(adapter); + clear_bit(__E1000_RESETTING, &adapter->state); +} + +/** + * e1000_sw_init - Initialize general software structures (struct e1000_adapter) + * @adapter: board private structure to initialize + * + * e1000_sw_init initializes the Adapter private data structure. + * Fields are initialized based on PCI device information and + * OS network device settings (MTU size). + **/ +static int __devinit e1000_sw_init(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + struct net_device *netdev = adapter->netdev; + + adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; + adapter->rx_ps_bsize0 = 128; + hw->mac.max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; + hw->mac.min_frame_size = ETH_ZLEN + ETH_FCS_LEN; + + adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); + if (!adapter->tx_ring) + goto err; + + adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); + if (!adapter->rx_ring) + goto err; + + spin_lock_init(&adapter->tx_queue_lock); + + /* Explicitly disable IRQ since the NIC can be in any state. */ + atomic_set(&adapter->irq_sem, 0); + e1000_irq_disable(adapter); + + spin_lock_init(&adapter->stats_lock); + + set_bit(__E1000_DOWN, &adapter->state); + return 0; + +err: + ndev_err(netdev, "Unable to allocate memory for queues\n"); + kfree(adapter->rx_ring); + kfree(adapter->tx_ring); + return -ENOMEM; +} + +/** + * e1000_open - Called when a network interface is made active + * @netdev: network interface device structure + * + * Returns 0 on success, negative value on failure + * + * The open entry point is called when a network interface is made + * active by the system (IFF_UP). At this point all resources needed + * for transmit and receive operations are allocated, the interrupt + * handler is registered with the OS, the watchdog timer is started, + * and the stack is notified that the interface is ready. + **/ +static int e1000_open(struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + int err; + + /* disallow open during test */ + if (test_bit(__E1000_TESTING, &adapter->state)) + return -EBUSY; + + /* allocate transmit descriptors */ + err = e1000e_setup_tx_resources(adapter); + if (err) + goto err_setup_tx; + + /* allocate receive descriptors */ + err = e1000e_setup_rx_resources(adapter); + if (err) + goto err_setup_rx; + + e1000e_power_up_phy(adapter); + + adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; + if ((adapter->hw.mng_cookie.status & + E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) + e1000_update_mng_vlan(adapter); + + /* If AMT is enabled, let the firmware know that the network + * interface is now open */ + if ((adapter->flags & FLAG_HAS_AMT) && + e1000e_check_mng_mode(&adapter->hw)) + e1000_get_hw_control(adapter); + + /* before we allocate an interrupt, we must be ready to handle it. + * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt + * as soon as we call pci_request_irq, so we have to setup our + * clean_rx handler before we do so. */ + e1000_configure(adapter); + + err = e1000_request_irq(adapter); + if (err) + goto err_req_irq; + + /* From here on the code is the same as e1000e_up() */ + clear_bit(__E1000_DOWN, &adapter->state); + + napi_enable(&adapter->napi); + + e1000_irq_enable(adapter); + + /* fire a link status change interrupt to start the watchdog */ + ew32(ICS, E1000_ICS_LSC); + + return 0; + +err_req_irq: + e1000_release_hw_control(adapter); + e1000_power_down_phy(adapter); + e1000e_free_rx_resources(adapter); +err_setup_rx: + e1000e_free_tx_resources(adapter); +err_setup_tx: + e1000e_reset(adapter); + + return err; +} + +/** + * e1000_close - Disables a network interface + * @netdev: network interface device structure + * + * Returns 0, this is not allowed to fail + * + * The close entry point is called when an interface is de-activated + * by the OS. The hardware is still under the drivers control, but + * needs to be disabled. A global MAC reset is issued to stop the + * hardware, and all transmit and receive resources are freed. + **/ +static int e1000_close(struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + + WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); + e1000e_down(adapter); + e1000_power_down_phy(adapter); + e1000_free_irq(adapter); + + e1000e_free_tx_resources(adapter); + e1000e_free_rx_resources(adapter); + + /* kill manageability vlan ID if supported, but not if a vlan with + * the same ID is registered on the host OS (let 8021q kill it) */ + if ((adapter->hw.mng_cookie.status & + E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && + !(adapter->vlgrp && + vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) + e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); + + /* If AMT is enabled, let the firmware know that the network + * interface is now closed */ + if ((adapter->flags & FLAG_HAS_AMT) && + e1000e_check_mng_mode(&adapter->hw)) + e1000_release_hw_control(adapter); + + return 0; +} +/** + * e1000_set_mac - Change the Ethernet Address of the NIC + * @netdev: network interface device structure + * @p: pointer to an address structure + * + * Returns 0 on success, negative on failure + **/ +static int e1000_set_mac(struct net_device *netdev, void *p) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + struct sockaddr *addr = p; + + if (!is_valid_ether_addr(addr->sa_data)) + return -EADDRNOTAVAIL; + + memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); + memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); + + e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); + + if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { + /* activate the work around */ + e1000e_set_laa_state_82571(&adapter->hw, 1); + + /* Hold a copy of the LAA in RAR[14] This is done so that + * between the time RAR[0] gets clobbered and the time it + * gets fixed (in e1000_watchdog), the actual LAA is in one + * of the RARs and no incoming packets directed to this port + * are dropped. Eventually the LAA will be in RAR[0] and + * RAR[14] */ + e1000e_rar_set(&adapter->hw, + adapter->hw.mac.addr, + adapter->hw.mac.rar_entry_count - 1); + } + + return 0; +} + +/* Need to wait a few seconds after link up to get diagnostic information from + * the phy */ +static void e1000_update_phy_info(unsigned long data) +{ + struct e1000_adapter *adapter = (struct e1000_adapter *) data; + e1000_get_phy_info(&adapter->hw); +} + +/** + * e1000e_update_stats - Update the board statistics counters + * @adapter: board private structure + **/ +void e1000e_update_stats(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + struct pci_dev *pdev = adapter->pdev; + unsigned long irq_flags; + u16 phy_tmp; + +#define PHY_IDLE_ERROR_COUNT_MASK 0x00FF + + /* + * Prevent stats update while adapter is being reset, or if the pci + * connection is down. + */ + if (adapter->link_speed == 0) + return; + if (pci_channel_offline(pdev)) + return; + + spin_lock_irqsave(&adapter->stats_lock, irq_flags); + + /* these counters are modified from e1000_adjust_tbi_stats, + * called from the interrupt context, so they must only + * be written while holding adapter->stats_lock + */ + + adapter->stats.crcerrs += er32(CRCERRS); + adapter->stats.gprc += er32(GPRC); + adapter->stats.gorcl += er32(GORCL); + adapter->stats.gorch += er32(GORCH); + adapter->stats.bprc += er32(BPRC); + adapter->stats.mprc += er32(MPRC); + adapter->stats.roc += er32(ROC); + + if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) { + adapter->stats.prc64 += er32(PRC64); + adapter->stats.prc127 += er32(PRC127); + adapter->stats.prc255 += er32(PRC255); + adapter->stats.prc511 += er32(PRC511); + adapter->stats.prc1023 += er32(PRC1023); + adapter->stats.prc1522 += er32(PRC1522); + adapter->stats.symerrs += er32(SYMERRS); + adapter->stats.sec += er32(SEC); + } + + adapter->stats.mpc += er32(MPC); + adapter->stats.scc += er32(SCC); + adapter->stats.ecol += er32(ECOL); + adapter->stats.mcc += er32(MCC); + adapter->stats.latecol += er32(LATECOL); + adapter->stats.dc += er32(DC); + adapter->stats.rlec += er32(RLEC); + adapter->stats.xonrxc += er32(XONRXC); + adapter->stats.xontxc += er32(XONTXC); + adapter->stats.xoffrxc += er32(XOFFRXC); + adapter->stats.xofftxc += er32(XOFFTXC); + adapter->stats.fcruc += er32(FCRUC); + adapter->stats.gptc += er32(GPTC); + adapter->stats.gotcl += er32(GOTCL); + adapter->stats.gotch += er32(GOTCH); + adapter->stats.rnbc += er32(RNBC); + adapter->stats.ruc += er32(RUC); + adapter->stats.rfc += er32(RFC); + adapter->stats.rjc += er32(RJC); + adapter->stats.torl += er32(TORL); + adapter->stats.torh += er32(TORH); + adapter->stats.totl += er32(TOTL); + adapter->stats.toth += er32(TOTH); + adapter->stats.tpr += er32(TPR); + + if (adapter->flags & FLAG_HAS_STATS_PTC_PRC) { + adapter->stats.ptc64 += er32(PTC64); + adapter->stats.ptc127 += er32(PTC127); + adapter->stats.ptc255 += er32(PTC255); + adapter->stats.ptc511 += er32(PTC511); + adapter->stats.ptc1023 += er32(PTC1023); + adapter->stats.ptc1522 += er32(PTC1522); + } + + adapter->stats.mptc += er32(MPTC); + adapter->stats.bptc += er32(BPTC); + + /* used for adaptive IFS */ + + hw->mac.tx_packet_delta = er32(TPT); + adapter->stats.tpt += hw->mac.tx_packet_delta; + hw->mac.collision_delta = er32(COLC); + adapter->stats.colc += hw->mac.collision_delta; + + adapter->stats.algnerrc += er32(ALGNERRC); + adapter->stats.rxerrc += er32(RXERRC); + adapter->stats.tncrs += er32(TNCRS); + adapter->stats.cexterr += er32(CEXTERR); + adapter->stats.tsctc += er32(TSCTC); + adapter->stats.tsctfc += er32(TSCTFC); + + adapter->stats.iac += er32(IAC); + + if (adapter->flags & FLAG_HAS_STATS_ICR_ICT) { + adapter->stats.icrxoc += er32(ICRXOC); + adapter->stats.icrxptc += er32(ICRXPTC); + adapter->stats.icrxatc += er32(ICRXATC); + adapter->stats.ictxptc += er32(ICTXPTC); + adapter->stats.ictxatc += er32(ICTXATC); + adapter->stats.ictxqec += er32(ICTXQEC); + adapter->stats.ictxqmtc += er32(ICTXQMTC); + adapter->stats.icrxdmtc += er32(ICRXDMTC); + } + + /* Fill out the OS statistics structure */ + adapter->net_stats.rx_packets = adapter->stats.gprc; + adapter->net_stats.tx_packets = adapter->stats.gptc; + adapter->net_stats.rx_bytes = adapter->stats.gorcl; + adapter->net_stats.tx_bytes = adapter->stats.gotcl; + adapter->net_stats.multicast = adapter->stats.mprc; + adapter->net_stats.collisions = adapter->stats.colc; + + /* Rx Errors */ + + /* RLEC on some newer hardware can be incorrect so build + * our own version based on RUC and ROC */ + adapter->net_stats.rx_errors = adapter->stats.rxerrc + + adapter->stats.crcerrs + adapter->stats.algnerrc + + adapter->stats.ruc + adapter->stats.roc + + adapter->stats.cexterr; + adapter->net_stats.rx_length_errors = adapter->stats.ruc + + adapter->stats.roc; + adapter->net_stats.rx_crc_errors = adapter->stats.crcerrs; + adapter->net_stats.rx_frame_errors = adapter->stats.algnerrc; + adapter->net_stats.rx_missed_errors = adapter->stats.mpc; + + /* Tx Errors */ + adapter->net_stats.tx_errors = adapter->stats.ecol + + adapter->stats.latecol; + adapter->net_stats.tx_aborted_errors = adapter->stats.ecol; + adapter->net_stats.tx_window_errors = adapter->stats.latecol; + adapter->net_stats.tx_carrier_errors = adapter->stats.tncrs; + + /* Tx Dropped needs to be maintained elsewhere */ + + /* Phy Stats */ + if (hw->media_type == e1000_media_type_copper) { + if ((adapter->link_speed == SPEED_1000) && + (!e1e_rphy(hw, PHY_1000T_STATUS, &phy_tmp))) { + phy_tmp &= PHY_IDLE_ERROR_COUNT_MASK; + adapter->phy_stats.idle_errors += phy_tmp; + } + } + + /* Management Stats */ + adapter->stats.mgptc += er32(MGTPTC); + adapter->stats.mgprc += er32(MGTPRC); + adapter->stats.mgpdc += er32(MGTPDC); + + spin_unlock_irqrestore(&adapter->stats_lock, irq_flags); +} + +static void e1000_print_link_info(struct e1000_adapter *adapter) +{ + struct net_device *netdev = adapter->netdev; + struct e1000_hw *hw = &adapter->hw; + u32 ctrl = er32(CTRL); + + ndev_info(netdev, + "Link is Up %d Mbps %s, Flow Control: %s\n", + adapter->link_speed, + (adapter->link_duplex == FULL_DUPLEX) ? + "Full Duplex" : "Half Duplex", + ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ? + "RX/TX" : + ((ctrl & E1000_CTRL_RFCE) ? "RX" : + ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" ))); +} + +/** + * e1000_watchdog - Timer Call-back + * @data: pointer to adapter cast into an unsigned long + **/ +static void e1000_watchdog(unsigned long data) +{ + struct e1000_adapter *adapter = (struct e1000_adapter *) data; + + /* Do the rest outside of interrupt context */ + schedule_work(&adapter->watchdog_task); + + /* TODO: make this use queue_delayed_work() */ +} + +static void e1000_watchdog_task(struct work_struct *work) +{ + struct e1000_adapter *adapter = container_of(work, + struct e1000_adapter, watchdog_task); + + struct net_device *netdev = adapter->netdev; + struct e1000_mac_info *mac = &adapter->hw.mac; + struct e1000_ring *tx_ring = adapter->tx_ring; + struct e1000_hw *hw = &adapter->hw; + u32 link, tctl; + s32 ret_val; + int tx_pending = 0; + + if ((netif_carrier_ok(netdev)) && + (er32(STATUS) & E1000_STATUS_LU)) + goto link_up; + + ret_val = mac->ops.check_for_link(hw); + if ((ret_val == E1000_ERR_PHY) && + (adapter->hw.phy.type == e1000_phy_igp_3) && + (er32(CTRL) & + E1000_PHY_CTRL_GBE_DISABLE)) { + /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ + ndev_info(netdev, + "Gigabit has been disabled, downgrading speed\n"); + } + + if ((e1000e_enable_tx_pkt_filtering(hw)) && + (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) + e1000_update_mng_vlan(adapter); + + if ((adapter->hw.media_type == e1000_media_type_internal_serdes) && + !(er32(TXCW) & E1000_TXCW_ANE)) + link = adapter->hw.mac.serdes_has_link; + else + link = er32(STATUS) & E1000_STATUS_LU; + + if (link) { + if (!netif_carrier_ok(netdev)) { + bool txb2b = 1; + mac->ops.get_link_up_info(&adapter->hw, + &adapter->link_speed, + &adapter->link_duplex); + e1000_print_link_info(adapter); + /* tweak tx_queue_len according to speed/duplex + * and adjust the timeout factor */ + netdev->tx_queue_len = adapter->tx_queue_len; + adapter->tx_timeout_factor = 1; + switch (adapter->link_speed) { + case SPEED_10: + txb2b = 0; + netdev->tx_queue_len = 10; + adapter->tx_timeout_factor = 14; + break; + case SPEED_100: + txb2b = 0; + netdev->tx_queue_len = 100; + /* maybe add some timeout factor ? */ + break; + } + + /* workaround: re-program speed mode bit after + * link-up event */ + if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && + !txb2b) { + u32 tarc0; + tarc0 = er32(TARC0); + tarc0 &= ~SPEED_MODE_BIT; + ew32(TARC0, tarc0); + } + + /* disable TSO for pcie and 10/100 speeds, to avoid + * some hardware issues */ + if (!(adapter->flags & FLAG_TSO_FORCE)) { + switch (adapter->link_speed) { + case SPEED_10: + case SPEED_100: + ndev_info(netdev, + "10/100 speed: disabling TSO\n"); + netdev->features &= ~NETIF_F_TSO; + netdev->features &= ~NETIF_F_TSO6; + break; + case SPEED_1000: + netdev->features |= NETIF_F_TSO; + netdev->features |= NETIF_F_TSO6; + break; + default: + /* oops */ + break; + } + } + + /* enable transmits in the hardware, need to do this + * after setting TARC0 */ + tctl = er32(TCTL); + tctl |= E1000_TCTL_EN; + ew32(TCTL, tctl); + + netif_carrier_on(netdev); + netif_wake_queue(netdev); + + if (!test_bit(__E1000_DOWN, &adapter->state)) + mod_timer(&adapter->phy_info_timer, + round_jiffies(jiffies + 2 * HZ)); + } else { + /* make sure the receive unit is started */ + if (adapter->flags & FLAG_RX_NEEDS_RESTART) { + u32 rctl = er32(RCTL); + ew32(RCTL, rctl | + E1000_RCTL_EN); + } + } + } else { + if (netif_carrier_ok(netdev)) { + adapter->link_speed = 0; + adapter->link_duplex = 0; + ndev_info(netdev, "Link is Down\n"); + netif_carrier_off(netdev); + netif_stop_queue(netdev); + if (!test_bit(__E1000_DOWN, &adapter->state)) + mod_timer(&adapter->phy_info_timer, + round_jiffies(jiffies + 2 * HZ)); + + if (adapter->flags & FLAG_RX_NEEDS_RESTART) + schedule_work(&adapter->reset_task); + } + } + +link_up: + e1000e_update_stats(adapter); + + mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; + adapter->tpt_old = adapter->stats.tpt; + mac->collision_delta = adapter->stats.colc - adapter->colc_old; + adapter->colc_old = adapter->stats.colc; + + adapter->gorcl = adapter->stats.gorcl - adapter->gorcl_old; + adapter->gorcl_old = adapter->stats.gorcl; + adapter->gotcl = adapter->stats.gotcl - adapter->gotcl_old; + adapter->gotcl_old = adapter->stats.gotcl; + + e1000e_update_adaptive(&adapter->hw); + + if (!netif_carrier_ok(netdev)) { + tx_pending = (e1000_desc_unused(tx_ring) + 1 < + tx_ring->count); + if (tx_pending) { + /* We've lost link, so the controller stops DMA, + * but we've got queued Tx work that's never going + * to get done, so reset controller to flush Tx. + * (Do the reset outside of interrupt context). */ + adapter->tx_timeout_count++; + schedule_work(&adapter->reset_task); + } + } + + /* Cause software interrupt to ensure rx ring is cleaned */ + ew32(ICS, E1000_ICS_RXDMT0); + + /* Force detection of hung controller every watchdog period */ + adapter->detect_tx_hung = 1; + + /* With 82571 controllers, LAA may be overwritten due to controller + * reset from the other port. Set the appropriate LAA in RAR[0] */ + if (e1000e_get_laa_state_82571(hw)) + e1000e_rar_set(hw, adapter->hw.mac.addr, 0); + + /* Reset the timer */ + if (!test_bit(__E1000_DOWN, &adapter->state)) + mod_timer(&adapter->watchdog_timer, + round_jiffies(jiffies + 2 * HZ)); +} + +#define E1000_TX_FLAGS_CSUM 0x00000001 +#define E1000_TX_FLAGS_VLAN 0x00000002 +#define E1000_TX_FLAGS_TSO 0x00000004 +#define E1000_TX_FLAGS_IPV4 0x00000008 +#define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 +#define E1000_TX_FLAGS_VLAN_SHIFT 16 + +static int e1000_tso(struct e1000_adapter *adapter, + struct sk_buff *skb) +{ + struct e1000_ring *tx_ring = adapter->tx_ring; + struct e1000_context_desc *context_desc; + struct e1000_buffer *buffer_info; + unsigned int i; + u32 cmd_length = 0; + u16 ipcse = 0, tucse, mss; + u8 ipcss, ipcso, tucss, tucso, hdr_len; + int err; + + if (skb_is_gso(skb)) { + if (skb_header_cloned(skb)) { + err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); + if (err) + return err; + } + + hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); + mss = skb_shinfo(skb)->gso_size; + if (skb->protocol == htons(ETH_P_IP)) { + struct iphdr *iph = ip_hdr(skb); + iph->tot_len = 0; + iph->check = 0; + tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, + iph->daddr, 0, + IPPROTO_TCP, + 0); + cmd_length = E1000_TXD_CMD_IP; + ipcse = skb_transport_offset(skb) - 1; + } else if (skb_shinfo(skb)->gso_type == SKB_GSO_TCPV6) { + ipv6_hdr(skb)->payload_len = 0; + tcp_hdr(skb)->check = + ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, + &ipv6_hdr(skb)->daddr, + 0, IPPROTO_TCP, 0); + ipcse = 0; + } + ipcss = skb_network_offset(skb); + ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; + tucss = skb_transport_offset(skb); + tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; + tucse = 0; + + cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | + E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); + + i = tx_ring->next_to_use; + context_desc = E1000_CONTEXT_DESC(*tx_ring, i); + buffer_info = &tx_ring->buffer_info[i]; + + context_desc->lower_setup.ip_fields.ipcss = ipcss; + context_desc->lower_setup.ip_fields.ipcso = ipcso; + context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); + context_desc->upper_setup.tcp_fields.tucss = tucss; + context_desc->upper_setup.tcp_fields.tucso = tucso; + context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); + context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); + context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; + context_desc->cmd_and_length = cpu_to_le32(cmd_length); + + buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; + + i++; + if (i == tx_ring->count) + i = 0; + tx_ring->next_to_use = i; + + return 1; + } + + return 0; +} + +static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) +{ + struct e1000_ring *tx_ring = adapter->tx_ring; + struct e1000_context_desc *context_desc; + struct e1000_buffer *buffer_info; + unsigned int i; + u8 css; + + if (skb->ip_summed == CHECKSUM_PARTIAL) { + css = skb_transport_offset(skb); + + i = tx_ring->next_to_use; + buffer_info = &tx_ring->buffer_info[i]; + context_desc = E1000_CONTEXT_DESC(*tx_ring, i); + + context_desc->lower_setup.ip_config = 0; + context_desc->upper_setup.tcp_fields.tucss = css; + context_desc->upper_setup.tcp_fields.tucso = + css + skb->csum_offset; + context_desc->upper_setup.tcp_fields.tucse = 0; + context_desc->tcp_seg_setup.data = 0; + context_desc->cmd_and_length = cpu_to_le32(E1000_TXD_CMD_DEXT); + + buffer_info->time_stamp = jiffies; + buffer_info->next_to_watch = i; + + i++; + if (i == tx_ring->count) + i = 0; + tx_ring->next_to_use = i; + + return 1; + } + + return 0; +} + +#define E1000_MAX_PER_TXD 8192 +#define E1000_MAX_TXD_PWR 12 + +static int e1000_tx_map(struct e1000_adapter *adapter, + struct sk_buff *skb, unsigned int first, + unsigned int max_per_txd, unsigned int nr_frags, + unsigned int mss) +{ + struct e1000_ring *tx_ring = adapter->tx_ring; + struct e1000_buffer *buffer_info; + unsigned int len = skb->len - skb->data_len; + unsigned int offset = 0, size, count = 0, i; + unsigned int f; + + i = tx_ring->next_to_use; + + while (len) { + buffer_info = &tx_ring->buffer_info[i]; + size = min(len, max_per_txd); + + /* Workaround for premature desc write-backs + * in TSO mode. Append 4-byte sentinel desc */ + if (mss && !nr_frags && size == len && size > 8) + size -= 4; + + buffer_info->length = size; + /* set time_stamp *before* dma to help avoid a possible race */ + buffer_info->time_stamp = jiffies; + buffer_info->dma = + pci_map_single(adapter->pdev, + skb->data + offset, + size, + PCI_DMA_TODEVICE); + if (pci_dma_mapping_error(buffer_info->dma)) { + dev_err(&adapter->pdev->dev, "TX DMA map failed\n"); + adapter->tx_dma_failed++; + return -1; + } + buffer_info->next_to_watch = i; + + len -= size; + offset += size; + count++; + i++; + if (i == tx_ring->count) + i = 0; + } + + for (f = 0; f < nr_frags; f++) { + struct skb_frag_struct *frag; + + frag = &skb_shinfo(skb)->frags[f]; + len = frag->size; + offset = frag->page_offset; + + while (len) { + buffer_info = &tx_ring->buffer_info[i]; + size = min(len, max_per_txd); + /* Workaround for premature desc write-backs + * in TSO mode. Append 4-byte sentinel desc */ + if (mss && f == (nr_frags-1) && size == len && size > 8) + size -= 4; + + buffer_info->length = size; + buffer_info->time_stamp = jiffies; + buffer_info->dma = + pci_map_page(adapter->pdev, + frag->page, + offset, + size, + PCI_DMA_TODEVICE); + if (pci_dma_mapping_error(buffer_info->dma)) { + dev_err(&adapter->pdev->dev, + "TX DMA page map failed\n"); + adapter->tx_dma_failed++; + return -1; + } + + buffer_info->next_to_watch = i; + + len -= size; + offset += size; + count++; + + i++; + if (i == tx_ring->count) + i = 0; + } + } + + if (i == 0) + i = tx_ring->count - 1; + else + i--; + + tx_ring->buffer_info[i].skb = skb; + tx_ring->buffer_info[first].next_to_watch = i; + + return count; +} + +static void e1000_tx_queue(struct e1000_adapter *adapter, + int tx_flags, int count) +{ + struct e1000_ring *tx_ring = adapter->tx_ring; + struct e1000_tx_desc *tx_desc = NULL; + struct e1000_buffer *buffer_info; + u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; + unsigned int i; + + if (tx_flags & E1000_TX_FLAGS_TSO) { + txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | + E1000_TXD_CMD_TSE; + txd_upper |= E1000_TXD_POPTS_TXSM << 8; + + if (tx_flags & E1000_TX_FLAGS_IPV4) + txd_upper |= E1000_TXD_POPTS_IXSM << 8; + } + + if (tx_flags & E1000_TX_FLAGS_CSUM) { + txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; + txd_upper |= E1000_TXD_POPTS_TXSM << 8; + } + + if (tx_flags & E1000_TX_FLAGS_VLAN) { + txd_lower |= E1000_TXD_CMD_VLE; + txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); + } + + i = tx_ring->next_to_use; + + while (count--) { + buffer_info = &tx_ring->buffer_info[i]; + tx_desc = E1000_TX_DESC(*tx_ring, i); + tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); + tx_desc->lower.data = + cpu_to_le32(txd_lower | buffer_info->length); + tx_desc->upper.data = cpu_to_le32(txd_upper); + + i++; + if (i == tx_ring->count) + i = 0; + } + + tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); + + /* Force memory writes to complete before letting h/w + * know there are new descriptors to fetch. (Only + * applicable for weak-ordered memory model archs, + * such as IA-64). */ + wmb(); + + tx_ring->next_to_use = i; + writel(i, adapter->hw.hw_addr + tx_ring->tail); + /* we need this if more than one processor can write to our tail + * at a time, it synchronizes IO on IA64/Altix systems */ + mmiowb(); +} + +#define MINIMUM_DHCP_PACKET_SIZE 282 +static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, + struct sk_buff *skb) +{ + struct e1000_hw *hw = &adapter->hw; + u16 length, offset; + + if (vlan_tx_tag_present(skb)) { + if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) + && (adapter->hw.mng_cookie.status & + E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) + return 0; + } + + if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) + return 0; + + if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) + return 0; + + { + const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); + struct udphdr *udp; + + if (ip->protocol != IPPROTO_UDP) + return 0; + + udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); + if (ntohs(udp->dest) != 67) + return 0; + + offset = (u8 *)udp + 8 - skb->data; + length = skb->len - offset; + return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); + } + + return 0; +} + +static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + + netif_stop_queue(netdev); + /* Herbert's original patch had: + * smp_mb__after_netif_stop_queue(); + * but since that doesn't exist yet, just open code it. */ + smp_mb(); + + /* We need to check again in a case another CPU has just + * made room available. */ + if (e1000_desc_unused(adapter->tx_ring) < size) + return -EBUSY; + + /* A reprieve! */ + netif_start_queue(netdev); + ++adapter->restart_queue; + return 0; +} + +static int e1000_maybe_stop_tx(struct net_device *netdev, int size) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + + if (e1000_desc_unused(adapter->tx_ring) >= size) + return 0; + return __e1000_maybe_stop_tx(netdev, size); +} + +#define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) +static int e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_ring *tx_ring = adapter->tx_ring; + unsigned int first; + unsigned int max_per_txd = E1000_MAX_PER_TXD; + unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; + unsigned int tx_flags = 0; + unsigned int len = skb->len - skb->data_len; + unsigned long irq_flags; + unsigned int nr_frags; + unsigned int mss; + int count = 0; + int tso; + unsigned int f; + + if (test_bit(__E1000_DOWN, &adapter->state)) { + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; + } + + if (skb->len <= 0) { + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; + } + + mss = skb_shinfo(skb)->gso_size; + /* The controller does a simple calculation to + * make sure there is enough room in the FIFO before + * initiating the DMA for each buffer. The calc is: + * 4 = ceil(buffer len/mss). To make sure we don't + * overrun the FIFO, adjust the max buffer len if mss + * drops. */ + if (mss) { + u8 hdr_len; + max_per_txd = min(mss << 2, max_per_txd); + max_txd_pwr = fls(max_per_txd) - 1; + + /* TSO Workaround for 82571/2/3 Controllers -- if skb->data + * points to just header, pull a few bytes of payload from + * frags into skb->data */ + hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); + if (skb->data_len && (hdr_len == len)) { + unsigned int pull_size; + + pull_size = min((unsigned int)4, skb->data_len); + if (!__pskb_pull_tail(skb, pull_size)) { + ndev_err(netdev, + "__pskb_pull_tail failed.\n"); + dev_kfree_skb_any(skb); + return NETDEV_TX_OK; + } + len = skb->len - skb->data_len; + } + } + + /* reserve a descriptor for the offload context */ + if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) + count++; + count++; + + count += TXD_USE_COUNT(len, max_txd_pwr); + + nr_frags = skb_shinfo(skb)->nr_frags; + for (f = 0; f < nr_frags; f++) + count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, + max_txd_pwr); + + if (adapter->hw.mac.tx_pkt_filtering) + e1000_transfer_dhcp_info(adapter, skb); + + if (!spin_trylock_irqsave(&adapter->tx_queue_lock, irq_flags)) + /* Collision - tell upper layer to requeue */ + return NETDEV_TX_LOCKED; + + /* need: count + 2 desc gap to keep tail from touching + * head, otherwise try next time */ + if (e1000_maybe_stop_tx(netdev, count + 2)) { + spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); + return NETDEV_TX_BUSY; + } + + if (adapter->vlgrp && vlan_tx_tag_present(skb)) { + tx_flags |= E1000_TX_FLAGS_VLAN; + tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); + } + + first = tx_ring->next_to_use; + + tso = e1000_tso(adapter, skb); + if (tso < 0) { + dev_kfree_skb_any(skb); + spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); + return NETDEV_TX_OK; + } + + if (tso) + tx_flags |= E1000_TX_FLAGS_TSO; + else if (e1000_tx_csum(adapter, skb)) + tx_flags |= E1000_TX_FLAGS_CSUM; + + /* Old method was to assume IPv4 packet by default if TSO was enabled. + * 82571 hardware supports TSO capabilities for IPv6 as well... + * no longer assume, we must. */ + if (skb->protocol == htons(ETH_P_IP)) + tx_flags |= E1000_TX_FLAGS_IPV4; + + count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss); + if (count < 0) { + /* handle pci_map_single() error in e1000_tx_map */ + dev_kfree_skb_any(skb); + spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); + return NETDEV_TX_OK; + } + + e1000_tx_queue(adapter, tx_flags, count); + + netdev->trans_start = jiffies; + + /* Make sure there is space in the ring for the next send. */ + e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2); + + spin_unlock_irqrestore(&adapter->tx_queue_lock, irq_flags); + return NETDEV_TX_OK; +} + +/** + * e1000_tx_timeout - Respond to a Tx Hang + * @netdev: network interface device structure + **/ +static void e1000_tx_timeout(struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + + /* Do the reset outside of interrupt context */ + adapter->tx_timeout_count++; + schedule_work(&adapter->reset_task); +} + +static void e1000_reset_task(struct work_struct *work) +{ + struct e1000_adapter *adapter; + adapter = container_of(work, struct e1000_adapter, reset_task); + + e1000e_reinit_locked(adapter); +} + +/** + * e1000_get_stats - Get System Network Statistics + * @netdev: network interface device structure + * + * Returns the address of the device statistics structure. + * The statistics are actually updated from the timer callback. + **/ +static struct net_device_stats *e1000_get_stats(struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + + /* only return the current stats */ + return &adapter->net_stats; +} + +/** + * e1000_change_mtu - Change the Maximum Transfer Unit + * @netdev: network interface device structure + * @new_mtu: new value for maximum frame size + * + * Returns 0 on success, negative on failure + **/ +static int e1000_change_mtu(struct net_device *netdev, int new_mtu) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; + + if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || + (max_frame > MAX_JUMBO_FRAME_SIZE)) { + ndev_err(netdev, "Invalid MTU setting\n"); + return -EINVAL; + } + + /* Jumbo frame size limits */ + if (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) { + if (!(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { + ndev_err(netdev, "Jumbo Frames not supported.\n"); + return -EINVAL; + } + if (adapter->hw.phy.type == e1000_phy_ife) { + ndev_err(netdev, "Jumbo Frames not supported.\n"); + return -EINVAL; + } + } + +#define MAX_STD_JUMBO_FRAME_SIZE 9234 + if (max_frame > MAX_STD_JUMBO_FRAME_SIZE) { + ndev_err(netdev, "MTU > 9216 not supported.\n"); + return -EINVAL; + } + + while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) + msleep(1); + /* e1000e_down has a dependency on max_frame_size */ + adapter->hw.mac.max_frame_size = max_frame; + if (netif_running(netdev)) + e1000e_down(adapter); + + /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN + * means we reserve 2 more, this pushes us to allocate from the next + * larger slab size. + * i.e. RXBUFFER_2048 --> size-4096 slab + * however with the new *_jumbo* routines, jumbo receives will use + * fragmented skbs */ + + if (max_frame <= 256) + adapter->rx_buffer_len = 256; + else if (max_frame <= 512) + adapter->rx_buffer_len = 512; + else if (max_frame <= 1024) + adapter->rx_buffer_len = 1024; + else if (max_frame <= 2048) + adapter->rx_buffer_len = 2048; + else + adapter->rx_buffer_len = 4096; + + /* adjust allocation if LPE protects us, and we aren't using SBP */ + if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || + (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) + adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + + ETH_FCS_LEN ; + + ndev_info(netdev, "changing MTU from %d to %d\n", + netdev->mtu, new_mtu); + netdev->mtu = new_mtu; + + if (netif_running(netdev)) + e1000e_up(adapter); + else + e1000e_reset(adapter); + + clear_bit(__E1000_RESETTING, &adapter->state); + + return 0; +} + +static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, + int cmd) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + struct mii_ioctl_data *data = if_mii(ifr); + unsigned long irq_flags; + + if (adapter->hw.media_type != e1000_media_type_copper) + return -EOPNOTSUPP; + + switch (cmd) { + case SIOCGMIIPHY: + data->phy_id = adapter->hw.phy.addr; + break; + case SIOCGMIIREG: + if (!capable(CAP_NET_ADMIN)) + return -EPERM; + spin_lock_irqsave(&adapter->stats_lock, irq_flags); + if (e1e_rphy(&adapter->hw, data->reg_num & 0x1F, + &data->val_out)) { + spin_unlock_irqrestore(&adapter->stats_lock, irq_flags); + return -EIO; + } + spin_unlock_irqrestore(&adapter->stats_lock, irq_flags); + break; + case SIOCSMIIREG: + default: + return -EOPNOTSUPP; + } + return 0; +} + +static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) +{ + switch (cmd) { + case SIOCGMIIPHY: + case SIOCGMIIREG: + case SIOCSMIIREG: + return e1000_mii_ioctl(netdev, ifr, cmd); + default: + return -EOPNOTSUPP; + } +} + +static int e1000_suspend(struct pci_dev *pdev, pm_message_t state) +{ + struct net_device *netdev = pci_get_drvdata(pdev); + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + u32 ctrl, ctrl_ext, rctl, status; + u32 wufc = adapter->wol; + int retval = 0; + + netif_device_detach(netdev); + + if (netif_running(netdev)) { + WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); + e1000e_down(adapter); + e1000_free_irq(adapter); + } + + retval = pci_save_state(pdev); + if (retval) + return retval; + + status = er32(STATUS); + if (status & E1000_STATUS_LU) + wufc &= ~E1000_WUFC_LNKC; + + if (wufc) { + e1000_setup_rctl(adapter); + e1000_set_multi(netdev); + + /* turn on all-multi mode if wake on multicast is enabled */ + if (wufc & E1000_WUFC_MC) { + rctl = er32(RCTL); + rctl |= E1000_RCTL_MPE; + ew32(RCTL, rctl); + } + + ctrl = er32(CTRL); + /* advertise wake from D3Cold */ + #define E1000_CTRL_ADVD3WUC 0x00100000 + /* phy power management enable */ + #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 + ctrl |= E1000_CTRL_ADVD3WUC | + E1000_CTRL_EN_PHY_PWR_MGMT; + ew32(CTRL, ctrl); + + if (adapter->hw.media_type == e1000_media_type_fiber || + adapter->hw.media_type == e1000_media_type_internal_serdes) { + /* keep the laser running in D3 */ + ctrl_ext = er32(CTRL_EXT); + ctrl_ext |= E1000_CTRL_EXT_SDP7_DATA; + ew32(CTRL_EXT, ctrl_ext); + } + + /* Allow time for pending master requests to run */ + e1000e_disable_pcie_master(&adapter->hw); + + ew32(WUC, E1000_WUC_PME_EN); + ew32(WUFC, wufc); + pci_enable_wake(pdev, PCI_D3hot, 1); + pci_enable_wake(pdev, PCI_D3cold, 1); + } else { + ew32(WUC, 0); + ew32(WUFC, 0); + pci_enable_wake(pdev, PCI_D3hot, 0); + pci_enable_wake(pdev, PCI_D3cold, 0); + } + + e1000_release_manageability(adapter); + + /* make sure adapter isn't asleep if manageability is enabled */ + if (adapter->flags & FLAG_MNG_PT_ENABLED) { + pci_enable_wake(pdev, PCI_D3hot, 1); + pci_enable_wake(pdev, PCI_D3cold, 1); + } + + if (adapter->hw.phy.type == e1000_phy_igp_3) + e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); + + /* Release control of h/w to f/w. If f/w is AMT enabled, this + * would have already happened in close and is redundant. */ + e1000_release_hw_control(adapter); + + pci_disable_device(pdev); + + pci_set_power_state(pdev, pci_choose_state(pdev, state)); + + return 0; +} + +#ifdef CONFIG_PM +static int e1000_resume(struct pci_dev *pdev) +{ + struct net_device *netdev = pci_get_drvdata(pdev); + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + u32 err; + + pci_set_power_state(pdev, PCI_D0); + pci_restore_state(pdev); + err = pci_enable_device(pdev); + if (err) { + dev_err(&pdev->dev, + "Cannot enable PCI device from suspend\n"); + return err; + } + + pci_set_master(pdev); + + pci_enable_wake(pdev, PCI_D3hot, 0); + pci_enable_wake(pdev, PCI_D3cold, 0); + + if (netif_running(netdev)) { + err = e1000_request_irq(adapter); + if (err) + return err; + } + + e1000e_power_up_phy(adapter); + e1000e_reset(adapter); + ew32(WUS, ~0); + + e1000_init_manageability(adapter); + + if (netif_running(netdev)) + e1000e_up(adapter); + + netif_device_attach(netdev); + + /* If the controller has AMT, do not set DRV_LOAD until the interface + * is up. For all other cases, let the f/w know that the h/w is now + * under the control of the driver. */ + if (!(adapter->flags & FLAG_HAS_AMT) || !e1000e_check_mng_mode(&adapter->hw)) + e1000_get_hw_control(adapter); + + return 0; +} +#endif + +static void e1000_shutdown(struct pci_dev *pdev) +{ + e1000_suspend(pdev, PMSG_SUSPEND); +} + +#ifdef CONFIG_NET_POLL_CONTROLLER +/* + * Polling 'interrupt' - used by things like netconsole to send skbs + * without having to re-enable interrupts. It's not called while + * the interrupt routine is executing. + */ +static void e1000_netpoll(struct net_device *netdev) +{ + struct e1000_adapter *adapter = netdev_priv(netdev); + + disable_irq(adapter->pdev->irq); + e1000_intr(adapter->pdev->irq, netdev); + + e1000_clean_tx_irq(adapter); + + enable_irq(adapter->pdev->irq); +} +#endif + +/** + * e1000_io_error_detected - called when PCI error is detected + * @pdev: Pointer to PCI device + * @state: The current pci connection state + * + * This function is called after a PCI bus error affecting + * this device has been detected. + */ +static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, + pci_channel_state_t state) +{ + struct net_device *netdev = pci_get_drvdata(pdev); + struct e1000_adapter *adapter = netdev_priv(netdev); + + netif_device_detach(netdev); + + if (netif_running(netdev)) + e1000e_down(adapter); + pci_disable_device(pdev); + + /* Request a slot slot reset. */ + return PCI_ERS_RESULT_NEED_RESET; +} + +/** + * e1000_io_slot_reset - called after the pci bus has been reset. + * @pdev: Pointer to PCI device + * + * Restart the card from scratch, as if from a cold-boot. Implementation + * resembles the first-half of the e1000_resume routine. + */ +static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) +{ + struct net_device *netdev = pci_get_drvdata(pdev); + struct e1000_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + + if (pci_enable_device(pdev)) { + dev_err(&pdev->dev, + "Cannot re-enable PCI device after reset.\n"); + return PCI_ERS_RESULT_DISCONNECT; + } + pci_set_master(pdev); + + pci_enable_wake(pdev, PCI_D3hot, 0); + pci_enable_wake(pdev, PCI_D3cold, 0); + + e1000e_reset(adapter); + ew32(WUS, ~0); + + return PCI_ERS_RESULT_RECOVERED; +} + +/** + * e1000_io_resume - called when traffic can start flowing again. + * @pdev: Pointer to PCI device + * + * This callback is called when the error recovery driver tells us that + * its OK to resume normal operation. Implementation resembles the + * second-half of the e1000_resume routine. + */ +static void e1000_io_resume(struct pci_dev *pdev) +{ + struct net_device *netdev = pci_get_drvdata(pdev); + struct e1000_adapter *adapter = netdev_priv(netdev); + + e1000_init_manageability(adapter); + + if (netif_running(netdev)) { + if (e1000e_up(adapter)) { + dev_err(&pdev->dev, + "can't bring device back up after reset\n"); + return; + } + } + + netif_device_attach(netdev); + + /* If the controller has AMT, do not set DRV_LOAD until the interface + * is up. For all other cases, let the f/w know that the h/w is now + * under the control of the driver. */ + if (!(adapter->flags & FLAG_HAS_AMT) || + !e1000e_check_mng_mode(&adapter->hw)) + e1000_get_hw_control(adapter); + +} + +static void e1000_print_device_info(struct e1000_adapter *adapter) +{ + struct e1000_hw *hw = &adapter->hw; + struct net_device *netdev = adapter->netdev; + u32 part_num; + + /* print bus type/speed/width info */ + ndev_info(netdev, "(PCI Express:2.5GB/s:%s) " + "%02x:%02x:%02x:%02x:%02x:%02x\n", + /* bus width */ + ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : + "Width x1"), + /* MAC address */ + netdev->dev_addr[0], netdev->dev_addr[1], + netdev->dev_addr[2], netdev->dev_addr[3], + netdev->dev_addr[4], netdev->dev_addr[5]); + ndev_info(netdev, "Intel(R) PRO/%s Network Connection\n", + (hw->phy.type == e1000_phy_ife) + ? "10/100" : "1000"); + e1000e_read_part_num(hw, &part_num); + ndev_info(netdev, "MAC: %d, PHY: %d, PBA No: %06x-%03x\n", + hw->mac.type, hw->phy.type, + (part_num >> 8), (part_num & 0xff)); +} + +/** + * e1000_probe - Device Initialization Routine + * @pdev: PCI device information struct + * @ent: entry in e1000_pci_tbl + * + * Returns 0 on success, negative on failure + * + * e1000_probe initializes an adapter identified by a pci_dev structure. + * The OS initialization, configuring of the adapter private structure, + * and a hardware reset occur. + **/ +static int __devinit e1000_probe(struct pci_dev *pdev, + const struct pci_device_id *ent) +{ + struct net_device *netdev; + struct e1000_adapter *adapter; + struct e1000_hw *hw; + const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; + unsigned long mmio_start, mmio_len; + unsigned long flash_start, flash_len; + + static int cards_found; + int i, err, pci_using_dac; + u16 eeprom_data = 0; + u16 eeprom_apme_mask = E1000_EEPROM_APME; + + err = pci_enable_device(pdev); + if (err) + return err; + + pci_using_dac = 0; + err = pci_set_dma_mask(pdev, DMA_64BIT_MASK); + if (!err) { + err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); + if (!err) + pci_using_dac = 1; + } else { + err = pci_set_dma_mask(pdev, DMA_32BIT_MASK); + if (err) { + err = pci_set_consistent_dma_mask(pdev, + DMA_32BIT_MASK); + if (err) { + dev_err(&pdev->dev, "No usable DMA " + "configuration, aborting\n"); + goto err_dma; + } + } + } + + err = pci_request_regions(pdev, e1000e_driver_name); + if (err) + goto err_pci_reg; + + pci_set_master(pdev); + + err = -ENOMEM; + netdev = alloc_etherdev(sizeof(struct e1000_adapter)); + if (!netdev) + goto err_alloc_etherdev; + + SET_NETDEV_DEV(netdev, &pdev->dev); + + pci_set_drvdata(pdev, netdev); + adapter = netdev_priv(netdev); + hw = &adapter->hw; + adapter->netdev = netdev; + adapter->pdev = pdev; + adapter->ei = ei; + adapter->pba = ei->pba; + adapter->flags = ei->flags; + adapter->hw.adapter = adapter; + adapter->hw.mac.type = ei->mac; + adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; + + mmio_start = pci_resource_start(pdev, 0); + mmio_len = pci_resource_len(pdev, 0); + + err = -EIO; + adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); + if (!adapter->hw.hw_addr) + goto err_ioremap; + + if ((adapter->flags & FLAG_HAS_FLASH) && + (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { + flash_start = pci_resource_start(pdev, 1); + flash_len = pci_resource_len(pdev, 1); + adapter->hw.flash_address = ioremap(flash_start, flash_len); + if (!adapter->hw.flash_address) + goto err_flashmap; + } + + /* construct the net_device struct */ + netdev->open = &e1000_open; + netdev->stop = &e1000_close; + netdev->hard_start_xmit = &e1000_xmit_frame; + netdev->get_stats = &e1000_get_stats; + netdev->set_multicast_list = &e1000_set_multi; + netdev->set_mac_address = &e1000_set_mac; + netdev->change_mtu = &e1000_change_mtu; + netdev->do_ioctl = &e1000_ioctl; + e1000e_set_ethtool_ops(netdev); + netdev->tx_timeout = &e1000_tx_timeout; + netdev->watchdog_timeo = 5 * HZ; + netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); + netdev->vlan_rx_register = e1000_vlan_rx_register; + netdev->vlan_rx_add_vid = e1000_vlan_rx_add_vid; + netdev->vlan_rx_kill_vid = e1000_vlan_rx_kill_vid; +#ifdef CONFIG_NET_POLL_CONTROLLER + netdev->poll_controller = e1000_netpoll; +#endif + strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); + + netdev->mem_start = mmio_start; + netdev->mem_end = mmio_start + mmio_len; + + adapter->bd_number = cards_found++; + + /* setup adapter struct */ + err = e1000_sw_init(adapter); + if (err) + goto err_sw_init; + + err = -EIO; + + memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); + memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); + memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); + + err = ei->get_invariants(adapter); + if (err) + goto err_hw_init; + + hw->mac.ops.get_bus_info(&adapter->hw); + + adapter->hw.phy.wait_for_link = 0; + + /* Copper options */ + if (adapter->hw.media_type == e1000_media_type_copper) { + adapter->hw.phy.mdix = AUTO_ALL_MODES; + adapter->hw.phy.disable_polarity_correction = 0; + adapter->hw.phy.ms_type = e1000_ms_hw_default; + } + + if (e1000_check_reset_block(&adapter->hw)) + ndev_info(netdev, + "PHY reset is blocked due to SOL/IDER session.\n"); + + netdev->features = NETIF_F_SG | + NETIF_F_HW_CSUM | + NETIF_F_HW_VLAN_TX | + NETIF_F_HW_VLAN_RX; + + if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) + netdev->features |= NETIF_F_HW_VLAN_FILTER; + + netdev->features |= NETIF_F_TSO; + netdev->features |= NETIF_F_TSO6; + + if (pci_using_dac) + netdev->features |= NETIF_F_HIGHDMA; + + /* We should not be using LLTX anymore, but we are still TX faster with + * it. */ + netdev->features |= NETIF_F_LLTX; + + if (e1000e_enable_mng_pass_thru(&adapter->hw)) + adapter->flags |= FLAG_MNG_PT_ENABLED; + + /* before reading the NVM, reset the controller to + * put the device in a known good starting state */ + adapter->hw.mac.ops.reset_hw(&adapter->hw); + + /* + * systems with ASPM and others may see the checksum fail on the first + * attempt. Let's give it a few tries + */ + for (i = 0;; i++) { + if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) + break; + if (i == 2) { + ndev_err(netdev, "The NVM Checksum Is Not Valid\n"); + err = -EIO; + goto err_eeprom; + } + } + + /* copy the MAC address out of the NVM */ + if (e1000e_read_mac_addr(&adapter->hw)) + ndev_err(netdev, "NVM Read Error while reading MAC address\n"); + + memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); + memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); + + if (!is_valid_ether_addr(netdev->perm_addr)) { + ndev_err(netdev, "Invalid MAC Address: " + "%02x:%02x:%02x:%02x:%02x:%02x\n", + netdev->perm_addr[0], netdev->perm_addr[1], + netdev->perm_addr[2], netdev->perm_addr[3], + netdev->perm_addr[4], netdev->perm_addr[5]); + err = -EIO; + goto err_eeprom; + } + + init_timer(&adapter->watchdog_timer); + adapter->watchdog_timer.function = &e1000_watchdog; + adapter->watchdog_timer.data = (unsigned long) adapter; + + init_timer(&adapter->phy_info_timer); + adapter->phy_info_timer.function = &e1000_update_phy_info; + adapter->phy_info_timer.data = (unsigned long) adapter; + + INIT_WORK(&adapter->reset_task, e1000_reset_task); + INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); + + e1000e_check_options(adapter); + + /* Initialize link parameters. User can change them with ethtool */ + adapter->hw.mac.autoneg = 1; + adapter->fc_autoneg = 1; + adapter->hw.mac.original_fc = e1000_fc_default; + adapter->hw.mac.fc = e1000_fc_default; + adapter->hw.phy.autoneg_advertised = 0x2f; + + /* ring size defaults */ + adapter->rx_ring->count = 256; + adapter->tx_ring->count = 256; + + /* + * Initial Wake on LAN setting - If APM wake is enabled in + * the EEPROM, enable the ACPI Magic Packet filter + */ + if (adapter->flags & FLAG_APME_IN_WUC) { + /* APME bit in EEPROM is mapped to WUC.APME */ + eeprom_data = er32(WUC); + eeprom_apme_mask = E1000_WUC_APME; + } else if (adapter->flags & FLAG_APME_IN_CTRL3) { + if (adapter->flags & FLAG_APME_CHECK_PORT_B && + (adapter->hw.bus.func == 1)) + e1000_read_nvm(&adapter->hw, + NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); + else + e1000_read_nvm(&adapter->hw, + NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); + } + + /* fetch WoL from EEPROM */ + if (eeprom_data & eeprom_apme_mask) + adapter->eeprom_wol |= E1000_WUFC_MAG; + + /* + * now that we have the eeprom settings, apply the special cases + * where the eeprom may be wrong or the board simply won't support + * wake on lan on a particular port + */ + if (!(adapter->flags & FLAG_HAS_WOL)) + adapter->eeprom_wol = 0; + + /* initialize the wol settings based on the eeprom settings */ + adapter->wol = adapter->eeprom_wol; + + /* reset the hardware with the new settings */ + e1000e_reset(adapter); + + /* If the controller has AMT, do not set DRV_LOAD until the interface + * is up. For all other cases, let the f/w know that the h/w is now + * under the control of the driver. */ + if (!(adapter->flags & FLAG_HAS_AMT) || + !e1000e_check_mng_mode(&adapter->hw)) + e1000_get_hw_control(adapter); + + /* tell the stack to leave us alone until e1000_open() is called */ + netif_carrier_off(netdev); + netif_stop_queue(netdev); + + strcpy(netdev->name, "eth%d"); + err = register_netdev(netdev); + if (err) + goto err_register; + + e1000_print_device_info(adapter); + + return 0; + +err_register: +err_hw_init: + e1000_release_hw_control(adapter); +err_eeprom: + if (!e1000_check_reset_block(&adapter->hw)) + e1000_phy_hw_reset(&adapter->hw); + + if (adapter->hw.flash_address) + iounmap(adapter->hw.flash_address); + +err_flashmap: + kfree(adapter->tx_ring); + kfree(adapter->rx_ring); +err_sw_init: + iounmap(adapter->hw.hw_addr); +err_ioremap: + free_netdev(netdev); +err_alloc_etherdev: + pci_release_regions(pdev); +err_pci_reg: +err_dma: + pci_disable_device(pdev); + return err; +} + +/** + * e1000_remove - Device Removal Routine + * @pdev: PCI device information struct + * + * e1000_remove is called by the PCI subsystem to alert the driver + * that it should release a PCI device. The could be caused by a + * Hot-Plug event, or because the driver is going to be removed from + * memory. + **/ +static void __devexit e1000_remove(struct pci_dev *pdev) +{ + struct net_device *netdev = pci_get_drvdata(pdev); + struct e1000_adapter *adapter = netdev_priv(netdev); + + /* flush_scheduled work may reschedule our watchdog task, so + * explicitly disable watchdog tasks from being rescheduled */ + set_bit(__E1000_DOWN, &adapter->state); + del_timer_sync(&adapter->watchdog_timer); + del_timer_sync(&adapter->phy_info_timer); + + flush_scheduled_work(); + + e1000_release_manageability(adapter); + + /* Release control of h/w to f/w. If f/w is AMT enabled, this + * would have already happened in close and is redundant. */ + e1000_release_hw_control(adapter); + + unregister_netdev(netdev); + + if (!e1000_check_reset_block(&adapter->hw)) + e1000_phy_hw_reset(&adapter->hw); + + kfree(adapter->tx_ring); + kfree(adapter->rx_ring); + + iounmap(adapter->hw.hw_addr); + if (adapter->hw.flash_address) + iounmap(adapter->hw.flash_address); + pci_release_regions(pdev); + + free_netdev(netdev); + + pci_disable_device(pdev); +} + +/* PCI Error Recovery (ERS) */ +static struct pci_error_handlers e1000_err_handler = { + .error_detected = e1000_io_error_detected, + .slot_reset = e1000_io_slot_reset, + .resume = e1000_io_resume, +}; + +static struct pci_device_id e1000_pci_tbl[] = { + /* + * Support for 82571/2/3, es2lan and ich8 will be phased in + * stepwise. + + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), + board_80003es2lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), + board_80003es2lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), + board_80003es2lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), + board_80003es2lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, + */ + + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, + { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, + + { } /* terminate list */ +}; +MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); + +/* PCI Device API Driver */ +static struct pci_driver e1000_driver = { + .name = e1000e_driver_name, + .id_table = e1000_pci_tbl, + .probe = e1000_probe, + .remove = __devexit_p(e1000_remove), +#ifdef CONFIG_PM + /* Power Managment Hooks */ + .suspend = e1000_suspend, + .resume = e1000_resume, +#endif + .shutdown = e1000_shutdown, + .err_handler = &e1000_err_handler +}; + +/** + * e1000_init_module - Driver Registration Routine + * + * e1000_init_module is the first routine called when the driver is + * loaded. All it does is register with the PCI subsystem. + **/ +static int __init e1000_init_module(void) +{ + int ret; + printk(KERN_INFO "%s: Intel(R) PRO/1000 Network Driver - %s\n", + e1000e_driver_name, e1000e_driver_version); + printk(KERN_INFO "%s: Copyright (c) 1999-2007 Intel Corporation.\n", + e1000e_driver_name); + ret = pci_register_driver(&e1000_driver); + + return ret; +} +module_init(e1000_init_module); + +/** + * e1000_exit_module - Driver Exit Cleanup Routine + * + * e1000_exit_module is called just before the driver is removed + * from memory. + **/ +static void __exit e1000_exit_module(void) +{ + pci_unregister_driver(&e1000_driver); +} +module_exit(e1000_exit_module); + + +MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); +MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRV_VERSION); + +/* e1000_main.c */ |