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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-04-07 07:42:33 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-10 20:03:27 -0700
commitdee1ad47f2ee75f5146d83ca757c1b7861c34c3b (patch)
tree47cbdefe3d0f9b729724e378ad6a96eaddfd5fbc /drivers/net/e1000e/netdev.c
parentf7917c009c28c941ba151ee66f04dc7f6a2e1e0b (diff)
intel: Move the Intel wired LAN drivers
Moves the Intel wired LAN drivers into drivers/net/ethernet/intel/ and the necessary Kconfig and Makefile changes. Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/e1000e/netdev.c')
-rw-r--r--drivers/net/e1000e/netdev.c6312
1 files changed, 0 insertions, 6312 deletions
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
deleted file mode 100644
index ab4be80f7ab5..000000000000
--- a/drivers/net/e1000e/netdev.c
+++ /dev/null
@@ -1,6312 +0,0 @@
-/*******************************************************************************
-
- Intel PRO/1000 Linux driver
- Copyright(c) 1999 - 2011 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
-
-*******************************************************************************/
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#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/interrupt.h>
-#include <linux/tcp.h>
-#include <linux/ipv6.h>
-#include <linux/slab.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 <linux/pm_qos_params.h>
-#include <linux/pm_runtime.h>
-#include <linux/aer.h>
-#include <linux/prefetch.h>
-
-#include "e1000.h"
-
-#define DRV_EXTRAVERSION "-k"
-
-#define DRV_VERSION "1.3.16" DRV_EXTRAVERSION
-char e1000e_driver_name[] = "e1000e";
-const char e1000e_driver_version[] = DRV_VERSION;
-
-static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state);
-
-static const struct e1000_info *e1000_info_tbl[] = {
- [board_82571] = &e1000_82571_info,
- [board_82572] = &e1000_82572_info,
- [board_82573] = &e1000_82573_info,
- [board_82574] = &e1000_82574_info,
- [board_82583] = &e1000_82583_info,
- [board_80003es2lan] = &e1000_es2_info,
- [board_ich8lan] = &e1000_ich8_info,
- [board_ich9lan] = &e1000_ich9_info,
- [board_ich10lan] = &e1000_ich10_info,
- [board_pchlan] = &e1000_pch_info,
- [board_pch2lan] = &e1000_pch2_info,
-};
-
-struct e1000_reg_info {
- u32 ofs;
- char *name;
-};
-
-#define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */
-#define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */
-#define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */
-#define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */
-#define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */
-
-#define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */
-#define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */
-#define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */
-#define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */
-#define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */
-
-static const struct e1000_reg_info e1000_reg_info_tbl[] = {
-
- /* General Registers */
- {E1000_CTRL, "CTRL"},
- {E1000_STATUS, "STATUS"},
- {E1000_CTRL_EXT, "CTRL_EXT"},
-
- /* Interrupt Registers */
- {E1000_ICR, "ICR"},
-
- /* Rx Registers */
- {E1000_RCTL, "RCTL"},
- {E1000_RDLEN, "RDLEN"},
- {E1000_RDH, "RDH"},
- {E1000_RDT, "RDT"},
- {E1000_RDTR, "RDTR"},
- {E1000_RXDCTL(0), "RXDCTL"},
- {E1000_ERT, "ERT"},
- {E1000_RDBAL, "RDBAL"},
- {E1000_RDBAH, "RDBAH"},
- {E1000_RDFH, "RDFH"},
- {E1000_RDFT, "RDFT"},
- {E1000_RDFHS, "RDFHS"},
- {E1000_RDFTS, "RDFTS"},
- {E1000_RDFPC, "RDFPC"},
-
- /* Tx Registers */
- {E1000_TCTL, "TCTL"},
- {E1000_TDBAL, "TDBAL"},
- {E1000_TDBAH, "TDBAH"},
- {E1000_TDLEN, "TDLEN"},
- {E1000_TDH, "TDH"},
- {E1000_TDT, "TDT"},
- {E1000_TIDV, "TIDV"},
- {E1000_TXDCTL(0), "TXDCTL"},
- {E1000_TADV, "TADV"},
- {E1000_TARC(0), "TARC"},
- {E1000_TDFH, "TDFH"},
- {E1000_TDFT, "TDFT"},
- {E1000_TDFHS, "TDFHS"},
- {E1000_TDFTS, "TDFTS"},
- {E1000_TDFPC, "TDFPC"},
-
- /* List Terminator */
- {}
-};
-
-/*
- * e1000_regdump - register printout routine
- */
-static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo)
-{
- int n = 0;
- char rname[16];
- u32 regs[8];
-
- switch (reginfo->ofs) {
- case E1000_RXDCTL(0):
- for (n = 0; n < 2; n++)
- regs[n] = __er32(hw, E1000_RXDCTL(n));
- break;
- case E1000_TXDCTL(0):
- for (n = 0; n < 2; n++)
- regs[n] = __er32(hw, E1000_TXDCTL(n));
- break;
- case E1000_TARC(0):
- for (n = 0; n < 2; n++)
- regs[n] = __er32(hw, E1000_TARC(n));
- break;
- default:
- printk(KERN_INFO "%-15s %08x\n",
- reginfo->name, __er32(hw, reginfo->ofs));
- return;
- }
-
- snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]");
- printk(KERN_INFO "%-15s ", rname);
- for (n = 0; n < 2; n++)
- printk(KERN_CONT "%08x ", regs[n]);
- printk(KERN_CONT "\n");
-}
-
-/*
- * e1000e_dump - Print registers, Tx-ring and Rx-ring
- */
-static void e1000e_dump(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_reg_info *reginfo;
- struct e1000_ring *tx_ring = adapter->tx_ring;
- struct e1000_tx_desc *tx_desc;
- struct my_u0 {
- u64 a;
- u64 b;
- } *u0;
- struct e1000_buffer *buffer_info;
- struct e1000_ring *rx_ring = adapter->rx_ring;
- union e1000_rx_desc_packet_split *rx_desc_ps;
- struct e1000_rx_desc *rx_desc;
- struct my_u1 {
- u64 a;
- u64 b;
- u64 c;
- u64 d;
- } *u1;
- u32 staterr;
- int i = 0;
-
- if (!netif_msg_hw(adapter))
- return;
-
- /* Print netdevice Info */
- if (netdev) {
- dev_info(&adapter->pdev->dev, "Net device Info\n");
- printk(KERN_INFO "Device Name state "
- "trans_start last_rx\n");
- printk(KERN_INFO "%-15s %016lX %016lX %016lX\n",
- netdev->name, netdev->state, netdev->trans_start,
- netdev->last_rx);
- }
-
- /* Print Registers */
- dev_info(&adapter->pdev->dev, "Register Dump\n");
- printk(KERN_INFO " Register Name Value\n");
- for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl;
- reginfo->name; reginfo++) {
- e1000_regdump(hw, reginfo);
- }
-
- /* Print Tx Ring Summary */
- if (!netdev || !netif_running(netdev))
- goto exit;
-
- dev_info(&adapter->pdev->dev, "Tx Ring Summary\n");
- printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]"
- " leng ntw timestamp\n");
- buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean];
- printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n",
- 0, tx_ring->next_to_use, tx_ring->next_to_clean,
- (unsigned long long)buffer_info->dma,
- buffer_info->length,
- buffer_info->next_to_watch,
- (unsigned long long)buffer_info->time_stamp);
-
- /* Print Tx Ring */
- if (!netif_msg_tx_done(adapter))
- goto rx_ring_summary;
-
- dev_info(&adapter->pdev->dev, "Tx Ring Dump\n");
-
- /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended)
- *
- * Legacy Transmit Descriptor
- * +--------------------------------------------------------------+
- * 0 | Buffer Address [63:0] (Reserved on Write Back) |
- * +--------------------------------------------------------------+
- * 8 | Special | CSS | Status | CMD | CSO | Length |
- * +--------------------------------------------------------------+
- * 63 48 47 36 35 32 31 24 23 16 15 0
- *
- * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload
- * 63 48 47 40 39 32 31 16 15 8 7 0
- * +----------------------------------------------------------------+
- * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS |
- * +----------------------------------------------------------------+
- * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN |
- * +----------------------------------------------------------------+
- * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
- *
- * Extended Data Descriptor (DTYP=0x1)
- * +----------------------------------------------------------------+
- * 0 | Buffer Address [63:0] |
- * +----------------------------------------------------------------+
- * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN |
- * +----------------------------------------------------------------+
- * 63 48 47 40 39 36 35 32 31 24 23 20 19 0
- */
- printk(KERN_INFO "Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]"
- " [bi->dma ] leng ntw timestamp bi->skb "
- "<-- Legacy format\n");
- printk(KERN_INFO "Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]"
- " [bi->dma ] leng ntw timestamp bi->skb "
- "<-- Ext Context format\n");
- printk(KERN_INFO "Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]"
- " [bi->dma ] leng ntw timestamp bi->skb "
- "<-- Ext Data format\n");
- for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) {
- tx_desc = E1000_TX_DESC(*tx_ring, i);
- buffer_info = &tx_ring->buffer_info[i];
- u0 = (struct my_u0 *)tx_desc;
- printk(KERN_INFO "T%c[0x%03X] %016llX %016llX %016llX "
- "%04X %3X %016llX %p",
- (!(le64_to_cpu(u0->b) & (1 << 29)) ? 'l' :
- ((le64_to_cpu(u0->b) & (1 << 20)) ? 'd' : 'c')), i,
- (unsigned long long)le64_to_cpu(u0->a),
- (unsigned long long)le64_to_cpu(u0->b),
- (unsigned long long)buffer_info->dma,
- buffer_info->length, buffer_info->next_to_watch,
- (unsigned long long)buffer_info->time_stamp,
- buffer_info->skb);
- if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean)
- printk(KERN_CONT " NTC/U\n");
- else if (i == tx_ring->next_to_use)
- printk(KERN_CONT " NTU\n");
- else if (i == tx_ring->next_to_clean)
- printk(KERN_CONT " NTC\n");
- else
- printk(KERN_CONT "\n");
-
- if (netif_msg_pktdata(adapter) && buffer_info->dma != 0)
- print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS,
- 16, 1, phys_to_virt(buffer_info->dma),
- buffer_info->length, true);
- }
-
- /* Print Rx Ring Summary */
-rx_ring_summary:
- dev_info(&adapter->pdev->dev, "Rx Ring Summary\n");
- printk(KERN_INFO "Queue [NTU] [NTC]\n");
- printk(KERN_INFO " %5d %5X %5X\n", 0,
- rx_ring->next_to_use, rx_ring->next_to_clean);
-
- /* Print Rx Ring */
- if (!netif_msg_rx_status(adapter))
- goto exit;
-
- dev_info(&adapter->pdev->dev, "Rx Ring Dump\n");
- switch (adapter->rx_ps_pages) {
- case 1:
- case 2:
- case 3:
- /* [Extended] Packet Split Receive Descriptor Format
- *
- * +-----------------------------------------------------+
- * 0 | Buffer Address 0 [63:0] |
- * +-----------------------------------------------------+
- * 8 | Buffer Address 1 [63:0] |
- * +-----------------------------------------------------+
- * 16 | Buffer Address 2 [63:0] |
- * +-----------------------------------------------------+
- * 24 | Buffer Address 3 [63:0] |
- * +-----------------------------------------------------+
- */
- printk(KERN_INFO "R [desc] [buffer 0 63:0 ] "
- "[buffer 1 63:0 ] "
- "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] "
- "[bi->skb] <-- Ext Pkt Split format\n");
- /* [Extended] Receive Descriptor (Write-Back) Format
- *
- * 63 48 47 32 31 13 12 8 7 4 3 0
- * +------------------------------------------------------+
- * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS |
- * | Checksum | Ident | | Queue | | Type |
- * +------------------------------------------------------+
- * 8 | VLAN Tag | Length | Extended Error | Extended Status |
- * +------------------------------------------------------+
- * 63 48 47 32 31 20 19 0
- */
- printk(KERN_INFO "RWB[desc] [ck ipid mrqhsh] "
- "[vl l0 ee es] "
- "[ l3 l2 l1 hs] [reserved ] ---------------- "
- "[bi->skb] <-- Ext Rx Write-Back format\n");
- for (i = 0; i < rx_ring->count; i++) {
- buffer_info = &rx_ring->buffer_info[i];
- rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i);
- u1 = (struct my_u1 *)rx_desc_ps;
- staterr =
- le32_to_cpu(rx_desc_ps->wb.middle.status_error);
- if (staterr & E1000_RXD_STAT_DD) {
- /* Descriptor Done */
- printk(KERN_INFO "RWB[0x%03X] %016llX "
- "%016llX %016llX %016llX "
- "---------------- %p", i,
- (unsigned long long)le64_to_cpu(u1->a),
- (unsigned long long)le64_to_cpu(u1->b),
- (unsigned long long)le64_to_cpu(u1->c),
- (unsigned long long)le64_to_cpu(u1->d),
- buffer_info->skb);
- } else {
- printk(KERN_INFO "R [0x%03X] %016llX "
- "%016llX %016llX %016llX %016llX %p", i,
- (unsigned long long)le64_to_cpu(u1->a),
- (unsigned long long)le64_to_cpu(u1->b),
- (unsigned long long)le64_to_cpu(u1->c),
- (unsigned long long)le64_to_cpu(u1->d),
- (unsigned long long)buffer_info->dma,
- buffer_info->skb);
-
- if (netif_msg_pktdata(adapter))
- print_hex_dump(KERN_INFO, "",
- DUMP_PREFIX_ADDRESS, 16, 1,
- phys_to_virt(buffer_info->dma),
- adapter->rx_ps_bsize0, true);
- }
-
- if (i == rx_ring->next_to_use)
- printk(KERN_CONT " NTU\n");
- else if (i == rx_ring->next_to_clean)
- printk(KERN_CONT " NTC\n");
- else
- printk(KERN_CONT "\n");
- }
- break;
- default:
- case 0:
- /* Legacy Receive Descriptor Format
- *
- * +-----------------------------------------------------+
- * | Buffer Address [63:0] |
- * +-----------------------------------------------------+
- * | VLAN Tag | Errors | Status 0 | Packet csum | Length |
- * +-----------------------------------------------------+
- * 63 48 47 40 39 32 31 16 15 0
- */
- printk(KERN_INFO "Rl[desc] [address 63:0 ] "
- "[vl er S cks ln] [bi->dma ] [bi->skb] "
- "<-- Legacy format\n");
- for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) {
- rx_desc = E1000_RX_DESC(*rx_ring, i);
- buffer_info = &rx_ring->buffer_info[i];
- u0 = (struct my_u0 *)rx_desc;
- printk(KERN_INFO "Rl[0x%03X] %016llX %016llX "
- "%016llX %p", i,
- (unsigned long long)le64_to_cpu(u0->a),
- (unsigned long long)le64_to_cpu(u0->b),
- (unsigned long long)buffer_info->dma,
- buffer_info->skb);
- if (i == rx_ring->next_to_use)
- printk(KERN_CONT " NTU\n");
- else if (i == rx_ring->next_to_clean)
- printk(KERN_CONT " NTC\n");
- else
- printk(KERN_CONT "\n");
-
- if (netif_msg_pktdata(adapter))
- print_hex_dump(KERN_INFO, "",
- DUMP_PREFIX_ADDRESS,
- 16, 1,
- phys_to_virt(buffer_info->dma),
- adapter->rx_buffer_len, true);
- }
- }
-
-exit:
- return;
-}
-
-/**
- * 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, __le16 vlan)
-{
- u16 tag = le16_to_cpu(vlan);
- skb->protocol = eth_type_trans(skb, netdev);
-
- if (status & E1000_RXD_STAT_VP)
- __vlan_hwaccel_put_tag(skb, tag);
-
- napi_gro_receive(&adapter->napi, skb);
-}
-
-/**
- * e1000_rx_checksum - Receive Checksum Offload
- * @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_checksum_none_assert(skb);
-
- /* 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.
- */
- __sum16 sum = (__force __sum16)htons(csum);
- skb->csum = csum_unfold(~sum);
- 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, gfp_t gfp)
-{
- 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;
-
- 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_ip_align(netdev, bufsz, gfp);
- if (!skb) {
- /* Better luck next round */
- adapter->alloc_rx_buff_failed++;
- break;
- }
-
- buffer_info->skb = skb;
-map_skb:
- buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
- adapter->rx_buffer_len,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(&pdev->dev, 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);
-
- if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 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);
- }
- i++;
- if (i == rx_ring->count)
- i = 0;
- buffer_info = &rx_ring->buffer_info[i];
- }
-
- rx_ring->next_to_use = i;
-}
-
-/**
- * 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, gfp_t gfp)
-{
- 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 = &buffer_info->ps_pages[j];
- if (j >= adapter->rx_ps_pages) {
- /* all unused desc entries get hw null ptr */
- rx_desc->read.buffer_addr[j + 1] =
- ~cpu_to_le64(0);
- continue;
- }
- if (!ps_page->page) {
- ps_page->page = alloc_page(gfp);
- if (!ps_page->page) {
- adapter->alloc_rx_buff_failed++;
- goto no_buffers;
- }
- ps_page->dma = dma_map_page(&pdev->dev,
- ps_page->page,
- 0, PAGE_SIZE,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(&pdev->dev,
- 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);
- }
-
- skb = __netdev_alloc_skb_ip_align(netdev,
- adapter->rx_ps_bsize0,
- gfp);
-
- if (!skb) {
- adapter->alloc_rx_buff_failed++;
- break;
- }
-
- buffer_info->skb = skb;
- buffer_info->dma = dma_map_single(&pdev->dev, skb->data,
- adapter->rx_ps_bsize0,
- DMA_FROM_DEVICE);
- if (dma_mapping_error(&pdev->dev, 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);
-
- if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 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 << 1, adapter->hw.hw_addr + rx_ring->tail);
- }
-
- i++;
- if (i == rx_ring->count)
- i = 0;
- buffer_info = &rx_ring->buffer_info[i];
- }
-
-no_buffers:
- rx_ring->next_to_use = i;
-}
-
-/**
- * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers
- * @adapter: address of board private structure
- * @cleaned_count: number of buffers to allocate this pass
- **/
-
-static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter,
- int cleaned_count, gfp_t gfp)
-{
- struct net_device *netdev = adapter->netdev;
- struct pci_dev *pdev = adapter->pdev;
- struct e1000_rx_desc *rx_desc;
- struct e1000_ring *rx_ring = adapter->rx_ring;
- struct e1000_buffer *buffer_info;
- struct sk_buff *skb;
- unsigned int i;
- unsigned int bufsz = 256 - 16 /* for skb_reserve */;
-
- 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_ip_align(netdev, bufsz, gfp);
- if (unlikely(!skb)) {
- /* Better luck next round */
- adapter->alloc_rx_buff_failed++;
- break;
- }
-
- buffer_info->skb = skb;
-check_page:
- /* allocate a new page if necessary */
- if (!buffer_info->page) {
- buffer_info->page = alloc_page(gfp);
- if (unlikely(!buffer_info->page)) {
- adapter->alloc_rx_buff_failed++;
- break;
- }
- }
-
- if (!buffer_info->dma)
- buffer_info->dma = dma_map_page(&pdev->dev,
- buffer_info->page, 0,
- PAGE_SIZE,
- DMA_FROM_DEVICE);
-
- rx_desc = E1000_RX_DESC(*rx_ring, i);
- rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma);
-
- if (unlikely(++i == rx_ring->count))
- i = 0;
- buffer_info = &rx_ring->buffer_info[i];
- }
-
- if (likely(rx_ring->next_to_use != i)) {
- rx_ring->next_to_use = i;
- if (unlikely(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_hw *hw = &adapter->hw;
- 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)++;
- rmb(); /* read descriptor and rx_buffer_info after status DD */
-
- 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++;
- dma_unmap_single(&pdev->dev,
- buffer_info->dma,
- adapter->rx_buffer_len,
- DMA_FROM_DEVICE);
- buffer_info->dma = 0;
-
- length = le16_to_cpu(rx_desc->length);
-
- /*
- * !EOP means multiple descriptors were used to store a single
- * packet, if that's the case we need to toss it. In fact, we
- * need to toss every packet with the EOP bit clear and the
- * next frame that _does_ have the EOP bit set, as it is by
- * definition only a frame fragment
- */
- if (unlikely(!(status & E1000_RXD_STAT_EOP)))
- adapter->flags2 |= FLAG2_IS_DISCARDING;
-
- if (adapter->flags2 & FLAG2_IS_DISCARDING) {
- /* All receives must fit into a single buffer */
- e_dbg("Receive packet consumed multiple buffers\n");
- /* recycle */
- buffer_info->skb = skb;
- if (status & E1000_RXD_STAT_EOP)
- adapter->flags2 &= ~FLAG2_IS_DISCARDING;
- 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 */
- if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
- length -= 4;
-
- 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_ip_align(netdev, length);
- if (new_skb) {
- skb_copy_to_linear_data_offset(new_skb,
- -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,
- GFP_ATOMIC);
- 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, GFP_ATOMIC);
-
- adapter->total_rx_bytes += total_rx_bytes;
- adapter->total_rx_packets += total_rx_packets;
- return cleaned;
-}
-
-static void e1000_put_txbuf(struct e1000_adapter *adapter,
- struct e1000_buffer *buffer_info)
-{
- if (buffer_info->dma) {
- if (buffer_info->mapped_as_page)
- dma_unmap_page(&adapter->pdev->dev, buffer_info->dma,
- buffer_info->length, DMA_TO_DEVICE);
- else
- dma_unmap_single(&adapter->pdev->dev, buffer_info->dma,
- buffer_info->length, DMA_TO_DEVICE);
- buffer_info->dma = 0;
- }
- if (buffer_info->skb) {
- dev_kfree_skb_any(buffer_info->skb);
- buffer_info->skb = NULL;
- }
- buffer_info->time_stamp = 0;
-}
-
-static void e1000_print_hw_hang(struct work_struct *work)
-{
- struct e1000_adapter *adapter = container_of(work,
- struct e1000_adapter,
- print_hang_task);
- 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 e1000_hw *hw = &adapter->hw;
- u16 phy_status, phy_1000t_status, phy_ext_status;
- u16 pci_status;
-
- if (test_bit(__E1000_DOWN, &adapter->state))
- return;
-
- e1e_rphy(hw, PHY_STATUS, &phy_status);
- e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status);
- e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status);
-
- pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status);
-
- /* detected Hardware unit hang */
- e_err("Detected Hardware 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"
- "MAC Status <%x>\n"
- "PHY Status <%x>\n"
- "PHY 1000BASE-T Status <%x>\n"
- "PHY Extended Status <%x>\n"
- "PCI 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,
- er32(STATUS),
- phy_status,
- phy_1000t_status,
- phy_ext_status,
- pci_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;
- 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)) &&
- (count < tx_ring->count)) {
- bool cleaned = false;
- rmb(); /* read buffer_info after eop_desc */
- for (; !cleaned; count++) {
- tx_desc = E1000_TX_DESC(*tx_ring, i);
- buffer_info = &tx_ring->buffer_info[i];
- cleaned = (i == eop);
-
- if (cleaned) {
- total_tx_packets += buffer_info->segs;
- total_tx_bytes += buffer_info->bytecount;
- }
-
- e1000_put_txbuf(adapter, buffer_info);
- tx_desc->upper.data = 0;
-
- i++;
- if (i == tx_ring->count)
- i = 0;
- }
-
- if (i == tx_ring->next_to_use)
- break;
- eop = tx_ring->buffer_info[i].next_to_watch;
- eop_desc = E1000_TX_DESC(*tx_ring, eop);
- }
-
- tx_ring->next_to_clean = i;
-
-#define TX_WAKE_THRESHOLD 32
- if (count && 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[i].time_stamp &&
- time_after(jiffies, tx_ring->buffer_info[i].time_stamp
- + (adapter->tx_timeout_factor * HZ)) &&
- !(er32(STATUS) & E1000_STATUS_TXOFF)) {
- schedule_work(&adapter->print_hang_task);
- netif_stop_queue(netdev);
- }
- }
- adapter->total_tx_bytes += total_tx_bytes;
- adapter->total_tx_packets += total_tx_packets;
- return count < tx_ring->count;
-}
-
-/**
- * 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)
-{
- struct e1000_hw *hw = &adapter->hw;
- 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;
- rmb(); /* read descriptor and rx_buffer_info after status DD */
-
- /* 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++;
- dma_unmap_single(&pdev->dev, buffer_info->dma,
- adapter->rx_ps_bsize0, DMA_FROM_DEVICE);
- buffer_info->dma = 0;
-
- /* see !EOP comment in other Rx routine */
- if (!(staterr & E1000_RXD_STAT_EOP))
- adapter->flags2 |= FLAG2_IS_DISCARDING;
-
- if (adapter->flags2 & FLAG2_IS_DISCARDING) {
- e_dbg("Packet Split buffers didn't pick up the full "
- "packet\n");
- dev_kfree_skb_irq(skb);
- if (staterr & E1000_RXD_STAT_EOP)
- adapter->flags2 &= ~FLAG2_IS_DISCARDING;
- 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) {
- e_dbg("Last part of the packet spanning multiple "
- "descriptors\n");
- 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
- * only valid in softirq (napi) context to call kmap_*
- */
- if (l1 && (l1 <= copybreak) &&
- ((length + l1) <= adapter->rx_ps_bsize0)) {
- u8 *vaddr;
-
- ps_page = &buffer_info->ps_pages[0];
-
- /*
- * there is no documentation about how to call
- * kmap_atomic, so we can't hold the mapping
- * very long
- */
- dma_sync_single_for_cpu(&pdev->dev, ps_page->dma,
- PAGE_SIZE, DMA_FROM_DEVICE);
- vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ);
- memcpy(skb_tail_pointer(skb), vaddr, l1);
- kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ);
- dma_sync_single_for_device(&pdev->dev, ps_page->dma,
- PAGE_SIZE, DMA_FROM_DEVICE);
-
- /* remove the CRC */
- if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
- 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 = &buffer_info->ps_pages[j];
- dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
- DMA_FROM_DEVICE);
- 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
- */
- if (!(adapter->flags2 & FLAG2_CRC_STRIPPING))
- 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,
- GFP_ATOMIC);
- 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, GFP_ATOMIC);
-
- adapter->total_rx_bytes += total_rx_bytes;
- adapter->total_rx_packets += total_rx_packets;
- return cleaned;
-}
-
-/**
- * e1000_consume_page - helper function
- **/
-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;
-}
-
-/**
- * e1000_clean_jumbo_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_jumbo_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 = false;
- 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)++;
- rmb(); /* read descriptor and rx_buffer_info after status DD */
-
- 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 = true;
- cleaned_count++;
- dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE,
- DMA_FROM_DEVICE);
- buffer_info->dma = 0;
-
- length = le16_to_cpu(rx_desc->length);
-
- /* errors is only valid for DD + EOP descriptors */
- if (unlikely((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_irq(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);
-
- /* 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)) {
- e_err("pskb_may_pull failed.\n");
- dev_kfree_skb_irq(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 (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) {
- adapter->alloc_rx_buf(adapter, cleaned_count,
- GFP_ATOMIC);
- 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, GFP_ATOMIC);
-
- adapter->total_rx_bytes += total_rx_bytes;
- adapter->total_rx_packets += total_rx_packets;
- 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 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)
- dma_unmap_single(&pdev->dev, buffer_info->dma,
- adapter->rx_buffer_len,
- DMA_FROM_DEVICE);
- else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq)
- dma_unmap_page(&pdev->dev, buffer_info->dma,
- PAGE_SIZE,
- DMA_FROM_DEVICE);
- else if (adapter->clean_rx == e1000_clean_rx_irq_ps)
- dma_unmap_single(&pdev->dev, buffer_info->dma,
- adapter->rx_ps_bsize0,
- DMA_FROM_DEVICE);
- 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 = &buffer_info->ps_pages[j];
- if (!ps_page->page)
- break;
- dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE,
- DMA_FROM_DEVICE);
- 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;
- }
-
- /* 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;
- adapter->flags2 &= ~FLAG2_IS_DISCARDING;
-
- writel(0, adapter->hw.hw_addr + rx_ring->head);
- writel(0, adapter->hw.hw_addr + rx_ring->tail);
-}
-
-static void e1000e_downshift_workaround(struct work_struct *work)
-{
- struct e1000_adapter *adapter = container_of(work,
- struct e1000_adapter, downshift_task);
-
- if (test_bit(__E1000_DOWN, &adapter->state))
- return;
-
- e1000e_gig_downshift_workaround_ich8lan(&adapter->hw);
-}
-
-/**
- * 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
- */
-
- if (icr & 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)))
- schedule_work(&adapter->downshift_task);
-
- /*
- * 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);
- adapter->flags |= FLAG_RX_RESTART_NOW;
- }
- /* guard against interrupt when we're going down */
- if (!test_bit(__E1000_DOWN, &adapter->state))
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
- }
-
- if (napi_schedule_prep(&adapter->napi)) {
- adapter->total_tx_bytes = 0;
- adapter->total_tx_packets = 0;
- adapter->total_rx_bytes = 0;
- adapter->total_rx_packets = 0;
- __napi_schedule(&adapter->napi);
- }
-
- 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 || test_bit(__E1000_DOWN, &adapter->state))
- 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
- */
-
- if (icr & 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)))
- schedule_work(&adapter->downshift_task);
-
- /*
- * 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);
- adapter->flags |= FLAG_RX_RESTART_NOW;
- }
- /* guard against interrupt when we're going down */
- if (!test_bit(__E1000_DOWN, &adapter->state))
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
- }
-
- if (napi_schedule_prep(&adapter->napi)) {
- adapter->total_tx_bytes = 0;
- adapter->total_tx_packets = 0;
- adapter->total_rx_bytes = 0;
- adapter->total_rx_packets = 0;
- __napi_schedule(&adapter->napi);
- }
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t e1000_msix_other(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);
-
- if (!(icr & E1000_ICR_INT_ASSERTED)) {
- if (!test_bit(__E1000_DOWN, &adapter->state))
- ew32(IMS, E1000_IMS_OTHER);
- return IRQ_NONE;
- }
-
- if (icr & adapter->eiac_mask)
- ew32(ICS, (icr & adapter->eiac_mask));
-
- if (icr & E1000_ICR_OTHER) {
- if (!(icr & E1000_ICR_LSC))
- goto no_link_interrupt;
- hw->mac.get_link_status = 1;
- /* guard against interrupt when we're going down */
- if (!test_bit(__E1000_DOWN, &adapter->state))
- mod_timer(&adapter->watchdog_timer, jiffies + 1);
- }
-
-no_link_interrupt:
- if (!test_bit(__E1000_DOWN, &adapter->state))
- ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER);
-
- return IRQ_HANDLED;
-}
-
-
-static irqreturn_t e1000_intr_msix_tx(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct e1000_adapter *adapter = netdev_priv(netdev);
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_ring *tx_ring = adapter->tx_ring;
-
-
- adapter->total_tx_bytes = 0;
- adapter->total_tx_packets = 0;
-
- if (!e1000_clean_tx_irq(adapter))
- /* Ring was not completely cleaned, so fire another interrupt */
- ew32(ICS, tx_ring->ims_val);
-
- return IRQ_HANDLED;
-}
-
-static irqreturn_t e1000_intr_msix_rx(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- /* Write the ITR value calculated at the end of the
- * previous interrupt.
- */
- if (adapter->rx_ring->set_itr) {
- writel(1000000000 / (adapter->rx_ring->itr_val * 256),
- adapter->hw.hw_addr + adapter->rx_ring->itr_register);
- adapter->rx_ring->set_itr = 0;
- }
-
- if (napi_schedule_prep(&adapter->napi)) {
- adapter->total_rx_bytes = 0;
- adapter->total_rx_packets = 0;
- __napi_schedule(&adapter->napi);
- }
- return IRQ_HANDLED;
-}
-
-/**
- * e1000_configure_msix - Configure MSI-X hardware
- *
- * e1000_configure_msix sets up the hardware to properly
- * generate MSI-X interrupts.
- **/
-static void e1000_configure_msix(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_ring *rx_ring = adapter->rx_ring;
- struct e1000_ring *tx_ring = adapter->tx_ring;
- int vector = 0;
- u32 ctrl_ext, ivar = 0;
-
- adapter->eiac_mask = 0;
-
- /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */
- if (hw->mac.type == e1000_82574) {
- u32 rfctl = er32(RFCTL);
- rfctl |= E1000_RFCTL_ACK_DIS;
- ew32(RFCTL, rfctl);
- }
-
-#define E1000_IVAR_INT_ALLOC_VALID 0x8
- /* Configure Rx vector */
- rx_ring->ims_val = E1000_IMS_RXQ0;
- adapter->eiac_mask |= rx_ring->ims_val;
- if (rx_ring->itr_val)
- writel(1000000000 / (rx_ring->itr_val * 256),
- hw->hw_addr + rx_ring->itr_register);
- else
- writel(1, hw->hw_addr + rx_ring->itr_register);
- ivar = E1000_IVAR_INT_ALLOC_VALID | vector;
-
- /* Configure Tx vector */
- tx_ring->ims_val = E1000_IMS_TXQ0;
- vector++;
- if (tx_ring->itr_val)
- writel(1000000000 / (tx_ring->itr_val * 256),
- hw->hw_addr + tx_ring->itr_register);
- else
- writel(1, hw->hw_addr + tx_ring->itr_register);
- adapter->eiac_mask |= tx_ring->ims_val;
- ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8);
-
- /* set vector for Other Causes, e.g. link changes */
- vector++;
- ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16);
- if (rx_ring->itr_val)
- writel(1000000000 / (rx_ring->itr_val * 256),
- hw->hw_addr + E1000_EITR_82574(vector));
- else
- writel(1, hw->hw_addr + E1000_EITR_82574(vector));
-
- /* Cause Tx interrupts on every write back */
- ivar |= (1 << 31);
-
- ew32(IVAR, ivar);
-
- /* enable MSI-X PBA support */
- ctrl_ext = er32(CTRL_EXT);
- ctrl_ext |= E1000_CTRL_EXT_PBA_CLR;
-
- /* Auto-Mask Other interrupts upon ICR read */
-#define E1000_EIAC_MASK_82574 0x01F00000
- ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER);
- ctrl_ext |= E1000_CTRL_EXT_EIAME;
- ew32(CTRL_EXT, ctrl_ext);
- e1e_flush();
-}
-
-void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter)
-{
- if (adapter->msix_entries) {
- pci_disable_msix(adapter->pdev);
- kfree(adapter->msix_entries);
- adapter->msix_entries = NULL;
- } else if (adapter->flags & FLAG_MSI_ENABLED) {
- pci_disable_msi(adapter->pdev);
- adapter->flags &= ~FLAG_MSI_ENABLED;
- }
-}
-
-/**
- * e1000e_set_interrupt_capability - set MSI or MSI-X if supported
- *
- * Attempt to configure interrupts using the best available
- * capabilities of the hardware and kernel.
- **/
-void e1000e_set_interrupt_capability(struct e1000_adapter *adapter)
-{
- int err;
- int i;
-
- switch (adapter->int_mode) {
- case E1000E_INT_MODE_MSIX:
- if (adapter->flags & FLAG_HAS_MSIX) {
- adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */
- adapter->msix_entries = kcalloc(adapter->num_vectors,
- sizeof(struct msix_entry),
- GFP_KERNEL);
- if (adapter->msix_entries) {
- for (i = 0; i < adapter->num_vectors; i++)
- adapter->msix_entries[i].entry = i;
-
- err = pci_enable_msix(adapter->pdev,
- adapter->msix_entries,
- adapter->num_vectors);
- if (err == 0)
- return;
- }
- /* MSI-X failed, so fall through and try MSI */
- e_err("Failed to initialize MSI-X interrupts. "
- "Falling back to MSI interrupts.\n");
- e1000e_reset_interrupt_capability(adapter);
- }
- adapter->int_mode = E1000E_INT_MODE_MSI;
- /* Fall through */
- case E1000E_INT_MODE_MSI:
- if (!pci_enable_msi(adapter->pdev)) {
- adapter->flags |= FLAG_MSI_ENABLED;
- } else {
- adapter->int_mode = E1000E_INT_MODE_LEGACY;
- e_err("Failed to initialize MSI interrupts. Falling "
- "back to legacy interrupts.\n");
- }
- /* Fall through */
- case E1000E_INT_MODE_LEGACY:
- /* Don't do anything; this is the system default */
- break;
- }
-
- /* store the number of vectors being used */
- adapter->num_vectors = 1;
-}
-
-/**
- * e1000_request_msix - Initialize MSI-X interrupts
- *
- * e1000_request_msix allocates MSI-X vectors and requests interrupts from the
- * kernel.
- **/
-static int e1000_request_msix(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- int err = 0, vector = 0;
-
- if (strlen(netdev->name) < (IFNAMSIZ - 5))
- snprintf(adapter->rx_ring->name,
- sizeof(adapter->rx_ring->name) - 1,
- "%s-rx-0", netdev->name);
- else
- memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ);
- err = request_irq(adapter->msix_entries[vector].vector,
- e1000_intr_msix_rx, 0, adapter->rx_ring->name,
- netdev);
- if (err)
- goto out;
- adapter->rx_ring->itr_register = E1000_EITR_82574(vector);
- adapter->rx_ring->itr_val = adapter->itr;
- vector++;
-
- if (strlen(netdev->name) < (IFNAMSIZ - 5))
- snprintf(adapter->tx_ring->name,
- sizeof(adapter->tx_ring->name) - 1,
- "%s-tx-0", netdev->name);
- else
- memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ);
- err = request_irq(adapter->msix_entries[vector].vector,
- e1000_intr_msix_tx, 0, adapter->tx_ring->name,
- netdev);
- if (err)
- goto out;
- adapter->tx_ring->itr_register = E1000_EITR_82574(vector);
- adapter->tx_ring->itr_val = adapter->itr;
- vector++;
-
- err = request_irq(adapter->msix_entries[vector].vector,
- e1000_msix_other, 0, netdev->name, netdev);
- if (err)
- goto out;
-
- e1000_configure_msix(adapter);
- return 0;
-out:
- return err;
-}
-
-/**
- * e1000_request_irq - initialize interrupts
- *
- * Attempts to configure interrupts using the best available
- * capabilities of the hardware and kernel.
- **/
-static int e1000_request_irq(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- int err;
-
- if (adapter->msix_entries) {
- err = e1000_request_msix(adapter);
- if (!err)
- return err;
- /* fall back to MSI */
- e1000e_reset_interrupt_capability(adapter);
- adapter->int_mode = E1000E_INT_MODE_MSI;
- e1000e_set_interrupt_capability(adapter);
- }
- if (adapter->flags & FLAG_MSI_ENABLED) {
- err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0,
- netdev->name, netdev);
- if (!err)
- return err;
-
- /* fall back to legacy interrupt */
- e1000e_reset_interrupt_capability(adapter);
- adapter->int_mode = E1000E_INT_MODE_LEGACY;
- }
-
- err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED,
- netdev->name, netdev);
- if (err)
- e_err("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;
-
- if (adapter->msix_entries) {
- int vector = 0;
-
- free_irq(adapter->msix_entries[vector].vector, netdev);
- vector++;
-
- free_irq(adapter->msix_entries[vector].vector, netdev);
- vector++;
-
- /* Other Causes interrupt vector */
- free_irq(adapter->msix_entries[vector].vector, netdev);
- return;
- }
-
- free_irq(adapter->pdev->irq, netdev);
-}
-
-/**
- * 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;
-
- ew32(IMC, ~0);
- if (adapter->msix_entries)
- ew32(EIAC_82574, 0);
- e1e_flush();
-
- if (adapter->msix_entries) {
- int i;
- for (i = 0; i < adapter->num_vectors; i++)
- synchronize_irq(adapter->msix_entries[i].vector);
- } else {
- 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 (adapter->msix_entries) {
- ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574);
- ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC);
- } else {
- ew32(IMS, IMS_ENABLE_MASK);
- }
- e1e_flush();
-}
-
-/**
- * e1000e_get_hw_control - get control of the h/w from f/w
- * @adapter: address of board private structure
- *
- * e1000e_get_hw_control sets {CTRL_EXT|SWSM}: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.
- **/
-void e1000e_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);
- }
-}
-
-/**
- * e1000e_release_hw_control - release control of the h/w to f/w
- * @adapter: address of board private structure
- *
- * e1000e_release_hw_control resets {CTRL_EXT|SWSM}: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.
- *
- **/
-void e1000e_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);
- }
-}
-
-/**
- * @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 = vzalloc(size);
- if (!tx_ring->buffer_info)
- goto err;
-
- /* 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;
-
- return 0;
-err:
- vfree(tx_ring->buffer_info);
- e_err("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;
- struct e1000_buffer *buffer_info;
- int i, size, desc_len, err = -ENOMEM;
-
- size = sizeof(struct e1000_buffer) * rx_ring->count;
- rx_ring->buffer_info = vzalloc(size);
- if (!rx_ring->buffer_info)
- goto err;
-
- for (i = 0; i < rx_ring->count; i++) {
- buffer_info = &rx_ring->buffer_info[i];
- buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS,
- sizeof(struct e1000_ps_page),
- GFP_KERNEL);
- if (!buffer_info->ps_pages)
- goto err_pages;
- }
-
- 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_pages;
-
- rx_ring->next_to_clean = 0;
- rx_ring->next_to_use = 0;
- rx_ring->rx_skb_top = NULL;
-
- return 0;
-
-err_pages:
- for (i = 0; i < rx_ring->count; i++) {
- buffer_info = &rx_ring->buffer_info[i];
- kfree(buffer_info->ps_pages);
- }
-err:
- vfree(rx_ring->buffer_info);
- e_err("Unable to allocate memory for the receive 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;
- int i;
-
- e1000_clean_rx_ring(adapter);
-
- for (i = 0; i < rx_ring->count; i++)
- kfree(rx_ring->buffer_info[i].ps_pages);
-
- vfree(rx_ring->buffer_info);
- rx_ring->buffer_info = 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
- * @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
- *
- * 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.
- **/
-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;
- }
-
- if (adapter->flags2 & FLAG2_DISABLE_AIM) {
- new_itr = 0;
- 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;
- adapter->rx_ring->itr_val = new_itr;
- if (adapter->msix_entries)
- adapter->rx_ring->set_itr = 1;
- else
- if (new_itr)
- ew32(ITR, 1000000000 / (new_itr * 256));
- else
- ew32(ITR, 0);
- }
-}
-
-/**
- * e1000_alloc_queues - Allocate memory for all rings
- * @adapter: board private structure to initialize
- **/
-static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter)
-{
- 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;
-
- return 0;
-err:
- e_err("Unable to allocate memory for queues\n");
- kfree(adapter->rx_ring);
- kfree(adapter->tx_ring);
- return -ENOMEM;
-}
-
-/**
- * e1000_clean - NAPI Rx polling callback
- * @napi: struct associated with this polling callback
- * @budget: amount of packets driver is allowed to process this poll
- **/
-static int e1000_clean(struct napi_struct *napi, int budget)
-{
- struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi);
- struct e1000_hw *hw = &adapter->hw;
- struct net_device *poll_dev = adapter->netdev;
- int tx_cleaned = 1, work_done = 0;
-
- adapter = netdev_priv(poll_dev);
-
- if (adapter->msix_entries &&
- !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val))
- goto clean_rx;
-
- tx_cleaned = e1000_clean_tx_irq(adapter);
-
-clean_rx:
- adapter->clean_rx(adapter, &work_done, budget);
-
- if (!tx_cleaned)
- work_done = budget;
-
- /* If budget not fully consumed, exit the polling mode */
- if (work_done < budget) {
- if (adapter->itr_setting & 3)
- e1000_set_itr(adapter);
- napi_complete(napi);
- if (!test_bit(__E1000_DOWN, &adapter->state)) {
- if (adapter->msix_entries)
- ew32(IMS, adapter->rx_ring->ims_val);
- else
- 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 */
- if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
- index = (vid >> 5) & 0x7F;
- vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
- vfta |= (1 << (vid & 0x1F));
- hw->mac.ops.write_vfta(hw, index, vfta);
- }
-
- set_bit(vid, adapter->active_vlans);
-}
-
-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;
-
- if ((adapter->hw.mng_cookie.status &
- E1000_MNG_DHCP_COOKIE_STATUS_VLAN) &&
- (vid == adapter->mng_vlan_id)) {
- /* release control to f/w */
- e1000e_release_hw_control(adapter);
- return;
- }
-
- /* remove VID from filter table */
- if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
- index = (vid >> 5) & 0x7F;
- vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index);
- vfta &= ~(1 << (vid & 0x1F));
- hw->mac.ops.write_vfta(hw, index, vfta);
- }
-
- clear_bit(vid, adapter->active_vlans);
-}
-
-/**
- * e1000e_vlan_filter_disable - helper to disable hw VLAN filtering
- * @adapter: board private structure to initialize
- **/
-static void e1000e_vlan_filter_disable(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct e1000_hw *hw = &adapter->hw;
- u32 rctl;
-
- if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) {
- /* disable VLAN receive filtering */
- rctl = er32(RCTL);
- rctl &= ~(E1000_RCTL_VFE | E1000_RCTL_CFIEN);
- 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;
- }
- }
-}
-
-/**
- * e1000e_vlan_filter_enable - helper to enable HW VLAN filtering
- * @adapter: board private structure to initialize
- **/
-static void e1000e_vlan_filter_enable(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 rctl;
-
- 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);
- }
-}
-
-/**
- * e1000e_vlan_strip_enable - helper to disable HW VLAN stripping
- * @adapter: board private structure to initialize
- **/
-static void e1000e_vlan_strip_disable(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 ctrl;
-
- /* disable VLAN tag insert/strip */
- ctrl = er32(CTRL);
- ctrl &= ~E1000_CTRL_VME;
- ew32(CTRL, ctrl);
-}
-
-/**
- * e1000e_vlan_strip_enable - helper to enable HW VLAN stripping
- * @adapter: board private structure to initialize
- **/
-static void e1000e_vlan_strip_enable(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 ctrl;
-
- /* enable VLAN tag insert/strip */
- ctrl = er32(CTRL);
- ctrl |= E1000_CTRL_VME;
- ew32(CTRL, ctrl);
-}
-
-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->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))
- e1000_vlan_rx_kill_vid(netdev, old_vid);
-}
-
-static void e1000_restore_vlan(struct e1000_adapter *adapter)
-{
- u16 vid;
-
- e1000_vlan_rx_add_vid(adapter->netdev, 0);
-
- for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID)
- e1000_vlan_rx_add_vid(adapter->netdev, vid);
-}
-
-static void e1000_init_manageability_pt(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 manc, manc2h, mdef, i, j;
-
- if (!(adapter->flags & FLAG_MNG_PT_ENABLED))
- return;
-
- manc = er32(MANC);
-
- /*
- * 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);
-
- switch (hw->mac.type) {
- default:
- manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664);
- break;
- case e1000_82574:
- case e1000_82583:
- /*
- * Check if IPMI pass-through decision filter already exists;
- * if so, enable it.
- */
- for (i = 0, j = 0; i < 8; i++) {
- mdef = er32(MDEF(i));
-
- /* Ignore filters with anything other than IPMI ports */
- if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
- continue;
-
- /* Enable this decision filter in MANC2H */
- if (mdef)
- manc2h |= (1 << i);
-
- j |= mdef;
- }
-
- if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664))
- break;
-
- /* Create new decision filter in an empty filter */
- for (i = 0, j = 0; i < 8; i++)
- if (er32(MDEF(i)) == 0) {
- ew32(MDEF(i), (E1000_MDEF_PORT_623 |
- E1000_MDEF_PORT_664));
- manc2h |= (1 << 1);
- j++;
- break;
- }
-
- if (!j)
- e_warn("Unable to create IPMI pass-through filter\n");
- break;
- }
-
- ew32(MANC2H, manc2h);
- ew32(MANC, manc);
-}
-
-/**
- * e1000_configure_tx - Configure 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_BIT_MASK(32)));
- 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);
-
- if (adapter->flags2 & FLAG2_DMA_BURST) {
- u32 txdctl = er32(TXDCTL(0));
- txdctl &= ~(E1000_TXDCTL_PTHRESH | E1000_TXDCTL_HTHRESH |
- E1000_TXDCTL_WTHRESH);
- /*
- * set up some performance related parameters to encourage the
- * hardware to use the bus more efficiently in bursts, depends
- * on the tx_int_delay to be enabled,
- * wthresh = 5 ==> burst write a cacheline (64 bytes) at a time
- * hthresh = 1 ==> prefetch when one or more available
- * pthresh = 0x1f ==> prefetch if internal cache 31 or less
- * BEWARE: this seems to work but should be considered first if
- * there are Tx hangs or other Tx related bugs
- */
- txdctl |= E1000_TXDCTL_DMA_BURST_ENABLE;
- ew32(TXDCTL(0), txdctl);
- /* erratum work around: set txdctl the same for both queues */
- ew32(TXDCTL(1), txdctl);
- }
-
- /* 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(TARC(0));
- /*
- * 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(TARC(0), tarc);
- }
-
- /* errata: program both queues to unweighted RR */
- if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) {
- tarc = er32(TARC(0));
- tarc |= 1;
- ew32(TARC(0), tarc);
- tarc = er32(TARC(1));
- tarc |= 1;
- ew32(TARC(1), tarc);
- }
-
- /* 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);
-
- e1000e_config_collision_dist(hw);
-}
-
-/**
- * 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 pages = 0;
-
- /* Workaround Si errata on 82579 - configure jumbo frame flow */
- if (hw->mac.type == e1000_pch2lan) {
- s32 ret_val;
-
- if (adapter->netdev->mtu > ETH_DATA_LEN)
- ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true);
- else
- ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false);
-
- if (ret_val)
- e_dbg("failed to enable jumbo frame workaround mode\n");
- }
-
- /* 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;
-
- /* Some systems expect that the CRC is included in SMBUS traffic. The
- * hardware strips the CRC before sending to both SMBUS (BMC) and to
- * host memory when this is enabled
- */
- if (adapter->flags2 & FLAG2_CRC_STRIPPING)
- rctl |= E1000_RCTL_SECRC;
-
- /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */
- if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) {
- u16 phy_data;
-
- e1e_rphy(hw, PHY_REG(770, 26), &phy_data);
- phy_data &= 0xfff8;
- phy_data |= (1 << 2);
- e1e_wphy(hw, PHY_REG(770, 26), phy_data);
-
- e1e_rphy(hw, 22, &phy_data);
- phy_data &= 0x0fff;
- phy_data |= (1 << 14);
- e1e_wphy(hw, 0x10, 0x2823);
- e1e_wphy(hw, 0x11, 0x0003);
- e1e_wphy(hw, 22, phy_data);
- }
-
- /* Setup buffer sizes */
- rctl &= ~E1000_RCTL_SZ_4096;
- rctl |= E1000_RCTL_BSEX;
- switch (adapter->rx_buffer_len) {
- 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.
- */
- pages = PAGE_USE_COUNT(adapter->netdev->mtu);
- if (!(adapter->flags & FLAG_HAS_ERT) && (pages <= 3) &&
- (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE))
- adapter->rx_ps_pages = pages;
- else
- adapter->rx_ps_pages = 0;
-
- if (adapter->rx_ps_pages) {
- u32 psrctl = 0;
-
- /* 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);
-
- /* Enable Packet split descriptors */
- rctl |= E1000_RCTL_DTYP_PS;
-
- 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);
- /* just started the receive unit, no need to restart */
- adapter->flags &= ~FLAG_RX_RESTART_NOW;
-}
-
-/**
- * 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 + ETH_FCS_LEN) {
- rdlen = rx_ring->count * sizeof(struct e1000_rx_desc);
- adapter->clean_rx = e1000_clean_jumbo_rx_irq;
- adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers;
- } 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();
- usleep_range(10000, 20000);
-
- if (adapter->flags2 & FLAG2_DMA_BURST) {
- /*
- * set the writeback threshold (only takes effect if the RDTR
- * is set). set GRAN=1 and write back up to 0x4 worth, and
- * enable prefetching of 0x20 Rx descriptors
- * granularity = 01
- * wthresh = 04,
- * hthresh = 04,
- * pthresh = 0x20
- */
- ew32(RXDCTL(0), E1000_RXDCTL_DMA_BURST_ENABLE);
- ew32(RXDCTL(1), E1000_RXDCTL_DMA_BURST_ENABLE);
-
- /*
- * override the delay timers for enabling bursting, only if
- * the value was not set by the user via module options
- */
- if (adapter->rx_int_delay == DEFAULT_RDTR)
- adapter->rx_int_delay = BURST_RDTR;
- if (adapter->rx_abs_int_delay == DEFAULT_RADV)
- adapter->rx_abs_int_delay = BURST_RADV;
- }
-
- /* 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) && (adapter->itr != 0))
- ew32(ITR, 1000000000 / (adapter->itr * 256));
-
- ctrl_ext = er32(CTRL_EXT);
- /* 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_BIT_MASK(32)));
- 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->hw.mac.type == e1000_pch2lan)) {
- if (adapter->netdev->mtu > ETH_DATA_LEN) {
- u32 rxdctl = er32(RXDCTL(0));
- ew32(RXDCTL(0), rxdctl | 0x3);
- if (adapter->flags & FLAG_HAS_ERT)
- ew32(ERT, E1000_ERT_2048 | (1 << 13));
- /*
- * With jumbo frames and early-receive enabled,
- * excessive C-state transition latencies result in
- * dropped transactions.
- */
- pm_qos_update_request(&adapter->netdev->pm_qos_req, 55);
- } else {
- pm_qos_update_request(&adapter->netdev->pm_qos_req,
- PM_QOS_DEFAULT_VALUE);
- }
- }
-
- /* Enable Receives */
- ew32(RCTL, rctl);
-}
-
-/**
- * e1000_update_mc_addr_list - 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
- *
- * Updates the Multicast Table Array.
- * The caller must have a packed mc_addr_list of multicast addresses.
- **/
-static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list,
- u32 mc_addr_count)
-{
- hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_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 netdev_hw_addr *ha;
- u8 *mta_list;
- u32 rctl;
-
- /* Check for Promiscuous and All Multicast modes */
-
- rctl = er32(RCTL);
-
- if (netdev->flags & IFF_PROMISC) {
- rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE);
- rctl &= ~E1000_RCTL_VFE;
- /* Do not hardware filter VLANs in promisc mode */
- e1000e_vlan_filter_disable(adapter);
- } else {
- if (netdev->flags & IFF_ALLMULTI) {
- rctl |= E1000_RCTL_MPE;
- rctl &= ~E1000_RCTL_UPE;
- } else {
- rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE);
- }
- e1000e_vlan_filter_enable(adapter);
- }
-
- ew32(RCTL, rctl);
-
- if (!netdev_mc_empty(netdev)) {
- int i = 0;
-
- mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC);
- if (!mta_list)
- return;
-
- /* prepare a packed array of only addresses. */
- netdev_for_each_mc_addr(ha, netdev)
- memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN);
-
- e1000_update_mc_addr_list(hw, mta_list, i);
- kfree(mta_list);
- } else {
- /*
- * if we're called from probe, we might not have
- * anything to do here, so clear out the list
- */
- e1000_update_mc_addr_list(hw, NULL, 0);
- }
-
- if (netdev->features & NETIF_F_HW_VLAN_RX)
- e1000e_vlan_strip_enable(adapter);
- else
- e1000e_vlan_strip_disable(adapter);
-}
-
-/**
- * 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_pt(adapter);
-
- e1000_configure_tx(adapter);
- e1000_setup_rctl(adapter);
- e1000_configure_rx(adapter);
- adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring),
- GFP_KERNEL);
-}
-
-/**
- * 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)
-{
- if (adapter->hw.phy.ops.power_up)
- adapter->hw.phy.ops.power_up(&adapter->hw);
-
- 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 if management or WoL is active.
- */
-static void e1000_power_down_phy(struct e1000_adapter *adapter)
-{
- /* WoL is enabled */
- if (adapter->wol)
- return;
-
- if (adapter->hw.phy.ops.power_down)
- adapter->hw.phy.ops.power_down(&adapter->hw);
-}
-
-/**
- * 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_fc_info *fc = &adapter->hw.fc;
- struct e1000_hw *hw = &adapter->hw;
- u32 tx_space, min_tx_space, min_rx_space;
- u32 pba = adapter->pba;
- u16 hwm;
-
- /* reset Packet Buffer Allocation to default */
- ew32(PBA, pba);
-
- if (adapter->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.
- */
- pba = er32(PBA);
- /* upper 16 bits has Tx packet buffer allocation size in KB */
- tx_space = pba >> 16;
- /* lower 16 bits has Rx packet buffer allocation size in KB */
- 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 = (adapter->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 = adapter->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) < pba)) {
- 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 ((pba < min_rx_space) &&
- (!(adapter->flags & FLAG_HAS_ERT)))
- /* ERT enabled in e1000_configure_rx */
- pba = min_rx_space;
- }
-
- ew32(PBA, 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_DISABLE_FC_PAUSE_TIME)
- fc->pause_time = 0xFFFF;
- else
- fc->pause_time = E1000_FC_PAUSE_TIME;
- fc->send_xon = 1;
- fc->current_mode = fc->requested_mode;
-
- switch (hw->mac.type) {
- default:
- if ((adapter->flags & FLAG_HAS_ERT) &&
- (adapter->netdev->mtu > ETH_DATA_LEN))
- hwm = min(((pba << 10) * 9 / 10),
- ((pba << 10) - (E1000_ERT_2048 << 3)));
- else
- hwm = min(((pba << 10) * 9 / 10),
- ((pba << 10) - adapter->max_frame_size));
-
- fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */
- fc->low_water = fc->high_water - 8;
- break;
- case e1000_pchlan:
- /*
- * Workaround PCH LOM adapter hangs with certain network
- * loads. If hangs persist, try disabling Tx flow control.
- */
- if (adapter->netdev->mtu > ETH_DATA_LEN) {
- fc->high_water = 0x3500;
- fc->low_water = 0x1500;
- } else {
- fc->high_water = 0x5000;
- fc->low_water = 0x3000;
- }
- fc->refresh_time = 0x1000;
- break;
- case e1000_pch2lan:
- fc->high_water = 0x05C20;
- fc->low_water = 0x05048;
- fc->pause_time = 0x0650;
- fc->refresh_time = 0x0400;
- if (adapter->netdev->mtu > ETH_DATA_LEN) {
- pba = 14;
- ew32(PBA, pba);
- }
- break;
- }
-
- /*
- * Disable Adaptive Interrupt Moderation if 2 full packets cannot
- * fit in receive buffer and early-receive not supported.
- */
- if (adapter->itr_setting & 0x3) {
- if (((adapter->max_frame_size * 2) > (pba << 10)) &&
- !(adapter->flags & FLAG_HAS_ERT)) {
- if (!(adapter->flags2 & FLAG2_DISABLE_AIM)) {
- dev_info(&adapter->pdev->dev,
- "Interrupt Throttle Rate turned off\n");
- adapter->flags2 |= FLAG2_DISABLE_AIM;
- ew32(ITR, 0);
- }
- } else if (adapter->flags2 & FLAG2_DISABLE_AIM) {
- dev_info(&adapter->pdev->dev,
- "Interrupt Throttle Rate turned on\n");
- adapter->flags2 &= ~FLAG2_DISABLE_AIM;
- adapter->itr = 20000;
- ew32(ITR, 1000000000 / (adapter->itr * 256));
- }
- }
-
- /* Allow time for pending master requests to run */
- mac->ops.reset_hw(hw);
-
- /*
- * For parts with AMT enabled, let the firmware know
- * that the network interface is in control
- */
- if (adapter->flags & FLAG_HAS_AMT)
- e1000e_get_hw_control(adapter);
-
- ew32(WUC, 0);
-
- if (mac->ops.init_hw(hw))
- e_err("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);
-
- if (!netif_running(adapter->netdev) &&
- !test_bit(__E1000_TESTING, &adapter->state)) {
- e1000_power_down_phy(adapter);
- return;
- }
-
- e1000_get_phy_info(hw);
-
- if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) &&
- !(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);
- }
-}
-
-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);
- if (adapter->msix_entries)
- e1000_configure_msix(adapter);
- e1000_irq_enable(adapter);
-
- netif_start_queue(adapter->netdev);
-
- /* fire a link change interrupt to start the watchdog */
- if (adapter->msix_entries)
- ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
- else
- ew32(ICS, E1000_ICS_LSC);
-
- return 0;
-}
-
-static void e1000e_flush_descriptors(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- if (!(adapter->flags2 & FLAG2_DMA_BURST))
- return;
-
- /* flush pending descriptor writebacks to memory */
- ew32(TIDV, adapter->tx_int_delay | E1000_TIDV_FPD);
- ew32(RDTR, adapter->rx_int_delay | E1000_RDTR_FPD);
-
- /* execute the writes immediately */
- e1e_flush();
-}
-
-static void e1000e_update_stats(struct e1000_adapter *adapter);
-
-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();
- usleep_range(10000, 20000);
-
- napi_disable(&adapter->napi);
- e1000_irq_disable(adapter);
-
- del_timer_sync(&adapter->watchdog_timer);
- del_timer_sync(&adapter->phy_info_timer);
-
- netif_carrier_off(netdev);
-
- spin_lock(&adapter->stats64_lock);
- e1000e_update_stats(adapter);
- spin_unlock(&adapter->stats64_lock);
-
- e1000e_flush_descriptors(adapter);
- e1000_clean_tx_ring(adapter);
- e1000_clean_rx_ring(adapter);
-
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
-
- if (!pci_channel_offline(adapter->pdev))
- e1000e_reset(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))
- usleep_range(1000, 2000);
- 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 net_device *netdev = adapter->netdev;
-
- adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN;
- adapter->rx_ps_bsize0 = 128;
- adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN;
- adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN;
-
- spin_lock_init(&adapter->stats64_lock);
-
- e1000e_set_interrupt_capability(adapter);
-
- if (e1000_alloc_queues(adapter))
- return -ENOMEM;
-
- /* Explicitly disable IRQ since the NIC can be in any state. */
- e1000_irq_disable(adapter);
-
- set_bit(__E1000_DOWN, &adapter->state);
- return 0;
-}
-
-/**
- * e1000_intr_msi_test - Interrupt Handler
- * @irq: interrupt number
- * @data: pointer to a network interface device structure
- **/
-static irqreturn_t e1000_intr_msi_test(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);
-
- e_dbg("icr is %08X\n", icr);
- if (icr & E1000_ICR_RXSEQ) {
- adapter->flags &= ~FLAG_MSI_TEST_FAILED;
- wmb();
- }
-
- return IRQ_HANDLED;
-}
-
-/**
- * e1000_test_msi_interrupt - Returns 0 for successful test
- * @adapter: board private struct
- *
- * code flow taken from tg3.c
- **/
-static int e1000_test_msi_interrupt(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct e1000_hw *hw = &adapter->hw;
- int err;
-
- /* poll_enable hasn't been called yet, so don't need disable */
- /* clear any pending events */
- er32(ICR);
-
- /* free the real vector and request a test handler */
- e1000_free_irq(adapter);
- e1000e_reset_interrupt_capability(adapter);
-
- /* Assume that the test fails, if it succeeds then the test
- * MSI irq handler will unset this flag */
- adapter->flags |= FLAG_MSI_TEST_FAILED;
-
- err = pci_enable_msi(adapter->pdev);
- if (err)
- goto msi_test_failed;
-
- err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0,
- netdev->name, netdev);
- if (err) {
- pci_disable_msi(adapter->pdev);
- goto msi_test_failed;
- }
-
- wmb();
-
- e1000_irq_enable(adapter);
-
- /* fire an unusual interrupt on the test handler */
- ew32(ICS, E1000_ICS_RXSEQ);
- e1e_flush();
- msleep(50);
-
- e1000_irq_disable(adapter);
-
- rmb();
-
- if (adapter->flags & FLAG_MSI_TEST_FAILED) {
- adapter->int_mode = E1000E_INT_MODE_LEGACY;
- e_info("MSI interrupt test failed, using legacy interrupt.\n");
- } else
- e_dbg("MSI interrupt test succeeded!\n");
-
- free_irq(adapter->pdev->irq, netdev);
- pci_disable_msi(adapter->pdev);
-
-msi_test_failed:
- e1000e_set_interrupt_capability(adapter);
- return e1000_request_irq(adapter);
-}
-
-/**
- * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored
- * @adapter: board private struct
- *
- * code flow taken from tg3.c, called with e1000 interrupts disabled.
- **/
-static int e1000_test_msi(struct e1000_adapter *adapter)
-{
- int err;
- u16 pci_cmd;
-
- if (!(adapter->flags & FLAG_MSI_ENABLED))
- return 0;
-
- /* disable SERR in case the MSI write causes a master abort */
- pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
- if (pci_cmd & PCI_COMMAND_SERR)
- pci_write_config_word(adapter->pdev, PCI_COMMAND,
- pci_cmd & ~PCI_COMMAND_SERR);
-
- err = e1000_test_msi_interrupt(adapter);
-
- /* re-enable SERR */
- if (pci_cmd & PCI_COMMAND_SERR) {
- pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd);
- pci_cmd |= PCI_COMMAND_SERR;
- pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd);
- }
-
- return err;
-}
-
-/**
- * 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;
- struct pci_dev *pdev = adapter->pdev;
- int err;
-
- /* disallow open during test */
- if (test_bit(__E1000_TESTING, &adapter->state))
- return -EBUSY;
-
- pm_runtime_get_sync(&pdev->dev);
-
- netif_carrier_off(netdev);
-
- /* 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;
-
- /*
- * If AMT is enabled, let the firmware know that the network
- * interface is now open and reset the part to a known state.
- */
- if (adapter->flags & FLAG_HAS_AMT) {
- e1000e_get_hw_control(adapter);
- e1000e_reset(adapter);
- }
-
- 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);
-
- /* DMA latency requirement to workaround early-receive/jumbo issue */
- if ((adapter->flags & FLAG_HAS_ERT) ||
- (adapter->hw.mac.type == e1000_pch2lan))
- pm_qos_add_request(&adapter->netdev->pm_qos_req,
- PM_QOS_CPU_DMA_LATENCY,
- PM_QOS_DEFAULT_VALUE);
-
- /*
- * 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;
-
- /*
- * Work around PCIe errata with MSI interrupts causing some chipsets to
- * ignore e1000e MSI messages, which means we need to test our MSI
- * interrupt now
- */
- if (adapter->int_mode != E1000E_INT_MODE_LEGACY) {
- err = e1000_test_msi(adapter);
- if (err) {
- e_err("Interrupt allocation failed\n");
- 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);
-
- netif_start_queue(netdev);
-
- adapter->idle_check = true;
- pm_runtime_put(&pdev->dev);
-
- /* fire a link status change interrupt to start the watchdog */
- if (adapter->msix_entries)
- ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER);
- else
- ew32(ICS, E1000_ICS_LSC);
-
- return 0;
-
-err_req_irq:
- e1000e_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);
- pm_runtime_put_sync(&pdev->dev);
-
- 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);
- struct pci_dev *pdev = adapter->pdev;
-
- WARN_ON(test_bit(__E1000_RESETTING, &adapter->state));
-
- pm_runtime_get_sync(&pdev->dev);
-
- if (!test_bit(__E1000_DOWN, &adapter->state)) {
- e1000e_down(adapter);
- e1000_free_irq(adapter);
- }
- e1000_power_down_phy(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)
- 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) &&
- !test_bit(__E1000_TESTING, &adapter->state))
- e1000e_release_hw_control(adapter);
-
- if ((adapter->flags & FLAG_HAS_ERT) ||
- (adapter->hw.mac.type == e1000_pch2lan))
- pm_qos_remove_request(&adapter->netdev->pm_qos_req);
-
- pm_runtime_put_sync(&pdev->dev);
-
- 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;
-}
-
-/**
- * e1000e_update_phy_task - work thread to update phy
- * @work: pointer to our work struct
- *
- * this worker thread exists because we must acquire a
- * semaphore to read the phy, which we could msleep while
- * waiting for it, and we can't msleep in a timer.
- **/
-static void e1000e_update_phy_task(struct work_struct *work)
-{
- struct e1000_adapter *adapter = container_of(work,
- struct e1000_adapter, update_phy_task);
-
- if (test_bit(__E1000_DOWN, &adapter->state))
- return;
-
- e1000_get_phy_info(&adapter->hw);
-}
-
-/*
- * 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;
-
- if (test_bit(__E1000_DOWN, &adapter->state))
- return;
-
- schedule_work(&adapter->update_phy_task);
-}
-
-/**
- * e1000e_update_phy_stats - Update the PHY statistics counters
- * @adapter: board private structure
- *
- * Read/clear the upper 16-bit PHY registers and read/accumulate lower
- **/
-static void e1000e_update_phy_stats(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- s32 ret_val;
- u16 phy_data;
-
- ret_val = hw->phy.ops.acquire(hw);
- if (ret_val)
- return;
-
- /*
- * A page set is expensive so check if already on desired page.
- * If not, set to the page with the PHY status registers.
- */
- hw->phy.addr = 1;
- ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT,
- &phy_data);
- if (ret_val)
- goto release;
- if (phy_data != (HV_STATS_PAGE << IGP_PAGE_SHIFT)) {
- ret_val = hw->phy.ops.set_page(hw,
- HV_STATS_PAGE << IGP_PAGE_SHIFT);
- if (ret_val)
- goto release;
- }
-
- /* Single Collision Count */
- hw->phy.ops.read_reg_page(hw, HV_SCC_UPPER, &phy_data);
- ret_val = hw->phy.ops.read_reg_page(hw, HV_SCC_LOWER, &phy_data);
- if (!ret_val)
- adapter->stats.scc += phy_data;
-
- /* Excessive Collision Count */
- hw->phy.ops.read_reg_page(hw, HV_ECOL_UPPER, &phy_data);
- ret_val = hw->phy.ops.read_reg_page(hw, HV_ECOL_LOWER, &phy_data);
- if (!ret_val)
- adapter->stats.ecol += phy_data;
-
- /* Multiple Collision Count */
- hw->phy.ops.read_reg_page(hw, HV_MCC_UPPER, &phy_data);
- ret_val = hw->phy.ops.read_reg_page(hw, HV_MCC_LOWER, &phy_data);
- if (!ret_val)
- adapter->stats.mcc += phy_data;
-
- /* Late Collision Count */
- hw->phy.ops.read_reg_page(hw, HV_LATECOL_UPPER, &phy_data);
- ret_val = hw->phy.ops.read_reg_page(hw, HV_LATECOL_LOWER, &phy_data);
- if (!ret_val)
- adapter->stats.latecol += phy_data;
-
- /* Collision Count - also used for adaptive IFS */
- hw->phy.ops.read_reg_page(hw, HV_COLC_UPPER, &phy_data);
- ret_val = hw->phy.ops.read_reg_page(hw, HV_COLC_LOWER, &phy_data);
- if (!ret_val)
- hw->mac.collision_delta = phy_data;
-
- /* Defer Count */
- hw->phy.ops.read_reg_page(hw, HV_DC_UPPER, &phy_data);
- ret_val = hw->phy.ops.read_reg_page(hw, HV_DC_LOWER, &phy_data);
- if (!ret_val)
- adapter->stats.dc += phy_data;
-
- /* Transmit with no CRS */
- hw->phy.ops.read_reg_page(hw, HV_TNCRS_UPPER, &phy_data);
- ret_val = hw->phy.ops.read_reg_page(hw, HV_TNCRS_LOWER, &phy_data);
- if (!ret_val)
- adapter->stats.tncrs += phy_data;
-
-release:
- hw->phy.ops.release(hw);
-}
-
-/**
- * e1000e_update_stats - Update the board statistics counters
- * @adapter: board private structure
- **/
-static void e1000e_update_stats(struct e1000_adapter *adapter)
-{
- struct net_device *netdev = adapter->netdev;
- struct e1000_hw *hw = &adapter->hw;
- struct pci_dev *pdev = adapter->pdev;
-
- /*
- * 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;
-
- adapter->stats.crcerrs += er32(CRCERRS);
- adapter->stats.gprc += er32(GPRC);
- adapter->stats.gorc += er32(GORCL);
- er32(GORCH); /* Clear gorc */
- adapter->stats.bprc += er32(BPRC);
- adapter->stats.mprc += er32(MPRC);
- adapter->stats.roc += er32(ROC);
-
- adapter->stats.mpc += er32(MPC);
-
- /* Half-duplex statistics */
- if (adapter->link_duplex == HALF_DUPLEX) {
- if (adapter->flags2 & FLAG2_HAS_PHY_STATS) {
- e1000e_update_phy_stats(adapter);
- } else {
- 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);
-
- hw->mac.collision_delta = er32(COLC);
-
- if ((hw->mac.type != e1000_82574) &&
- (hw->mac.type != e1000_82583))
- adapter->stats.tncrs += er32(TNCRS);
- }
- adapter->stats.colc += hw->mac.collision_delta;
- }
-
- adapter->stats.xonrxc += er32(XONRXC);
- adapter->stats.xontxc += er32(XONTXC);
- adapter->stats.xoffrxc += er32(XOFFRXC);
- adapter->stats.xofftxc += er32(XOFFTXC);
- adapter->stats.gptc += er32(GPTC);
- adapter->stats.gotc += er32(GOTCL);
- er32(GOTCH); /* Clear gotc */
- adapter->stats.rnbc += er32(RNBC);
- adapter->stats.ruc += er32(RUC);
-
- 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;
-
- adapter->stats.algnerrc += er32(ALGNERRC);
- adapter->stats.rxerrc += er32(RXERRC);
- adapter->stats.cexterr += er32(CEXTERR);
- adapter->stats.tsctc += er32(TSCTC);
- adapter->stats.tsctfc += er32(TSCTFC);
-
- /* Fill out the OS statistics structure */
- netdev->stats.multicast = adapter->stats.mprc;
- netdev->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
- */
- netdev->stats.rx_errors = adapter->stats.rxerrc +
- adapter->stats.crcerrs + adapter->stats.algnerrc +
- adapter->stats.ruc + adapter->stats.roc +
- adapter->stats.cexterr;
- netdev->stats.rx_length_errors = adapter->stats.ruc +
- adapter->stats.roc;
- netdev->stats.rx_crc_errors = adapter->stats.crcerrs;
- netdev->stats.rx_frame_errors = adapter->stats.algnerrc;
- netdev->stats.rx_missed_errors = adapter->stats.mpc;
-
- /* Tx Errors */
- netdev->stats.tx_errors = adapter->stats.ecol +
- adapter->stats.latecol;
- netdev->stats.tx_aborted_errors = adapter->stats.ecol;
- netdev->stats.tx_window_errors = adapter->stats.latecol;
- netdev->stats.tx_carrier_errors = adapter->stats.tncrs;
-
- /* Tx Dropped needs to be maintained elsewhere */
-
- /* Management Stats */
- adapter->stats.mgptc += er32(MGTPTC);
- adapter->stats.mgprc += er32(MGTPRC);
- adapter->stats.mgpdc += er32(MGTPDC);
-}
-
-/**
- * e1000_phy_read_status - Update the PHY register status snapshot
- * @adapter: board private structure
- **/
-static void e1000_phy_read_status(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- struct e1000_phy_regs *phy = &adapter->phy_regs;
-
- if ((er32(STATUS) & E1000_STATUS_LU) &&
- (adapter->hw.phy.media_type == e1000_media_type_copper)) {
- int ret_val;
-
- ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr);
- ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr);
- ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise);
- ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa);
- ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion);
- ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000);
- ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000);
- ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus);
- if (ret_val)
- e_warn("Error reading PHY register\n");
- } else {
- /*
- * Do not read PHY registers if link is not up
- * Set values to typical power-on defaults
- */
- phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX);
- phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL |
- BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE |
- BMSR_ERCAP);
- phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP |
- ADVERTISE_ALL | ADVERTISE_CSMA);
- phy->lpa = 0;
- phy->expansion = EXPANSION_ENABLENPAGE;
- phy->ctrl1000 = ADVERTISE_1000FULL;
- phy->stat1000 = 0;
- phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF);
- }
-}
-
-static void e1000_print_link_info(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 ctrl = er32(CTRL);
-
- /* Link status message must follow this format for user tools */
- printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, "
- "Flow Control: %s\n",
- adapter->netdev->name,
- 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")));
-}
-
-static bool e1000e_has_link(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- bool link_active = 0;
- s32 ret_val = 0;
-
- /*
- * get_link_status is set on LSC (link status) interrupt or
- * Rx sequence error interrupt. get_link_status will stay
- * false until the check_for_link establishes link
- * for copper adapters ONLY
- */
- switch (hw->phy.media_type) {
- case e1000_media_type_copper:
- if (hw->mac.get_link_status) {
- ret_val = hw->mac.ops.check_for_link(hw);
- link_active = !hw->mac.get_link_status;
- } else {
- link_active = 1;
- }
- break;
- case e1000_media_type_fiber:
- ret_val = hw->mac.ops.check_for_link(hw);
- link_active = !!(er32(STATUS) & E1000_STATUS_LU);
- break;
- case e1000_media_type_internal_serdes:
- ret_val = hw->mac.ops.check_for_link(hw);
- link_active = adapter->hw.mac.serdes_has_link;
- break;
- default:
- case e1000_media_type_unknown:
- break;
- }
-
- if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) &&
- (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) {
- /* See e1000_kmrn_lock_loss_workaround_ich8lan() */
- e_info("Gigabit has been disabled, downgrading speed\n");
- }
-
- return link_active;
-}
-
-static void e1000e_enable_receives(struct e1000_adapter *adapter)
-{
- /* make sure the receive unit is started */
- if ((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
- (adapter->flags & FLAG_RX_RESTART_NOW)) {
- struct e1000_hw *hw = &adapter->hw;
- u32 rctl = er32(RCTL);
- ew32(RCTL, rctl | E1000_RCTL_EN);
- adapter->flags &= ~FLAG_RX_RESTART_NOW;
- }
-}
-
-static void e1000e_check_82574_phy_workaround(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
-
- /*
- * With 82574 controllers, PHY needs to be checked periodically
- * for hung state and reset, if two calls return true
- */
- if (e1000_check_phy_82574(hw))
- adapter->phy_hang_count++;
- else
- adapter->phy_hang_count = 0;
-
- if (adapter->phy_hang_count > 1) {
- adapter->phy_hang_count = 0;
- schedule_work(&adapter->reset_task);
- }
-}
-
-/**
- * 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_phy_info *phy = &adapter->hw.phy;
- struct e1000_ring *tx_ring = adapter->tx_ring;
- struct e1000_hw *hw = &adapter->hw;
- u32 link, tctl;
-
- if (test_bit(__E1000_DOWN, &adapter->state))
- return;
-
- link = e1000e_has_link(adapter);
- if ((netif_carrier_ok(netdev)) && link) {
- /* Cancel scheduled suspend requests. */
- pm_runtime_resume(netdev->dev.parent);
-
- e1000e_enable_receives(adapter);
- goto link_up;
- }
-
- if ((e1000e_enable_tx_pkt_filtering(hw)) &&
- (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id))
- e1000_update_mng_vlan(adapter);
-
- if (link) {
- if (!netif_carrier_ok(netdev)) {
- bool txb2b = 1;
-
- /* Cancel scheduled suspend requests. */
- pm_runtime_resume(netdev->dev.parent);
-
- /* update snapshot of PHY registers on LSC */
- e1000_phy_read_status(adapter);
- mac->ops.get_link_up_info(&adapter->hw,
- &adapter->link_speed,
- &adapter->link_duplex);
- e1000_print_link_info(adapter);
- /*
- * On supported PHYs, check for duplex mismatch only
- * if link has autonegotiated at 10/100 half
- */
- if ((hw->phy.type == e1000_phy_igp_3 ||
- hw->phy.type == e1000_phy_bm) &&
- (hw->mac.autoneg == true) &&
- (adapter->link_speed == SPEED_10 ||
- adapter->link_speed == SPEED_100) &&
- (adapter->link_duplex == HALF_DUPLEX)) {
- u16 autoneg_exp;
-
- e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp);
-
- if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS))
- e_info("Autonegotiated half duplex but"
- " link partner cannot autoneg. "
- " Try forcing full duplex if "
- "link gets many collisions.\n");
- }
-
- /* adjust timeout factor according to speed/duplex */
- adapter->tx_timeout_factor = 1;
- switch (adapter->link_speed) {
- case SPEED_10:
- txb2b = 0;
- adapter->tx_timeout_factor = 16;
- break;
- case SPEED_100:
- txb2b = 0;
- adapter->tx_timeout_factor = 10;
- break;
- }
-
- /*
- * workaround: re-program speed mode bit after
- * link-up event
- */
- if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) &&
- !txb2b) {
- u32 tarc0;
- tarc0 = er32(TARC(0));
- tarc0 &= ~SPEED_MODE_BIT;
- ew32(TARC(0), 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:
- e_info("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 TARC(0)
- */
- tctl = er32(TCTL);
- tctl |= E1000_TCTL_EN;
- ew32(TCTL, tctl);
-
- /*
- * Perform any post-link-up configuration before
- * reporting link up.
- */
- if (phy->ops.cfg_on_link_up)
- phy->ops.cfg_on_link_up(hw);
-
- netif_carrier_on(netdev);
-
- if (!test_bit(__E1000_DOWN, &adapter->state))
- mod_timer(&adapter->phy_info_timer,
- round_jiffies(jiffies + 2 * HZ));
- }
- } else {
- if (netif_carrier_ok(netdev)) {
- adapter->link_speed = 0;
- adapter->link_duplex = 0;
- /* Link status message must follow this format */
- printk(KERN_INFO "e1000e: %s NIC Link is Down\n",
- adapter->netdev->name);
- netif_carrier_off(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);
- else
- pm_schedule_suspend(netdev->dev.parent,
- LINK_TIMEOUT);
- }
- }
-
-link_up:
- spin_lock(&adapter->stats64_lock);
- 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->gorc = adapter->stats.gorc - adapter->gorc_old;
- adapter->gorc_old = adapter->stats.gorc;
- adapter->gotc = adapter->stats.gotc - adapter->gotc_old;
- adapter->gotc_old = adapter->stats.gotc;
- spin_unlock(&adapter->stats64_lock);
-
- e1000e_update_adaptive(&adapter->hw);
-
- if (!netif_carrier_ok(netdev) &&
- (e1000_desc_unused(tx_ring) + 1 < tx_ring->count)) {
- /*
- * 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).
- */
- schedule_work(&adapter->reset_task);
- /* return immediately since reset is imminent */
- return;
- }
-
- /* Simple mode for Interrupt Throttle Rate (ITR) */
- if (adapter->itr_setting == 4) {
- /*
- * Symmetric Tx/Rx gets a reduced ITR=2000;
- * Total asymmetrical Tx or Rx gets ITR=8000;
- * everyone else is between 2000-8000.
- */
- u32 goc = (adapter->gotc + adapter->gorc) / 10000;
- u32 dif = (adapter->gotc > adapter->gorc ?
- adapter->gotc - adapter->gorc :
- adapter->gorc - adapter->gotc) / 10000;
- u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000;
-
- ew32(ITR, 1000000000 / (itr * 256));
- }
-
- /* Cause software interrupt to ensure Rx ring is cleaned */
- if (adapter->msix_entries)
- ew32(ICS, adapter->rx_ring->ims_val);
- else
- ew32(ICS, E1000_ICS_RXDMT0);
-
- /* flush pending descriptors to memory before detecting Tx hang */
- e1000e_flush_descriptors(adapter);
-
- /* 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);
-
- if (adapter->flags2 & FLAG2_CHECK_PHY_HANG)
- e1000e_check_82574_phy_workaround(adapter);
-
- /* 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;
-
- if (!skb_is_gso(skb))
- return 0;
-
- if (skb_header_cloned(skb)) {
- int 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_is_gso_v6(skb)) {
- 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;
-}
-
-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;
- u32 cmd_len = E1000_TXD_CMD_DEXT;
- __be16 protocol;
-
- if (skb->ip_summed != CHECKSUM_PARTIAL)
- return 0;
-
- if (skb->protocol == cpu_to_be16(ETH_P_8021Q))
- protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto;
- else
- protocol = skb->protocol;
-
- switch (protocol) {
- case cpu_to_be16(ETH_P_IP):
- if (ip_hdr(skb)->protocol == IPPROTO_TCP)
- cmd_len |= E1000_TXD_CMD_TCP;
- break;
- case cpu_to_be16(ETH_P_IPV6):
- /* XXX not handling all IPV6 headers */
- if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP)
- cmd_len |= E1000_TXD_CMD_TCP;
- break;
- default:
- if (unlikely(net_ratelimit()))
- e_warn("checksum_partial proto=%x!\n",
- be16_to_cpu(protocol));
- break;
- }
-
- css = skb_checksum_start_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(cmd_len);
-
- 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;
-}
-
-#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 pci_dev *pdev = adapter->pdev;
- struct e1000_buffer *buffer_info;
- unsigned int len = skb_headlen(skb);
- unsigned int offset = 0, size, count = 0, i;
- unsigned int f, bytecount, segs;
-
- i = tx_ring->next_to_use;
-
- while (len) {
- buffer_info = &tx_ring->buffer_info[i];
- size = min(len, max_per_txd);
-
- buffer_info->length = size;
- buffer_info->time_stamp = jiffies;
- buffer_info->next_to_watch = i;
- buffer_info->dma = dma_map_single(&pdev->dev,
- skb->data + offset,
- size, DMA_TO_DEVICE);
- buffer_info->mapped_as_page = false;
- if (dma_mapping_error(&pdev->dev, buffer_info->dma))
- goto dma_error;
-
- len -= size;
- offset += size;
- count++;
-
- if (len) {
- 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) {
- i++;
- if (i == tx_ring->count)
- i = 0;
-
- buffer_info = &tx_ring->buffer_info[i];
- size = min(len, max_per_txd);
-
- buffer_info->length = size;
- buffer_info->time_stamp = jiffies;
- buffer_info->next_to_watch = i;
- buffer_info->dma = dma_map_page(&pdev->dev, frag->page,
- offset, size,
- DMA_TO_DEVICE);
- buffer_info->mapped_as_page = true;
- if (dma_mapping_error(&pdev->dev, buffer_info->dma))
- goto dma_error;
-
- len -= size;
- offset += size;
- count++;
- }
- }
-
- segs = skb_shinfo(skb)->gso_segs ? : 1;
- /* multiply data chunks by size of headers */
- bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len;
-
- tx_ring->buffer_info[i].skb = skb;
- tx_ring->buffer_info[i].segs = segs;
- tx_ring->buffer_info[i].bytecount = bytecount;
- tx_ring->buffer_info[first].next_to_watch = i;
-
- return count;
-
-dma_error:
- dev_err(&pdev->dev, "Tx DMA map failed\n");
- buffer_info->dma = 0;
- if (count)
- count--;
-
- while (count--) {
- if (i == 0)
- i += tx_ring->count;
- i--;
- buffer_info = &tx_ring->buffer_info[i];
- e1000_put_txbuf(adapter, buffer_info);
- }
-
- return 0;
-}
-
-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;
-
- do {
- 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;
- } while (--count > 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 netdev_tx_t 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_headlen(skb);
- 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);
- /*
- * we do this workaround for ES2LAN, but it is un-necessary,
- * avoiding it could save a lot of cycles
- */
- 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)) {
- e_err("__pskb_pull_tail failed.\n");
- dev_kfree_skb_any(skb);
- return NETDEV_TX_OK;
- }
- len = skb_headlen(skb);
- }
- }
-
- /* 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);
-
- /*
- * need: count + 2 desc gap to keep tail from touching
- * head, otherwise try next time
- */
- if (e1000_maybe_stop_tx(netdev, count + 2))
- return NETDEV_TX_BUSY;
-
- if (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);
- 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;
-
- /* if count is 0 then mapping error has occurred */
- count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss);
- if (count) {
- e1000_tx_queue(adapter, tx_flags, count);
- /* Make sure there is space in the ring for the next send. */
- e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2);
-
- } else {
- dev_kfree_skb_any(skb);
- tx_ring->buffer_info[first].time_stamp = 0;
- tx_ring->next_to_use = first;
- }
-
- 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);
-
- /* don't run the task if already down */
- if (test_bit(__E1000_DOWN, &adapter->state))
- return;
-
- if (!((adapter->flags & FLAG_RX_NEEDS_RESTART) &&
- (adapter->flags & FLAG_RX_RESTART_NOW))) {
- e1000e_dump(adapter);
- e_err("Reset adapter\n");
- }
- e1000e_reinit_locked(adapter);
-}
-
-/**
- * e1000_get_stats64 - Get System Network Statistics
- * @netdev: network interface device structure
- * @stats: rtnl_link_stats64 pointer
- *
- * Returns the address of the device statistics structure.
- **/
-struct rtnl_link_stats64 *e1000e_get_stats64(struct net_device *netdev,
- struct rtnl_link_stats64 *stats)
-{
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- memset(stats, 0, sizeof(struct rtnl_link_stats64));
- spin_lock(&adapter->stats64_lock);
- e1000e_update_stats(adapter);
- /* Fill out the OS statistics structure */
- stats->rx_bytes = adapter->stats.gorc;
- stats->rx_packets = adapter->stats.gprc;
- stats->tx_bytes = adapter->stats.gotc;
- stats->tx_packets = adapter->stats.gptc;
- stats->multicast = adapter->stats.mprc;
- 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
- */
- stats->rx_errors = adapter->stats.rxerrc +
- adapter->stats.crcerrs + adapter->stats.algnerrc +
- adapter->stats.ruc + adapter->stats.roc +
- adapter->stats.cexterr;
- stats->rx_length_errors = adapter->stats.ruc +
- adapter->stats.roc;
- stats->rx_crc_errors = adapter->stats.crcerrs;
- stats->rx_frame_errors = adapter->stats.algnerrc;
- stats->rx_missed_errors = adapter->stats.mpc;
-
- /* Tx Errors */
- stats->tx_errors = adapter->stats.ecol +
- adapter->stats.latecol;
- stats->tx_aborted_errors = adapter->stats.ecol;
- stats->tx_window_errors = adapter->stats.latecol;
- stats->tx_carrier_errors = adapter->stats.tncrs;
-
- /* Tx Dropped needs to be maintained elsewhere */
-
- spin_unlock(&adapter->stats64_lock);
- return 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;
-
- /* Jumbo frame support */
- if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) &&
- !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) {
- e_err("Jumbo Frames not supported.\n");
- return -EINVAL;
- }
-
- /* Supported frame sizes */
- if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) ||
- (max_frame > adapter->max_hw_frame_size)) {
- e_err("Unsupported MTU setting\n");
- return -EINVAL;
- }
-
- /* Jumbo frame workaround on 82579 requires CRC be stripped */
- if ((adapter->hw.mac.type == e1000_pch2lan) &&
- !(adapter->flags2 & FLAG2_CRC_STRIPPING) &&
- (new_mtu > ETH_DATA_LEN)) {
- e_err("Jumbo Frames not supported on 82579 when CRC "
- "stripping is disabled.\n");
- return -EINVAL;
- }
-
- /* 82573 Errata 17 */
- if (((adapter->hw.mac.type == e1000_82573) ||
- (adapter->hw.mac.type == e1000_82574)) &&
- (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) {
- adapter->flags2 |= FLAG2_DISABLE_ASPM_L1;
- e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1);
- }
-
- while (test_and_set_bit(__E1000_RESETTING, &adapter->state))
- usleep_range(1000, 2000);
- /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */
- adapter->max_frame_size = max_frame;
- e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu);
- netdev->mtu = new_mtu;
- 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_rx* routines, jumbo receives will use
- * fragmented skbs
- */
-
- 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;
-
- 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);
-
- if (adapter->hw.phy.media_type != e1000_media_type_copper)
- return -EOPNOTSUPP;
-
- switch (cmd) {
- case SIOCGMIIPHY:
- data->phy_id = adapter->hw.phy.addr;
- break;
- case SIOCGMIIREG:
- e1000_phy_read_status(adapter);
-
- switch (data->reg_num & 0x1F) {
- case MII_BMCR:
- data->val_out = adapter->phy_regs.bmcr;
- break;
- case MII_BMSR:
- data->val_out = adapter->phy_regs.bmsr;
- break;
- case MII_PHYSID1:
- data->val_out = (adapter->hw.phy.id >> 16);
- break;
- case MII_PHYSID2:
- data->val_out = (adapter->hw.phy.id & 0xFFFF);
- break;
- case MII_ADVERTISE:
- data->val_out = adapter->phy_regs.advertise;
- break;
- case MII_LPA:
- data->val_out = adapter->phy_regs.lpa;
- break;
- case MII_EXPANSION:
- data->val_out = adapter->phy_regs.expansion;
- break;
- case MII_CTRL1000:
- data->val_out = adapter->phy_regs.ctrl1000;
- break;
- case MII_STAT1000:
- data->val_out = adapter->phy_regs.stat1000;
- break;
- case MII_ESTATUS:
- data->val_out = adapter->phy_regs.estatus;
- break;
- default:
- return -EIO;
- }
- 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_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc)
-{
- struct e1000_hw *hw = &adapter->hw;
- u32 i, mac_reg;
- u16 phy_reg, wuc_enable;
- int retval = 0;
-
- /* copy MAC RARs to PHY RARs */
- e1000_copy_rx_addrs_to_phy_ich8lan(hw);
-
- retval = hw->phy.ops.acquire(hw);
- if (retval) {
- e_err("Could not acquire PHY\n");
- return retval;
- }
-
- /* Enable access to wakeup registers on and set page to BM_WUC_PAGE */
- retval = e1000_enable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
- if (retval)
- goto out;
-
- /* copy MAC MTA to PHY MTA - only needed for pchlan */
- for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) {
- mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i);
- hw->phy.ops.write_reg_page(hw, BM_MTA(i),
- (u16)(mac_reg & 0xFFFF));
- hw->phy.ops.write_reg_page(hw, BM_MTA(i) + 1,
- (u16)((mac_reg >> 16) & 0xFFFF));
- }
-
- /* configure PHY Rx Control register */
- hw->phy.ops.read_reg_page(&adapter->hw, BM_RCTL, &phy_reg);
- mac_reg = er32(RCTL);
- if (mac_reg & E1000_RCTL_UPE)
- phy_reg |= BM_RCTL_UPE;
- if (mac_reg & E1000_RCTL_MPE)
- phy_reg |= BM_RCTL_MPE;
- phy_reg &= ~(BM_RCTL_MO_MASK);
- if (mac_reg & E1000_RCTL_MO_3)
- phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT)
- << BM_RCTL_MO_SHIFT);
- if (mac_reg & E1000_RCTL_BAM)
- phy_reg |= BM_RCTL_BAM;
- if (mac_reg & E1000_RCTL_PMCF)
- phy_reg |= BM_RCTL_PMCF;
- mac_reg = er32(CTRL);
- if (mac_reg & E1000_CTRL_RFCE)
- phy_reg |= BM_RCTL_RFCE;
- hw->phy.ops.write_reg_page(&adapter->hw, BM_RCTL, phy_reg);
-
- /* enable PHY wakeup in MAC register */
- ew32(WUFC, wufc);
- ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN);
-
- /* configure and enable PHY wakeup in PHY registers */
- hw->phy.ops.write_reg_page(&adapter->hw, BM_WUFC, wufc);
- hw->phy.ops.write_reg_page(&adapter->hw, BM_WUC, E1000_WUC_PME_EN);
-
- /* activate PHY wakeup */
- wuc_enable |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT;
- retval = e1000_disable_phy_wakeup_reg_access_bm(hw, &wuc_enable);
- if (retval)
- e_err("Could not set PHY Host Wakeup bit\n");
-out:
- hw->phy.ops.release(hw);
-
- return retval;
-}
-
-static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
- bool runtime)
-{
- 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;
- /* Runtime suspend should only enable wakeup for link changes */
- u32 wufc = runtime ? E1000_WUFC_LNKC : 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);
- }
- e1000e_reset_interrupt_capability(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;
- if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP))
- ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT;
- ew32(CTRL, ctrl);
-
- if (adapter->hw.phy.media_type == e1000_media_type_fiber ||
- adapter->hw.phy.media_type ==
- e1000_media_type_internal_serdes) {
- /* keep the laser running in D3 */
- ctrl_ext = er32(CTRL_EXT);
- ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA;
- ew32(CTRL_EXT, ctrl_ext);
- }
-
- if (adapter->flags & FLAG_IS_ICH)
- e1000_suspend_workarounds_ich8lan(&adapter->hw);
-
- /* Allow time for pending master requests to run */
- e1000e_disable_pcie_master(&adapter->hw);
-
- if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
- /* enable wakeup by the PHY */
- retval = e1000_init_phy_wakeup(adapter, wufc);
- if (retval)
- return retval;
- } else {
- /* enable wakeup by the MAC */
- ew32(WUFC, wufc);
- ew32(WUC, E1000_WUC_PME_EN);
- }
- } else {
- ew32(WUC, 0);
- ew32(WUFC, 0);
- }
-
- *enable_wake = !!wufc;
-
- /* make sure adapter isn't asleep if manageability is enabled */
- if ((adapter->flags & FLAG_MNG_PT_ENABLED) ||
- (hw->mac.ops.check_mng_mode(hw)))
- *enable_wake = true;
-
- 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.
- */
- e1000e_release_hw_control(adapter);
-
- pci_disable_device(pdev);
-
- return 0;
-}
-
-static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake)
-{
- if (sleep && wake) {
- pci_prepare_to_sleep(pdev);
- return;
- }
-
- pci_wake_from_d3(pdev, wake);
- pci_set_power_state(pdev, PCI_D3hot);
-}
-
-static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep,
- bool wake)
-{
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- /*
- * The pci-e switch on some quad port adapters will report a
- * correctable error when the MAC transitions from D0 to D3. To
- * prevent this we need to mask off the correctable errors on the
- * downstream port of the pci-e switch.
- */
- if (adapter->flags & FLAG_IS_QUAD_PORT) {
- struct pci_dev *us_dev = pdev->bus->self;
- int pos = pci_pcie_cap(us_dev);
- u16 devctl;
-
- pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl);
- pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL,
- (devctl & ~PCI_EXP_DEVCTL_CERE));
-
- e1000_power_off(pdev, sleep, wake);
-
- pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl);
- } else {
- e1000_power_off(pdev, sleep, wake);
- }
-}
-
-#ifdef CONFIG_PCIEASPM
-static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
-{
- pci_disable_link_state_locked(pdev, state);
-}
-#else
-static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
-{
- int pos;
- u16 reg16;
-
- /*
- * Both device and parent should have the same ASPM setting.
- * Disable ASPM in downstream component first and then upstream.
- */
- pos = pci_pcie_cap(pdev);
- pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, &reg16);
- reg16 &= ~state;
- pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16);
-
- if (!pdev->bus->self)
- return;
-
- pos = pci_pcie_cap(pdev->bus->self);
- pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, &reg16);
- reg16 &= ~state;
- pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16);
-}
-#endif
-static void e1000e_disable_aspm(struct pci_dev *pdev, u16 state)
-{
- dev_info(&pdev->dev, "Disabling ASPM %s %s\n",
- (state & PCIE_LINK_STATE_L0S) ? "L0s" : "",
- (state & PCIE_LINK_STATE_L1) ? "L1" : "");
-
- __e1000e_disable_aspm(pdev, state);
-}
-
-#ifdef CONFIG_PM
-static bool e1000e_pm_ready(struct e1000_adapter *adapter)
-{
- return !!adapter->tx_ring->buffer_info;
-}
-
-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;
- u16 aspm_disable_flag = 0;
- u32 err;
-
- if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
- aspm_disable_flag = PCIE_LINK_STATE_L0S;
- if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
- aspm_disable_flag |= PCIE_LINK_STATE_L1;
- if (aspm_disable_flag)
- e1000e_disable_aspm(pdev, aspm_disable_flag);
-
- pci_set_power_state(pdev, PCI_D0);
- pci_restore_state(pdev);
- pci_save_state(pdev);
-
- e1000e_set_interrupt_capability(adapter);
- if (netif_running(netdev)) {
- err = e1000_request_irq(adapter);
- if (err)
- return err;
- }
-
- if (hw->mac.type == e1000_pch2lan)
- e1000_resume_workarounds_pchlan(&adapter->hw);
-
- e1000e_power_up_phy(adapter);
-
- /* report the system wakeup cause from S3/S4 */
- if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) {
- u16 phy_data;
-
- e1e_rphy(&adapter->hw, BM_WUS, &phy_data);
- if (phy_data) {
- e_info("PHY Wakeup cause - %s\n",
- phy_data & E1000_WUS_EX ? "Unicast Packet" :
- phy_data & E1000_WUS_MC ? "Multicast Packet" :
- phy_data & E1000_WUS_BC ? "Broadcast Packet" :
- phy_data & E1000_WUS_MAG ? "Magic Packet" :
- phy_data & E1000_WUS_LNKC ? "Link Status "
- " Change" : "other");
- }
- e1e_wphy(&adapter->hw, BM_WUS, ~0);
- } else {
- u32 wus = er32(WUS);
- if (wus) {
- e_info("MAC Wakeup cause - %s\n",
- wus & E1000_WUS_EX ? "Unicast Packet" :
- wus & E1000_WUS_MC ? "Multicast Packet" :
- wus & E1000_WUS_BC ? "Broadcast Packet" :
- wus & E1000_WUS_MAG ? "Magic Packet" :
- wus & E1000_WUS_LNKC ? "Link Status Change" :
- "other");
- }
- ew32(WUS, ~0);
- }
-
- e1000e_reset(adapter);
-
- e1000_init_manageability_pt(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_get_hw_control(adapter);
-
- return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int e1000_suspend(struct device *dev)
-{
- struct pci_dev *pdev = to_pci_dev(dev);
- int retval;
- bool wake;
-
- retval = __e1000_shutdown(pdev, &wake, false);
- if (!retval)
- e1000_complete_shutdown(pdev, true, wake);
-
- return retval;
-}
-
-static int e1000_resume(struct device *dev)
-{
- struct pci_dev *pdev = to_pci_dev(dev);
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- if (e1000e_pm_ready(adapter))
- adapter->idle_check = true;
-
- return __e1000_resume(pdev);
-}
-#endif /* CONFIG_PM_SLEEP */
-
-#ifdef CONFIG_PM_RUNTIME
-static int e1000_runtime_suspend(struct device *dev)
-{
- struct pci_dev *pdev = to_pci_dev(dev);
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- if (e1000e_pm_ready(adapter)) {
- bool wake;
-
- __e1000_shutdown(pdev, &wake, true);
- }
-
- return 0;
-}
-
-static int e1000_idle(struct device *dev)
-{
- struct pci_dev *pdev = to_pci_dev(dev);
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- if (!e1000e_pm_ready(adapter))
- return 0;
-
- if (adapter->idle_check) {
- adapter->idle_check = false;
- if (!e1000e_has_link(adapter))
- pm_schedule_suspend(dev, MSEC_PER_SEC);
- }
-
- return -EBUSY;
-}
-
-static int e1000_runtime_resume(struct device *dev)
-{
- struct pci_dev *pdev = to_pci_dev(dev);
- struct net_device *netdev = pci_get_drvdata(pdev);
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- if (!e1000e_pm_ready(adapter))
- return 0;
-
- adapter->idle_check = !dev->power.runtime_auto;
- return __e1000_resume(pdev);
-}
-#endif /* CONFIG_PM_RUNTIME */
-#endif /* CONFIG_PM */
-
-static void e1000_shutdown(struct pci_dev *pdev)
-{
- bool wake = false;
-
- __e1000_shutdown(pdev, &wake, false);
-
- if (system_state == SYSTEM_POWER_OFF)
- e1000_complete_shutdown(pdev, false, wake);
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-
-static irqreturn_t e1000_intr_msix(int irq, void *data)
-{
- struct net_device *netdev = data;
- struct e1000_adapter *adapter = netdev_priv(netdev);
-
- if (adapter->msix_entries) {
- int vector, msix_irq;
-
- vector = 0;
- msix_irq = adapter->msix_entries[vector].vector;
- disable_irq(msix_irq);
- e1000_intr_msix_rx(msix_irq, netdev);
- enable_irq(msix_irq);
-
- vector++;
- msix_irq = adapter->msix_entries[vector].vector;
- disable_irq(msix_irq);
- e1000_intr_msix_tx(msix_irq, netdev);
- enable_irq(msix_irq);
-
- vector++;
- msix_irq = adapter->msix_entries[vector].vector;
- disable_irq(msix_irq);
- e1000_msix_other(msix_irq, netdev);
- enable_irq(msix_irq);
- }
-
- return IRQ_HANDLED;
-}
-
-/*
- * 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);
-
- switch (adapter->int_mode) {
- case E1000E_INT_MODE_MSIX:
- e1000_intr_msix(adapter->pdev->irq, netdev);
- break;
- case E1000E_INT_MODE_MSI:
- disable_irq(adapter->pdev->irq);
- e1000_intr_msi(adapter->pdev->irq, netdev);
- enable_irq(adapter->pdev->irq);
- break;
- default: /* E1000E_INT_MODE_LEGACY */
- disable_irq(adapter->pdev->irq);
- e1000_intr(adapter->pdev->irq, netdev);
- enable_irq(adapter->pdev->irq);
- break;
- }
-}
-#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 (state == pci_channel_io_perm_failure)
- return PCI_ERS_RESULT_DISCONNECT;
-
- 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;
- u16 aspm_disable_flag = 0;
- int err;
- pci_ers_result_t result;
-
- if (adapter->flags2 & FLAG2_DISABLE_ASPM_L0S)
- aspm_disable_flag = PCIE_LINK_STATE_L0S;
- if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1)
- aspm_disable_flag |= PCIE_LINK_STATE_L1;
- if (aspm_disable_flag)
- e1000e_disable_aspm(pdev, aspm_disable_flag);
-
- err = pci_enable_device_mem(pdev);
- if (err) {
- dev_err(&pdev->dev,
- "Cannot re-enable PCI device after reset.\n");
- result = PCI_ERS_RESULT_DISCONNECT;
- } else {
- pci_set_master(pdev);
- pdev->state_saved = true;
- pci_restore_state(pdev);
-
- pci_enable_wake(pdev, PCI_D3hot, 0);
- pci_enable_wake(pdev, PCI_D3cold, 0);
-
- e1000e_reset(adapter);
- ew32(WUS, ~0);
- result = PCI_ERS_RESULT_RECOVERED;
- }
-
- pci_cleanup_aer_uncorrect_error_status(pdev);
-
- return result;
-}
-
-/**
- * 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_pt(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_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 ret_val;
- u8 pba_str[E1000_PBANUM_LENGTH];
-
- /* print bus type/speed/width info */
- e_info("(PCI Express:2.5GT/s:%s) %pM\n",
- /* bus width */
- ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" :
- "Width x1"),
- /* MAC address */
- netdev->dev_addr);
- e_info("Intel(R) PRO/%s Network Connection\n",
- (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000");
- ret_val = e1000_read_pba_string_generic(hw, pba_str,
- E1000_PBANUM_LENGTH);
- if (ret_val)
- strncpy((char *)pba_str, "Unknown", sizeof(pba_str) - 1);
- e_info("MAC: %d, PHY: %d, PBA No: %s\n",
- hw->mac.type, hw->phy.type, pba_str);
-}
-
-static void e1000_eeprom_checks(struct e1000_adapter *adapter)
-{
- struct e1000_hw *hw = &adapter->hw;
- int ret_val;
- u16 buf = 0;
-
- if (hw->mac.type != e1000_82573)
- return;
-
- ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf);
- if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) {
- /* Deep Smart Power Down (DSPD) */
- dev_warn(&adapter->pdev->dev,
- "Warning: detected DSPD enabled in EEPROM\n");
- }
-}
-
-static const struct net_device_ops e1000e_netdev_ops = {
- .ndo_open = e1000_open,
- .ndo_stop = e1000_close,
- .ndo_start_xmit = e1000_xmit_frame,
- .ndo_get_stats64 = e1000e_get_stats64,
- .ndo_set_multicast_list = e1000_set_multi,
- .ndo_set_mac_address = e1000_set_mac,
- .ndo_change_mtu = e1000_change_mtu,
- .ndo_do_ioctl = e1000_ioctl,
- .ndo_tx_timeout = e1000_tx_timeout,
- .ndo_validate_addr = eth_validate_addr,
-
- .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid,
- .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid,
-#ifdef CONFIG_NET_POLL_CONTROLLER
- .ndo_poll_controller = e1000_netpoll,
-#endif
-};
-
-/**
- * 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];
- resource_size_t mmio_start, mmio_len;
- resource_size_t flash_start, flash_len;
-
- static int cards_found;
- u16 aspm_disable_flag = 0;
- int i, err, pci_using_dac;
- u16 eeprom_data = 0;
- u16 eeprom_apme_mask = E1000_EEPROM_APME;
-
- if (ei->flags2 & FLAG2_DISABLE_ASPM_L0S)
- aspm_disable_flag = PCIE_LINK_STATE_L0S;
- if (ei->flags2 & FLAG2_DISABLE_ASPM_L1)
- aspm_disable_flag |= PCIE_LINK_STATE_L1;
- if (aspm_disable_flag)
- e1000e_disable_aspm(pdev, aspm_disable_flag);
-
- err = pci_enable_device_mem(pdev);
- if (err)
- return err;
-
- pci_using_dac = 0;
- err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64));
- if (!err) {
- err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64));
- if (!err)
- pci_using_dac = 1;
- } else {
- err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
- if (err) {
- err = dma_set_coherent_mask(&pdev->dev,
- DMA_BIT_MASK(32));
- if (err) {
- dev_err(&pdev->dev, "No usable DMA "
- "configuration, aborting\n");
- goto err_dma;
- }
- }
- }
-
- err = pci_request_selected_regions_exclusive(pdev,
- pci_select_bars(pdev, IORESOURCE_MEM),
- e1000e_driver_name);
- if (err)
- goto err_pci_reg;
-
- /* AER (Advanced Error Reporting) hooks */
- pci_enable_pcie_error_reporting(pdev);
-
- pci_set_master(pdev);
- /* PCI config space info */
- err = pci_save_state(pdev);
- if (err)
- goto err_alloc_etherdev;
-
- err = -ENOMEM;
- netdev = alloc_etherdev(sizeof(struct e1000_adapter));
- if (!netdev)
- goto err_alloc_etherdev;
-
- SET_NETDEV_DEV(netdev, &pdev->dev);
-
- netdev->irq = pdev->irq;
-
- 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->flags2 = ei->flags2;
- adapter->hw.adapter = adapter;
- adapter->hw.mac.type = ei->mac;
- adapter->max_hw_frame_size = ei->max_hw_frame_size;
- 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->netdev_ops = &e1000e_netdev_ops;
- e1000e_set_ethtool_ops(netdev);
- netdev->watchdog_timeo = 5 * HZ;
- netif_napi_add(netdev, &adapter->napi, e1000_clean, 64);
- 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++;
-
- e1000e_check_options(adapter);
-
- /* setup adapter struct */
- err = e1000_sw_init(adapter);
- if (err)
- goto err_sw_init;
-
- 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_variants(adapter);
- if (err)
- goto err_hw_init;
-
- if ((adapter->flags & FLAG_IS_ICH) &&
- (adapter->flags & FLAG_READ_ONLY_NVM))
- e1000e_write_protect_nvm_ich8lan(&adapter->hw);
-
- hw->mac.ops.get_bus_info(&adapter->hw);
-
- adapter->hw.phy.autoneg_wait_to_complete = 0;
-
- /* Copper options */
- if (adapter->hw.phy.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))
- e_info("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;
-
- netdev->vlan_features |= NETIF_F_TSO;
- netdev->vlan_features |= NETIF_F_TSO6;
- netdev->vlan_features |= NETIF_F_HW_CSUM;
- netdev->vlan_features |= NETIF_F_SG;
-
- if (pci_using_dac) {
- netdev->features |= NETIF_F_HIGHDMA;
- netdev->vlan_features |= NETIF_F_HIGHDMA;
- }
-
- 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) {
- e_err("The NVM Checksum Is Not Valid\n");
- err = -EIO;
- goto err_eeprom;
- }
- }
-
- e1000_eeprom_checks(adapter);
-
- /* copy the MAC address */
- if (e1000e_read_mac_addr(&adapter->hw))
- e_err("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)) {
- e_err("Invalid MAC Address: %pM\n", netdev->perm_addr);
- 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);
- INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround);
- INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task);
- INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang);
-
- /* Initialize link parameters. User can change them with ethtool */
- adapter->hw.mac.autoneg = 1;
- adapter->fc_autoneg = 1;
- adapter->hw.fc.requested_mode = e1000_fc_default;
- adapter->hw.fc.current_mode = 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;
- if ((hw->mac.type > e1000_ich10lan) &&
- (eeprom_data & E1000_WUC_PHY_WAKE))
- adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP;
- } 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;
- device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol);
-
- /* save off EEPROM version number */
- e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers);
-
- /* 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_get_hw_control(adapter);
-
- strncpy(netdev->name, "eth%d", sizeof(netdev->name) - 1);
- err = register_netdev(netdev);
- if (err)
- goto err_register;
-
- /* carrier off reporting is important to ethtool even BEFORE open */
- netif_carrier_off(netdev);
-
- e1000_print_device_info(adapter);
-
- if (pci_dev_run_wake(pdev))
- pm_runtime_put_noidle(&pdev->dev);
-
- return 0;
-
-err_register:
- if (!(adapter->flags & FLAG_HAS_AMT))
- e1000e_release_hw_control(adapter);
-err_eeprom:
- if (!e1000_check_reset_block(&adapter->hw))
- e1000_phy_hw_reset(&adapter->hw);
-err_hw_init:
- kfree(adapter->tx_ring);
- kfree(adapter->rx_ring);
-err_sw_init:
- if (adapter->hw.flash_address)
- iounmap(adapter->hw.flash_address);
- e1000e_reset_interrupt_capability(adapter);
-err_flashmap:
- iounmap(adapter->hw.hw_addr);
-err_ioremap:
- free_netdev(netdev);
-err_alloc_etherdev:
- pci_release_selected_regions(pdev,
- pci_select_bars(pdev, IORESOURCE_MEM));
-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);
- bool down = test_bit(__E1000_DOWN, &adapter->state);
-
- /*
- * The timers may be rescheduled, so explicitly disable them
- * from being rescheduled.
- */
- if (!down)
- set_bit(__E1000_DOWN, &adapter->state);
- del_timer_sync(&adapter->watchdog_timer);
- del_timer_sync(&adapter->phy_info_timer);
-
- cancel_work_sync(&adapter->reset_task);
- cancel_work_sync(&adapter->watchdog_task);
- cancel_work_sync(&adapter->downshift_task);
- cancel_work_sync(&adapter->update_phy_task);
- cancel_work_sync(&adapter->print_hang_task);
-
- if (!(netdev->flags & IFF_UP))
- e1000_power_down_phy(adapter);
-
- /* Don't lie to e1000_close() down the road. */
- if (!down)
- clear_bit(__E1000_DOWN, &adapter->state);
- unregister_netdev(netdev);
-
- if (pci_dev_run_wake(pdev))
- pm_runtime_get_noresume(&pdev->dev);
-
- /*
- * Release control of h/w to f/w. If f/w is AMT enabled, this
- * would have already happened in close and is redundant.
- */
- e1000e_release_hw_control(adapter);
-
- e1000e_reset_interrupt_capability(adapter);
- 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_selected_regions(pdev,
- pci_select_bars(pdev, IORESOURCE_MEM));
-
- free_netdev(netdev);
-
- /* AER disable */
- pci_disable_pcie_error_reporting(pdev);
-
- 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 DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = {
- { 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_82571EB_SERDES_DUAL), board_82571 },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), 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_82574L), board_82574 },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 },
-
- { 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_ICH8_82567V_3), 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 },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan },
-
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan },
-
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan },
-
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan },
-
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan },
- { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan },
-
- { } /* terminate list */
-};
-MODULE_DEVICE_TABLE(pci, e1000_pci_tbl);
-
-#ifdef CONFIG_PM
-static const struct dev_pm_ops e1000_pm_ops = {
- SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume)
- SET_RUNTIME_PM_OPS(e1000_runtime_suspend,
- e1000_runtime_resume, e1000_idle)
-};
-#endif
-
-/* 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
- .driver.pm = &e1000_pm_ops,
-#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;
- pr_info("Intel(R) PRO/1000 Network Driver - %s\n",
- e1000e_driver_version);
- pr_info("Copyright(c) 1999 - 2011 Intel Corporation.\n");
- 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 */