diff options
| author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-04-07 07:42:33 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-10 20:03:27 -0700 |
| commit | dee1ad47f2ee75f5146d83ca757c1b7861c34c3b (patch) | |
| tree | 47cbdefe3d0f9b729724e378ad6a96eaddfd5fbc /drivers/net/e1000e/netdev.c | |
| parent | f7917c009c28c941ba151ee66f04dc7f6a2e1e0b (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.c | 6312 |
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, ®16); - 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, ®16); - 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 */ |