diff -r c5757cebfaea -r 2f7f5fa7b870 devices/e100-2.6.18-ethercat.c --- a/devices/e100-2.6.18-ethercat.c Mon Jul 28 08:30:44 2008 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,3074 +0,0 @@ -/****************************************************************************** - * - * $Id$ - * - * Copyright (C) 2007 Florian Pose, Ingenieurgemeinschaft IgH - * - * This file is part of the IgH EtherCAT Master. - * - * The IgH EtherCAT Master is free software; you can redistribute it - * and/or modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * The IgH EtherCAT Master is distributed in the hope that it will be - * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with the IgH EtherCAT Master; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - * The right to use EtherCAT Technology is granted and comes free of - * charge under condition of compatibility of product made by - * Licensee. People intending to distribute/sell products based on the - * code, have to sign an agreement to guarantee that products using - * software based on IgH EtherCAT master stay compatible with the actual - * EtherCAT specification (which are released themselves as an open - * standard) as the (only) precondition to have the right to use EtherCAT - * Technology, IP and trade marks. - * - *****************************************************************************/ - -/** - \file - EtherCAT driver for e100-compatible NICs. -*/ - -/* Former documentation: */ - -/******************************************************************************* - - Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved. - - This program is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by the Free - Software Foundation; either version 2 of the License, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, but WITHOUT - ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - more details. - - You should have received a copy of the GNU General Public License along with - this program; if not, write to the Free Software Foundation, Inc., 59 - Temple Place - Suite 330, Boston, MA 02111-1307, USA. - - The full GNU General Public License is included in this distribution in the - file called LICENSE. - - Contact Information: - Linux NICS - Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 - -*******************************************************************************/ - -/* - * e100.c: Intel(R) PRO/100 ethernet driver - * - * (Re)written 2003 by scott.feldman@intel.com. Based loosely on - * original e100 driver, but better described as a munging of - * e100, e1000, eepro100, tg3, 8139cp, and other drivers. - * - * References: - * Intel 8255x 10/100 Mbps Ethernet Controller Family, - * Open Source Software Developers Manual, - * http://sourceforge.net/projects/e1000 - * - * - * Theory of Operation - * - * I. General - * - * The driver supports Intel(R) 10/100 Mbps PCI Fast Ethernet - * controller family, which includes the 82557, 82558, 82559, 82550, - * 82551, and 82562 devices. 82558 and greater controllers - * integrate the Intel 82555 PHY. The controllers are used in - * server and client network interface cards, as well as in - * LAN-On-Motherboard (LOM), CardBus, MiniPCI, and ICHx - * configurations. 8255x supports a 32-bit linear addressing - * mode and operates at 33Mhz PCI clock rate. - * - * II. Driver Operation - * - * Memory-mapped mode is used exclusively to access the device's - * shared-memory structure, the Control/Status Registers (CSR). All - * setup, configuration, and control of the device, including queuing - * of Tx, Rx, and configuration commands is through the CSR. - * cmd_lock serializes accesses to the CSR command register. cb_lock - * protects the shared Command Block List (CBL). - * - * 8255x is highly MII-compliant and all access to the PHY go - * through the Management Data Interface (MDI). Consequently, the - * driver leverages the mii.c library shared with other MII-compliant - * devices. - * - * Big- and Little-Endian byte order as well as 32- and 64-bit - * archs are supported. Weak-ordered memory and non-cache-coherent - * archs are supported. - * - * III. Transmit - * - * A Tx skb is mapped and hangs off of a TCB. TCBs are linked - * together in a fixed-size ring (CBL) thus forming the flexible mode - * memory structure. A TCB marked with the suspend-bit indicates - * the end of the ring. The last TCB processed suspends the - * controller, and the controller can be restarted by issue a CU - * resume command to continue from the suspend point, or a CU start - * command to start at a given position in the ring. - * - * Non-Tx commands (config, multicast setup, etc) are linked - * into the CBL ring along with Tx commands. The common structure - * used for both Tx and non-Tx commands is the Command Block (CB). - * - * cb_to_use is the next CB to use for queuing a command; cb_to_clean - * is the next CB to check for completion; cb_to_send is the first - * CB to start on in case of a previous failure to resume. CB clean - * up happens in interrupt context in response to a CU interrupt. - * cbs_avail keeps track of number of free CB resources available. - * - * Hardware padding of short packets to minimum packet size is - * enabled. 82557 pads with 7Eh, while the later controllers pad - * with 00h. - * - * IV. Recieve - * - * The Receive Frame Area (RFA) comprises a ring of Receive Frame - * Descriptors (RFD) + data buffer, thus forming the simplified mode - * memory structure. Rx skbs are allocated to contain both the RFD - * and the data buffer, but the RFD is pulled off before the skb is - * indicated. The data buffer is aligned such that encapsulated - * protocol headers are u32-aligned. Since the RFD is part of the - * mapped shared memory, and completion status is contained within - * the RFD, the RFD must be dma_sync'ed to maintain a consistent - * view from software and hardware. - * - * Under typical operation, the receive unit (RU) is start once, - * and the controller happily fills RFDs as frames arrive. If - * replacement RFDs cannot be allocated, or the RU goes non-active, - * the RU must be restarted. Frame arrival generates an interrupt, - * and Rx indication and re-allocation happen in the same context, - * therefore no locking is required. A software-generated interrupt - * is generated from the watchdog to recover from a failed allocation - * senario where all Rx resources have been indicated and none re- - * placed. - * - * V. Miscellaneous - * - * VLAN offloading of tagging, stripping and filtering is not - * supported, but driver will accommodate the extra 4-byte VLAN tag - * for processing by upper layers. Tx/Rx Checksum offloading is not - * supported. Tx Scatter/Gather is not supported. Jumbo Frames is - * not supported (hardware limitation). - * - * MagicPacket(tm) WoL support is enabled/disabled via ethtool. - * - * Thanks to JC (jchapman@katalix.com) for helping with - * testing/troubleshooting the development driver. - * - * TODO: - * o several entry points race with dev->close - * o check for tx-no-resources/stop Q races with tx clean/wake Q - * - * FIXES: - * 2005/12/02 - Michael O'Donnell - * - Stratus87247: protect MDI control register manipulations - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -// EtherCAT includes -#include "../globals.h" -#include "ecdev.h" - -#define DRV_NAME "ec_e100" -#define DRV_EXT "-NAPI" -#define DRV_VERSION "3.5.10-k2"DRV_EXT -#define DRV_DESCRIPTION "EtherCAT-capable Intel(R) PRO/100 Network Driver" -#define PFX DRV_NAME ": " - -#define E100_WATCHDOG_PERIOD (2 * HZ) -#define E100_NAPI_WEIGHT 16 - -MODULE_DESCRIPTION(DRV_DESCRIPTION); -MODULE_AUTHOR("Florian Pose "); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRV_VERSION ", master " EC_MASTER_VERSION); - -// EtherCAT variables -static int ec_device_index = -1; -static int ec_device_master_index = 0; -struct net_device *e100_ec_netdev = NULL; -unsigned int e100_device_index = 0; - -// EtherCAT module parameters -module_param(ec_device_index, int, -1); -module_param(ec_device_master_index, int, 0); -MODULE_PARM_DESC(ec_device_index, - "Index of the device reserved for EtherCAT."); -MODULE_PARM_DESC(ec_device_master_index, - "Index of the EtherCAT master to register the device."); - -void e100_ec_poll(struct net_device *); - -static int debug = 3; -static int eeprom_bad_csum_allow = 0; -module_param(debug, int, 0); -module_param(eeprom_bad_csum_allow, int, 0); -MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); -MODULE_PARM_DESC(eeprom_bad_csum_allow, "Allow bad eeprom checksums"); -#define DPRINTK(nlevel, klevel, fmt, args...) \ - (void)((NETIF_MSG_##nlevel & nic->msg_enable) && \ - printk(KERN_##klevel PFX "%s: %s: " fmt, nic->netdev->name, \ - __FUNCTION__ , ## args)) - -#define INTEL_8255X_ETHERNET_DEVICE(device_id, ich) {\ - PCI_VENDOR_ID_INTEL, device_id, PCI_ANY_ID, PCI_ANY_ID, \ - PCI_CLASS_NETWORK_ETHERNET << 8, 0xFFFF00, ich } -static struct pci_device_id e100_id_table[] = { - INTEL_8255X_ETHERNET_DEVICE(0x1029, 0), - INTEL_8255X_ETHERNET_DEVICE(0x1030, 0), - INTEL_8255X_ETHERNET_DEVICE(0x1031, 3), - INTEL_8255X_ETHERNET_DEVICE(0x1032, 3), - INTEL_8255X_ETHERNET_DEVICE(0x1033, 3), - INTEL_8255X_ETHERNET_DEVICE(0x1034, 3), - INTEL_8255X_ETHERNET_DEVICE(0x1038, 3), - INTEL_8255X_ETHERNET_DEVICE(0x1039, 4), - INTEL_8255X_ETHERNET_DEVICE(0x103A, 4), - INTEL_8255X_ETHERNET_DEVICE(0x103B, 4), - INTEL_8255X_ETHERNET_DEVICE(0x103C, 4), - INTEL_8255X_ETHERNET_DEVICE(0x103D, 4), - INTEL_8255X_ETHERNET_DEVICE(0x103E, 4), - INTEL_8255X_ETHERNET_DEVICE(0x1050, 5), - INTEL_8255X_ETHERNET_DEVICE(0x1051, 5), - INTEL_8255X_ETHERNET_DEVICE(0x1052, 5), - INTEL_8255X_ETHERNET_DEVICE(0x1053, 5), - INTEL_8255X_ETHERNET_DEVICE(0x1054, 5), - INTEL_8255X_ETHERNET_DEVICE(0x1055, 5), - INTEL_8255X_ETHERNET_DEVICE(0x1056, 5), - INTEL_8255X_ETHERNET_DEVICE(0x1057, 5), - INTEL_8255X_ETHERNET_DEVICE(0x1059, 0), - INTEL_8255X_ETHERNET_DEVICE(0x1064, 6), - INTEL_8255X_ETHERNET_DEVICE(0x1065, 6), - INTEL_8255X_ETHERNET_DEVICE(0x1066, 6), - INTEL_8255X_ETHERNET_DEVICE(0x1067, 6), - INTEL_8255X_ETHERNET_DEVICE(0x1068, 6), - INTEL_8255X_ETHERNET_DEVICE(0x1069, 6), - INTEL_8255X_ETHERNET_DEVICE(0x106A, 6), - INTEL_8255X_ETHERNET_DEVICE(0x106B, 6), - INTEL_8255X_ETHERNET_DEVICE(0x1091, 7), - INTEL_8255X_ETHERNET_DEVICE(0x1092, 7), - INTEL_8255X_ETHERNET_DEVICE(0x1093, 7), - INTEL_8255X_ETHERNET_DEVICE(0x1094, 7), - INTEL_8255X_ETHERNET_DEVICE(0x1095, 7), - INTEL_8255X_ETHERNET_DEVICE(0x1209, 0), - INTEL_8255X_ETHERNET_DEVICE(0x1229, 0), - INTEL_8255X_ETHERNET_DEVICE(0x2449, 2), - INTEL_8255X_ETHERNET_DEVICE(0x2459, 2), - INTEL_8255X_ETHERNET_DEVICE(0x245D, 2), - INTEL_8255X_ETHERNET_DEVICE(0x27DC, 7), - { 0, } -}; -// prevent from being loaded automatically -//MODULE_DEVICE_TABLE(pci, e100_id_table); - -enum mac { - mac_82557_D100_A = 0, - mac_82557_D100_B = 1, - mac_82557_D100_C = 2, - mac_82558_D101_A4 = 4, - mac_82558_D101_B0 = 5, - mac_82559_D101M = 8, - mac_82559_D101S = 9, - mac_82550_D102 = 12, - mac_82550_D102_C = 13, - mac_82551_E = 14, - mac_82551_F = 15, - mac_82551_10 = 16, - mac_unknown = 0xFF, -}; - -enum phy { - phy_100a = 0x000003E0, - phy_100c = 0x035002A8, - phy_82555_tx = 0x015002A8, - phy_nsc_tx = 0x5C002000, - phy_82562_et = 0x033002A8, - phy_82562_em = 0x032002A8, - phy_82562_ek = 0x031002A8, - phy_82562_eh = 0x017002A8, - phy_unknown = 0xFFFFFFFF, -}; - -/* CSR (Control/Status Registers) */ -struct csr { - struct { - u8 status; - u8 stat_ack; - u8 cmd_lo; - u8 cmd_hi; - u32 gen_ptr; - } scb; - u32 port; - u16 flash_ctrl; - u8 eeprom_ctrl_lo; - u8 eeprom_ctrl_hi; - u32 mdi_ctrl; - u32 rx_dma_count; -}; - -enum scb_status { - rus_ready = 0x10, - rus_mask = 0x3C, -}; - -enum ru_state { - RU_SUSPENDED = 0, - RU_RUNNING = 1, - RU_UNINITIALIZED = -1, -}; - -enum scb_stat_ack { - stat_ack_not_ours = 0x00, - stat_ack_sw_gen = 0x04, - stat_ack_rnr = 0x10, - stat_ack_cu_idle = 0x20, - stat_ack_frame_rx = 0x40, - stat_ack_cu_cmd_done = 0x80, - stat_ack_not_present = 0xFF, - stat_ack_rx = (stat_ack_sw_gen | stat_ack_rnr | stat_ack_frame_rx), - stat_ack_tx = (stat_ack_cu_idle | stat_ack_cu_cmd_done), -}; - -enum scb_cmd_hi { - irq_mask_none = 0x00, - irq_mask_all = 0x01, - irq_sw_gen = 0x02, -}; - -enum scb_cmd_lo { - cuc_nop = 0x00, - ruc_start = 0x01, - ruc_load_base = 0x06, - cuc_start = 0x10, - cuc_resume = 0x20, - cuc_dump_addr = 0x40, - cuc_dump_stats = 0x50, - cuc_load_base = 0x60, - cuc_dump_reset = 0x70, -}; - -enum cuc_dump { - cuc_dump_complete = 0x0000A005, - cuc_dump_reset_complete = 0x0000A007, -}; - -enum port { - software_reset = 0x0000, - selftest = 0x0001, - selective_reset = 0x0002, -}; - -enum eeprom_ctrl_lo { - eesk = 0x01, - eecs = 0x02, - eedi = 0x04, - eedo = 0x08, -}; - -enum mdi_ctrl { - mdi_write = 0x04000000, - mdi_read = 0x08000000, - mdi_ready = 0x10000000, -}; - -enum eeprom_op { - op_write = 0x05, - op_read = 0x06, - op_ewds = 0x10, - op_ewen = 0x13, -}; - -enum eeprom_offsets { - eeprom_cnfg_mdix = 0x03, - eeprom_id = 0x0A, - eeprom_config_asf = 0x0D, - eeprom_smbus_addr = 0x90, -}; - -enum eeprom_cnfg_mdix { - eeprom_mdix_enabled = 0x0080, -}; - -enum eeprom_id { - eeprom_id_wol = 0x0020, -}; - -enum eeprom_config_asf { - eeprom_asf = 0x8000, - eeprom_gcl = 0x4000, -}; - -enum cb_status { - cb_complete = 0x8000, - cb_ok = 0x2000, -}; - -enum cb_command { - cb_nop = 0x0000, - cb_iaaddr = 0x0001, - cb_config = 0x0002, - cb_multi = 0x0003, - cb_tx = 0x0004, - cb_ucode = 0x0005, - cb_dump = 0x0006, - cb_tx_sf = 0x0008, - cb_cid = 0x1f00, - cb_i = 0x2000, - cb_s = 0x4000, - cb_el = 0x8000, -}; - -struct rfd { - u16 status; - u16 command; - u32 link; - u32 rbd; - u16 actual_size; - u16 size; -}; - -struct rx { - struct rx *next, *prev; - struct sk_buff *skb; - dma_addr_t dma_addr; -}; - -#if defined(__BIG_ENDIAN_BITFIELD) -#define X(a,b) b,a -#else -#define X(a,b) a,b -#endif -struct config { -/*0*/ u8 X(byte_count:6, pad0:2); -/*1*/ u8 X(X(rx_fifo_limit:4, tx_fifo_limit:3), pad1:1); -/*2*/ u8 adaptive_ifs; -/*3*/ u8 X(X(X(X(mwi_enable:1, type_enable:1), read_align_enable:1), - term_write_cache_line:1), pad3:4); -/*4*/ u8 X(rx_dma_max_count:7, pad4:1); -/*5*/ u8 X(tx_dma_max_count:7, dma_max_count_enable:1); -/*6*/ u8 X(X(X(X(X(X(X(late_scb_update:1, direct_rx_dma:1), - tno_intr:1), cna_intr:1), standard_tcb:1), standard_stat_counter:1), - rx_discard_overruns:1), rx_save_bad_frames:1); -/*7*/ u8 X(X(X(X(X(rx_discard_short_frames:1, tx_underrun_retry:2), - pad7:2), rx_extended_rfd:1), tx_two_frames_in_fifo:1), - tx_dynamic_tbd:1); -/*8*/ u8 X(X(mii_mode:1, pad8:6), csma_disabled:1); -/*9*/ u8 X(X(X(X(X(rx_tcpudp_checksum:1, pad9:3), vlan_arp_tco:1), - link_status_wake:1), arp_wake:1), mcmatch_wake:1); -/*10*/ u8 X(X(X(pad10:3, no_source_addr_insertion:1), preamble_length:2), - loopback:2); -/*11*/ u8 X(linear_priority:3, pad11:5); -/*12*/ u8 X(X(linear_priority_mode:1, pad12:3), ifs:4); -/*13*/ u8 ip_addr_lo; -/*14*/ u8 ip_addr_hi; -/*15*/ u8 X(X(X(X(X(X(X(promiscuous_mode:1, broadcast_disabled:1), - wait_after_win:1), pad15_1:1), ignore_ul_bit:1), crc_16_bit:1), - pad15_2:1), crs_or_cdt:1); -/*16*/ u8 fc_delay_lo; -/*17*/ u8 fc_delay_hi; -/*18*/ u8 X(X(X(X(X(rx_stripping:1, tx_padding:1), rx_crc_transfer:1), - rx_long_ok:1), fc_priority_threshold:3), pad18:1); -/*19*/ u8 X(X(X(X(X(X(X(addr_wake:1, magic_packet_disable:1), - fc_disable:1), fc_restop:1), fc_restart:1), fc_reject:1), - full_duplex_force:1), full_duplex_pin:1); -/*20*/ u8 X(X(X(pad20_1:5, fc_priority_location:1), multi_ia:1), pad20_2:1); -/*21*/ u8 X(X(pad21_1:3, multicast_all:1), pad21_2:4); -/*22*/ u8 X(X(rx_d102_mode:1, rx_vlan_drop:1), pad22:6); - u8 pad_d102[9]; -}; - -#define E100_MAX_MULTICAST_ADDRS 64 -struct multi { - u16 count; - u8 addr[E100_MAX_MULTICAST_ADDRS * ETH_ALEN + 2/*pad*/]; -}; - -/* Important: keep total struct u32-aligned */ -#define UCODE_SIZE 134 -struct cb { - u16 status; - u16 command; - u32 link; - union { - u8 iaaddr[ETH_ALEN]; - u32 ucode[UCODE_SIZE]; - struct config config; - struct multi multi; - struct { - u32 tbd_array; - u16 tcb_byte_count; - u8 threshold; - u8 tbd_count; - struct { - u32 buf_addr; - u16 size; - u16 eol; - } tbd; - } tcb; - u32 dump_buffer_addr; - } u; - struct cb *next, *prev; - dma_addr_t dma_addr; - struct sk_buff *skb; -}; - -enum loopback { - lb_none = 0, lb_mac = 1, lb_phy = 3, -}; - -struct stats { - u32 tx_good_frames, tx_max_collisions, tx_late_collisions, - tx_underruns, tx_lost_crs, tx_deferred, tx_single_collisions, - tx_multiple_collisions, tx_total_collisions; - u32 rx_good_frames, rx_crc_errors, rx_alignment_errors, - rx_resource_errors, rx_overrun_errors, rx_cdt_errors, - rx_short_frame_errors; - u32 fc_xmt_pause, fc_rcv_pause, fc_rcv_unsupported; - u16 xmt_tco_frames, rcv_tco_frames; - u32 complete; -}; - -struct mem { - struct { - u32 signature; - u32 result; - } selftest; - struct stats stats; - u8 dump_buf[596]; -}; - -struct param_range { - u32 min; - u32 max; - u32 count; -}; - -struct params { - struct param_range rfds; - struct param_range cbs; -}; - -struct nic { - /* Begin: frequently used values: keep adjacent for cache effect */ - u32 msg_enable ____cacheline_aligned; - struct net_device *netdev; - struct pci_dev *pdev; - - struct rx *rxs ____cacheline_aligned; - struct rx *rx_to_use; - struct rx *rx_to_clean; - struct rfd blank_rfd; - enum ru_state ru_running; - - spinlock_t cb_lock ____cacheline_aligned; - spinlock_t cmd_lock; - struct csr __iomem *csr; - enum scb_cmd_lo cuc_cmd; - unsigned int cbs_avail; - struct cb *cbs; - struct cb *cb_to_use; - struct cb *cb_to_send; - struct cb *cb_to_clean; - u16 tx_command; - /* End: frequently used values: keep adjacent for cache effect */ - - enum { - ich = (1 << 0), - promiscuous = (1 << 1), - multicast_all = (1 << 2), - wol_magic = (1 << 3), - ich_10h_workaround = (1 << 4), - } flags ____cacheline_aligned; - - enum mac mac; - enum phy phy; - struct params params; - struct net_device_stats net_stats; - struct timer_list watchdog; - struct timer_list blink_timer; - struct mii_if_info mii; - struct work_struct tx_timeout_task; - enum loopback loopback; - - struct mem *mem; - dma_addr_t dma_addr; - - dma_addr_t cbs_dma_addr; - u8 adaptive_ifs; - u8 tx_threshold; - u32 tx_frames; - u32 tx_collisions; - u32 tx_deferred; - u32 tx_single_collisions; - u32 tx_multiple_collisions; - u32 tx_fc_pause; - u32 tx_tco_frames; - - u32 rx_fc_pause; - u32 rx_fc_unsupported; - u32 rx_tco_frames; - u32 rx_over_length_errors; - - u8 rev_id; - u16 leds; - u16 eeprom_wc; - u16 eeprom[256]; - spinlock_t mdio_lock; - - u8 ethercat; - ec_device_t *ecdev; -}; - -static inline void e100_write_flush(struct nic *nic) -{ - /* Flush previous PCI writes through intermediate bridges - * by doing a benign read */ - (void)readb(&nic->csr->scb.status); -} - -static void e100_enable_irq(struct nic *nic) -{ - unsigned long flags; - - spin_lock_irqsave(&nic->cmd_lock, flags); - writeb(irq_mask_none, &nic->csr->scb.cmd_hi); - e100_write_flush(nic); - spin_unlock_irqrestore(&nic->cmd_lock, flags); -} - -static void e100_disable_irq(struct nic *nic) -{ - unsigned long flags; - - spin_lock_irqsave(&nic->cmd_lock, flags); - writeb(irq_mask_all, &nic->csr->scb.cmd_hi); - e100_write_flush(nic); - spin_unlock_irqrestore(&nic->cmd_lock, flags); -} - -static void e100_hw_reset(struct nic *nic) -{ - /* Put CU and RU into idle with a selective reset to get - * device off of PCI bus */ - writel(selective_reset, &nic->csr->port); - e100_write_flush(nic); udelay(20); - - /* Now fully reset device */ - writel(software_reset, &nic->csr->port); - e100_write_flush(nic); udelay(20); - - /* Mask off our interrupt line - it's unmasked after reset */ - e100_disable_irq(nic); -} - -static int e100_self_test(struct nic *nic) -{ - u32 dma_addr = nic->dma_addr + offsetof(struct mem, selftest); - - /* Passing the self-test is a pretty good indication - * that the device can DMA to/from host memory */ - - nic->mem->selftest.signature = 0; - nic->mem->selftest.result = 0xFFFFFFFF; - - writel(selftest | dma_addr, &nic->csr->port); - e100_write_flush(nic); - /* Wait 10 msec for self-test to complete */ - msleep(10); - - /* Interrupts are enabled after self-test */ - e100_disable_irq(nic); - - /* Check results of self-test */ - if(nic->mem->selftest.result != 0) { - DPRINTK(HW, ERR, "Self-test failed: result=0x%08X\n", - nic->mem->selftest.result); - return -ETIMEDOUT; - } - if(nic->mem->selftest.signature == 0) { - DPRINTK(HW, ERR, "Self-test failed: timed out\n"); - return -ETIMEDOUT; - } - - return 0; -} - -static void e100_eeprom_write(struct nic *nic, u16 addr_len, u16 addr, u16 data) -{ - u32 cmd_addr_data[3]; - u8 ctrl; - int i, j; - - /* Three cmds: write/erase enable, write data, write/erase disable */ - cmd_addr_data[0] = op_ewen << (addr_len - 2); - cmd_addr_data[1] = (((op_write << addr_len) | addr) << 16) | - cpu_to_le16(data); - cmd_addr_data[2] = op_ewds << (addr_len - 2); - - /* Bit-bang cmds to write word to eeprom */ - for(j = 0; j < 3; j++) { - - /* Chip select */ - writeb(eecs | eesk, &nic->csr->eeprom_ctrl_lo); - e100_write_flush(nic); udelay(4); - - for(i = 31; i >= 0; i--) { - ctrl = (cmd_addr_data[j] & (1 << i)) ? - eecs | eedi : eecs; - writeb(ctrl, &nic->csr->eeprom_ctrl_lo); - e100_write_flush(nic); udelay(4); - - writeb(ctrl | eesk, &nic->csr->eeprom_ctrl_lo); - e100_write_flush(nic); udelay(4); - } - /* Wait 10 msec for cmd to complete */ - msleep(10); - - /* Chip deselect */ - writeb(0, &nic->csr->eeprom_ctrl_lo); - e100_write_flush(nic); udelay(4); - } -}; - -/* General technique stolen from the eepro100 driver - very clever */ -static u16 e100_eeprom_read(struct nic *nic, u16 *addr_len, u16 addr) -{ - u32 cmd_addr_data; - u16 data = 0; - u8 ctrl; - int i; - - cmd_addr_data = ((op_read << *addr_len) | addr) << 16; - - /* Chip select */ - writeb(eecs | eesk, &nic->csr->eeprom_ctrl_lo); - e100_write_flush(nic); udelay(4); - - /* Bit-bang to read word from eeprom */ - for(i = 31; i >= 0; i--) { - ctrl = (cmd_addr_data & (1 << i)) ? eecs | eedi : eecs; - writeb(ctrl, &nic->csr->eeprom_ctrl_lo); - e100_write_flush(nic); udelay(4); - - writeb(ctrl | eesk, &nic->csr->eeprom_ctrl_lo); - e100_write_flush(nic); udelay(4); - - /* Eeprom drives a dummy zero to EEDO after receiving - * complete address. Use this to adjust addr_len. */ - ctrl = readb(&nic->csr->eeprom_ctrl_lo); - if(!(ctrl & eedo) && i > 16) { - *addr_len -= (i - 16); - i = 17; - } - - data = (data << 1) | (ctrl & eedo ? 1 : 0); - } - - /* Chip deselect */ - writeb(0, &nic->csr->eeprom_ctrl_lo); - e100_write_flush(nic); udelay(4); - - return le16_to_cpu(data); -}; - -/* Load entire EEPROM image into driver cache and validate checksum */ -static int e100_eeprom_load(struct nic *nic) -{ - u16 addr, addr_len = 8, checksum = 0; - - /* Try reading with an 8-bit addr len to discover actual addr len */ - e100_eeprom_read(nic, &addr_len, 0); - nic->eeprom_wc = 1 << addr_len; - - for(addr = 0; addr < nic->eeprom_wc; addr++) { - nic->eeprom[addr] = e100_eeprom_read(nic, &addr_len, addr); - if(addr < nic->eeprom_wc - 1) - checksum += cpu_to_le16(nic->eeprom[addr]); - } - - /* The checksum, stored in the last word, is calculated such that - * the sum of words should be 0xBABA */ - checksum = le16_to_cpu(0xBABA - checksum); - if(checksum != nic->eeprom[nic->eeprom_wc - 1]) { - DPRINTK(PROBE, ERR, "EEPROM corrupted\n"); - if (!eeprom_bad_csum_allow) - return -EAGAIN; - } - - return 0; -} - -/* Save (portion of) driver EEPROM cache to device and update checksum */ -static int e100_eeprom_save(struct nic *nic, u16 start, u16 count) -{ - u16 addr, addr_len = 8, checksum = 0; - - /* Try reading with an 8-bit addr len to discover actual addr len */ - e100_eeprom_read(nic, &addr_len, 0); - nic->eeprom_wc = 1 << addr_len; - - if(start + count >= nic->eeprom_wc) - return -EINVAL; - - for(addr = start; addr < start + count; addr++) - e100_eeprom_write(nic, addr_len, addr, nic->eeprom[addr]); - - /* The checksum, stored in the last word, is calculated such that - * the sum of words should be 0xBABA */ - for(addr = 0; addr < nic->eeprom_wc - 1; addr++) - checksum += cpu_to_le16(nic->eeprom[addr]); - nic->eeprom[nic->eeprom_wc - 1] = le16_to_cpu(0xBABA - checksum); - e100_eeprom_write(nic, addr_len, nic->eeprom_wc - 1, - nic->eeprom[nic->eeprom_wc - 1]); - - return 0; -} - -#define E100_WAIT_SCB_TIMEOUT 20000 /* we might have to wait 100ms!!! */ -#define E100_WAIT_SCB_FAST 20 /* delay like the old code */ -static int e100_exec_cmd(struct nic *nic, u8 cmd, dma_addr_t dma_addr) -{ - unsigned long flags = 0; - unsigned int i; - int err = 0; - - if (!nic->ethercat) - spin_lock_irqsave(&nic->cmd_lock, flags); - - /* Previous command is accepted when SCB clears */ - for(i = 0; i < E100_WAIT_SCB_TIMEOUT; i++) { - if(likely(!readb(&nic->csr->scb.cmd_lo))) - break; - cpu_relax(); - if(unlikely(i > E100_WAIT_SCB_FAST)) - udelay(5); - } - if(unlikely(i == E100_WAIT_SCB_TIMEOUT)) { - err = -EAGAIN; - goto err_unlock; - } - - if(unlikely(cmd != cuc_resume)) - writel(dma_addr, &nic->csr->scb.gen_ptr); - writeb(cmd, &nic->csr->scb.cmd_lo); - -err_unlock: - if (!nic->ethercat) - spin_unlock_irqrestore(&nic->cmd_lock, flags); - - return err; -} - -static int e100_exec_cb(struct nic *nic, struct sk_buff *skb, - void (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *)) -{ - struct cb *cb; - unsigned long flags = 0; - int err = 0; - - if (!nic->ethercat) - spin_lock_irqsave(&nic->cb_lock, flags); - - if(unlikely(!nic->cbs_avail)) { - err = -ENOMEM; - goto err_unlock; - } - - cb = nic->cb_to_use; - nic->cb_to_use = cb->next; - nic->cbs_avail--; - cb->skb = skb; - - if(unlikely(!nic->cbs_avail)) - err = -ENOSPC; - - cb_prepare(nic, cb, skb); - - /* Order is important otherwise we'll be in a race with h/w: - * set S-bit in current first, then clear S-bit in previous. */ - cb->command |= cpu_to_le16(cb_s); - wmb(); - cb->prev->command &= cpu_to_le16(~cb_s); - - while(nic->cb_to_send != nic->cb_to_use) { - if(unlikely(e100_exec_cmd(nic, nic->cuc_cmd, - nic->cb_to_send->dma_addr))) { - /* Ok, here's where things get sticky. It's - * possible that we can't schedule the command - * because the controller is too busy, so - * let's just queue the command and try again - * when another command is scheduled. */ - if(err == -ENOSPC) { - //request a reset - if (!nic->ethercat) - schedule_work(&nic->tx_timeout_task); - } - break; - } else { - nic->cuc_cmd = cuc_resume; - nic->cb_to_send = nic->cb_to_send->next; - } - } - -err_unlock: - if (!nic->ethercat) - spin_unlock_irqrestore(&nic->cb_lock, flags); - - return err; -} - -static u16 mdio_ctrl(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data) -{ - u32 data_out = 0; - unsigned int i; - unsigned long flags; - - - /* - * Stratus87247: we shouldn't be writing the MDI control - * register until the Ready bit shows True. Also, since - * manipulation of the MDI control registers is a multi-step - * procedure it should be done under lock. - */ - spin_lock_irqsave(&nic->mdio_lock, flags); - for (i = 100; i; --i) { - if (readl(&nic->csr->mdi_ctrl) & mdi_ready) - break; - udelay(20); - } - if (unlikely(!i)) { - printk("e100.mdio_ctrl(%s) won't go Ready\n", - nic->netdev->name ); - spin_unlock_irqrestore(&nic->mdio_lock, flags); - return 0; /* No way to indicate timeout error */ - } - writel((reg << 16) | (addr << 21) | dir | data, &nic->csr->mdi_ctrl); - - for (i = 0; i < 100; i++) { - udelay(20); - if ((data_out = readl(&nic->csr->mdi_ctrl)) & mdi_ready) - break; - } - spin_unlock_irqrestore(&nic->mdio_lock, flags); - DPRINTK(HW, DEBUG, - "%s:addr=%d, reg=%d, data_in=0x%04X, data_out=0x%04X\n", - dir == mdi_read ? "READ" : "WRITE", addr, reg, data, data_out); - return (u16)data_out; -} - -static int mdio_read(struct net_device *netdev, int addr, int reg) -{ - return mdio_ctrl(netdev_priv(netdev), addr, mdi_read, reg, 0); -} - -static void mdio_write(struct net_device *netdev, int addr, int reg, int data) -{ - mdio_ctrl(netdev_priv(netdev), addr, mdi_write, reg, data); -} - -static void e100_get_defaults(struct nic *nic) -{ - struct param_range rfds = { .min = 16, .max = 256, .count = 256 }; - struct param_range cbs = { .min = 64, .max = 256, .count = 128 }; - - pci_read_config_byte(nic->pdev, PCI_REVISION_ID, &nic->rev_id); - /* MAC type is encoded as rev ID; exception: ICH is treated as 82559 */ - nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->rev_id; - if(nic->mac == mac_unknown) - nic->mac = mac_82557_D100_A; - - nic->params.rfds = rfds; - nic->params.cbs = cbs; - - /* Quadwords to DMA into FIFO before starting frame transmit */ - nic->tx_threshold = 0xE0; - - /* no interrupt for every tx completion, delay = 256us if not 557*/ - nic->tx_command = cpu_to_le16(cb_tx | cb_tx_sf | - ((nic->mac >= mac_82558_D101_A4) ? cb_cid : cb_i)); - - /* Template for a freshly allocated RFD */ - nic->blank_rfd.command = cpu_to_le16(cb_el); - nic->blank_rfd.rbd = 0xFFFFFFFF; - nic->blank_rfd.size = cpu_to_le16(VLAN_ETH_FRAME_LEN); - - /* MII setup */ - nic->mii.phy_id_mask = 0x1F; - nic->mii.reg_num_mask = 0x1F; - nic->mii.dev = nic->netdev; - nic->mii.mdio_read = mdio_read; - nic->mii.mdio_write = mdio_write; -} - -static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb) -{ - struct config *config = &cb->u.config; - u8 *c = (u8 *)config; - - cb->command = cpu_to_le16(cb_config); - - memset(config, 0, sizeof(struct config)); - - config->byte_count = 0x16; /* bytes in this struct */ - config->rx_fifo_limit = 0x8; /* bytes in FIFO before DMA */ - config->direct_rx_dma = 0x1; /* reserved */ - config->standard_tcb = 0x1; /* 1=standard, 0=extended */ - config->standard_stat_counter = 0x1; /* 1=standard, 0=extended */ - config->rx_discard_short_frames = 0x1; /* 1=discard, 0=pass */ - config->tx_underrun_retry = 0x3; /* # of underrun retries */ - config->mii_mode = 0x1; /* 1=MII mode, 0=503 mode */ - config->pad10 = 0x6; - config->no_source_addr_insertion = 0x1; /* 1=no, 0=yes */ - config->preamble_length = 0x2; /* 0=1, 1=3, 2=7, 3=15 bytes */ - config->ifs = 0x6; /* x16 = inter frame spacing */ - config->ip_addr_hi = 0xF2; /* ARP IP filter - not used */ - config->pad15_1 = 0x1; - config->pad15_2 = 0x1; - config->crs_or_cdt = 0x0; /* 0=CRS only, 1=CRS or CDT */ - config->fc_delay_hi = 0x40; /* time delay for fc frame */ - config->tx_padding = 0x1; /* 1=pad short frames */ - config->fc_priority_threshold = 0x7; /* 7=priority fc disabled */ - config->pad18 = 0x1; - config->full_duplex_pin = 0x1; /* 1=examine FDX# pin */ - config->pad20_1 = 0x1F; - config->fc_priority_location = 0x1; /* 1=byte#31, 0=byte#19 */ - config->pad21_1 = 0x5; - - config->adaptive_ifs = nic->adaptive_ifs; - config->loopback = nic->loopback; - - if(nic->mii.force_media && nic->mii.full_duplex) - config->full_duplex_force = 0x1; /* 1=force, 0=auto */ - - if(nic->flags & promiscuous || nic->loopback) { - config->rx_save_bad_frames = 0x1; /* 1=save, 0=discard */ - config->rx_discard_short_frames = 0x0; /* 1=discard, 0=save */ - config->promiscuous_mode = 0x1; /* 1=on, 0=off */ - } - - if(nic->flags & multicast_all) - config->multicast_all = 0x1; /* 1=accept, 0=no */ - - /* disable WoL when up */ - if (nic->ethercat || - (netif_running(nic->netdev) || !(nic->flags & wol_magic))) - config->magic_packet_disable = 0x1; /* 1=off, 0=on */ - - if(nic->mac >= mac_82558_D101_A4) { - config->fc_disable = 0x1; /* 1=Tx fc off, 0=Tx fc on */ - config->mwi_enable = 0x1; /* 1=enable, 0=disable */ - config->standard_tcb = 0x0; /* 1=standard, 0=extended */ - config->rx_long_ok = 0x1; /* 1=VLANs ok, 0=standard */ - if(nic->mac >= mac_82559_D101M) - config->tno_intr = 0x1; /* TCO stats enable */ - else - config->standard_stat_counter = 0x0; - } - - DPRINTK(HW, DEBUG, "[00-07]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", - c[0], c[1], c[2], c[3], c[4], c[5], c[6], c[7]); - DPRINTK(HW, DEBUG, "[08-15]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", - c[8], c[9], c[10], c[11], c[12], c[13], c[14], c[15]); - DPRINTK(HW, DEBUG, "[16-23]=%02X:%02X:%02X:%02X:%02X:%02X:%02X:%02X\n", - c[16], c[17], c[18], c[19], c[20], c[21], c[22], c[23]); -} - -/********************************************************/ -/* Micro code for 8086:1229 Rev 8 */ -/********************************************************/ - -/* Parameter values for the D101M B-step */ -#define D101M_CPUSAVER_TIMER_DWORD 78 -#define D101M_CPUSAVER_BUNDLE_DWORD 65 -#define D101M_CPUSAVER_MIN_SIZE_DWORD 126 - -#define D101M_B_RCVBUNDLE_UCODE \ -{\ -0x00550215, 0xFFFF0437, 0xFFFFFFFF, 0x06A70789, 0xFFFFFFFF, 0x0558FFFF, \ -0x000C0001, 0x00101312, 0x000C0008, 0x00380216, \ -0x0010009C, 0x00204056, 0x002380CC, 0x00380056, \ -0x0010009C, 0x00244C0B, 0x00000800, 0x00124818, \ -0x00380438, 0x00000000, 0x00140000, 0x00380555, \ -0x00308000, 0x00100662, 0x00100561, 0x000E0408, \ -0x00134861, 0x000C0002, 0x00103093, 0x00308000, \ -0x00100624, 0x00100561, 0x000E0408, 0x00100861, \ -0x000C007E, 0x00222C21, 0x000C0002, 0x00103093, \ -0x00380C7A, 0x00080000, 0x00103090, 0x00380C7A, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x0010009C, 0x00244C2D, 0x00010004, 0x00041000, \ -0x003A0437, 0x00044010, 0x0038078A, 0x00000000, \ -0x00100099, 0x00206C7A, 0x0010009C, 0x00244C48, \ -0x00130824, 0x000C0001, 0x00101213, 0x00260C75, \ -0x00041000, 0x00010004, 0x00130826, 0x000C0006, \ -0x002206A8, 0x0013C926, 0x00101313, 0x003806A8, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00080600, 0x00101B10, 0x00050004, 0x00100826, \ -0x00101210, 0x00380C34, 0x00000000, 0x00000000, \ -0x0021155B, 0x00100099, 0x00206559, 0x0010009C, \ -0x00244559, 0x00130836, 0x000C0000, 0x00220C62, \ -0x000C0001, 0x00101B13, 0x00229C0E, 0x00210C0E, \ -0x00226C0E, 0x00216C0E, 0x0022FC0E, 0x00215C0E, \ -0x00214C0E, 0x00380555, 0x00010004, 0x00041000, \ -0x00278C67, 0x00040800, 0x00018100, 0x003A0437, \ -0x00130826, 0x000C0001, 0x00220559, 0x00101313, \ -0x00380559, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00130831, 0x0010090B, 0x00124813, \ -0x000CFF80, 0x002606AB, 0x00041000, 0x00010004, \ -0x003806A8, 0x00000000, 0x00000000, 0x00000000, \ -} - -/********************************************************/ -/* Micro code for 8086:1229 Rev 9 */ -/********************************************************/ - -/* Parameter values for the D101S */ -#define D101S_CPUSAVER_TIMER_DWORD 78 -#define D101S_CPUSAVER_BUNDLE_DWORD 67 -#define D101S_CPUSAVER_MIN_SIZE_DWORD 128 - -#define D101S_RCVBUNDLE_UCODE \ -{\ -0x00550242, 0xFFFF047E, 0xFFFFFFFF, 0x06FF0818, 0xFFFFFFFF, 0x05A6FFFF, \ -0x000C0001, 0x00101312, 0x000C0008, 0x00380243, \ -0x0010009C, 0x00204056, 0x002380D0, 0x00380056, \ -0x0010009C, 0x00244F8B, 0x00000800, 0x00124818, \ -0x0038047F, 0x00000000, 0x00140000, 0x003805A3, \ -0x00308000, 0x00100610, 0x00100561, 0x000E0408, \ -0x00134861, 0x000C0002, 0x00103093, 0x00308000, \ -0x00100624, 0x00100561, 0x000E0408, 0x00100861, \ -0x000C007E, 0x00222FA1, 0x000C0002, 0x00103093, \ -0x00380F90, 0x00080000, 0x00103090, 0x00380F90, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x0010009C, 0x00244FAD, 0x00010004, 0x00041000, \ -0x003A047E, 0x00044010, 0x00380819, 0x00000000, \ -0x00100099, 0x00206FFD, 0x0010009A, 0x0020AFFD, \ -0x0010009C, 0x00244FC8, 0x00130824, 0x000C0001, \ -0x00101213, 0x00260FF7, 0x00041000, 0x00010004, \ -0x00130826, 0x000C0006, 0x00220700, 0x0013C926, \ -0x00101313, 0x00380700, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00080600, 0x00101B10, 0x00050004, 0x00100826, \ -0x00101210, 0x00380FB6, 0x00000000, 0x00000000, \ -0x002115A9, 0x00100099, 0x002065A7, 0x0010009A, \ -0x0020A5A7, 0x0010009C, 0x002445A7, 0x00130836, \ -0x000C0000, 0x00220FE4, 0x000C0001, 0x00101B13, \ -0x00229F8E, 0x00210F8E, 0x00226F8E, 0x00216F8E, \ -0x0022FF8E, 0x00215F8E, 0x00214F8E, 0x003805A3, \ -0x00010004, 0x00041000, 0x00278FE9, 0x00040800, \ -0x00018100, 0x003A047E, 0x00130826, 0x000C0001, \ -0x002205A7, 0x00101313, 0x003805A7, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00130831, \ -0x0010090B, 0x00124813, 0x000CFF80, 0x00260703, \ -0x00041000, 0x00010004, 0x00380700 \ -} - -/********************************************************/ -/* Micro code for the 8086:1229 Rev F/10 */ -/********************************************************/ - -/* Parameter values for the D102 E-step */ -#define D102_E_CPUSAVER_TIMER_DWORD 42 -#define D102_E_CPUSAVER_BUNDLE_DWORD 54 -#define D102_E_CPUSAVER_MIN_SIZE_DWORD 46 - -#define D102_E_RCVBUNDLE_UCODE \ -{\ -0x007D028F, 0x0E4204F9, 0x14ED0C85, 0x14FA14E9, 0x0EF70E36, 0x1FFF1FFF, \ -0x00E014B9, 0x00000000, 0x00000000, 0x00000000, \ -0x00E014BD, 0x00000000, 0x00000000, 0x00000000, \ -0x00E014D5, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00E014C1, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00E014C8, 0x00000000, 0x00000000, 0x00000000, \ -0x00200600, 0x00E014EE, 0x00000000, 0x00000000, \ -0x0030FF80, 0x00940E46, 0x00038200, 0x00102000, \ -0x00E00E43, 0x00000000, 0x00000000, 0x00000000, \ -0x00300006, 0x00E014FB, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00906E41, 0x00800E3C, 0x00E00E39, 0x00000000, \ -0x00906EFD, 0x00900EFD, 0x00E00EF8, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -0x00000000, 0x00000000, 0x00000000, 0x00000000, \ -} - -static void e100_setup_ucode(struct nic *nic, struct cb *cb, struct sk_buff *skb) -{ -/* *INDENT-OFF* */ - static struct { - u32 ucode[UCODE_SIZE + 1]; - u8 mac; - u8 timer_dword; - u8 bundle_dword; - u8 min_size_dword; - } ucode_opts[] = { - { D101M_B_RCVBUNDLE_UCODE, - mac_82559_D101M, - D101M_CPUSAVER_TIMER_DWORD, - D101M_CPUSAVER_BUNDLE_DWORD, - D101M_CPUSAVER_MIN_SIZE_DWORD }, - { D101S_RCVBUNDLE_UCODE, - mac_82559_D101S, - D101S_CPUSAVER_TIMER_DWORD, - D101S_CPUSAVER_BUNDLE_DWORD, - D101S_CPUSAVER_MIN_SIZE_DWORD }, - { D102_E_RCVBUNDLE_UCODE, - mac_82551_F, - D102_E_CPUSAVER_TIMER_DWORD, - D102_E_CPUSAVER_BUNDLE_DWORD, - D102_E_CPUSAVER_MIN_SIZE_DWORD }, - { D102_E_RCVBUNDLE_UCODE, - mac_82551_10, - D102_E_CPUSAVER_TIMER_DWORD, - D102_E_CPUSAVER_BUNDLE_DWORD, - D102_E_CPUSAVER_MIN_SIZE_DWORD }, - { {0}, 0, 0, 0, 0} - }, *opts; -/* *INDENT-ON* */ - -/************************************************************************* -* CPUSaver parameters -* -* All CPUSaver parameters are 16-bit literals that are part of a -* "move immediate value" instruction. By changing the value of -* the literal in the instruction before the code is loaded, the -* driver can change the algorithm. -* -* INTDELAY - This loads the dead-man timer with its inital value. -* When this timer expires the interrupt is asserted, and the -* timer is reset each time a new packet is received. (see -* BUNDLEMAX below to set the limit on number of chained packets) -* The current default is 0x600 or 1536. Experiments show that -* the value should probably stay within the 0x200 - 0x1000. -* -* BUNDLEMAX - -* This sets the maximum number of frames that will be bundled. In -* some situations, such as the TCP windowing algorithm, it may be -* better to limit the growth of the bundle size than let it go as -* high as it can, because that could cause too much added latency. -* The default is six, because this is the number of packets in the -* default TCP window size. A value of 1 would make CPUSaver indicate -* an interrupt for every frame received. If you do not want to put -* a limit on the bundle size, set this value to xFFFF. -* -* BUNDLESMALL - -* This contains a bit-mask describing the minimum size frame that -* will be bundled. The default masks the lower 7 bits, which means -* that any frame less than 128 bytes in length will not be bundled, -* but will instead immediately generate an interrupt. This does -* not affect the current bundle in any way. Any frame that is 128 -* bytes or large will be bundled normally. This feature is meant -* to provide immediate indication of ACK frames in a TCP environment. -* Customers were seeing poor performance when a machine with CPUSaver -* enabled was sending but not receiving. The delay introduced when -* the ACKs were received was enough to reduce total throughput, because -* the sender would sit idle until the ACK was finally seen. -* -* The current default is 0xFF80, which masks out the lower 7 bits. -* This means that any frame which is x7F (127) bytes or smaller -* will cause an immediate interrupt. Because this value must be a -* bit mask, there are only a few valid values that can be used. To -* turn this feature off, the driver can write the value xFFFF to the -* lower word of this instruction (in the same way that the other -* parameters are used). Likewise, a value of 0xF800 (2047) would -* cause an interrupt to be generated for every frame, because all -* standard Ethernet frames are <= 2047 bytes in length. -*************************************************************************/ - -/* if you wish to disable the ucode functionality, while maintaining the - * workarounds it provides, set the following defines to: - * BUNDLESMALL 0 - * BUNDLEMAX 1 - * INTDELAY 1 - */ -#define BUNDLESMALL 1 -#define BUNDLEMAX (u16)6 -#define INTDELAY (u16)1536 /* 0x600 */ - - /* do not load u-code for ICH devices */ - if (nic->flags & ich) - goto noloaducode; - - /* Search for ucode match against h/w rev_id */ - for (opts = ucode_opts; opts->mac; opts++) { - int i; - u32 *ucode = opts->ucode; - if (nic->mac != opts->mac) - continue; - - /* Insert user-tunable settings */ - ucode[opts->timer_dword] &= 0xFFFF0000; - ucode[opts->timer_dword] |= INTDELAY; - ucode[opts->bundle_dword] &= 0xFFFF0000; - ucode[opts->bundle_dword] |= BUNDLEMAX; - ucode[opts->min_size_dword] &= 0xFFFF0000; - ucode[opts->min_size_dword] |= (BUNDLESMALL) ? 0xFFFF : 0xFF80; - - for (i = 0; i < UCODE_SIZE; i++) - cb->u.ucode[i] = cpu_to_le32(ucode[i]); - cb->command = cpu_to_le16(cb_ucode | cb_el); - return; - } - -noloaducode: - cb->command = cpu_to_le16(cb_nop | cb_el); -} - -static inline int e100_exec_cb_wait(struct nic *nic, struct sk_buff *skb, - void (*cb_prepare)(struct nic *, struct cb *, struct sk_buff *)) -{ - int err = 0, counter = 50; - struct cb *cb = nic->cb_to_clean; - - if ((err = e100_exec_cb(nic, NULL, e100_setup_ucode))) - DPRINTK(PROBE,ERR, "ucode cmd failed with error %d\n", err); - - /* must restart cuc */ - nic->cuc_cmd = cuc_start; - - /* wait for completion */ - e100_write_flush(nic); - udelay(10); - - /* wait for possibly (ouch) 500ms */ - while (!(cb->status & cpu_to_le16(cb_complete))) { - msleep(10); - if (!--counter) break; - } - - /* ack any interupts, something could have been set */ - writeb(~0, &nic->csr->scb.stat_ack); - - /* if the command failed, or is not OK, notify and return */ - if (!counter || !(cb->status & cpu_to_le16(cb_ok))) { - DPRINTK(PROBE,ERR, "ucode load failed\n"); - err = -EPERM; - } - - return err; -} - -static void e100_setup_iaaddr(struct nic *nic, struct cb *cb, - struct sk_buff *skb) -{ - cb->command = cpu_to_le16(cb_iaaddr); - memcpy(cb->u.iaaddr, nic->netdev->dev_addr, ETH_ALEN); -} - -static void e100_dump(struct nic *nic, struct cb *cb, struct sk_buff *skb) -{ - cb->command = cpu_to_le16(cb_dump); - cb->u.dump_buffer_addr = cpu_to_le32(nic->dma_addr + - offsetof(struct mem, dump_buf)); -} - -#define NCONFIG_AUTO_SWITCH 0x0080 -#define MII_NSC_CONG MII_RESV1 -#define NSC_CONG_ENABLE 0x0100 -#define NSC_CONG_TXREADY 0x0400 -#define ADVERTISE_FC_SUPPORTED 0x0400 -static int e100_phy_init(struct nic *nic) -{ - struct net_device *netdev = nic->netdev; - u32 addr; - u16 bmcr, stat, id_lo, id_hi, cong; - - /* Discover phy addr by searching addrs in order {1,0,2,..., 31} */ - for(addr = 0; addr < 32; addr++) { - nic->mii.phy_id = (addr == 0) ? 1 : (addr == 1) ? 0 : addr; - bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR); - stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR); - stat = mdio_read(netdev, nic->mii.phy_id, MII_BMSR); - if(!((bmcr == 0xFFFF) || ((stat == 0) && (bmcr == 0)))) - break; - } - DPRINTK(HW, DEBUG, "phy_addr = %d\n", nic->mii.phy_id); - if(addr == 32) - return -EAGAIN; - - /* Selected the phy and isolate the rest */ - for(addr = 0; addr < 32; addr++) { - if(addr != nic->mii.phy_id) { - mdio_write(netdev, addr, MII_BMCR, BMCR_ISOLATE); - } else { - bmcr = mdio_read(netdev, addr, MII_BMCR); - mdio_write(netdev, addr, MII_BMCR, - bmcr & ~BMCR_ISOLATE); - } - } - - /* Get phy ID */ - id_lo = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID1); - id_hi = mdio_read(netdev, nic->mii.phy_id, MII_PHYSID2); - nic->phy = (u32)id_hi << 16 | (u32)id_lo; - DPRINTK(HW, DEBUG, "phy ID = 0x%08X\n", nic->phy); - - /* Handle National tx phys */ -#define NCS_PHY_MODEL_MASK 0xFFF0FFFF - if((nic->phy & NCS_PHY_MODEL_MASK) == phy_nsc_tx) { - /* Disable congestion control */ - cong = mdio_read(netdev, nic->mii.phy_id, MII_NSC_CONG); - cong |= NSC_CONG_TXREADY; - cong &= ~NSC_CONG_ENABLE; - mdio_write(netdev, nic->mii.phy_id, MII_NSC_CONG, cong); - } - - if((nic->mac >= mac_82550_D102) || ((nic->flags & ich) && - (mdio_read(netdev, nic->mii.phy_id, MII_TPISTATUS) & 0x8000))) { - /* enable/disable MDI/MDI-X auto-switching. - MDI/MDI-X auto-switching is disabled for 82551ER/QM chips */ - if((nic->mac == mac_82551_E) || (nic->mac == mac_82551_F) || - (nic->mac == mac_82551_10) || (nic->mii.force_media) || - !(nic->eeprom[eeprom_cnfg_mdix] & eeprom_mdix_enabled)) - mdio_write(netdev, nic->mii.phy_id, MII_NCONFIG, 0); - else - mdio_write(netdev, nic->mii.phy_id, MII_NCONFIG, NCONFIG_AUTO_SWITCH); - } - - return 0; -} - -static int e100_hw_init(struct nic *nic) -{ - int err; - - e100_hw_reset(nic); - - DPRINTK(HW, ERR, "e100_hw_init\n"); - if(!in_interrupt() && (err = e100_self_test(nic))) - return err; - - if((err = e100_phy_init(nic))) - return err; - if((err = e100_exec_cmd(nic, cuc_load_base, 0))) - return err; - if((err = e100_exec_cmd(nic, ruc_load_base, 0))) - return err; - if ((err = e100_exec_cb_wait(nic, NULL, e100_setup_ucode))) - return err; - if((err = e100_exec_cb(nic, NULL, e100_configure))) - return err; - if((err = e100_exec_cb(nic, NULL, e100_setup_iaaddr))) - return err; - if((err = e100_exec_cmd(nic, cuc_dump_addr, - nic->dma_addr + offsetof(struct mem, stats)))) - return err; - if((err = e100_exec_cmd(nic, cuc_dump_reset, 0))) - return err; - - e100_disable_irq(nic); - - return 0; -} - -static void e100_multi(struct nic *nic, struct cb *cb, struct sk_buff *skb) -{ - struct net_device *netdev = nic->netdev; - struct dev_mc_list *list = netdev->mc_list; - u16 i, count = min(netdev->mc_count, E100_MAX_MULTICAST_ADDRS); - - cb->command = cpu_to_le16(cb_multi); - cb->u.multi.count = cpu_to_le16(count * ETH_ALEN); - for(i = 0; list && i < count; i++, list = list->next) - memcpy(&cb->u.multi.addr[i*ETH_ALEN], &list->dmi_addr, - ETH_ALEN); -} - -static void e100_set_multicast_list(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - - DPRINTK(HW, DEBUG, "mc_count=%d, flags=0x%04X\n", - netdev->mc_count, netdev->flags); - - if(netdev->flags & IFF_PROMISC) - nic->flags |= promiscuous; - else - nic->flags &= ~promiscuous; - - if(netdev->flags & IFF_ALLMULTI || - netdev->mc_count > E100_MAX_MULTICAST_ADDRS) - nic->flags |= multicast_all; - else - nic->flags &= ~multicast_all; - - e100_exec_cb(nic, NULL, e100_configure); - e100_exec_cb(nic, NULL, e100_multi); -} - -static void e100_update_stats(struct nic *nic) -{ - struct net_device_stats *ns = &nic->net_stats; - struct stats *s = &nic->mem->stats; - u32 *complete = (nic->mac < mac_82558_D101_A4) ? &s->fc_xmt_pause : - (nic->mac < mac_82559_D101M) ? (u32 *)&s->xmt_tco_frames : - &s->complete; - - /* Device's stats reporting may take several microseconds to - * complete, so where always waiting for results of the - * previous command. */ - - if(*complete == le32_to_cpu(cuc_dump_reset_complete)) { - *complete = 0; - nic->tx_frames = le32_to_cpu(s->tx_good_frames); - nic->tx_collisions = le32_to_cpu(s->tx_total_collisions); - ns->tx_aborted_errors += le32_to_cpu(s->tx_max_collisions); - ns->tx_window_errors += le32_to_cpu(s->tx_late_collisions); - ns->tx_carrier_errors += le32_to_cpu(s->tx_lost_crs); - ns->tx_fifo_errors += le32_to_cpu(s->tx_underruns); - ns->collisions += nic->tx_collisions; - ns->tx_errors += le32_to_cpu(s->tx_max_collisions) + - le32_to_cpu(s->tx_lost_crs); - ns->rx_length_errors += le32_to_cpu(s->rx_short_frame_errors) + - nic->rx_over_length_errors; - ns->rx_crc_errors += le32_to_cpu(s->rx_crc_errors); - ns->rx_frame_errors += le32_to_cpu(s->rx_alignment_errors); - ns->rx_over_errors += le32_to_cpu(s->rx_overrun_errors); - ns->rx_fifo_errors += le32_to_cpu(s->rx_overrun_errors); - ns->rx_missed_errors += le32_to_cpu(s->rx_resource_errors); - ns->rx_errors += le32_to_cpu(s->rx_crc_errors) + - le32_to_cpu(s->rx_alignment_errors) + - le32_to_cpu(s->rx_short_frame_errors) + - le32_to_cpu(s->rx_cdt_errors); - nic->tx_deferred += le32_to_cpu(s->tx_deferred); - nic->tx_single_collisions += - le32_to_cpu(s->tx_single_collisions); - nic->tx_multiple_collisions += - le32_to_cpu(s->tx_multiple_collisions); - if(nic->mac >= mac_82558_D101_A4) { - nic->tx_fc_pause += le32_to_cpu(s->fc_xmt_pause); - nic->rx_fc_pause += le32_to_cpu(s->fc_rcv_pause); - nic->rx_fc_unsupported += - le32_to_cpu(s->fc_rcv_unsupported); - if(nic->mac >= mac_82559_D101M) { - nic->tx_tco_frames += - le16_to_cpu(s->xmt_tco_frames); - nic->rx_tco_frames += - le16_to_cpu(s->rcv_tco_frames); - } - } - } - - - if(e100_exec_cmd(nic, cuc_dump_reset, 0)) - DPRINTK(TX_ERR, DEBUG, "exec cuc_dump_reset failed\n"); -} - -static void e100_adjust_adaptive_ifs(struct nic *nic, int speed, int duplex) -{ - /* Adjust inter-frame-spacing (IFS) between two transmits if - * we're getting collisions on a half-duplex connection. */ - - if(duplex == DUPLEX_HALF) { - u32 prev = nic->adaptive_ifs; - u32 min_frames = (speed == SPEED_100) ? 1000 : 100; - - if((nic->tx_frames / 32 < nic->tx_collisions) && - (nic->tx_frames > min_frames)) { - if(nic->adaptive_ifs < 60) - nic->adaptive_ifs += 5; - } else if (nic->tx_frames < min_frames) { - if(nic->adaptive_ifs >= 5) - nic->adaptive_ifs -= 5; - } - if(nic->adaptive_ifs != prev) - e100_exec_cb(nic, NULL, e100_configure); - } -} - -static void e100_watchdog(unsigned long data) -{ - struct nic *nic = (struct nic *)data; - struct ethtool_cmd cmd; - - DPRINTK(TIMER, DEBUG, "right now = %ld\n", jiffies); - - /* mii library handles link maintenance tasks */ - - if (nic->ethercat) { - ecdev_set_link(nic->ecdev, mii_link_ok(&nic->mii) ? 1 : 0); - goto finish; - } - - mii_ethtool_gset(&nic->mii, &cmd); - - if(mii_link_ok(&nic->mii) && !netif_carrier_ok(nic->netdev)) { - DPRINTK(LINK, INFO, "link up, %sMbps, %s-duplex\n", - cmd.speed == SPEED_100 ? "100" : "10", - cmd.duplex == DUPLEX_FULL ? "full" : "half"); - } else if(!mii_link_ok(&nic->mii) && netif_carrier_ok(nic->netdev)) { - DPRINTK(LINK, INFO, "link down\n"); - } - - mii_check_link(&nic->mii); - - /* Software generated interrupt to recover from (rare) Rx - * allocation failure. - * Unfortunately have to use a spinlock to not re-enable interrupts - * accidentally, due to hardware that shares a register between the - * interrupt mask bit and the SW Interrupt generation bit */ - spin_lock_irq(&nic->cmd_lock); - writeb(readb(&nic->csr->scb.cmd_hi) | irq_sw_gen,&nic->csr->scb.cmd_hi); - e100_write_flush(nic); - spin_unlock_irq(&nic->cmd_lock); - - e100_update_stats(nic); - e100_adjust_adaptive_ifs(nic, cmd.speed, cmd.duplex); - - if(nic->mac <= mac_82557_D100_C) - /* Issue a multicast command to workaround a 557 lock up */ - e100_set_multicast_list(nic->netdev); - - if(nic->flags & ich && cmd.speed==SPEED_10 && cmd.duplex==DUPLEX_HALF) - /* Need SW workaround for ICH[x] 10Mbps/half duplex Tx hang. */ - nic->flags |= ich_10h_workaround; - else - nic->flags &= ~ich_10h_workaround; - -finish: - mod_timer(&nic->watchdog, jiffies + E100_WATCHDOG_PERIOD); -} - -static void e100_xmit_prepare(struct nic *nic, struct cb *cb, - struct sk_buff *skb) -{ - cb->command = nic->tx_command; - /* interrupt every 16 packets regardless of delay */ - if((nic->cbs_avail & ~15) == nic->cbs_avail) - cb->command |= cpu_to_le16(cb_i); - cb->u.tcb.tbd_array = cb->dma_addr + offsetof(struct cb, u.tcb.tbd); - cb->u.tcb.tcb_byte_count = 0; - cb->u.tcb.threshold = nic->tx_threshold; - cb->u.tcb.tbd_count = 1; - cb->u.tcb.tbd.buf_addr = cpu_to_le32(pci_map_single(nic->pdev, - skb->data, skb->len, PCI_DMA_TODEVICE)); - /* check for mapping failure? */ - cb->u.tcb.tbd.size = cpu_to_le16(skb->len); -} - -static int e100_xmit_frame(struct sk_buff *skb, struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - int err; - - if(nic->flags & ich_10h_workaround) { - /* SW workaround for ICH[x] 10Mbps/half duplex Tx hang. - Issue a NOP command followed by a 1us delay before - issuing the Tx command. */ - if(e100_exec_cmd(nic, cuc_nop, 0)) - DPRINTK(TX_ERR, DEBUG, "exec cuc_nop failed\n"); - udelay(1); - } - - err = e100_exec_cb(nic, skb, e100_xmit_prepare); - - switch(err) { - case -ENOSPC: - /* We queued the skb, but now we're out of space. */ - DPRINTK(TX_ERR, DEBUG, "No space for CB\n"); - if (!nic->ethercat) - netif_stop_queue(netdev); - break; - case -ENOMEM: - /* This is a hard error - log it. */ - DPRINTK(TX_ERR, DEBUG, "Out of Tx resources, returning skb\n"); - if (!nic->ethercat) - netif_stop_queue(netdev); - return 1; - } - - netdev->trans_start = jiffies; - return 0; -} - -static int e100_tx_clean(struct nic *nic) -{ - struct cb *cb; - int tx_cleaned = 0; - - printk(KERN_DEBUG DRV_NAME " tx_clean(%X)\n", (unsigned) nic); // FIXME - - if (!nic->cb_to_clean) { // FIXME - printk(KERN_WARNING DRV_NAME "cb_to_clean is NULL!\n"); - return 0; - } - - if (!nic->ethercat) - spin_lock(&nic->cb_lock); - - DPRINTK(TX_DONE, DEBUG, "cb->status = 0x%04X\n", - nic->cb_to_clean->status); - - /* Clean CBs marked complete */ - for(cb = nic->cb_to_clean; - cb->status & cpu_to_le16(cb_complete); - cb = nic->cb_to_clean = cb->next) { - if(likely(cb->skb != NULL)) { - nic->net_stats.tx_packets++; - nic->net_stats.tx_bytes += cb->skb->len; - - pci_unmap_single(nic->pdev, - le32_to_cpu(cb->u.tcb.tbd.buf_addr), - le16_to_cpu(cb->u.tcb.tbd.size), - PCI_DMA_TODEVICE); - if (!nic->ethercat) - dev_kfree_skb_any(cb->skb); - cb->skb = NULL; - tx_cleaned = 1; - } - cb->status = 0; - nic->cbs_avail++; - } - - if (!nic->ethercat) { - spin_unlock(&nic->cb_lock); - - /* Recover from running out of Tx resources in xmit_frame */ - if(unlikely(tx_cleaned && netif_queue_stopped(nic->netdev))) - netif_wake_queue(nic->netdev); - } - - return tx_cleaned; -} - -static void e100_clean_cbs(struct nic *nic) -{ - if(nic->cbs) { - while(nic->cbs_avail != nic->params.cbs.count) { - struct cb *cb = nic->cb_to_clean; - if(cb->skb) { - pci_unmap_single(nic->pdev, - le32_to_cpu(cb->u.tcb.tbd.buf_addr), - le16_to_cpu(cb->u.tcb.tbd.size), - PCI_DMA_TODEVICE); - dev_kfree_skb(cb->skb); - } - nic->cb_to_clean = nic->cb_to_clean->next; - nic->cbs_avail++; - } - pci_free_consistent(nic->pdev, - sizeof(struct cb) * nic->params.cbs.count, - nic->cbs, nic->cbs_dma_addr); - nic->cbs = NULL; - nic->cbs_avail = 0; - } - nic->cuc_cmd = cuc_start; - nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = - nic->cbs; -} - -static int e100_alloc_cbs(struct nic *nic) -{ - struct cb *cb; - unsigned int i, count = nic->params.cbs.count; - - nic->cuc_cmd = cuc_start; - nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = NULL; - nic->cbs_avail = 0; - - nic->cbs = pci_alloc_consistent(nic->pdev, - sizeof(struct cb) * count, &nic->cbs_dma_addr); - if(!nic->cbs) - return -ENOMEM; - - for(cb = nic->cbs, i = 0; i < count; cb++, i++) { - cb->next = (i + 1 < count) ? cb + 1 : nic->cbs; - cb->prev = (i == 0) ? nic->cbs + count - 1 : cb - 1; - - cb->dma_addr = nic->cbs_dma_addr + i * sizeof(struct cb); - cb->link = cpu_to_le32(nic->cbs_dma_addr + - ((i+1) % count) * sizeof(struct cb)); - cb->skb = NULL; - } - - nic->cb_to_use = nic->cb_to_send = nic->cb_to_clean = nic->cbs; - nic->cbs_avail = count; - - return 0; -} - -static inline void e100_start_receiver(struct nic *nic, struct rx *rx) -{ - if(!nic->rxs) return; - if(RU_SUSPENDED != nic->ru_running) return; - - /* handle init time starts */ - if(!rx) rx = nic->rxs; - - /* (Re)start RU if suspended or idle and RFA is non-NULL */ - if(rx->skb) { - e100_exec_cmd(nic, ruc_start, rx->dma_addr); - nic->ru_running = RU_RUNNING; - } -} - -#define RFD_BUF_LEN (sizeof(struct rfd) + VLAN_ETH_FRAME_LEN) -static int e100_rx_alloc_skb(struct nic *nic, struct rx *rx) -{ - if(!(rx->skb = dev_alloc_skb(RFD_BUF_LEN + NET_IP_ALIGN))) - return -ENOMEM; - - /* Align, init, and map the RFD. */ - rx->skb->dev = nic->netdev; - skb_reserve(rx->skb, NET_IP_ALIGN); - memcpy(rx->skb->data, &nic->blank_rfd, sizeof(struct rfd)); - rx->dma_addr = pci_map_single(nic->pdev, rx->skb->data, - RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL); - - if(pci_dma_mapping_error(rx->dma_addr)) { - dev_kfree_skb_any(rx->skb); - rx->skb = NULL; - rx->dma_addr = 0; - return -ENOMEM; - } - - /* Link the RFD to end of RFA by linking previous RFD to - * this one, and clearing EL bit of previous. */ - if(rx->prev->skb) { - struct rfd *prev_rfd = (struct rfd *)rx->prev->skb->data; - put_unaligned(cpu_to_le32(rx->dma_addr), - (u32 *)&prev_rfd->link); - wmb(); - prev_rfd->command &= ~cpu_to_le16(cb_el); - pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr, - sizeof(struct rfd), PCI_DMA_TODEVICE); - } - - return 0; -} - -static int e100_rx_indicate(struct nic *nic, struct rx *rx, - unsigned int *work_done, unsigned int work_to_do) -{ - struct sk_buff *skb = rx->skb; - struct rfd *rfd = (struct rfd *)skb->data; - u16 rfd_status, actual_size; - - if(unlikely(work_done && *work_done >= work_to_do)) - return -EAGAIN; - - /* Need to sync before taking a peek at cb_complete bit */ - pci_dma_sync_single_for_cpu(nic->pdev, rx->dma_addr, - sizeof(struct rfd), PCI_DMA_FROMDEVICE); - rfd_status = le16_to_cpu(rfd->status); - - DPRINTK(RX_STATUS, DEBUG, "status=0x%04X\n", rfd_status); - - /* If data isn't ready, nothing to indicate */ - if(unlikely(!(rfd_status & cb_complete))) - return -ENODATA; - - /* Get actual data size */ - actual_size = le16_to_cpu(rfd->actual_size) & 0x3FFF; - if(unlikely(actual_size > RFD_BUF_LEN - sizeof(struct rfd))) - actual_size = RFD_BUF_LEN - sizeof(struct rfd); - - /* Get data */ - pci_unmap_single(nic->pdev, rx->dma_addr, - RFD_BUF_LEN, PCI_DMA_FROMDEVICE); - - /* this allows for a fast restart without re-enabling interrupts */ - if(le16_to_cpu(rfd->command) & cb_el) - nic->ru_running = RU_SUSPENDED; - - /* Pull off the RFD and put the actual data (minus eth hdr) */ - skb_reserve(skb, sizeof(struct rfd)); - skb_put(skb, actual_size); - skb->protocol = eth_type_trans(skb, nic->netdev); - - if(unlikely(!(rfd_status & cb_ok))) { - /* Don't indicate if hardware indicates errors */ - if (!nic->ethercat) - dev_kfree_skb_any(skb); - } else if(actual_size > ETH_DATA_LEN + VLAN_ETH_HLEN) { - /* Don't indicate oversized frames */ - nic->rx_over_length_errors++; - if (!nic->ethercat) - dev_kfree_skb_any(skb); - } else { - nic->net_stats.rx_packets++; - nic->net_stats.rx_bytes += actual_size; - nic->netdev->last_rx = jiffies; - if (!nic->ethercat) - netif_receive_skb(skb); - else { - //ecdev_receive(e100_ec_dev, &rx_ring[ring_offset + 4], pkt_size); - } - if(work_done) - (*work_done)++; - } - - rx->skb = NULL; - - return 0; -} - -static void e100_rx_clean(struct nic *nic, unsigned int *work_done, - unsigned int work_to_do) -{ - struct rx *rx; - int restart_required = 0; - struct rx *rx_to_start = NULL; - - /* are we already rnr? then pay attention!!! this ensures that - * the state machine progression never allows a start with a - * partially cleaned list, avoiding a race between hardware - * and rx_to_clean when in NAPI mode */ - if(RU_SUSPENDED == nic->ru_running) - restart_required = 1; - - /* Indicate newly arrived packets */ - for(rx = nic->rx_to_clean; rx->skb; rx = nic->rx_to_clean = rx->next) { - int err = e100_rx_indicate(nic, rx, work_done, work_to_do); - if(-EAGAIN == err) { - /* hit quota so have more work to do, restart once - * cleanup is complete */ - restart_required = 0; - break; - } else if(-ENODATA == err) - break; /* No more to clean */ - } - - /* save our starting point as the place we'll restart the receiver */ - if(restart_required) - rx_to_start = nic->rx_to_clean; - - /* Alloc new skbs to refill list */ - for(rx = nic->rx_to_use; !rx->skb; rx = nic->rx_to_use = rx->next) { - if(unlikely(e100_rx_alloc_skb(nic, rx))) - break; /* Better luck next time (see watchdog) */ - } - - if(restart_required) { - // ack the rnr? - writeb(stat_ack_rnr, &nic->csr->scb.stat_ack); - e100_start_receiver(nic, rx_to_start); - if(work_done) - (*work_done)++; - } -} - -static void e100_rx_clean_list(struct nic *nic) -{ - struct rx *rx; - unsigned int i, count = nic->params.rfds.count; - - nic->ru_running = RU_UNINITIALIZED; - - if(nic->rxs) { - for(rx = nic->rxs, i = 0; i < count; rx++, i++) { - if(rx->skb) { - pci_unmap_single(nic->pdev, rx->dma_addr, - RFD_BUF_LEN, PCI_DMA_FROMDEVICE); - dev_kfree_skb(rx->skb); // FIXME - } - } - kfree(nic->rxs); - nic->rxs = NULL; - } - - nic->rx_to_use = nic->rx_to_clean = NULL; -} - -static int e100_rx_alloc_list(struct nic *nic) -{ - struct rx *rx; - unsigned int i, count = nic->params.rfds.count; - - nic->rx_to_use = nic->rx_to_clean = NULL; - nic->ru_running = RU_UNINITIALIZED; - - if(!(nic->rxs = kmalloc(sizeof(struct rx) * count, GFP_ATOMIC))) - return -ENOMEM; - memset(nic->rxs, 0, sizeof(struct rx) * count); - - for(rx = nic->rxs, i = 0; i < count; rx++, i++) { - rx->next = (i + 1 < count) ? rx + 1 : nic->rxs; - rx->prev = (i == 0) ? nic->rxs + count - 1 : rx - 1; - if(e100_rx_alloc_skb(nic, rx)) { - e100_rx_clean_list(nic); - return -ENOMEM; - } - } - - nic->rx_to_use = nic->rx_to_clean = nic->rxs; - nic->ru_running = RU_SUSPENDED; - - return 0; -} - -static irqreturn_t e100_intr(int irq, void *dev_id, struct pt_regs *regs) -{ - struct net_device *netdev = dev_id; - struct nic *nic = netdev_priv(netdev); - u8 stat_ack = readb(&nic->csr->scb.stat_ack); - - DPRINTK(INTR, DEBUG, "stat_ack = 0x%02X\n", stat_ack); - - if(stat_ack == stat_ack_not_ours || /* Not our interrupt */ - stat_ack == stat_ack_not_present) /* Hardware is ejected */ - return IRQ_NONE; - - /* Ack interrupt(s) */ - writeb(stat_ack, &nic->csr->scb.stat_ack); - - /* We hit Receive No Resource (RNR); restart RU after cleaning */ - if(stat_ack & stat_ack_rnr) - nic->ru_running = RU_SUSPENDED; - - if(!nic->ethercat && likely(netif_rx_schedule_prep(netdev))) { - e100_disable_irq(nic); - __netif_rx_schedule(netdev); - } - - return IRQ_HANDLED; -} - -void e100_ec_poll(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - static unsigned int cleaned = 0; - - cleaned += e100_tx_clean(nic); - - if (cleaned >= 1000) { - printk(KERN_INFO DRV_NAME " %u frames sent.\n", cleaned); - cleaned = 0; - } -} - -static int e100_poll(struct net_device *netdev, int *budget) -{ - struct nic *nic = netdev_priv(netdev); - unsigned int work_to_do = min(netdev->quota, *budget); - unsigned int work_done = 0; - int tx_cleaned; - - e100_rx_clean(nic, &work_done, work_to_do); - tx_cleaned = e100_tx_clean(nic); - - /* If no Rx and Tx cleanup work was done, exit polling mode. */ - if(!nic->ethercat && - ((!tx_cleaned && (work_done == 0)) || !netif_running(netdev))) { - netif_rx_complete(netdev); - e100_enable_irq(nic); - return 0; - } - - *budget -= work_done; - netdev->quota -= work_done; - - return 1; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void e100_netpoll(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - - if (nic->ethercat) - return; - - e100_disable_irq(nic); - e100_intr(nic->pdev->irq, netdev, NULL); - e100_tx_clean(nic); - e100_enable_irq(nic); -} -#endif - -static struct net_device_stats *e100_get_stats(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - return &nic->net_stats; -} - -static int e100_set_mac_address(struct net_device *netdev, void *p) -{ - struct nic *nic = 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); - e100_exec_cb(nic, NULL, e100_setup_iaaddr); - - return 0; -} - -static int e100_change_mtu(struct net_device *netdev, int new_mtu) -{ - if(new_mtu < ETH_ZLEN || new_mtu > ETH_DATA_LEN) - return -EINVAL; - netdev->mtu = new_mtu; - return 0; -} - -#ifdef CONFIG_PM -static int e100_asf(struct nic *nic) -{ - /* ASF can be enabled from eeprom */ - return((nic->pdev->device >= 0x1050) && (nic->pdev->device <= 0x1057) && - (nic->eeprom[eeprom_config_asf] & eeprom_asf) && - !(nic->eeprom[eeprom_config_asf] & eeprom_gcl) && - ((nic->eeprom[eeprom_smbus_addr] & 0xFF) != 0xFE)); -} -#endif - -static int e100_up(struct nic *nic) -{ - int err; - - if((err = e100_rx_alloc_list(nic))) - return err; - if((err = e100_alloc_cbs(nic))) - goto err_rx_clean_list; - if((err = e100_hw_init(nic))) - goto err_clean_cbs; - if (!nic->ethercat) { - e100_set_multicast_list(nic->netdev); - e100_start_receiver(nic, NULL); // FIXME - } - mod_timer(&nic->watchdog, jiffies); - if (!nic->ethercat) { - if((err = request_irq(nic->pdev->irq, e100_intr, IRQF_SHARED, - nic->netdev->name, nic->netdev))) - goto err_no_irq; - netif_wake_queue(nic->netdev); - netif_poll_enable(nic->netdev); - /* enable ints _after_ enabling poll, preventing a race between - * disable ints+schedule */ - e100_enable_irq(nic); - } - return 0; - -err_no_irq: - del_timer_sync(&nic->watchdog); -err_clean_cbs: - e100_clean_cbs(nic); -err_rx_clean_list: - e100_rx_clean_list(nic); - return err; -} - -static void e100_down(struct nic *nic) -{ - if (!nic->ethercat) { - /* wait here for poll to complete */ - netif_poll_disable(nic->netdev); - netif_stop_queue(nic->netdev); - } - e100_hw_reset(nic); - if (!nic->ethercat) - free_irq(nic->pdev->irq, nic->netdev); - del_timer_sync(&nic->watchdog); - if (!nic->ethercat) - netif_carrier_off(nic->netdev); - e100_clean_cbs(nic); - e100_rx_clean_list(nic); -} - -static void e100_tx_timeout(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - - /* Reset outside of interrupt context, to avoid request_irq - * in interrupt context */ - schedule_work(&nic->tx_timeout_task); // FIXME -} - -static void e100_tx_timeout_task(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - - DPRINTK(TX_ERR, DEBUG, "scb.status=0x%02X\n", - readb(&nic->csr->scb.status)); - e100_down(netdev_priv(netdev)); - e100_up(netdev_priv(netdev)); -} - -static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode) -{ - int err; - struct sk_buff *skb; - - /* Use driver resources to perform internal MAC or PHY - * loopback test. A single packet is prepared and transmitted - * in loopback mode, and the test passes if the received - * packet compares byte-for-byte to the transmitted packet. */ - - if((err = e100_rx_alloc_list(nic))) - return err; - if((err = e100_alloc_cbs(nic))) - goto err_clean_rx; - - /* ICH PHY loopback is broken so do MAC loopback instead */ - if(nic->flags & ich && loopback_mode == lb_phy) - loopback_mode = lb_mac; - - nic->loopback = loopback_mode; - if((err = e100_hw_init(nic))) - goto err_loopback_none; - - if(loopback_mode == lb_phy) - mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR, - BMCR_LOOPBACK); - - e100_start_receiver(nic, NULL); - - if(!(skb = dev_alloc_skb(ETH_DATA_LEN))) { - err = -ENOMEM; - goto err_loopback_none; - } - skb_put(skb, ETH_DATA_LEN); - memset(skb->data, 0xFF, ETH_DATA_LEN); - e100_xmit_frame(skb, nic->netdev); - - msleep(10); - - pci_dma_sync_single_for_cpu(nic->pdev, nic->rx_to_clean->dma_addr, - RFD_BUF_LEN, PCI_DMA_FROMDEVICE); - - if(memcmp(nic->rx_to_clean->skb->data + sizeof(struct rfd), - skb->data, ETH_DATA_LEN)) - err = -EAGAIN; - -err_loopback_none: - mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR, 0); - nic->loopback = lb_none; - e100_clean_cbs(nic); - e100_hw_reset(nic); -err_clean_rx: - e100_rx_clean_list(nic); - return err; -} - -#define MII_LED_CONTROL 0x1B -static void e100_blink_led(unsigned long data) -{ - struct nic *nic = (struct nic *)data; - enum led_state { - led_on = 0x01, - led_off = 0x04, - led_on_559 = 0x05, - led_on_557 = 0x07, - }; - - nic->leds = (nic->leds & led_on) ? led_off : - (nic->mac < mac_82559_D101M) ? led_on_557 : led_on_559; - mdio_write(nic->netdev, nic->mii.phy_id, MII_LED_CONTROL, nic->leds); - mod_timer(&nic->blink_timer, jiffies + HZ / 4); -} - -static int e100_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd) -{ - struct nic *nic = netdev_priv(netdev); - return mii_ethtool_gset(&nic->mii, cmd); -} - -static int e100_set_settings(struct net_device *netdev, struct ethtool_cmd *cmd) -{ - struct nic *nic = netdev_priv(netdev); - int err; - - mdio_write(netdev, nic->mii.phy_id, MII_BMCR, BMCR_RESET); - err = mii_ethtool_sset(&nic->mii, cmd); - e100_exec_cb(nic, NULL, e100_configure); - - return err; -} - -static void e100_get_drvinfo(struct net_device *netdev, - struct ethtool_drvinfo *info) -{ - struct nic *nic = netdev_priv(netdev); - strcpy(info->driver, DRV_NAME); - strcpy(info->version, DRV_VERSION); - strcpy(info->fw_version, "N/A"); - strcpy(info->bus_info, pci_name(nic->pdev)); -} - -static int e100_get_regs_len(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); -#define E100_PHY_REGS 0x1C -#define E100_REGS_LEN 1 + E100_PHY_REGS + \ - sizeof(nic->mem->dump_buf) / sizeof(u32) - return E100_REGS_LEN * sizeof(u32); -} - -static void e100_get_regs(struct net_device *netdev, - struct ethtool_regs *regs, void *p) -{ - struct nic *nic = netdev_priv(netdev); - u32 *buff = p; - int i; - - regs->version = (1 << 24) | nic->rev_id; - buff[0] = readb(&nic->csr->scb.cmd_hi) << 24 | - readb(&nic->csr->scb.cmd_lo) << 16 | - readw(&nic->csr->scb.status); - for(i = E100_PHY_REGS; i >= 0; i--) - buff[1 + E100_PHY_REGS - i] = - mdio_read(netdev, nic->mii.phy_id, i); - memset(nic->mem->dump_buf, 0, sizeof(nic->mem->dump_buf)); - e100_exec_cb(nic, NULL, e100_dump); - msleep(10); - memcpy(&buff[2 + E100_PHY_REGS], nic->mem->dump_buf, - sizeof(nic->mem->dump_buf)); -} - -static void e100_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) -{ - struct nic *nic = netdev_priv(netdev); - wol->supported = (nic->mac >= mac_82558_D101_A4) ? WAKE_MAGIC : 0; - wol->wolopts = (nic->flags & wol_magic) ? WAKE_MAGIC : 0; -} - -static int e100_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) -{ - struct nic *nic = netdev_priv(netdev); - - if(wol->wolopts != WAKE_MAGIC && wol->wolopts != 0) - return -EOPNOTSUPP; - - if(wol->wolopts) - nic->flags |= wol_magic; - else - nic->flags &= ~wol_magic; - - e100_exec_cb(nic, NULL, e100_configure); - - return 0; -} - -static u32 e100_get_msglevel(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - return nic->msg_enable; -} - -static void e100_set_msglevel(struct net_device *netdev, u32 value) -{ - struct nic *nic = netdev_priv(netdev); - nic->msg_enable = value; -} - -static int e100_nway_reset(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - return mii_nway_restart(&nic->mii); -} - -static u32 e100_get_link(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - return mii_link_ok(&nic->mii); -} - -static int e100_get_eeprom_len(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - return nic->eeprom_wc << 1; -} - -#define E100_EEPROM_MAGIC 0x1234 -static int e100_get_eeprom(struct net_device *netdev, - struct ethtool_eeprom *eeprom, u8 *bytes) -{ - struct nic *nic = netdev_priv(netdev); - - eeprom->magic = E100_EEPROM_MAGIC; - memcpy(bytes, &((u8 *)nic->eeprom)[eeprom->offset], eeprom->len); - - return 0; -} - -static int e100_set_eeprom(struct net_device *netdev, - struct ethtool_eeprom *eeprom, u8 *bytes) -{ - struct nic *nic = netdev_priv(netdev); - - if(eeprom->magic != E100_EEPROM_MAGIC) - return -EINVAL; - - memcpy(&((u8 *)nic->eeprom)[eeprom->offset], bytes, eeprom->len); - - return e100_eeprom_save(nic, eeprom->offset >> 1, - (eeprom->len >> 1) + 1); -} - -static void e100_get_ringparam(struct net_device *netdev, - struct ethtool_ringparam *ring) -{ - struct nic *nic = netdev_priv(netdev); - struct param_range *rfds = &nic->params.rfds; - struct param_range *cbs = &nic->params.cbs; - - ring->rx_max_pending = rfds->max; - ring->tx_max_pending = cbs->max; - ring->rx_mini_max_pending = 0; - ring->rx_jumbo_max_pending = 0; - ring->rx_pending = rfds->count; - ring->tx_pending = cbs->count; - ring->rx_mini_pending = 0; - ring->rx_jumbo_pending = 0; -} - -static int e100_set_ringparam(struct net_device *netdev, - struct ethtool_ringparam *ring) -{ - struct nic *nic = netdev_priv(netdev); - struct param_range *rfds = &nic->params.rfds; - struct param_range *cbs = &nic->params.cbs; - - if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending)) - return -EINVAL; - - if(netif_running(netdev)) - e100_down(nic); - rfds->count = max(ring->rx_pending, rfds->min); - rfds->count = min(rfds->count, rfds->max); - cbs->count = max(ring->tx_pending, cbs->min); - cbs->count = min(cbs->count, cbs->max); - DPRINTK(DRV, INFO, "Ring Param settings: rx: %d, tx %d\n", - rfds->count, cbs->count); - if(netif_running(netdev)) - e100_up(nic); - - return 0; -} - -static const char e100_gstrings_test[][ETH_GSTRING_LEN] = { - "Link test (on/offline)", - "Eeprom test (on/offline)", - "Self test (offline)", - "Mac loopback (offline)", - "Phy loopback (offline)", -}; -#define E100_TEST_LEN sizeof(e100_gstrings_test) / ETH_GSTRING_LEN - -static int e100_diag_test_count(struct net_device *netdev) -{ - return E100_TEST_LEN; -} - -static void e100_diag_test(struct net_device *netdev, - struct ethtool_test *test, u64 *data) -{ - struct ethtool_cmd cmd; - struct nic *nic = netdev_priv(netdev); - int i, err; - - memset(data, 0, E100_TEST_LEN * sizeof(u64)); - data[0] = !mii_link_ok(&nic->mii); - data[1] = e100_eeprom_load(nic); - if(test->flags & ETH_TEST_FL_OFFLINE) { - - /* save speed, duplex & autoneg settings */ - err = mii_ethtool_gset(&nic->mii, &cmd); - - if(netif_running(netdev)) - e100_down(nic); - data[2] = e100_self_test(nic); - data[3] = e100_loopback_test(nic, lb_mac); - data[4] = e100_loopback_test(nic, lb_phy); - - /* restore speed, duplex & autoneg settings */ - err = mii_ethtool_sset(&nic->mii, &cmd); - - if(netif_running(netdev)) - e100_up(nic); - } - for(i = 0; i < E100_TEST_LEN; i++) - test->flags |= data[i] ? ETH_TEST_FL_FAILED : 0; - - msleep_interruptible(4 * 1000); -} - -static int e100_phys_id(struct net_device *netdev, u32 data) -{ - struct nic *nic = netdev_priv(netdev); - - if(!data || data > (u32)(MAX_SCHEDULE_TIMEOUT / HZ)) - data = (u32)(MAX_SCHEDULE_TIMEOUT / HZ); - mod_timer(&nic->blink_timer, jiffies); - msleep_interruptible(data * 1000); - del_timer_sync(&nic->blink_timer); - mdio_write(netdev, nic->mii.phy_id, MII_LED_CONTROL, 0); - - return 0; -} - -static const char e100_gstrings_stats[][ETH_GSTRING_LEN] = { - "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors", - "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions", - "rx_length_errors", "rx_over_errors", "rx_crc_errors", - "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors", - "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors", - "tx_heartbeat_errors", "tx_window_errors", - /* device-specific stats */ - "tx_deferred", "tx_single_collisions", "tx_multi_collisions", - "tx_flow_control_pause", "rx_flow_control_pause", - "rx_flow_control_unsupported", "tx_tco_packets", "rx_tco_packets", -}; -#define E100_NET_STATS_LEN 21 -#define E100_STATS_LEN sizeof(e100_gstrings_stats) / ETH_GSTRING_LEN - -static int e100_get_stats_count(struct net_device *netdev) -{ - return E100_STATS_LEN; -} - -static void e100_get_ethtool_stats(struct net_device *netdev, - struct ethtool_stats *stats, u64 *data) -{ - struct nic *nic = netdev_priv(netdev); - int i; - - for(i = 0; i < E100_NET_STATS_LEN; i++) - data[i] = ((unsigned long *)&nic->net_stats)[i]; - - data[i++] = nic->tx_deferred; - data[i++] = nic->tx_single_collisions; - data[i++] = nic->tx_multiple_collisions; - data[i++] = nic->tx_fc_pause; - data[i++] = nic->rx_fc_pause; - data[i++] = nic->rx_fc_unsupported; - data[i++] = nic->tx_tco_frames; - data[i++] = nic->rx_tco_frames; -} - -static void e100_get_strings(struct net_device *netdev, u32 stringset, u8 *data) -{ - switch(stringset) { - case ETH_SS_TEST: - memcpy(data, *e100_gstrings_test, sizeof(e100_gstrings_test)); - break; - case ETH_SS_STATS: - memcpy(data, *e100_gstrings_stats, sizeof(e100_gstrings_stats)); - break; - } -} - -static struct ethtool_ops e100_ethtool_ops = { - .get_settings = e100_get_settings, - .set_settings = e100_set_settings, - .get_drvinfo = e100_get_drvinfo, - .get_regs_len = e100_get_regs_len, - .get_regs = e100_get_regs, - .get_wol = e100_get_wol, - .set_wol = e100_set_wol, - .get_msglevel = e100_get_msglevel, - .set_msglevel = e100_set_msglevel, - .nway_reset = e100_nway_reset, - .get_link = e100_get_link, - .get_eeprom_len = e100_get_eeprom_len, - .get_eeprom = e100_get_eeprom, - .set_eeprom = e100_set_eeprom, - .get_ringparam = e100_get_ringparam, - .set_ringparam = e100_set_ringparam, - .self_test_count = e100_diag_test_count, - .self_test = e100_diag_test, - .get_strings = e100_get_strings, - .phys_id = e100_phys_id, - .get_stats_count = e100_get_stats_count, - .get_ethtool_stats = e100_get_ethtool_stats, - .get_perm_addr = ethtool_op_get_perm_addr, -}; - -static int e100_do_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) -{ - struct nic *nic = netdev_priv(netdev); - - return generic_mii_ioctl(&nic->mii, if_mii(ifr), cmd, NULL); -} - -static int e100_alloc(struct nic *nic) -{ - nic->mem = pci_alloc_consistent(nic->pdev, sizeof(struct mem), - &nic->dma_addr); - return nic->mem ? 0 : -ENOMEM; -} - -static void e100_free(struct nic *nic) -{ - if(nic->mem) { - pci_free_consistent(nic->pdev, sizeof(struct mem), - nic->mem, nic->dma_addr); - nic->mem = NULL; - } -} - -static int e100_open(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - int err = 0; - - if (!nic->ethercat) - netif_carrier_off(netdev); - if((err = e100_up(nic))) - DPRINTK(IFUP, ERR, "Cannot open interface, aborting.\n"); - return err; -} - -static int e100_close(struct net_device *netdev) -{ - e100_down(netdev_priv(netdev)); - return 0; -} - -static int __devinit e100_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct net_device *netdev; - struct nic *nic; - int err; - - if(!(netdev = alloc_etherdev(sizeof(struct nic)))) { - if(((1 << debug) - 1) & NETIF_MSG_PROBE) - printk(KERN_ERR PFX "Etherdev alloc failed, abort.\n"); - return -ENOMEM; - } - - netdev->open = e100_open; - netdev->stop = e100_close; - netdev->hard_start_xmit = e100_xmit_frame; - netdev->get_stats = e100_get_stats; - netdev->set_multicast_list = e100_set_multicast_list; - netdev->set_mac_address = e100_set_mac_address; - netdev->change_mtu = e100_change_mtu; - netdev->do_ioctl = e100_do_ioctl; - SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops); - netdev->tx_timeout = e100_tx_timeout; - netdev->watchdog_timeo = E100_WATCHDOG_PERIOD; - netdev->poll = e100_poll; - netdev->weight = E100_NAPI_WEIGHT; -#ifdef CONFIG_NET_POLL_CONTROLLER - netdev->poll_controller = e100_netpoll; -#endif - strcpy(netdev->name, pci_name(pdev)); - - nic = netdev_priv(netdev); - nic->netdev = netdev; - nic->pdev = pdev; - nic->msg_enable = (1 << debug) - 1; - pci_set_drvdata(pdev, netdev); - - if (e100_device_index++ == ec_device_index) { - nic->ethercat = 1; - e100_ec_netdev = netdev; - } - else { - nic->ethercat = 0; - } - nic->ecdev = NULL; - - if((err = pci_enable_device(pdev))) { - DPRINTK(PROBE, ERR, "Cannot enable PCI device, aborting.\n"); - goto err_out_free_dev; - } - - if(!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { - DPRINTK(PROBE, ERR, "Cannot find proper PCI device " - "base address, aborting.\n"); - err = -ENODEV; - goto err_out_disable_pdev; - } - - if((err = pci_request_regions(pdev, DRV_NAME))) { - DPRINTK(PROBE, ERR, "Cannot obtain PCI resources, aborting.\n"); - goto err_out_disable_pdev; - } - - if((err = pci_set_dma_mask(pdev, DMA_32BIT_MASK))) { - DPRINTK(PROBE, ERR, "No usable DMA configuration, aborting.\n"); - goto err_out_free_res; - } - - SET_MODULE_OWNER(netdev); - SET_NETDEV_DEV(netdev, &pdev->dev); - - nic->csr = ioremap(pci_resource_start(pdev, 0), sizeof(struct csr)); - if(!nic->csr) { - DPRINTK(PROBE, ERR, "Cannot map device registers, aborting.\n"); - err = -ENOMEM; - goto err_out_free_res; - } - - if(ent->driver_data) - nic->flags |= ich; - else - nic->flags &= ~ich; - - e100_get_defaults(nic); - - /* locks must be initialized before calling hw_reset */ - spin_lock_init(&nic->cb_lock); - spin_lock_init(&nic->cmd_lock); - spin_lock_init(&nic->mdio_lock); - - /* Reset the device before pci_set_master() in case device is in some - * funky state and has an interrupt pending - hint: we don't have the - * interrupt handler registered yet. */ - e100_hw_reset(nic); - - pci_set_master(pdev); - - init_timer(&nic->watchdog); - nic->watchdog.function = e100_watchdog; - nic->watchdog.data = (unsigned long)nic; - init_timer(&nic->blink_timer); - nic->blink_timer.function = e100_blink_led; - nic->blink_timer.data = (unsigned long)nic; - - INIT_WORK(&nic->tx_timeout_task, - (void (*)(void *))e100_tx_timeout_task, netdev); - - if((err = e100_alloc(nic))) { - DPRINTK(PROBE, ERR, "Cannot alloc driver memory, aborting.\n"); - goto err_out_iounmap; - } - - if((err = e100_eeprom_load(nic))) - goto err_out_free; - - e100_phy_init(nic); - - memcpy(netdev->dev_addr, nic->eeprom, ETH_ALEN); - memcpy(netdev->perm_addr, nic->eeprom, ETH_ALEN); - if(!is_valid_ether_addr(netdev->perm_addr)) { - DPRINTK(PROBE, ERR, "Invalid MAC address from " - "EEPROM, aborting.\n"); - err = -EAGAIN; - goto err_out_free; - } - - /* Wol magic packet can be enabled from eeprom */ - if((nic->mac >= mac_82558_D101_A4) && - (nic->eeprom[eeprom_id] & eeprom_id_wol)) - nic->flags |= wol_magic; - - /* ack any pending wake events, disable PME */ - err = pci_enable_wake(pdev, 0, 0); - if (err) - DPRINTK(PROBE, ERR, "Error clearing wake event\n"); - - if (!nic->ethercat) { - strcpy(netdev->name, "eth%d"); - if((err = register_netdev(netdev))) { - DPRINTK(PROBE, ERR, "Cannot register net device, aborting.\n"); - goto err_out_free; - } - } - else { - strcpy(netdev->name, "ec0"); - } - - DPRINTK(PROBE, INFO, "addr 0x%llx, irq %d, " - "MAC addr %02X:%02X:%02X:%02X:%02X:%02X\n", - (unsigned long long)pci_resource_start(pdev, 0), pdev->irq, - netdev->dev_addr[0], netdev->dev_addr[1], netdev->dev_addr[2], - netdev->dev_addr[3], netdev->dev_addr[4], netdev->dev_addr[5]); - - return 0; - -err_out_free: - e100_free(nic); -err_out_iounmap: - iounmap(nic->csr); -err_out_free_res: - pci_release_regions(pdev); -err_out_disable_pdev: - pci_disable_device(pdev); -err_out_free_dev: - pci_set_drvdata(pdev, NULL); - free_netdev(netdev); - return err; -} - -static void __devexit e100_remove(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - - if(netdev) { - struct nic *nic = netdev_priv(netdev); - if (!nic->ethercat) - unregister_netdev(netdev); - e100_free(nic); - iounmap(nic->csr); - free_netdev(netdev); - pci_release_regions(pdev); - pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); - } -} - -#ifdef CONFIG_PM -static int e100_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct nic *nic = netdev_priv(netdev); - int retval; - - if (nic->ethercat || netif_running(netdev)) - e100_down(nic); - e100_hw_reset(nic); - if (!nic->ethercat) - netif_device_detach(netdev); - - pci_save_state(pdev); - retval = pci_enable_wake(pdev, pci_choose_state(pdev, state), - nic->flags & (wol_magic | e100_asf(nic))); - if (retval) - DPRINTK(PROBE,ERR, "Error enabling wake\n"); - pci_disable_device(pdev); - retval = pci_set_power_state(pdev, pci_choose_state(pdev, state)); - if (retval) - DPRINTK(PROBE,ERR, "Error %d setting power state\n", retval); - - return 0; -} - -static int e100_resume(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct nic *nic = netdev_priv(netdev); - int retval; - - retval = pci_set_power_state(pdev, PCI_D0); - if (retval) - DPRINTK(PROBE,ERR, "Error waking adapter\n"); - pci_restore_state(pdev); - /* ack any pending wake events, disable PME */ - retval = pci_enable_wake(pdev, 0, 0); - if (retval) - DPRINTK(PROBE,ERR, "Error clearing wake events\n"); - - if (!nic->ethercat) - netif_device_attach(netdev); - if (nic->ethercat || netif_running(netdev)) - e100_up(nic); - - return 0; -} -#endif - - -static void e100_shutdown(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct nic *nic = netdev_priv(netdev); - int retval; - -#ifdef CONFIG_PM - retval = pci_enable_wake(pdev, 0, nic->flags & (wol_magic | e100_asf(nic))); -#else - retval = pci_enable_wake(pdev, 0, nic->flags & (wol_magic)); -#endif - if (retval) - DPRINTK(PROBE,ERR, "Error enabling wake\n"); -} - -/* ------------------ PCI Error Recovery infrastructure -------------- */ -/** - * e100_io_error_detected - called when PCI error is detected. - * @pdev: Pointer to PCI device - * @state: The current pci conneection state - */ -static pci_ers_result_t e100_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct nic *nic = netdev_priv(netdev); - - /* Similar to calling e100_down(), but avoids adpater I/O. */ - netdev->stop(netdev); - - if (!nic->ethercat) { - /* Detach; put netif into state similar to hotplug unplug. */ - netif_poll_enable(netdev); - netif_device_detach(netdev); - } - - /* Request a slot reset. */ - return PCI_ERS_RESULT_NEED_RESET; -} - -/** - * e100_io_slot_reset - called after the pci bus has been reset. - * @pdev: Pointer to PCI device - * - * Restart the card from scratch. - */ -static pci_ers_result_t e100_io_slot_reset(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct nic *nic = netdev_priv(netdev); - - if (pci_enable_device(pdev)) { - printk(KERN_ERR "e100: Cannot re-enable PCI device after reset.\n"); - return PCI_ERS_RESULT_DISCONNECT; - } - pci_set_master(pdev); - - /* Only one device per card can do a reset */ - if (0 != PCI_FUNC(pdev->devfn)) - return PCI_ERS_RESULT_RECOVERED; - e100_hw_reset(nic); - e100_phy_init(nic); - - return PCI_ERS_RESULT_RECOVERED; -} - -/** - * e100_io_resume - resume normal operations - * @pdev: Pointer to PCI device - * - * Resume normal operations after an error recovery - * sequence has been completed. - */ -static void e100_io_resume(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct nic *nic = netdev_priv(netdev); - - /* ack any pending wake events, disable PME */ - pci_enable_wake(pdev, 0, 0); - - if (!nic->ethercat) - netif_device_attach(netdev); - if (nic->ethercat || netif_running(netdev)) { - e100_open(netdev); - mod_timer(&nic->watchdog, jiffies); - } -} - -static struct pci_error_handlers e100_err_handler = { - .error_detected = e100_io_error_detected, - .slot_reset = e100_io_slot_reset, - .resume = e100_io_resume, -}; - -static struct pci_driver e100_driver = { - .name = DRV_NAME, - .id_table = e100_id_table, - .probe = e100_probe, - .remove = __devexit_p(e100_remove), -#ifdef CONFIG_PM - .suspend = e100_suspend, - .resume = e100_resume, -#endif - .shutdown = e100_shutdown, - .err_handler = &e100_err_handler, -}; - -static int __init e100_init_module(void) -{ - struct nic *nic; - - printk(KERN_INFO DRV_NAME " " DRV_DESCRIPTION " " DRV_VERSION - ", master " EC_MASTER_VERSION "\n"); - printk(KERN_INFO DRV_NAME " ec_device_index is %i\n", ec_device_index); - - if (pci_module_init(&e100_driver) < 0) { - printk(KERN_ERR DRV_NAME " Failed to init PCI module.\n"); - goto out_return; - } - - if (e100_ec_netdev) { - nic = netdev_priv(e100_ec_netdev); - printk(KERN_INFO DRV_NAME " Registering EtherCAT device...\n"); - if (!(nic->ecdev = ecdev_register(ec_device_master_index, - e100_ec_netdev, e100_ec_poll, THIS_MODULE))) { - printk(KERN_ERR DRV_NAME " Failed to register EtherCAT device!\n"); - goto out_pci; - } - printk(KERN_INFO DRV_NAME " Opening EtherCAT device...\n"); - if (ecdev_open(nic->ecdev)) { - printk(KERN_ERR DRV_NAME " Failed to open EtherCAT device!\n"); - goto out_unregister; - } - - printk(KERN_INFO DRV_NAME " EtherCAT device ready.\n"); - } else { - printk(KERN_WARNING DRV_NAME " No EtherCAT device registered!\n"); - } - - return 0; - -out_unregister: - printk(KERN_INFO DRV_NAME " Unregistering EtherCAT device...\n"); - ecdev_unregister(ec_device_master_index, nic->ecdev); -out_pci: - pci_unregister_driver(&e100_driver); -out_return: - return -1; -} - -static void __exit e100_cleanup_module(void) -{ - printk(KERN_INFO DRV_NAME " Cleaning up module...\n"); - - if (e100_ec_netdev) { - struct nic *nic = netdev_priv(e100_ec_netdev); - printk(KERN_INFO DRV_NAME " Closing EtherCAT device...\n"); - ecdev_close(nic->ecdev); - printk(KERN_INFO DRV_NAME " Unregistering EtherCAT device...\n"); - ecdev_unregister(ec_device_master_index, nic->ecdev); - } - - pci_unregister_driver(&e100_driver); - - printk(KERN_INFO DRV_NAME " module cleaned up.\n"); -} - -module_init(e100_init_module); -module_exit(e100_cleanup_module);