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>

1 files changed, 3109 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/e100.c b/drivers/net/ethernet/intel/e100.c
new file mode 100644
index 000000000000..c1352c60c299
--- /dev/null
+++ b/drivers/net/ethernet/intel/e100.c
@@ -0,0 +1,3109 @@
+/*******************************************************************************
+
+  Intel PRO/100 Linux driver
+  Copyright(c) 1999 - 2006 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
+
+*******************************************************************************/
+
+/*
+ *	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.  Receive
+ *
+ *	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.
+ *
+ *	In order to keep updates to the RFD link field from colliding with
+ *	hardware writes to mark packets complete, we use the feature that
+ *	hardware will not write to a size 0 descriptor and mark the previous
+ *	packet as end-of-list (EL).   After updating the link, we remove EL
+ *	and only then restore the size such that hardware may use the
+ *	previous-to-end RFD.
+ *
+ *	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
+ *	scenario 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 <Michael.ODonnell at stratus dot com>
+ *	- Stratus87247: protect MDI control register manipulations
+ * 2009/06/01 - Andreas Mohr <andi at lisas dot de>
+ *      - add clean lowlevel I/O emulation for cards with MII-lacking PHYs
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/hardirq.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmapool.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/mii.h>
+#include <linux/if_vlan.h>
+#include <linux/skbuff.h>
+#include <linux/ethtool.h>
+#include <linux/string.h>
+#include <linux/firmware.h>
+#include <linux/rtnetlink.h>
+#include <asm/unaligned.h>
+
+
+#define DRV_NAME		"e100"
+#define DRV_EXT			"-NAPI"
+#define DRV_VERSION		"3.5.24-k2"DRV_EXT
+#define DRV_DESCRIPTION		"Intel(R) PRO/100 Network Driver"
+#define DRV_COPYRIGHT		"Copyright(c) 1999-2006 Intel Corporation"
+
+#define E100_WATCHDOG_PERIOD	(2 * HZ)
+#define E100_NAPI_WEIGHT	16
+
+#define FIRMWARE_D101M		"e100/d101m_ucode.bin"
+#define FIRMWARE_D101S		"e100/d101s_ucode.bin"
+#define FIRMWARE_D102E		"e100/d102e_ucode.bin"
+
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_AUTHOR(DRV_COPYRIGHT);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRV_VERSION);
+MODULE_FIRMWARE(FIRMWARE_D101M);
+MODULE_FIRMWARE(FIRMWARE_D101S);
+MODULE_FIRMWARE(FIRMWARE_D102E);
+
+static int debug = 3;
+static int eeprom_bad_csum_allow = 0;
+static int use_io = 0;
+module_param(debug, int, 0);
+module_param(eeprom_bad_csum_allow, int, 0);
+module_param(use_io, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
+MODULE_PARM_DESC(eeprom_bad_csum_allow, "Allow bad eeprom checksums");
+MODULE_PARM_DESC(use_io, "Force use of i/o access mode");
+
+#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 DEFINE_PCI_DEVICE_TABLE(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(0x10fe, 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, }
+};
+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_82552_v  = 0xd061004d,
+	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_no_res       = 0x08,
+	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_phy_iface  = 0x06,
+	eeprom_id         = 0x0A,
+	eeprom_config_asf = 0x0D,
+	eeprom_smbus_addr = 0x90,
+};
+
+enum eeprom_cnfg_mdix {
+	eeprom_mdix_enabled = 0x0080,
+};
+
+enum eeprom_phy_iface {
+	NoSuchPhy = 0,
+	I82553AB,
+	I82553C,
+	I82503,
+	DP83840,
+	S80C240,
+	S80C24,
+	I82555,
+	DP83840A = 10,
+};
+
+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 {
+	__le16 status;
+	__le16 command;
+	__le32 link;
+	__le32 rbd;
+	__le16 actual_size;
+	__le16 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 {
+	__le16 count;
+	u8 addr[E100_MAX_MULTICAST_ADDRS * ETH_ALEN + 2/*pad*/];
+};
+
+/* Important: keep total struct u32-aligned */
+#define UCODE_SIZE			134
+struct cb {
+	__le16 status;
+	__le16 command;
+	__le32 link;
+	union {
+		u8 iaaddr[ETH_ALEN];
+		__le32 ucode[UCODE_SIZE];
+		struct config config;
+		struct multi multi;
+		struct {
+			u32 tbd_array;
+			u16 tcb_byte_count;
+			u8 threshold;
+			u8 tbd_count;
+			struct {
+				__le32 buf_addr;
+				__le16 size;
+				u16 eol;
+			} tbd;
+		} tcb;
+		__le32 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 {
+	__le32 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;
+	__le32 rx_good_frames, rx_crc_errors, rx_alignment_errors,
+		rx_resource_errors, rx_overrun_errors, rx_cdt_errors,
+		rx_short_frame_errors;
+	__le32 fc_xmt_pause, fc_rcv_pause, fc_rcv_unsupported;
+	__le16 xmt_tco_frames, rcv_tco_frames;
+	__le32 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;
+	u16 (*mdio_ctrl)(struct nic *nic, u32 addr, u32 dir, u32 reg, u16 data);
+
+	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 napi_struct napi;
+	struct cb *cbs;
+	struct cb *cb_to_use;
+	struct cb *cb_to_send;
+	struct cb *cb_to_clean;
+	__le16 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 timer_list watchdog;
+	struct mii_if_info mii;
+	struct work_struct tx_timeout_task;
+	enum loopback loopback;
+
+	struct mem *mem;
+	dma_addr_t dma_addr;
+
+	struct pci_pool *cbs_pool;
+	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;
+
+	u16 eeprom_wc;
+	__le16 eeprom[256];
+	spinlock_t mdio_lock;
+	const struct firmware *fw;
+};
+
+static inline void e100_write_flush(struct nic *nic)
+{
+	/* Flush previous PCI writes through intermediate bridges
+	 * by doing a benign read */
+	(void)ioread8(&nic->csr->scb.status);
+}
+
+static void e100_enable_irq(struct nic *nic)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&nic->cmd_lock, flags);
+	iowrite8(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);
+	iowrite8(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 */
+	iowrite32(selective_reset, &nic->csr->port);
+	e100_write_flush(nic); udelay(20);
+
+	/* Now fully reset device */
+	iowrite32(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;
+
+	iowrite32(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) {
+		netif_err(nic, hw, nic->netdev,
+			  "Self-test failed: result=0x%08X\n",
+			  nic->mem->selftest.result);
+		return -ETIMEDOUT;
+	}
+	if (nic->mem->selftest.signature == 0) {
+		netif_err(nic, hw, nic->netdev, "Self-test failed: timed out\n");
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+
+static void e100_eeprom_write(struct nic *nic, u16 addr_len, u16 addr, __le16 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) |
+		le16_to_cpu(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 */
+		iowrite8(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;
+			iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
+			e100_write_flush(nic); udelay(4);
+
+			iowrite8(ctrl | eesk, &nic->csr->eeprom_ctrl_lo);
+			e100_write_flush(nic); udelay(4);
+		}
+		/* Wait 10 msec for cmd to complete */
+		msleep(10);
+
+		/* Chip deselect */
+		iowrite8(0, &nic->csr->eeprom_ctrl_lo);
+		e100_write_flush(nic); udelay(4);
+	}
+};
+
+/* General technique stolen from the eepro100 driver - very clever */
+static __le16 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 */
+	iowrite8(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;
+		iowrite8(ctrl, &nic->csr->eeprom_ctrl_lo);
+		e100_write_flush(nic); udelay(4);
+
+		iowrite8(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 = ioread8(&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 */
+	iowrite8(0, &nic->csr->eeprom_ctrl_lo);
+	e100_write_flush(nic); udelay(4);
+
+	return cpu_to_le16(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 += le16_to_cpu(nic->eeprom[addr]);
+	}
+
+	/* The checksum, stored in the last word, is calculated such that
+	 * the sum of words should be 0xBABA */
+	if (cpu_to_le16(0xBABA - checksum) != nic->eeprom[nic->eeprom_wc - 1]) {
+		netif_err(nic, probe, nic->netdev, "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 += le16_to_cpu(nic->eeprom[addr]);
+	nic->eeprom[nic->eeprom_wc - 1] = cpu_to_le16(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;
+	unsigned int i;
+	int err = 0;
+
+	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(!ioread8(&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))
+		iowrite32(dma_addr, &nic->csr->scb.gen_ptr);
+	iowrite8(cmd, &nic->csr->scb.cmd_lo);
+
+err_unlock:
+	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;
+	int err = 0;
+
+	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
+				schedule_work(&nic->tx_timeout_task);
+			}
+			break;
+		} else {
+			nic->cuc_cmd = cuc_resume;
+			nic->cb_to_send = nic->cb_to_send->next;
+		}
+	}
+
+err_unlock:
+	spin_unlock_irqrestore(&nic->cb_lock, flags);
+
+	return err;
+}
+
+static int mdio_read(struct net_device *netdev, int addr, int reg)
+{
+	struct nic *nic = netdev_priv(netdev);
+	return nic->mdio_ctrl(nic, addr, mdi_read, reg, 0);
+}
+
+static void mdio_write(struct net_device *netdev, int addr, int reg, int data)
+{
+	struct nic *nic = netdev_priv(netdev);
+
+	nic->mdio_ctrl(nic, addr, mdi_write, reg, data);
+}
+
+/* the standard mdio_ctrl() function for usual MII-compliant hardware */
+static u16 mdio_ctrl_hw(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 (ioread32(&nic->csr->mdi_ctrl) & mdi_ready)
+			break;
+		udelay(20);
+	}
+	if (unlikely(!i)) {
+		netdev_err(nic->netdev, "e100.mdio_ctrl won't go Ready\n");
+		spin_unlock_irqrestore(&nic->mdio_lock, flags);
+		return 0;		/* No way to indicate timeout error */
+	}
+	iowrite32((reg << 16) | (addr << 21) | dir | data, &nic->csr->mdi_ctrl);
+
+	for (i = 0; i < 100; i++) {
+		udelay(20);
+		if ((data_out = ioread32(&nic->csr->mdi_ctrl)) & mdi_ready)
+			break;
+	}
+	spin_unlock_irqrestore(&nic->mdio_lock, flags);
+	netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
+		     "%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;
+}
+
+/* slightly tweaked mdio_ctrl() function for phy_82552_v specifics */
+static u16 mdio_ctrl_phy_82552_v(struct nic *nic,
+				 u32 addr,
+				 u32 dir,
+				 u32 reg,
+				 u16 data)
+{
+	if ((reg == MII_BMCR) && (dir == mdi_write)) {
+		if (data & (BMCR_ANRESTART | BMCR_ANENABLE)) {
+			u16 advert = mdio_read(nic->netdev, nic->mii.phy_id,
+							MII_ADVERTISE);
+
+			/*
+			 * Workaround Si issue where sometimes the part will not
+			 * autoneg to 100Mbps even when advertised.
+			 */
+			if (advert & ADVERTISE_100FULL)
+				data |= BMCR_SPEED100 | BMCR_FULLDPLX;
+			else if (advert & ADVERTISE_100HALF)
+				data |= BMCR_SPEED100;
+		}
+	}
+	return mdio_ctrl_hw(nic, addr, dir, reg, data);
+}
+
+/* Fully software-emulated mdio_ctrl() function for cards without
+ * MII-compliant PHYs.
+ * For now, this is mainly geared towards 80c24 support; in case of further
+ * requirements for other types (i82503, ...?) either extend this mechanism
+ * or split it, whichever is cleaner.
+ */
+static u16 mdio_ctrl_phy_mii_emulated(struct nic *nic,
+				      u32 addr,
+				      u32 dir,
+				      u32 reg,
+				      u16 data)
+{
+	/* might need to allocate a netdev_priv'ed register array eventually
+	 * to be able to record state changes, but for now
+	 * some fully hardcoded register handling ought to be ok I guess. */
+
+	if (dir == mdi_read) {
+		switch (reg) {
+		case MII_BMCR:
+			/* Auto-negotiation, right? */
+			return  BMCR_ANENABLE |
+				BMCR_FULLDPLX;
+		case MII_BMSR:
+			return	BMSR_LSTATUS /* for mii_link_ok() */ |
+				BMSR_ANEGCAPABLE |
+				BMSR_10FULL;
+		case MII_ADVERTISE:
+			/* 80c24 is a "combo card" PHY, right? */
+			return	ADVERTISE_10HALF |
+				ADVERTISE_10FULL;
+		default:
+			netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
+				     "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
+				     dir == mdi_read ? "READ" : "WRITE",
+				     addr, reg, data);
+			return 0xFFFF;
+		}
+	} else {
+		switch (reg) {
+		default:
+			netif_printk(nic, hw, KERN_DEBUG, nic->netdev,
+				     "%s:addr=%d, reg=%d, data=0x%04X: unimplemented emulation!\n",
+				     dir == mdi_read ? "READ" : "WRITE",
+				     addr, reg, data);
+			return 0xFFFF;
+		}
+	}
+}
+static inline int e100_phy_supports_mii(struct nic *nic)
+{
+	/* for now, just check it by comparing whether we
+	   are using MII software emulation.
+	*/
+	return (nic->mdio_ctrl != mdio_ctrl_phy_mii_emulated);
+}
+
+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 };
+
+	/* MAC type is encoded as rev ID; exception: ICH is treated as 82559 */
+	nic->mac = (nic->flags & ich) ? mac_82559_D101M : nic->pdev->revision;
+	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 = 0;
+	nic->blank_rfd.rbd = cpu_to_le32(0xFFFFFFFF);
+	nic->blank_rfd.size = cpu_to_le16(VLAN_ETH_FRAME_LEN);
+
+	/* MII setup */
+	nic->mii.phy_id_mask = 0x1F;
+	nic->mii.