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Diffstat (limited to 'drivers/net/e100.c')
| -rw-r--r-- | drivers/net/e100.c | 3109 |
1 files changed, 0 insertions, 3109 deletions
diff --git a/drivers/net/e100.c b/drivers/net/e100.c deleted file mode 100644 index c1352c60c299..000000000000 --- a/drivers/net/e100.c +++ /dev/null @@ -1,3109 +0,0 @@ -/******************************************************************************* - - 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.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 */ - if (e100_phy_supports_mii(nic)) - config->mii_mode = 1; /* 1=MII mode, 0=i82503 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 (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 */ - /* Enable TCO in extended config */ - if (nic->mac >= mac_82551_10) { - config->byte_count = 0x20; /* extended bytes */ - config->rx_d102_mode = 0x1; /* GMRC for TCO */ - } - } else { - config->standard_stat_counter = 0x0; - } - } - - netif_printk(nic, hw, KERN_DEBUG, nic->netdev, - "[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]); - netif_printk(nic, hw, KERN_DEBUG, nic->netdev, - "[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]); - netif_printk(nic, hw, KERN_DEBUG, nic->netdev, - "[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]); -} - -/************************************************************************* -* 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 initial 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 */ - -/* Initialize firmware */ -static const struct firmware *e100_request_firmware(struct nic *nic) -{ - const char *fw_name; - const struct firmware *fw = nic->fw; - u8 timer, bundle, min_size; - int err = 0; - - /* do not load u-code for ICH devices */ - if (nic->flags & ich) - return NULL; - - /* Search for ucode match against h/w revision */ - if (nic->mac == mac_82559_D101M) - fw_name = FIRMWARE_D101M; - else if (nic->mac == mac_82559_D101S) - fw_name = FIRMWARE_D101S; - else if (nic->mac == mac_82551_F || nic->mac == mac_82551_10) - fw_name = FIRMWARE_D102E; - else /* No ucode on other devices */ - return NULL; - - /* If the firmware has not previously been loaded, request a pointer - * to it. If it was previously loaded, we are reinitializing the - * adapter, possibly in a resume from hibernate, in which case - * request_firmware() cannot be used. - */ - if (!fw) - err = request_firmware(&fw, fw_name, &nic->pdev->dev); - - if (err) { - netif_err(nic, probe, nic->netdev, - "Failed to load firmware \"%s\": %d\n", - fw_name, err); - return ERR_PTR(err); - } - - /* Firmware should be precisely UCODE_SIZE (words) plus three bytes - indicating the offsets for BUNDLESMALL, BUNDLEMAX, INTDELAY */ - if (fw->size != UCODE_SIZE * 4 + 3) { - netif_err(nic, probe, nic->netdev, - "Firmware \"%s\" has wrong size %zu\n", - fw_name, fw->size); - release_firmware(fw); - return ERR_PTR(-EINVAL); - } - - /* Read timer, bundle and min_size from end of firmware blob */ - timer = fw->data[UCODE_SIZE * 4]; - bundle = fw->data[UCODE_SIZE * 4 + 1]; - min_size = fw->data[UCODE_SIZE * 4 + 2]; - - if (timer >= UCODE_SIZE || bundle >= UCODE_SIZE || - min_size >= UCODE_SIZE) { - netif_err(nic, probe, nic->netdev, - "\"%s\" has bogus offset values (0x%x,0x%x,0x%x)\n", - fw_name, timer, bundle, min_size); - release_firmware(fw); - return ERR_PTR(-EINVAL); - } - - /* OK, firmware is validated and ready to use. Save a pointer - * to it in the nic */ - nic->fw = fw; - return fw; -} - -static void e100_setup_ucode(struct nic *nic, struct cb *cb, - struct sk_buff *skb) -{ - const struct firmware *fw = (void *)skb; - u8 timer, bundle, min_size; - - /* It's not a real skb; we just abused the fact that e100_exec_cb - will pass it through to here... */ - cb->skb = NULL; - - /* firmware is stored as little endian already */ - memcpy(cb->u.ucode, fw->data, UCODE_SIZE * 4); - - /* Read timer, bundle and min_size from end of firmware blob */ - timer = fw->data[UCODE_SIZE * 4]; - bundle = fw->data[UCODE_SIZE * 4 + 1]; - min_size = fw->data[UCODE_SIZE * 4 + 2]; - - /* Insert user-tunable settings in cb->u.ucode */ - cb->u.ucode[timer] &= cpu_to_le32(0xFFFF0000); - cb->u.ucode[timer] |= cpu_to_le32(INTDELAY); - cb->u.ucode[bundle] &= cpu_to_le32(0xFFFF0000); - cb->u.ucode[bundle] |= cpu_to_le32(BUNDLEMAX); - cb->u.ucode[min_size] &= cpu_to_le32(0xFFFF0000); - cb->u.ucode[min_size] |= cpu_to_le32((BUNDLESMALL) ? 0xFFFF : 0xFF80); - - cb->command = cpu_to_le16(cb_ucode | cb_el); -} - -static inline int e100_load_ucode_wait(struct nic *nic) -{ - const struct firmware *fw; - int err = 0, counter = 50; - struct cb *cb = nic->cb_to_clean; - - fw = e100_request_firmware(nic); - /* If it's NULL, then no ucode is required */ - if (!fw || IS_ERR(fw)) - return PTR_ERR(fw); - - if ((err = e100_exec_cb(nic, (void *)fw, e100_setup_ucode))) - netif_err(nic, probe, nic->netdev, - "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 interrupts, something could have been set */ - iowrite8(~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))) { - netif_err(nic, probe, nic->netdev, "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)); -} - -static int e100_phy_check_without_mii(struct nic *nic) -{ - u8 phy_type; - int without_mii; - - phy_type = (nic->eeprom[eeprom_phy_iface] >> 8) & 0x0f; - - switch (phy_type) { - case NoSuchPhy: /* Non-MII PHY; UNTESTED! */ - case I82503: /* Non-MII PHY; UNTESTED! */ - case S80C24: /* Non-MII PHY; tested and working */ - /* paragraph from the FreeBSD driver, "FXP_PHY_80C24": - * The Seeq 80c24 AutoDUPLEX(tm) Ethernet Interface Adapter - * doesn't have a programming interface of any sort. The - * media is sensed automatically based on how the link partner - * is configured. This is, in essence, manual configuration. - */ - netif_info(nic, probe, nic->netdev, - "found MII-less i82503 or 80c24 or other PHY\n"); - - nic->mdio_ctrl = mdio_ctrl_phy_mii_emulated; - nic->mii.phy_id = 0; /* is this ok for an MII-less PHY? */ - - /* these might be needed for certain MII-less cards... - * nic->flags |= ich; - * nic->flags |= ich_10h_workaround; */ - - without_mii = 1; - break; - default: - without_mii = 0; - break; - } - return without_mii; -} - -#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; - } - if (addr == 32) { - /* uhoh, no PHY detected: check whether we seem to be some - * weird, rare variant which is *known* to not have any MII. - * But do this AFTER MII checking only, since this does - * lookup of EEPROM values which may easily be unreliable. */ - if (e100_phy_check_without_mii(nic)) - return 0; /* simply return and hope for the best */ - else { - /* for unknown cases log a fatal error */ - netif_err(nic, hw, nic->netdev, - "Failed to locate any known PHY, aborting\n"); - return -EAGAIN; - } - } else - netif_printk(nic, hw, KERN_DEBUG, nic->netdev, - "phy_addr = %d\n", nic->mii.phy_id); - - /* 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; - netif_printk(nic, hw, KERN_DEBUG, nic->netdev, - "phy ID = 0x%08X\n", nic->phy); - - /* Select 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 if (nic->phy != phy_82552_v) { - bmcr = mdio_read(netdev, addr, MII_BMCR); - mdio_write(netdev, addr, MII_BMCR, - bmcr & ~BMCR_ISOLATE); - } - } - /* - * Workaround for 82552: - * Clear the ISOLATE bit on selected phy_id last (mirrored on all - * other phy_id's) using bmcr value from addr discovery loop above. - */ - if (nic->phy == phy_82552_v) - mdio_write(netdev, nic->mii.phy_id, MII_BMCR, - bmcr & ~BMCR_ISOLATE); - - /* 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->phy == phy_82552_v) { - u16 advert = mdio_read(netdev, nic->mii.phy_id, MII_ADVERTISE); - - /* assign special tweaked mdio_ctrl() function */ - nic->mdio_ctrl = mdio_ctrl_phy_82552_v; - - /* Workaround Si not advertising flow-control during autoneg */ - advert |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM; - mdio_write(netdev, nic->mii.phy_id, MII_ADVERTISE, advert); - - /* Reset for the above changes to take effect */ - bmcr = mdio_read(netdev, nic->mii.phy_id, MII_BMCR); - bmcr |= BMCR_RESET; - mdio_write(netdev, nic->mii.phy_id, MII_BMCR, bmcr); - } else if ((nic->mac >= mac_82550_D102) || ((nic->flags & ich) && - (mdio_read(netdev, nic->mii.phy_id, MII_TPISTATUS) & 0x8000) && - !(nic->eeprom[eeprom_cnfg_mdix] & eeprom_mdix_enabled))) { - /* enable/disable MDI/MDI-X auto-switching. */ - mdio_write(netdev, nic->mii.phy_id, MII_NCONFIG, - nic->mii.force_media ? 0 : NCONFIG_AUTO_SWITCH); - } - - return 0; -} - -static int e100_hw_init(struct nic *nic) -{ - int err = 0; - - e100_hw_reset(nic); - - netif_err(nic, hw, nic->netdev, "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_load_ucode_wait(nic))) - 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 netdev_hw_addr *ha; - u16 i, count = min(netdev_mc_count(netdev), E100_MAX_MULTICAST_ADDRS); - - cb->command = cpu_to_le16(cb_multi); - cb->u.multi.count = cpu_to_le16(count * ETH_ALEN); - i = 0; - netdev_for_each_mc_addr(ha, netdev) { - if (i == count) - break; - memcpy(&cb->u.multi.addr[i++ * ETH_ALEN], &ha->addr, - ETH_ALEN); - } -} - -static void e100_set_multicast_list(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - - netif_printk(nic, hw, KERN_DEBUG, nic->netdev, - "mc_count=%d, flags=0x%04X\n", - netdev_mc_count(netdev), netdev->flags); - - if (netdev->flags & IFF_PROMISC) - nic->flags |= promiscuous; - else - nic->flags &= ~promiscuous; - - if (netdev->flags & IFF_ALLMULTI || - netdev_mc_count(netdev) > 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 *dev = nic->netdev; - struct net_device_stats *ns = &dev->stats; - struct stats *s = &nic->mem->stats; - __le32 *complete = (nic->mac < mac_82558_D101_A4) ? &s->fc_xmt_pause : - (nic->mac < mac_82559_D101M) ? (__le32 *)&s->xmt_tco_frames : - &s->complete; - - /* Device's stats reporting may take several microseconds to - * complete, so we're always waiting for results of the - * previous command. */ - - if (*complete == cpu_to_le32(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)) - netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev, - "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 = { .cmd = ETHTOOL_GSET }; - u32 speed; - - netif_printk(nic, timer, KERN_DEBUG, nic->netdev, - "right now = %ld\n", jiffies); - - /* mii library handles link maintenance tasks */ - - mii_ethtool_gset(&nic->mii, &cmd); - speed = ethtool_cmd_speed(&cmd); - - if (mii_link_ok(&nic->mii) && !netif_carrier_ok(nic->netdev)) { - netdev_info(nic->netdev, "NIC Link is Up %u Mbps %s Duplex\n", - speed == SPEED_100 ? 100 : 10, - cmd.duplex == DUPLEX_FULL ? "Full" : "Half"); - } else if (!mii_link_ok(&nic->mii) && netif_carrier_ok(nic->netdev)) { - netdev_info(nic->netdev, "NIC Link is 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); - iowrite8(ioread8(&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, 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 && 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; - - mod_timer(&nic->watchdog, - round_jiffies(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 netdev_tx_t 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)) - netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev, - "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. */ - netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev, - "No space for CB\n"); - netif_stop_queue(netdev); - break; - case -ENOMEM: - /* This is a hard error - log it. */ - netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev, - "Out of Tx resources, returning skb\n"); - netif_stop_queue(netdev); - return NETDEV_TX_BUSY; - } - - return NETDEV_TX_OK; -} - -static int e100_tx_clean(struct nic *nic) -{ - struct net_device *dev = nic->netdev; - struct cb *cb; - int tx_cleaned = 0; - - spin_lock(&nic->cb_lock); - - /* Clean CBs marked complete */ - for (cb = nic->cb_to_clean; - cb->status & cpu_to_le16(cb_complete); - cb = nic->cb_to_clean = cb->next) { - rmb(); /* read skb after status */ - netif_printk(nic, tx_done, KERN_DEBUG, nic->netdev, - "cb[%d]->status = 0x%04X\n", - (int)(((void*)cb - (void*)nic->cbs)/sizeof(struct cb)), - cb->status); - - if (likely(cb->skb != NULL)) { - dev->stats.tx_packets++; - dev->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); - dev_kfree_skb_any(cb->skb); - cb->skb = NULL; - tx_cleaned = 1; - } - cb->status = 0; - nic->cbs_avail++; - } - - 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_pool_free(nic->cbs_pool, 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_pool_alloc(nic->cbs_pool, GFP_KERNEL, - &nic->cbs_dma_addr); - if (!nic->cbs) - return -ENOMEM; - memset(nic->cbs, 0, count * sizeof(struct cb)); - - 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)); - } - - 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 = netdev_alloc_skb_ip_align(nic->netdev, RFD_BUF_LEN))) - return -ENOMEM; - - /* Init, and map the RFD. */ - skb_copy_to_linear_data(rx->skb, &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(nic->pdev, 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. We are safe to touch the previous RFD because - * it is protected by the before last buffer's el bit being set */ - if (rx->prev->skb) { - struct rfd *prev_rfd = (struct rfd *)rx->prev->skb->data; - put_unaligned_le32(rx->dma_addr, &prev_rfd->link); - pci_dma_sync_single_for_device(nic->pdev, rx->prev->dma_addr, - sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL); - } - - return 0; -} - -static int e100_rx_indicate(struct nic *nic, struct rx *rx, - unsigned int *work_done, unsigned int work_to_do) -{ - struct net_device *dev = nic->netdev; - 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_BIDIRECTIONAL); - rfd_status = le16_to_cpu(rfd->status); - - netif_printk(nic, rx_status, KERN_DEBUG, nic->netdev, - "status=0x%04X\n", rfd_status); - rmb(); /* read size after status bit */ - - /* If data isn't ready, nothing to indicate */ - if (unlikely(!(rfd_status & cb_complete))) { - /* If the next buffer has the el bit, but we think the receiver - * is still running, check to see if it really stopped while - * we had interrupts off. - * This allows for a fast restart without re-enabling - * interrupts */ - if ((le16_to_cpu(rfd->command) & cb_el) && - (RU_RUNNING == nic->ru_running)) - - if (ioread8(&nic->csr->scb.status) & rus_no_res) - nic->ru_running = RU_SUSPENDED; - pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr, - sizeof(struct rfd), - PCI_DMA_FROMDEVICE); - 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_BIDIRECTIONAL); - - /* If this buffer has the el bit, but we think the receiver - * is still running, check to see if it really stopped while - * we had interrupts off. - * This allows for a fast restart without re-enabling interrupts. - * This can happen when the RU sees the size change but also sees - * the el bit set. */ - if ((le16_to_cpu(rfd->command) & cb_el) && - (RU_RUNNING == nic->ru_running)) { - - if (ioread8(&nic->csr->scb.status) & rus_no_res) - 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 */ - 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++; - dev_kfree_skb_any(skb); - } else { - dev->stats.rx_packets++; - dev->stats.rx_bytes += actual_size; - netif_receive_skb(skb); - 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, err = 0; - struct rx *old_before_last_rx, *new_before_last_rx; - struct rfd *old_before_last_rfd, *new_before_last_rfd; - - /* Indicate newly arrived packets */ - for (rx = nic->rx_to_clean; rx->skb; rx = nic->rx_to_clean = rx->next) { - err = e100_rx_indicate(nic, rx, work_done, work_to_do); - /* Hit quota or no more to clean */ - if (-EAGAIN == err || -ENODATA == err) - break; - } - - - /* On EAGAIN, hit quota so have more work to do, restart once - * cleanup is complete. - * Else, 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 (-EAGAIN != err && RU_SUSPENDED == nic->ru_running) - restart_required = 1; - - old_before_last_rx = nic->rx_to_use->prev->prev; - old_before_last_rfd = (struct rfd *)old_before_last_rx->skb->data; - - /* 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) */ - } - - new_before_last_rx = nic->rx_to_use->prev->prev; - if (new_before_last_rx != old_before_last_rx) { - /* Set the el-bit on the buffer that is before the last buffer. - * This lets us update the next pointer on the last buffer - * without worrying about hardware touching it. - * We set the size to 0 to prevent hardware from touching this - * buffer. - * When the hardware hits the before last buffer with el-bit - * and size of 0, it will RNR interrupt, the RUS will go into - * the No Resources state. It will not complete nor write to - * this buffer. */ - new_before_last_rfd = - (struct rfd *)new_before_last_rx->skb->data; - new_before_last_rfd->size = 0; - new_before_last_rfd->command |= cpu_to_le16(cb_el); - pci_dma_sync_single_for_device(nic->pdev, - new_before_last_rx->dma_addr, sizeof(struct rfd), - PCI_DMA_BIDIRECTIONAL); - - /* Now that we have a new stopping point, we can clear the old - * stopping point. We must sync twice to get the proper - * ordering on the hardware side of things. */ - old_before_last_rfd->command &= ~cpu_to_le16(cb_el); - pci_dma_sync_single_for_device(nic->pdev, - old_before_last_rx->dma_addr, sizeof(struct rfd), - PCI_DMA_BIDIRECTIONAL); - old_before_last_rfd->size = cpu_to_le16(VLAN_ETH_FRAME_LEN); - pci_dma_sync_single_for_device(nic->pdev, - old_before_last_rx->dma_addr, sizeof(struct rfd), - PCI_DMA_BIDIRECTIONAL); - } - - if (restart_required) { - // ack the rnr? - iowrite8(stat_ack_rnr, &nic->csr->scb.stat_ack); - e100_start_receiver(nic, nic->rx_to_clean); - 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_BIDIRECTIONAL); - dev_kfree_skb(rx->skb); - } - } - 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; - struct rfd *before_last; - - nic->rx_to_use = nic->rx_to_clean = NULL; - nic->ru_running = RU_UNINITIALIZED; - - if (!(nic->rxs = kcalloc(count, sizeof(struct rx), GFP_ATOMIC))) - return -ENOMEM; - - 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; - } - } - /* Set the el-bit on the buffer that is before the last buffer. - * This lets us update the next pointer on the last buffer without - * worrying about hardware touching it. - * We set the size to 0 to prevent hardware from touching this buffer. - * When the hardware hits the before last buffer with el-bit and size - * of 0, it will RNR interrupt, the RU will go into the No Resources - * state. It will not complete nor write to this buffer. */ - rx = nic->rxs->prev->prev; - before_last = (struct rfd *)rx->skb->data; - before_last->command |= cpu_to_le16(cb_el); - before_last->size = 0; - pci_dma_sync_single_for_device(nic->pdev, rx->dma_addr, - sizeof(struct rfd), PCI_DMA_BIDIRECTIONAL); - - 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 net_device *netdev = dev_id; - struct nic *nic = netdev_priv(netdev); - u8 stat_ack = ioread8(&nic->csr->scb.stat_ack); - - netif_printk(nic, intr, KERN_DEBUG, nic->netdev, - "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) */ - iowrite8(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 (likely(napi_schedule_prep(&nic->napi))) { - e100_disable_irq(nic); - __napi_schedule(&nic->napi); - } - - return IRQ_HANDLED; -} - -static int e100_poll(struct napi_struct *napi, int budget) -{ - struct nic *nic = container_of(napi, struct nic, napi); - unsigned int work_done = 0; - - e100_rx_clean(nic, &work_done, budget); - e100_tx_clean(nic); - - /* If budget not fully consumed, exit the polling mode */ - if (work_done < budget) { - napi_complete(napi); - e100_enable_irq(nic); - } - - return work_done; -} - -#ifdef CONFIG_NET_POLL_CONTROLLER -static void e100_netpoll(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - - e100_disable_irq(nic); - e100_intr(nic->pdev->irq, netdev); - e100_tx_clean(nic); - e100_enable_irq(nic); -} -#endif - -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; -} - -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); -} - -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; - e100_set_multicast_list(nic->netdev); - e100_start_receiver(nic, NULL); - mod_timer(&nic->watchdog, jiffies); - 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); - napi_enable(&nic->napi); - /* 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) -{ - /* wait here for poll to complete */ - napi_disable(&nic->napi); - netif_stop_queue(nic->netdev); - e100_hw_reset(nic); - free_irq(nic->pdev->irq, nic->netdev); - del_timer_sync(&nic->watchdog); - 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); -} - -static void e100_tx_timeout_task(struct work_struct *work) -{ - struct nic *nic = container_of(work, struct nic, tx_timeout_task); - struct net_device *netdev = nic->netdev; - - netif_printk(nic, tx_err, KERN_DEBUG, nic->netdev, - "scb.status=0x%02X\n", ioread8(&nic->csr->scb.status)); - - rtnl_lock(); - if (netif_running(netdev)) { - e100_down(netdev_priv(netdev)); - e100_up(netdev_priv(netdev)); - } - rtnl_unlock(); -} - -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 = netdev_alloc_skb(nic->netdev, 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_BIDIRECTIONAL); - - 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 -#define E100_82552_LED_OVERRIDE 0x19 -#define E100_82552_LED_ON 0x000F /* LEDTX and LED_RX both on */ -#define E100_82552_LED_OFF 0x000A /* LEDTX and LED_RX both off */ - -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)); -} - -#define E100_PHY_REGS 0x1C -static int e100_get_regs_len(struct net_device *netdev) -{ - struct nic *nic = netdev_priv(netdev); - return 1 + E100_PHY_REGS + sizeof(nic->mem->dump_buf); -} - -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->pdev->revision; - buff[0] = ioread8(&nic->csr->scb.cmd_hi) << 24 | - ioread8(&nic->csr->scb.cmd_lo) << 16 | - ioread16(&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 && wol->wolopts != WAKE_MAGIC) || - !device_can_wakeup(&nic->pdev->dev)) - return -EOPNOTSUPP; - - if (wol->wolopts) - nic->flags |= wol_magic; - else - nic->flags &= ~wol_magic; - - device_set_wakeup_enable(&nic->pdev->dev, wol->wolopts); - - 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); - netif_info(nic, drv, nic->netdev, "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 ARRAY_SIZE(e100_gstrings_test) - -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_set_phys_id(struct net_device *netdev, - enum ethtool_phys_id_state state) -{ - struct nic *nic = netdev_priv(netdev); - enum led_state { - led_on = 0x01, - led_off = 0x04, - led_on_559 = 0x05, - led_on_557 = 0x07, - }; - u16 led_reg = (nic->phy == phy_82552_v) ? E100_82552_LED_OVERRIDE : - MII_LED_CONTROL; - u16 leds = 0; - - switch (state) { - case ETHTOOL_ID_ACTIVE: - return 2; - - case ETHTOOL_ID_ON: - leds = (nic->phy == phy_82552_v) ? E100_82552_LED_ON : - (nic->mac < mac_82559_D101M) ? led_on_557 : led_on_559; - break; - - case ETHTOOL_ID_OFF: - leds = (nic->phy == phy_82552_v) ? E100_82552_LED_OFF : led_off; - break; - - case ETHTOOL_ID_INACTIVE: - break; - } - - mdio_write(netdev, nic->mii.phy_id, led_reg, leds); - 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 ARRAY_SIZE(e100_gstrings_stats) - -static int e100_get_sset_count(struct net_device *netdev, int sset) -{ - switch (sset) { - case ETH_SS_TEST: - return E100_TEST_LEN; - case ETH_SS_STATS: - return E100_STATS_LEN; - default: - return -EOPNOTSUPP; - } -} - -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 *)&netdev->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 const 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 = e100_diag_test, - .get_strings = e100_get_strings, - .set_phys_id = e100_set_phys_id, - .get_ethtool_stats = e100_get_ethtool_stats, - .get_sset_count = e100_get_sset_count, -}; - -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; - - netif_carrier_off(netdev); - if ((err = e100_up(nic))) - netif_err(nic, ifup, nic->netdev, "Cannot open interface, aborting\n"); - return err; -} - -static int e100_close(struct net_device *netdev) -{ - e100_down(netdev_priv(netdev)); - return 0; -} - -static const struct net_device_ops e100_netdev_ops = { - .ndo_open = e100_open, - .ndo_stop = e100_close, - .ndo_start_xmit = e100_xmit_frame, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_multicast_list = e100_set_multicast_list, - .ndo_set_mac_address = e100_set_mac_address, - .ndo_change_mtu = e100_change_mtu, - .ndo_do_ioctl = e100_do_ioctl, - .ndo_tx_timeout = e100_tx_timeout, -#ifdef CONFIG_NET_POLL_CONTROLLER - .ndo_poll_controller = e100_netpoll, -#endif -}; - -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) - pr_err("Etherdev alloc failed, aborting\n"); - return -ENOMEM; - } - - netdev->netdev_ops = &e100_netdev_ops; - SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops); - netdev->watchdog_timeo = E100_WATCHDOG_PERIOD; - strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); - - nic = netdev_priv(netdev); - netif_napi_add(netdev, &nic->napi, e100_poll, E100_NAPI_WEIGHT); - nic->netdev = netdev; - nic->pdev = pdev; - nic->msg_enable = (1 << debug) - 1; - nic->mdio_ctrl = mdio_ctrl_hw; - pci_set_drvdata(pdev, netdev); - - if ((err = pci_enable_device(pdev))) { - netif_err(nic, probe, nic->netdev, "Cannot enable PCI device, aborting\n"); - goto err_out_free_dev; - } - - if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { - netif_err(nic, probe, nic->netdev, "Cannot find proper PCI device base address, aborting\n"); - err = -ENODEV; - goto err_out_disable_pdev; - } - - if ((err = pci_request_regions(pdev, DRV_NAME))) { - netif_err(nic, probe, nic->netdev, "Cannot obtain PCI resources, aborting\n"); - goto err_out_disable_pdev; - } - - if ((err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)))) { - netif_err(nic, probe, nic->netdev, "No usable DMA configuration, aborting\n"); - goto err_out_free_res; - } - - SET_NETDEV_DEV(netdev, &pdev->dev); - - if (use_io) - netif_info(nic, probe, nic->netdev, "using i/o access mode\n"); - - nic->csr = pci_iomap(pdev, (use_io ? 1 : 0), sizeof(struct csr)); - if (!nic->csr) { - netif_err(nic, probe, nic->netdev, "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_WORK(&nic->tx_timeout_task, e100_tx_timeout_task); - - if ((err = e100_alloc(nic))) { - netif_err(nic, probe, nic->netdev, "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)) { - if (!eeprom_bad_csum_allow) { - netif_err(nic, probe, nic->netdev, "Invalid MAC address from EEPROM, aborting\n"); - err = -EAGAIN; - goto err_out_free; - } else { - netif_err(nic, probe, nic->netdev, "Invalid MAC address from EEPROM, you MUST configure one.\n"); - } - } - - /* 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; - device_set_wakeup_enable(&pdev->dev, true); - } - - /* ack any pending wake events, disable PME */ - pci_pme_active(pdev, false); - - strcpy(netdev->name, "eth%d"); - if ((err = register_netdev(netdev))) { - netif_err(nic, probe, nic->netdev, "Cannot register net device, aborting\n"); - goto err_out_free; - } - nic->cbs_pool = pci_pool_create(netdev->name, - nic->pdev, - nic->params.cbs.max * sizeof(struct cb), - sizeof(u32), - 0); - netif_info(nic, probe, nic->netdev, - "addr 0x%llx, irq %d, MAC addr %pM\n", - (unsigned long long)pci_resource_start(pdev, use_io ? 1 : 0), - pdev->irq, netdev->dev_addr); - - return 0; - -err_out_free: - e100_free(nic); -err_out_iounmap: - pci_iounmap(pdev, 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); - unregister_netdev(netdev); - e100_free(nic); - pci_iounmap(pdev, nic->csr); - pci_pool_destroy(nic->cbs_pool); - free_netdev(netdev); - pci_release_regions(pdev); - pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); - } -} - -#define E100_82552_SMARTSPEED 0x14 /* SmartSpeed Ctrl register */ -#define E100_82552_REV_ANEG 0x0200 /* Reverse auto-negotiation */ -#define E100_82552_ANEG_NOW 0x0400 /* Auto-negotiate now */ -static void __e100_shutdown(struct pci_dev *pdev, bool *enable_wake) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct nic *nic = netdev_priv(netdev); - - if (netif_running(netdev)) - e100_down(nic); - netif_device_detach(netdev); - - pci_save_state(pdev); - - if ((nic->flags & wol_magic) | e100_asf(nic)) { - /* enable reverse auto-negotiation */ - if (nic->phy == phy_82552_v) { - u16 smartspeed = mdio_read(netdev, nic->mii.phy_id, - E100_82552_SMARTSPEED); - - mdio_write(netdev, nic->mii.phy_id, - E100_82552_SMARTSPEED, smartspeed | - E100_82552_REV_ANEG | E100_82552_ANEG_NOW); - } - *enable_wake = true; - } else { - *enable_wake = false; - } - - pci_disable_device(pdev); -} - -static int __e100_power_off(struct pci_dev *pdev, bool wake) -{ - if (wake) - return pci_prepare_to_sleep(pdev); - - pci_wake_from_d3(pdev, false); - pci_set_power_state(pdev, PCI_D3hot); - - return 0; -} - -#ifdef CONFIG_PM -static int e100_suspend(struct pci_dev *pdev, pm_message_t state) -{ - bool wake; - __e100_shutdown(pdev, &wake); - return __e100_power_off(pdev, wake); -} - -static int e100_resume(struct pci_dev *pdev) -{ - struct net_device *netdev = pci_get_drvdata(pdev); - struct nic *nic = netdev_priv(netdev); - - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - /* ack any pending wake events, disable PME */ - pci_enable_wake(pdev, 0, 0); - - /* disable reverse auto-negotiation */ - if (nic->phy == phy_82552_v) { - u16 smartspeed = mdio_read(netdev, nic->mii.phy_id, - E100_82552_SMARTSPEED); - - mdio_write(netdev, nic->mii.phy_id, - E100_82552_SMARTSPEED, - smartspeed & ~(E100_82552_REV_ANEG)); - } - - netif_device_attach(netdev); - if (netif_running(netdev)) - e100_up(nic); - - return 0; -} -#endif /* CONFIG_PM */ - -static void e100_shutdown(struct pci_dev *pdev) -{ - bool wake; - __e100_shutdown(pdev, &wake); - if (system_state == SYSTEM_POWER_OFF) - __e100_power_off(pdev, wake); -} - -/* ------------------ PCI Error Recovery infrastructure -------------- */ -/** - * e100_io_error_detected - called when PCI error is detected. - * @pdev: Pointer to PCI device - * @state: The current pci connection 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); - - netif_device_detach(netdev); - - if (state == pci_channel_io_perm_failure) - return PCI_ERS_RESULT_DISCONNECT; - - if (netif_running(netdev)) - e100_down(nic); - pci_disable_device(pdev); - - /* 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)) { - pr_err("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); - - netif_device_attach(netdev); - if (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 - /* Power Management hooks */ - .suspend = e100_suspend, - .resume = e100_resume, -#endif - .shutdown = e100_shutdown, - .err_handler = &e100_err_handler, -}; - -static int __init e100_init_module(void) -{ - if (((1 << debug) - 1) & NETIF_MSG_DRV) { - pr_info("%s, %s\n", DRV_DESCRIPTION, DRV_VERSION); - pr_info("%s\n", DRV_COPYRIGHT); - } - return pci_register_driver(&e100_driver); -} - -static void __exit e100_cleanup_module(void) -{ - pci_unregister_driver(&e100_driver); -} - -module_init(e100_init_module); -module_exit(e100_cleanup_module); |