diff options
| author | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-05-20 20:43:09 -0700 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2011-08-12 00:21:56 -0700 |
| commit | f2148a472883ddf77626fff52b070655a8a0a788 (patch) | |
| tree | 4224e4b1f7b7bbec8a5c5ebbd2ed1e2a69a89b9a /drivers/net/via-velocity.c | |
| parent | 527a626601de6ff89859de90883cc546892bf3ca (diff) | |
| download | linux-f2148a472883ddf77626fff52b070655a8a0a788.tar.gz linux-f2148a472883ddf77626fff52b070655a8a0a788.tar.bz2 linux-f2148a472883ddf77626fff52b070655a8a0a788.zip | |
via-*: Move the VIA drivers
Move the VIA drivers into drivers/net/ethernet/via/ and make the
necessary Kconfig and Makefile changes.
CC: Roger Luethi <rl@hellgate.ch>
CC: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/via-velocity.c')
| -rw-r--r-- | drivers/net/via-velocity.c | 3592 |
1 files changed, 0 insertions, 3592 deletions
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c deleted file mode 100644 index 490ec5b2775a..000000000000 --- a/drivers/net/via-velocity.c +++ /dev/null @@ -1,3592 +0,0 @@ -/* - * This code is derived from the VIA reference driver (copyright message - * below) provided to Red Hat by VIA Networking Technologies, Inc. for - * addition to the Linux kernel. - * - * The code has been merged into one source file, cleaned up to follow - * Linux coding style, ported to the Linux 2.6 kernel tree and cleaned - * for 64bit hardware platforms. - * - * TODO - * rx_copybreak/alignment - * More testing - * - * The changes are (c) Copyright 2004, Red Hat Inc. <alan@lxorguk.ukuu.org.uk> - * Additional fixes and clean up: Francois Romieu - * - * This source has not been verified for use in safety critical systems. - * - * Please direct queries about the revamped driver to the linux-kernel - * list not VIA. - * - * Original code: - * - * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc. - * All rights reserved. - * - * This software may be redistributed and/or modified under - * the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or - * any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * for more details. - * - * Author: Chuang Liang-Shing, AJ Jiang - * - * Date: Jan 24, 2003 - * - * MODULE_LICENSE("GPL"); - * - */ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/bitops.h> -#include <linux/init.h> -#include <linux/mm.h> -#include <linux/errno.h> -#include <linux/ioport.h> -#include <linux/pci.h> -#include <linux/kernel.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/delay.h> -#include <linux/timer.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <linux/string.h> -#include <linux/wait.h> -#include <linux/io.h> -#include <linux/if.h> -#include <linux/uaccess.h> -#include <linux/proc_fs.h> -#include <linux/inetdevice.h> -#include <linux/reboot.h> -#include <linux/ethtool.h> -#include <linux/mii.h> -#include <linux/in.h> -#include <linux/if_arp.h> -#include <linux/if_vlan.h> -#include <linux/ip.h> -#include <linux/tcp.h> -#include <linux/udp.h> -#include <linux/crc-ccitt.h> -#include <linux/crc32.h> - -#include "via-velocity.h" - - -static int velocity_nics; -static int msglevel = MSG_LEVEL_INFO; - -/** - * mac_get_cam_mask - Read a CAM mask - * @regs: register block for this velocity - * @mask: buffer to store mask - * - * Fetch the mask bits of the selected CAM and store them into the - * provided mask buffer. - */ -static void mac_get_cam_mask(struct mac_regs __iomem *regs, u8 *mask) -{ - int i; - - /* Select CAM mask */ - BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); - - writeb(0, ®s->CAMADDR); - - /* read mask */ - for (i = 0; i < 8; i++) - *mask++ = readb(&(regs->MARCAM[i])); - - /* disable CAMEN */ - writeb(0, ®s->CAMADDR); - - /* Select mar */ - BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); -} - -/** - * mac_set_cam_mask - Set a CAM mask - * @regs: register block for this velocity - * @mask: CAM mask to load - * - * Store a new mask into a CAM - */ -static void mac_set_cam_mask(struct mac_regs __iomem *regs, u8 *mask) -{ - int i; - /* Select CAM mask */ - BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); - - writeb(CAMADDR_CAMEN, ®s->CAMADDR); - - for (i = 0; i < 8; i++) - writeb(*mask++, &(regs->MARCAM[i])); - - /* disable CAMEN */ - writeb(0, ®s->CAMADDR); - - /* Select mar */ - BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); -} - -static void mac_set_vlan_cam_mask(struct mac_regs __iomem *regs, u8 *mask) -{ - int i; - /* Select CAM mask */ - BYTE_REG_BITS_SET(CAMCR_PS_CAM_MASK, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); - - writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL, ®s->CAMADDR); - - for (i = 0; i < 8; i++) - writeb(*mask++, &(regs->MARCAM[i])); - - /* disable CAMEN */ - writeb(0, ®s->CAMADDR); - - /* Select mar */ - BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); -} - -/** - * mac_set_cam - set CAM data - * @regs: register block of this velocity - * @idx: Cam index - * @addr: 2 or 6 bytes of CAM data - * - * Load an address or vlan tag into a CAM - */ -static void mac_set_cam(struct mac_regs __iomem *regs, int idx, const u8 *addr) -{ - int i; - - /* Select CAM mask */ - BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); - - idx &= (64 - 1); - - writeb(CAMADDR_CAMEN | idx, ®s->CAMADDR); - - for (i = 0; i < 6; i++) - writeb(*addr++, &(regs->MARCAM[i])); - - BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR); - - udelay(10); - - writeb(0, ®s->CAMADDR); - - /* Select mar */ - BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); -} - -static void mac_set_vlan_cam(struct mac_regs __iomem *regs, int idx, - const u8 *addr) -{ - - /* Select CAM mask */ - BYTE_REG_BITS_SET(CAMCR_PS_CAM_DATA, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); - - idx &= (64 - 1); - - writeb(CAMADDR_CAMEN | CAMADDR_VCAMSL | idx, ®s->CAMADDR); - writew(*((u16 *) addr), ®s->MARCAM[0]); - - BYTE_REG_BITS_ON(CAMCR_CAMWR, ®s->CAMCR); - - udelay(10); - - writeb(0, ®s->CAMADDR); - - /* Select mar */ - BYTE_REG_BITS_SET(CAMCR_PS_MAR, CAMCR_PS1 | CAMCR_PS0, ®s->CAMCR); -} - - -/** - * mac_wol_reset - reset WOL after exiting low power - * @regs: register block of this velocity - * - * Called after we drop out of wake on lan mode in order to - * reset the Wake on lan features. This function doesn't restore - * the rest of the logic from the result of sleep/wakeup - */ -static void mac_wol_reset(struct mac_regs __iomem *regs) -{ - - /* Turn off SWPTAG right after leaving power mode */ - BYTE_REG_BITS_OFF(STICKHW_SWPTAG, ®s->STICKHW); - /* clear sticky bits */ - BYTE_REG_BITS_OFF((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW); - - BYTE_REG_BITS_OFF(CHIPGCR_FCGMII, ®s->CHIPGCR); - BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR); - /* disable force PME-enable */ - writeb(WOLCFG_PMEOVR, ®s->WOLCFGClr); - /* disable power-event config bit */ - writew(0xFFFF, ®s->WOLCRClr); - /* clear power status */ - writew(0xFFFF, ®s->WOLSRClr); -} - -static const struct ethtool_ops velocity_ethtool_ops; - -/* - Define module options -*/ - -MODULE_AUTHOR("VIA Networking Technologies, Inc."); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("VIA Networking Velocity Family Gigabit Ethernet Adapter Driver"); - -#define VELOCITY_PARAM(N, D) \ - static int N[MAX_UNITS] = OPTION_DEFAULT;\ - module_param_array(N, int, NULL, 0); \ - MODULE_PARM_DESC(N, D); - -#define RX_DESC_MIN 64 -#define RX_DESC_MAX 255 -#define RX_DESC_DEF 64 -VELOCITY_PARAM(RxDescriptors, "Number of receive descriptors"); - -#define TX_DESC_MIN 16 -#define TX_DESC_MAX 256 -#define TX_DESC_DEF 64 -VELOCITY_PARAM(TxDescriptors, "Number of transmit descriptors"); - -#define RX_THRESH_MIN 0 -#define RX_THRESH_MAX 3 -#define RX_THRESH_DEF 0 -/* rx_thresh[] is used for controlling the receive fifo threshold. - 0: indicate the rxfifo threshold is 128 bytes. - 1: indicate the rxfifo threshold is 512 bytes. - 2: indicate the rxfifo threshold is 1024 bytes. - 3: indicate the rxfifo threshold is store & forward. -*/ -VELOCITY_PARAM(rx_thresh, "Receive fifo threshold"); - -#define DMA_LENGTH_MIN 0 -#define DMA_LENGTH_MAX 7 -#define DMA_LENGTH_DEF 6 - -/* DMA_length[] is used for controlling the DMA length - 0: 8 DWORDs - 1: 16 DWORDs - 2: 32 DWORDs - 3: 64 DWORDs - 4: 128 DWORDs - 5: 256 DWORDs - 6: SF(flush till emply) - 7: SF(flush till emply) -*/ -VELOCITY_PARAM(DMA_length, "DMA length"); - -#define IP_ALIG_DEF 0 -/* IP_byte_align[] is used for IP header DWORD byte aligned - 0: indicate the IP header won't be DWORD byte aligned.(Default) . - 1: indicate the IP header will be DWORD byte aligned. - In some environment, the IP header should be DWORD byte aligned, - or the packet will be droped when we receive it. (eg: IPVS) -*/ -VELOCITY_PARAM(IP_byte_align, "Enable IP header dword aligned"); - -#define FLOW_CNTL_DEF 1 -#define FLOW_CNTL_MIN 1 -#define FLOW_CNTL_MAX 5 - -/* flow_control[] is used for setting the flow control ability of NIC. - 1: hardware deafult - AUTO (default). Use Hardware default value in ANAR. - 2: enable TX flow control. - 3: enable RX flow control. - 4: enable RX/TX flow control. - 5: disable -*/ -VELOCITY_PARAM(flow_control, "Enable flow control ability"); - -#define MED_LNK_DEF 0 -#define MED_LNK_MIN 0 -#define MED_LNK_MAX 5 -/* speed_duplex[] is used for setting the speed and duplex mode of NIC. - 0: indicate autonegotiation for both speed and duplex mode - 1: indicate 100Mbps half duplex mode - 2: indicate 100Mbps full duplex mode - 3: indicate 10Mbps half duplex mode - 4: indicate 10Mbps full duplex mode - 5: indicate 1000Mbps full duplex mode - - Note: - if EEPROM have been set to the force mode, this option is ignored - by driver. -*/ -VELOCITY_PARAM(speed_duplex, "Setting the speed and duplex mode"); - -#define VAL_PKT_LEN_DEF 0 -/* ValPktLen[] is used for setting the checksum offload ability of NIC. - 0: Receive frame with invalid layer 2 length (Default) - 1: Drop frame with invalid layer 2 length -*/ -VELOCITY_PARAM(ValPktLen, "Receiving or Drop invalid 802.3 frame"); - -#define WOL_OPT_DEF 0 -#define WOL_OPT_MIN 0 -#define WOL_OPT_MAX 7 -/* wol_opts[] is used for controlling wake on lan behavior. - 0: Wake up if recevied a magic packet. (Default) - 1: Wake up if link status is on/off. - 2: Wake up if recevied an arp packet. - 4: Wake up if recevied any unicast packet. - Those value can be sumed up to support more than one option. -*/ -VELOCITY_PARAM(wol_opts, "Wake On Lan options"); - -static int rx_copybreak = 200; -module_param(rx_copybreak, int, 0644); -MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames"); - -/* - * Internal board variants. At the moment we have only one - */ -static struct velocity_info_tbl chip_info_table[] = { - {CHIP_TYPE_VT6110, "VIA Networking Velocity Family Gigabit Ethernet Adapter", 1, 0x00FFFFFFUL}, - { } -}; - -/* - * Describe the PCI device identifiers that we support in this - * device driver. Used for hotplug autoloading. - */ -static DEFINE_PCI_DEVICE_TABLE(velocity_id_table) = { - { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_612X) }, - { } -}; - -MODULE_DEVICE_TABLE(pci, velocity_id_table); - -/** - * get_chip_name - identifier to name - * @id: chip identifier - * - * Given a chip identifier return a suitable description. Returns - * a pointer a static string valid while the driver is loaded. - */ -static const char __devinit *get_chip_name(enum chip_type chip_id) -{ - int i; - for (i = 0; chip_info_table[i].name != NULL; i++) - if (chip_info_table[i].chip_id == chip_id) - break; - return chip_info_table[i].name; -} - -/** - * velocity_remove1 - device unplug - * @pdev: PCI device being removed - * - * Device unload callback. Called on an unplug or on module - * unload for each active device that is present. Disconnects - * the device from the network layer and frees all the resources - */ -static void __devexit velocity_remove1(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct velocity_info *vptr = netdev_priv(dev); - - unregister_netdev(dev); - iounmap(vptr->mac_regs); - pci_release_regions(pdev); - pci_disable_device(pdev); - pci_set_drvdata(pdev, NULL); - free_netdev(dev); - - velocity_nics--; -} - -/** - * velocity_set_int_opt - parser for integer options - * @opt: pointer to option value - * @val: value the user requested (or -1 for default) - * @min: lowest value allowed - * @max: highest value allowed - * @def: default value - * @name: property name - * @dev: device name - * - * Set an integer property in the module options. This function does - * all the verification and checking as well as reporting so that - * we don't duplicate code for each option. - */ -static void __devinit velocity_set_int_opt(int *opt, int val, int min, int max, int def, char *name, const char *devname) -{ - if (val == -1) - *opt = def; - else if (val < min || val > max) { - VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (%d-%d)\n", - devname, name, min, max); - *opt = def; - } else { - VELOCITY_PRT(MSG_LEVEL_INFO, KERN_INFO "%s: set value of parameter %s to %d\n", - devname, name, val); - *opt = val; - } -} - -/** - * velocity_set_bool_opt - parser for boolean options - * @opt: pointer to option value - * @val: value the user requested (or -1 for default) - * @def: default value (yes/no) - * @flag: numeric value to set for true. - * @name: property name - * @dev: device name - * - * Set a boolean property in the module options. This function does - * all the verification and checking as well as reporting so that - * we don't duplicate code for each option. - */ -static void __devinit velocity_set_bool_opt(u32 *opt, int val, int def, u32 flag, char *name, const char *devname) -{ - (*opt) &= (~flag); - if (val == -1) - *opt |= (def ? flag : 0); - else if (val < 0 || val > 1) { - printk(KERN_NOTICE "%s: the value of parameter %s is invalid, the valid range is (0-1)\n", - devname, name); - *opt |= (def ? flag : 0); - } else { - printk(KERN_INFO "%s: set parameter %s to %s\n", - devname, name, val ? "TRUE" : "FALSE"); - *opt |= (val ? flag : 0); - } -} - -/** - * velocity_get_options - set options on device - * @opts: option structure for the device - * @index: index of option to use in module options array - * @devname: device name - * - * Turn the module and command options into a single structure - * for the current device - */ -static void __devinit velocity_get_options(struct velocity_opt *opts, int index, const char *devname) -{ - - velocity_set_int_opt(&opts->rx_thresh, rx_thresh[index], RX_THRESH_MIN, RX_THRESH_MAX, RX_THRESH_DEF, "rx_thresh", devname); - velocity_set_int_opt(&opts->DMA_length, DMA_length[index], DMA_LENGTH_MIN, DMA_LENGTH_MAX, DMA_LENGTH_DEF, "DMA_length", devname); - velocity_set_int_opt(&opts->numrx, RxDescriptors[index], RX_DESC_MIN, RX_DESC_MAX, RX_DESC_DEF, "RxDescriptors", devname); - velocity_set_int_opt(&opts->numtx, TxDescriptors[index], TX_DESC_MIN, TX_DESC_MAX, TX_DESC_DEF, "TxDescriptors", devname); - - velocity_set_int_opt(&opts->flow_cntl, flow_control[index], FLOW_CNTL_MIN, FLOW_CNTL_MAX, FLOW_CNTL_DEF, "flow_control", devname); - velocity_set_bool_opt(&opts->flags, IP_byte_align[index], IP_ALIG_DEF, VELOCITY_FLAGS_IP_ALIGN, "IP_byte_align", devname); - velocity_set_bool_opt(&opts->flags, ValPktLen[index], VAL_PKT_LEN_DEF, VELOCITY_FLAGS_VAL_PKT_LEN, "ValPktLen", devname); - velocity_set_int_opt((int *) &opts->spd_dpx, speed_duplex[index], MED_LNK_MIN, MED_LNK_MAX, MED_LNK_DEF, "Media link mode", devname); - velocity_set_int_opt((int *) &opts->wol_opts, wol_opts[index], WOL_OPT_MIN, WOL_OPT_MAX, WOL_OPT_DEF, "Wake On Lan options", devname); - opts->numrx = (opts->numrx & ~3); -} - -/** - * velocity_init_cam_filter - initialise CAM - * @vptr: velocity to program - * - * Initialize the content addressable memory used for filters. Load - * appropriately according to the presence of VLAN - */ -static void velocity_init_cam_filter(struct velocity_info *vptr) -{ - struct mac_regs __iomem *regs = vptr->mac_regs; - unsigned int vid, i = 0; - - /* Turn on MCFG_PQEN, turn off MCFG_RTGOPT */ - WORD_REG_BITS_SET(MCFG_PQEN, MCFG_RTGOPT, ®s->MCFG); - WORD_REG_BITS_ON(MCFG_VIDFR, ®s->MCFG); - - /* Disable all CAMs */ - memset(vptr->vCAMmask, 0, sizeof(u8) * 8); - memset(vptr->mCAMmask, 0, sizeof(u8) * 8); - mac_set_vlan_cam_mask(regs, vptr->vCAMmask); - mac_set_cam_mask(regs, vptr->mCAMmask); - - /* Enable VCAMs */ - - if (test_bit(0, vptr->active_vlans)) - WORD_REG_BITS_ON(MCFG_RTGOPT, ®s->MCFG); - - for_each_set_bit(vid, vptr->active_vlans, VLAN_N_VID) { - mac_set_vlan_cam(regs, i, (u8 *) &vid); - vptr->vCAMmask[i / 8] |= 0x1 << (i % 8); - if (++i >= VCAM_SIZE) - break; - } - mac_set_vlan_cam_mask(regs, vptr->vCAMmask); -} - -static void velocity_vlan_rx_add_vid(struct net_device *dev, unsigned short vid) -{ - struct velocity_info *vptr = netdev_priv(dev); - - spin_lock_irq(&vptr->lock); - set_bit(vid, vptr->active_vlans); - velocity_init_cam_filter(vptr); - spin_unlock_irq(&vptr->lock); -} - -static void velocity_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) -{ - struct velocity_info *vptr = netdev_priv(dev); - - spin_lock_irq(&vptr->lock); - clear_bit(vid, vptr->active_vlans); - velocity_init_cam_filter(vptr); - spin_unlock_irq(&vptr->lock); -} - -static void velocity_init_rx_ring_indexes(struct velocity_info *vptr) -{ - vptr->rx.dirty = vptr->rx.filled = vptr->rx.curr = 0; -} - -/** - * velocity_rx_reset - handle a receive reset - * @vptr: velocity we are resetting - * - * Reset the ownership and status for the receive ring side. - * Hand all the receive queue to the NIC. - */ -static void velocity_rx_reset(struct velocity_info *vptr) -{ - - struct mac_regs __iomem *regs = vptr->mac_regs; - int i; - - velocity_init_rx_ring_indexes(vptr); - - /* - * Init state, all RD entries belong to the NIC - */ - for (i = 0; i < vptr->options.numrx; ++i) - vptr->rx.ring[i].rdesc0.len |= OWNED_BY_NIC; - - writew(vptr->options.numrx, ®s->RBRDU); - writel(vptr->rx.pool_dma, ®s->RDBaseLo); - writew(0, ®s->RDIdx); - writew(vptr->options.numrx - 1, ®s->RDCSize); -} - -/** - * velocity_get_opt_media_mode - get media selection - * @vptr: velocity adapter - * - * Get the media mode stored in EEPROM or module options and load - * mii_status accordingly. The requested link state information - * is also returned. - */ -static u32 velocity_get_opt_media_mode(struct velocity_info *vptr) -{ - u32 status = 0; - - switch (vptr->options.spd_dpx) { - case SPD_DPX_AUTO: - status = VELOCITY_AUTONEG_ENABLE; - break; - case SPD_DPX_100_FULL: - status = VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL; - break; - case SPD_DPX_10_FULL: - status = VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL; - break; - case SPD_DPX_100_HALF: - status = VELOCITY_SPEED_100; - break; - case SPD_DPX_10_HALF: - status = VELOCITY_SPEED_10; - break; - case SPD_DPX_1000_FULL: - status = VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL; - break; - } - vptr->mii_status = status; - return status; -} - -/** - * safe_disable_mii_autopoll - autopoll off - * @regs: velocity registers - * - * Turn off the autopoll and wait for it to disable on the chip - */ -static void safe_disable_mii_autopoll(struct mac_regs __iomem *regs) -{ - u16 ww; - - /* turn off MAUTO */ - writeb(0, ®s->MIICR); - for (ww = 0; ww < W_MAX_TIMEOUT; ww++) { - udelay(1); - if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR)) - break; - } -} - -/** - * enable_mii_autopoll - turn on autopolling - * @regs: velocity registers - * - * Enable the MII link status autopoll feature on the Velocity - * hardware. Wait for it to enable. - */ -static void enable_mii_autopoll(struct mac_regs __iomem *regs) -{ - int ii; - - writeb(0, &(regs->MIICR)); - writeb(MIIADR_SWMPL, ®s->MIIADR); - - for (ii = 0; ii < W_MAX_TIMEOUT; ii++) { - udelay(1); - if (BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR)) - break; - } - - writeb(MIICR_MAUTO, ®s->MIICR); - - for (ii = 0; ii < W_MAX_TIMEOUT; ii++) { - udelay(1); - if (!BYTE_REG_BITS_IS_ON(MIISR_MIDLE, ®s->MIISR)) - break; - } - -} - -/** - * velocity_mii_read - read MII data - * @regs: velocity registers - * @index: MII register index - * @data: buffer for received data - * - * Perform a single read of an MII 16bit register. Returns zero - * on success or -ETIMEDOUT if the PHY did not respond. - */ -static int velocity_mii_read(struct mac_regs __iomem *regs, u8 index, u16 *data) -{ - u16 ww; - - /* - * Disable MIICR_MAUTO, so that mii addr can be set normally - */ - safe_disable_mii_autopoll(regs); - - writeb(index, ®s->MIIADR); - - BYTE_REG_BITS_ON(MIICR_RCMD, ®s->MIICR); - - for (ww = 0; ww < W_MAX_TIMEOUT; ww++) { - if (!(readb(®s->MIICR) & MIICR_RCMD)) - break; - } - - *data = readw(®s->MIIDATA); - - enable_mii_autopoll(regs); - if (ww == W_MAX_TIMEOUT) - return -ETIMEDOUT; - return 0; -} - -/** - * mii_check_media_mode - check media state - * @regs: velocity registers - * - * Check the current MII status and determine the link status - * accordingly - */ -static u32 mii_check_media_mode(struct mac_regs __iomem *regs) -{ - u32 status = 0; - u16 ANAR; - - if (!MII_REG_BITS_IS_ON(BMSR_LSTATUS, MII_BMSR, regs)) - status |= VELOCITY_LINK_FAIL; - - if (MII_REG_BITS_IS_ON(ADVERTISE_1000FULL, MII_CTRL1000, regs)) - status |= VELOCITY_SPEED_1000 | VELOCITY_DUPLEX_FULL; - else if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF, MII_CTRL1000, regs)) - status |= (VELOCITY_SPEED_1000); - else { - velocity_mii_read(regs, MII_ADVERTISE, &ANAR); - if (ANAR & ADVERTISE_100FULL) - status |= (VELOCITY_SPEED_100 | VELOCITY_DUPLEX_FULL); - else if (ANAR & ADVERTISE_100HALF) - status |= VELOCITY_SPEED_100; - else if (ANAR & ADVERTISE_10FULL) - status |= (VELOCITY_SPEED_10 | VELOCITY_DUPLEX_FULL); - else - status |= (VELOCITY_SPEED_10); - } - - if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) { - velocity_mii_read(regs, MII_ADVERTISE, &ANAR); - if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) - == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) { - if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs)) - status |= VELOCITY_AUTONEG_ENABLE; - } - } - - return status; -} - -/** - * velocity_mii_write - write MII data - * @regs: velocity registers - * @index: MII register index - * @data: 16bit data for the MII register - * - * Perform a single write to an MII 16bit register. Returns zero - * on success or -ETIMEDOUT if the PHY did not respond. - */ -static int velocity_mii_write(struct mac_regs __iomem *regs, u8 mii_addr, u16 data) -{ - u16 ww; - - /* - * Disable MIICR_MAUTO, so that mii addr can be set normally - */ - safe_disable_mii_autopoll(regs); - - /* MII reg offset */ - writeb(mii_addr, ®s->MIIADR); - /* set MII data */ - writew(data, ®s->MIIDATA); - - /* turn on MIICR_WCMD */ - BYTE_REG_BITS_ON(MIICR_WCMD, ®s->MIICR); - - /* W_MAX_TIMEOUT is the timeout period */ - for (ww = 0; ww < W_MAX_TIMEOUT; ww++) { - udelay(5); - if (!(readb(®s->MIICR) & MIICR_WCMD)) - break; - } - enable_mii_autopoll(regs); - - if (ww == W_MAX_TIMEOUT) - return -ETIMEDOUT; - return 0; -} - -/** - * set_mii_flow_control - flow control setup - * @vptr: velocity interface - * - * Set up the flow control on this interface according to - * the supplied user/eeprom options. - */ -static void set_mii_flow_control(struct velocity_info *vptr) -{ - /*Enable or Disable PAUSE in ANAR */ - switch (vptr->options.flow_cntl) { - case FLOW_CNTL_TX: - MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs); - MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs); - break; - - case FLOW_CNTL_RX: - MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs); - MII_REG_BITS_ON(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs); - break; - - case FLOW_CNTL_TX_RX: - MII_REG_BITS_ON(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs); - MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs); - break; - - case FLOW_CNTL_DISABLE: - MII_REG_BITS_OFF(ADVERTISE_PAUSE_CAP, MII_ADVERTISE, vptr->mac_regs); - MII_REG_BITS_OFF(ADVERTISE_PAUSE_ASYM, MII_ADVERTISE, vptr->mac_regs); - break; - default: - break; - } -} - -/** - * mii_set_auto_on - autonegotiate on - * @vptr: velocity - * - * Enable autonegotation on this interface - */ -static void mii_set_auto_on(struct velocity_info *vptr) -{ - if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs)) - MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs); - else - MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); -} - -static u32 check_connection_type(struct mac_regs __iomem *regs) -{ - u32 status = 0; - u8 PHYSR0; - u16 ANAR; - PHYSR0 = readb(®s->PHYSR0); - - /* - if (!(PHYSR0 & PHYSR0_LINKGD)) - status|=VELOCITY_LINK_FAIL; - */ - - if (PHYSR0 & PHYSR0_FDPX) - status |= VELOCITY_DUPLEX_FULL; - - if (PHYSR0 & PHYSR0_SPDG) - status |= VELOCITY_SPEED_1000; - else if (PHYSR0 & PHYSR0_SPD10) - status |= VELOCITY_SPEED_10; - else - status |= VELOCITY_SPEED_100; - - if (MII_REG_BITS_IS_ON(BMCR_ANENABLE, MII_BMCR, regs)) { - velocity_mii_read(regs, MII_ADVERTISE, &ANAR); - if ((ANAR & (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) - == (ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)) { - if (MII_REG_BITS_IS_ON(ADVERTISE_1000HALF | ADVERTISE_1000FULL, MII_CTRL1000, regs)) - status |= VELOCITY_AUTONEG_ENABLE; - } - } - - return status; -} - -/** - * velocity_set_media_mode - set media mode - * @mii_status: old MII link state - * - * Check the media link state and configure the flow control - * PHY and also velocity hardware setup accordingly. In particular - * we need to set up CD polling and frame bursting. - */ -static int velocity_set_media_mode(struct velocity_info *vptr, u32 mii_status) -{ - u32 curr_status; - struct mac_regs __iomem *regs = vptr->mac_regs; - - vptr->mii_status = mii_check_media_mode(vptr->mac_regs); - curr_status = vptr->mii_status & (~VELOCITY_LINK_FAIL); - - /* Set mii link status */ - set_mii_flow_control(vptr); - - /* - Check if new status is consistent with current status - if (((mii_status & curr_status) & VELOCITY_AUTONEG_ENABLE) || - (mii_status==curr_status)) { - vptr->mii_status=mii_check_media_mode(vptr->mac_regs); - vptr->mii_status=check_connection_type(vptr->mac_regs); - VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity link no change\n"); - return 0; - } - */ - - if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) - MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs); - - /* - * If connection type is AUTO - */ - if (mii_status & VELOCITY_AUTONEG_ENABLE) { - VELOCITY_PRT(MSG_LEVEL_INFO, "Velocity is AUTO mode\n"); - /* clear force MAC mode bit */ - BYTE_REG_BITS_OFF(CHIPGCR_FCMODE, ®s->CHIPGCR); - /* set duplex mode of MAC according to duplex mode of MII */ - MII_REG_BITS_ON(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF, MII_ADVERTISE, vptr->mac_regs); - MII_REG_BITS_ON(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs); - MII_REG_BITS_ON(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); - - /* enable AUTO-NEGO mode */ - mii_set_auto_on(vptr); - } else { - u16 CTRL1000; - u16 ANAR; - u8 CHIPGCR; - - /* - * 1. if it's 3119, disable frame bursting in halfduplex mode - * and enable it in fullduplex mode - * 2. set correct MII/GMII and half/full duplex mode in CHIPGCR - * 3. only enable CD heart beat counter in 10HD mode - */ - - /* set force MAC mode bit */ - BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR); - - CHIPGCR = readb(®s->CHIPGCR); - - if (mii_status & VELOCITY_SPEED_1000) - CHIPGCR |= CHIPGCR_FCGMII; - else - CHIPGCR &= ~CHIPGCR_FCGMII; - - if (mii_status & VELOCITY_DUPLEX_FULL) { - CHIPGCR |= CHIPGCR_FCFDX; - writeb(CHIPGCR, ®s->CHIPGCR); - VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced full mode\n"); - if (vptr->rev_id < REV_ID_VT3216_A0) - BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR); - } else { - CHIPGCR &= ~CHIPGCR_FCFDX; - VELOCITY_PRT(MSG_LEVEL_INFO, "set Velocity to forced half mode\n"); - writeb(CHIPGCR, ®s->CHIPGCR); - if (vptr->rev_id < REV_ID_VT3216_A0) - BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR); - } - - velocity_mii_read(vptr->mac_regs, MII_CTRL1000, &CTRL1000); - CTRL1000 &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF); - if ((mii_status & VELOCITY_SPEED_1000) && - (mii_status & VELOCITY_DUPLEX_FULL)) { - CTRL1000 |= ADVERTISE_1000FULL; - } - velocity_mii_write(vptr->mac_regs, MII_CTRL1000, CTRL1000); - - if (!(mii_status & VELOCITY_DUPLEX_FULL) && (mii_status & VELOCITY_SPEED_10)) - BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG); - else - BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG); - - /* MII_REG_BITS_OFF(BMCR_SPEED1000, MII_BMCR, vptr->mac_regs); */ - velocity_mii_read(vptr->mac_regs, MII_ADVERTISE, &ANAR); - ANAR &= (~(ADVERTISE_100FULL | ADVERTISE_100HALF | ADVERTISE_10FULL | ADVERTISE_10HALF)); - if (mii_status & VELOCITY_SPEED_100) { - if (mii_status & VELOCITY_DUPLEX_FULL) - ANAR |= ADVERTISE_100FULL; - else - ANAR |= ADVERTISE_100HALF; - } else if (mii_status & VELOCITY_SPEED_10) { - if (mii_status & VELOCITY_DUPLEX_FULL) - ANAR |= ADVERTISE_10FULL; - else - ANAR |= ADVERTISE_10HALF; - } - velocity_mii_write(vptr->mac_regs, MII_ADVERTISE, ANAR); - /* enable AUTO-NEGO mode */ - mii_set_auto_on(vptr); - /* MII_REG_BITS_ON(BMCR_ANENABLE, MII_BMCR, vptr->mac_regs); */ - } - /* vptr->mii_status=mii_check_media_mode(vptr->mac_regs); */ - /* vptr->mii_status=check_connection_type(vptr->mac_regs); */ - return VELOCITY_LINK_CHANGE; -} - -/** - * velocity_print_link_status - link status reporting - * @vptr: velocity to report on - * - * Turn the link status of the velocity card into a kernel log - * description of the new link state, detailing speed and duplex - * status - */ -static void velocity_print_link_status(struct velocity_info *vptr) -{ - - if (vptr->mii_status & VELOCITY_LINK_FAIL) { - VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: failed to detect cable link\n", vptr->dev->name); - } else if (vptr->options.spd_dpx == SPD_DPX_AUTO) { - VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link auto-negotiation", vptr->dev->name); - - if (vptr->mii_status & VELOCITY_SPEED_1000) - VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps"); - else if (vptr->mii_status & VELOCITY_SPEED_100) - VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps"); - else - VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps"); - - if (vptr->mii_status & VELOCITY_DUPLEX_FULL) - VELOCITY_PRT(MSG_LEVEL_INFO, " full duplex\n"); - else - VELOCITY_PRT(MSG_LEVEL_INFO, " half duplex\n"); - } else { - VELOCITY_PRT(MSG_LEVEL_INFO, KERN_NOTICE "%s: Link forced", vptr->dev->name); - switch (vptr->options.spd_dpx) { - case SPD_DPX_1000_FULL: - VELOCITY_PRT(MSG_LEVEL_INFO, " speed 1000M bps full duplex\n"); - break; - case SPD_DPX_100_HALF: - VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps half duplex\n"); - break; - case SPD_DPX_100_FULL: - VELOCITY_PRT(MSG_LEVEL_INFO, " speed 100M bps full duplex\n"); - break; - case SPD_DPX_10_HALF: - VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps half duplex\n"); - break; - case SPD_DPX_10_FULL: - VELOCITY_PRT(MSG_LEVEL_INFO, " speed 10M bps full duplex\n"); - break; - default: - break; - } - } -} - -/** - * enable_flow_control_ability - flow control - * @vptr: veloity to configure - * - * Set up flow control according to the flow control options - * determined by the eeprom/configuration. - */ -static void enable_flow_control_ability(struct velocity_info *vptr) -{ - - struct mac_regs __iomem *regs = vptr->mac_regs; - - switch (vptr->options.flow_cntl) { - - case FLOW_CNTL_DEFAULT: - if (BYTE_REG_BITS_IS_ON(PHYSR0_RXFLC, ®s->PHYSR0)) - writel(CR0_FDXRFCEN, ®s->CR0Set); - else - writel(CR0_FDXRFCEN, ®s->CR0Clr); - - if (BYTE_REG_BITS_IS_ON(PHYSR0_TXFLC, ®s->PHYSR0)) - writel(CR0_FDXTFCEN, ®s->CR0Set); - else - writel(CR0_FDXTFCEN, ®s->CR0Clr); - break; - - case FLOW_CNTL_TX: - writel(CR0_FDXTFCEN, ®s->CR0Set); - writel(CR0_FDXRFCEN, ®s->CR0Clr); - break; - - case FLOW_CNTL_RX: - writel(CR0_FDXRFCEN, ®s->CR0Set); - writel(CR0_FDXTFCEN, ®s->CR0Clr); - break; - - case FLOW_CNTL_TX_RX: - writel(CR0_FDXTFCEN, ®s->CR0Set); - writel(CR0_FDXRFCEN, ®s->CR0Set); - break; - - case FLOW_CNTL_DISABLE: - writel(CR0_FDXRFCEN, ®s->CR0Clr); - writel(CR0_FDXTFCEN, ®s->CR0Clr); - break; - - default: - break; - } - -} - -/** - * velocity_soft_reset - soft reset - * @vptr: velocity to reset - * - * Kick off a soft reset of the velocity adapter and then poll - * until the reset sequence has completed before returning. - */ -static int velocity_soft_reset(struct velocity_info *vptr) -{ - struct mac_regs __iomem *regs = vptr->mac_regs; - int i = 0; - - writel(CR0_SFRST, ®s->CR0Set); - - for (i = 0; i < W_MAX_TIMEOUT; i++) { - udelay(5); - if (!DWORD_REG_BITS_IS_ON(CR0_SFRST, ®s->CR0Set)) - break; - } - - if (i == W_MAX_TIMEOUT) { - writel(CR0_FORSRST, ®s->CR0Set); - /* FIXME: PCI POSTING */ - /* delay 2ms */ - mdelay(2); - } - return 0; -} - -/** - * velocity_set_multi - filter list change callback - * @dev: network device - * - * Called by the network layer when the filter lists need to change - * for a velocity adapter. Reload the CAMs with the new address - * filter ruleset. - */ -static void velocity_set_multi(struct net_device *dev) -{ - struct velocity_info *vptr = netdev_priv(dev); - struct mac_regs __iomem *regs = vptr->mac_regs; - u8 rx_mode; - int i; - struct netdev_hw_addr *ha; - - if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ - writel(0xffffffff, ®s->MARCAM[0]); - writel(0xffffffff, ®s->MARCAM[4]); - rx_mode = (RCR_AM | RCR_AB | RCR_PROM); - } else if ((netdev_mc_count(dev) > vptr->multicast_limit) || - (dev->flags & IFF_ALLMULTI)) { - writel(0xffffffff, ®s->MARCAM[0]); - writel(0xffffffff, ®s->MARCAM[4]); - rx_mode = (RCR_AM | RCR_AB); - } else { - int offset = MCAM_SIZE - vptr->multicast_limit; - mac_get_cam_mask(regs, vptr->mCAMmask); - - i = 0; - netdev_for_each_mc_addr(ha, dev) { - mac_set_cam(regs, i + offset, ha->addr); - vptr->mCAMmask[(offset + i) / 8] |= 1 << ((offset + i) & 7); - i++; - } - - mac_set_cam_mask(regs, vptr->mCAMmask); - rx_mode = RCR_AM | RCR_AB | RCR_AP; - } - if (dev->mtu > 1500) - rx_mode |= RCR_AL; - - BYTE_REG_BITS_ON(rx_mode, ®s->RCR); - -} - -/* - * MII access , media link mode setting functions - */ - -/** - * mii_init - set up MII - * @vptr: velocity adapter - * @mii_status: links tatus - * - * Set up the PHY for the current link state. - */ -static void mii_init(struct velocity_info *vptr, u32 mii_status) -{ - u16 BMCR; - - switch (PHYID_GET_PHY_ID(vptr->phy_id)) { - case PHYID_CICADA_CS8201: - /* - * Reset to hardware default - */ - MII_REG_BITS_OFF((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs); - /* - * Turn on ECHODIS bit in NWay-forced full mode and turn it - * off it in NWay-forced half mode for NWay-forced v.s. - * legacy-forced issue. - */ - if (vptr->mii_status & VELOCITY_DUPLEX_FULL) - MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs); - else - MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs); - /* - * Turn on Link/Activity LED enable bit for CIS8201 - */ - MII_REG_BITS_ON(PLED_LALBE, MII_TPISTATUS, vptr->mac_regs); - break; - case PHYID_VT3216_32BIT: - case PHYID_VT3216_64BIT: - /* - * Reset to hardware default - */ - MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs); - /* - * Turn on ECHODIS bit in NWay-forced full mode and turn it - * off it in NWay-forced half mode for NWay-forced v.s. - * legacy-forced issue - */ - if (vptr->mii_status & VELOCITY_DUPLEX_FULL) - MII_REG_BITS_ON(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs); - else - MII_REG_BITS_OFF(TCSR_ECHODIS, MII_SREVISION, vptr->mac_regs); - break; - - case PHYID_MARVELL_1000: - case PHYID_MARVELL_1000S: - /* - * Assert CRS on Transmit - */ - MII_REG_BITS_ON(PSCR_ACRSTX, MII_REG_PSCR, vptr->mac_regs); - /* - * Reset to hardware default - */ - MII_REG_BITS_ON((ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP), MII_ADVERTISE, vptr->mac_regs); - break; - default: - ; - } - velocity_mii_read(vptr->mac_regs, MII_BMCR, &BMCR); - if (BMCR & BMCR_ISOLATE) { - BMCR &= ~BMCR_ISOLATE; - velocity_mii_write(vptr->mac_regs, MII_BMCR, BMCR); - } -} - -/** - * setup_queue_timers - Setup interrupt timers - * - * Setup interrupt frequency during suppression (timeout if the frame - * count isn't filled). - */ -static void setup_queue_timers(struct velocity_info *vptr) -{ - /* Only for newer revisions */ - if (vptr->rev_id >= REV_ID_VT3216_A0) { - u8 txqueue_timer = 0; - u8 rxqueue_timer = 0; - - if (vptr->mii_status & (VELOCITY_SPEED_1000 | - VELOCITY_SPEED_100)) { - txqueue_timer = vptr->options.txqueue_timer; - rxqueue_timer = vptr->options.rxqueue_timer; - } - - writeb(txqueue_timer, &vptr->mac_regs->TQETMR); - writeb(rxqueue_timer, &vptr->mac_regs->RQETMR); - } -} - -/** - * setup_adaptive_interrupts - Setup interrupt suppression - * - * @vptr velocity adapter - * - * The velocity is able to suppress interrupt during high interrupt load. - * This function turns on that feature. - */ -static void setup_adaptive_interrupts(struct velocity_info *vptr) -{ - struct mac_regs __iomem *regs = vptr->mac_regs; - u16 tx_intsup = vptr->options.tx_intsup; - u16 rx_intsup = vptr->options.rx_intsup; - - /* Setup default interrupt mask (will be changed below) */ - vptr->int_mask = INT_MASK_DEF; - - /* Set Tx Interrupt Suppression Threshold */ - writeb(CAMCR_PS0, ®s->CAMCR); - if (tx_intsup != 0) { - vptr->int_mask &= ~(ISR_PTXI | ISR_PTX0I | ISR_PTX1I | - ISR_PTX2I | ISR_PTX3I); - writew(tx_intsup, ®s->ISRCTL); - } else - writew(ISRCTL_TSUPDIS, ®s->ISRCTL); - - /* Set Rx Interrupt Suppression Threshold */ - writeb(CAMCR_PS1, ®s->CAMCR); - if (rx_intsup != 0) { - vptr->int_mask &= ~ISR_PRXI; - writew(rx_intsup, ®s->ISRCTL); - } else - writew(ISRCTL_RSUPDIS, ®s->ISRCTL); - - /* Select page to interrupt hold timer */ - writeb(0, ®s->CAMCR); -} - -/** - * velocity_init_registers - initialise MAC registers - * @vptr: velocity to init - * @type: type of initialisation (hot or cold) - * - * Initialise the MAC on a reset or on first set up on the - * hardware. - */ -static void velocity_init_registers(struct velocity_info *vptr, - enum velocity_init_type type) -{ - struct mac_regs __iomem *regs = vptr->mac_regs; - int i, mii_status; - - mac_wol_reset(regs); - - switch (type) { - case VELOCITY_INIT_RESET: - case VELOCITY_INIT_WOL: - - netif_stop_queue(vptr->dev); - - /* - * Reset RX to prevent RX pointer not on the 4X location - */ - velocity_rx_reset(vptr); - mac_rx_queue_run(regs); - mac_rx_queue_wake(regs); - - mii_status = velocity_get_opt_media_mode(vptr); - if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) { - velocity_print_link_status(vptr); - if (!(vptr->mii_status & VELOCITY_LINK_FAIL)) - netif_wake_queue(vptr->dev); - } - - enable_flow_control_ability(vptr); - - mac_clear_isr(regs); - writel(CR0_STOP, ®s->CR0Clr); - writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), - ®s->CR0Set); - - break; - - case VELOCITY_INIT_COLD: - default: - /* - * Do reset - */ - velocity_soft_reset(vptr); - mdelay(5); - - mac_eeprom_reload(regs); - for (i = 0; i < 6; i++) - writeb(vptr->dev->dev_addr[i], &(regs->PAR[i])); - - /* - * clear Pre_ACPI bit. - */ - BYTE_REG_BITS_OFF(CFGA_PACPI, &(regs->CFGA)); - mac_set_rx_thresh(regs, vptr->options.rx_thresh); - mac_set_dma_length(regs, vptr->options.DMA_length); - - writeb(WOLCFG_SAM | WOLCFG_SAB, ®s->WOLCFGSet); - /* - * Back off algorithm use original IEEE standard - */ - BYTE_REG_BITS_SET(CFGB_OFSET, (CFGB_CRANDOM | CFGB_CAP | CFGB_MBA | CFGB_BAKOPT), ®s->CFGB); - - /* - * Init CAM filter - */ - velocity_init_cam_filter(vptr); - - /* - * Set packet filter: Receive directed and broadcast address - */ - velocity_set_multi(vptr->dev); - - /* - * Enable MII auto-polling - */ - enable_mii_autopoll(regs); - - setup_adaptive_interrupts(vptr); - - writel(vptr->rx.pool_dma, ®s->RDBaseLo); - writew(vptr->options.numrx - 1, ®s->RDCSize); - mac_rx_queue_run(regs); - mac_rx_queue_wake(regs); - - writew(vptr->options.numtx - 1, ®s->TDCSize); - - for (i = 0; i < vptr->tx.numq; i++) { - writel(vptr->tx.pool_dma[i], ®s->TDBaseLo[i]); - mac_tx_queue_run(regs, i); - } - - init_flow_control_register(vptr); - - writel(CR0_STOP, ®s->CR0Clr); - writel((CR0_DPOLL | CR0_TXON | CR0_RXON | CR0_STRT), ®s->CR0Set); - - mii_status = velocity_get_opt_media_mode(vptr); - netif_stop_queue(vptr->dev); - - mii_init(vptr, mii_status); - - if (velocity_set_media_mode(vptr, mii_status) != VELOCITY_LINK_CHANGE) { - velocity_print_link_status(vptr); - if (!(vptr->mii_status & VELOCITY_LINK_FAIL)) - netif_wake_queue(vptr->dev); - } - - enable_flow_control_ability(vptr); - mac_hw_mibs_init(regs); - mac_write_int_mask(vptr->int_mask, regs); - mac_clear_isr(regs); - - } -} - -static void velocity_give_many_rx_descs(struct velocity_info *vptr) -{ - struct mac_regs __iomem *regs = vptr->mac_regs; - int avail, dirty, unusable; - - /* - * RD number must be equal to 4X per hardware spec - * (programming guide rev 1.20, p.13) - */ - if (vptr->rx.filled < 4) - return; - - wmb(); - - unusable = vptr->rx.filled & 0x0003; - dirty = vptr->rx.dirty - unusable; - for (avail = vptr->rx.filled & 0xfffc; avail; avail--) { - dirty = (dirty > 0) ? dirty - 1 : vptr->options.numrx - 1; - vptr->rx.ring[dirty].rdesc0.len |= OWNED_BY_NIC; - } - - writew(vptr->rx.filled & 0xfffc, ®s->RBRDU); - vptr->rx.filled = unusable; -} - -/** - * velocity_init_dma_rings - set up DMA rings - * @vptr: Velocity to set up - * - * Allocate PCI mapped DMA rings for the receive and transmit layer - * to use. - */ -static int velocity_init_dma_rings(struct velocity_info *vptr) -{ - struct velocity_opt *opt = &vptr->options; - const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc); - const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc); - struct pci_dev *pdev = vptr->pdev; - dma_addr_t pool_dma; - void *pool; - unsigned int i; - - /* - * Allocate all RD/TD rings a single pool. - * - * pci_alloc_consistent() fulfills the requirement for 64 bytes - * alignment - */ - pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->tx.numq + - rx_ring_size, &pool_dma); - if (!pool) { - dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n", - vptr->dev->name); - return -ENOMEM; - } - - vptr->rx.ring = pool; - vptr->rx.pool_dma = pool_dma; - - pool += rx_ring_size; - pool_dma += rx_ring_size; - - for (i = 0; i < vptr->tx.numq; i++) { - vptr->tx.rings[i] = pool; - vptr->tx.pool_dma[i] = pool_dma; - pool += tx_ring_size; - pool_dma += tx_ring_size; - } - - return 0; -} - -static void velocity_set_rxbufsize(struct velocity_info *vptr, int mtu) -{ - vptr->rx.buf_sz = (mtu <= ETH_DATA_LEN) ? PKT_BUF_SZ : mtu + 32; -} - -/** - * velocity_alloc_rx_buf - allocate aligned receive buffer - * @vptr: velocity - * @idx: ring index - * - * Allocate a new full sized buffer for the reception of a frame and - * map it into PCI space for the hardware to use. The hardware - * requires *64* byte alignment of the buffer which makes life - * less fun than would be ideal. - */ -static int velocity_alloc_rx_buf(struct velocity_info *vptr, int idx) -{ - struct rx_desc *rd = &(vptr->rx.ring[idx]); - struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]); - - rd_info->skb = dev_alloc_skb(vptr->rx.buf_sz + 64); - if (rd_info->skb == NULL) - return -ENOMEM; - - /* - * Do the gymnastics to get the buffer head for data at - * 64byte alignment. - */ - skb_reserve(rd_info->skb, - 64 - ((unsigned long) rd_info->skb->data & 63)); - rd_info->skb_dma = pci_map_single(vptr->pdev, rd_info->skb->data, - vptr->rx.buf_sz, PCI_DMA_FROMDEVICE); - - /* - * Fill in the descriptor to match - */ - - *((u32 *) & (rd->rdesc0)) = 0; - rd->size = cpu_to_le16(vptr->rx.buf_sz) | RX_INTEN; - rd->pa_low = cpu_to_le32(rd_info->skb_dma); - rd->pa_high = 0; - return 0; -} - - -static int velocity_rx_refill(struct velocity_info *vptr) -{ - int dirty = vptr->rx.dirty, done = 0; - - do { - struct rx_desc *rd = vptr->rx.ring + dirty; - - /* Fine for an all zero Rx desc at init time as well */ - if (rd->rdesc0.len & OWNED_BY_NIC) - break; - - if (!vptr->rx.info[dirty].skb) { - if (velocity_alloc_rx_buf(vptr, dirty) < 0) - break; - } - done++; - dirty = (dirty < vptr->options.numrx - 1) ? dirty + 1 : 0; - } while (dirty != vptr->rx.curr); - - if (done) { - vptr->rx.dirty = dirty; - vptr->rx.filled += done; - } - - return done; -} - -/** - * velocity_free_rd_ring - free receive ring - * @vptr: velocity to clean up - * - * Free the receive buffers for each ring slot and any - * attached socket buffers that need to go away. - */ -static void velocity_free_rd_ring(struct velocity_info *vptr) -{ - int i; - - if (vptr->rx.info == NULL) - return; - - for (i = 0; i < vptr->options.numrx; i++) { - struct velocity_rd_info *rd_info = &(vptr->rx.info[i]); - struct rx_desc *rd = vptr->rx.ring + i; - - memset(rd, 0, sizeof(*rd)); - - if (!rd_info->skb) - continue; - pci_unmap_single(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz, - PCI_DMA_FROMDEVICE); - rd_info->skb_dma = 0; - - dev_kfree_skb(rd_info->skb); - rd_info->skb = NULL; - } - - kfree(vptr->rx.info); - vptr->rx.info = NULL; -} - -/** - * velocity_init_rd_ring - set up receive ring - * @vptr: velocity to configure - * - * Allocate and set up the receive buffers for each ring slot and - * assign them to the network adapter. - */ -static int velocity_init_rd_ring(struct velocity_info *vptr) -{ - int ret = -ENOMEM; - - vptr->rx.info = kcalloc(vptr->options.numrx, - sizeof(struct velocity_rd_info), GFP_KERNEL); - if (!vptr->rx.info) - goto out; - - velocity_init_rx_ring_indexes(vptr); - - if (velocity_rx_refill(vptr) != vptr->options.numrx) { - VELOCITY_PRT(MSG_LEVEL_ERR, KERN_ERR - "%s: failed to allocate RX buffer.\n", vptr->dev->name); - velocity_free_rd_ring(vptr); - goto out; - } - - ret = 0; -out: - return ret; -} - -/** - * velocity_init_td_ring - set up transmit ring - * @vptr: velocity - * - * Set up the transmit ring and chain the ring pointers together. - * Returns zero on success or a negative posix errno code for - * failure. - */ -static int velocity_init_td_ring(struct velocity_info *vptr) -{ - int j; - - /* Init the TD ring entries */ - for (j = 0; j < vptr->tx.numq; j++) { - - vptr->tx.infos[j] = kcalloc(vptr->options.numtx, - sizeof(struct velocity_td_info), - GFP_KERNEL); - if (!vptr->tx.infos[j]) { - while (--j >= 0) - kfree(vptr->tx.infos[j]); - return -ENOMEM; - } - - vptr->tx.tail[j] = vptr->tx.curr[j] = vptr->tx.used[j] = 0; - } - return 0; -} - -/** - * velocity_free_dma_rings - free PCI ring pointers - * @vptr: Velocity to free from - * - * Clean up the PCI ring buffers allocated to this velocity. - */ -static void velocity_free_dma_rings(struct velocity_info *vptr) -{ - const int size = vptr->options.numrx * sizeof(struct rx_desc) + - vptr->options.numtx * sizeof(struct tx_desc) * vptr->tx.numq; - - pci_free_consistent(vptr->pdev, size, vptr->rx.ring, vptr->rx.pool_dma); -} - -static int velocity_init_rings(struct velocity_info *vptr, int mtu) -{ - int ret; - - velocity_set_rxbufsize(vptr, mtu); - - ret = velocity_init_dma_rings(vptr); - if (ret < 0) - goto out; - - ret = velocity_init_rd_ring(vptr); - if (ret < 0) - goto err_free_dma_rings_0; - - ret = velocity_init_td_ring(vptr); - if (ret < 0) - goto err_free_rd_ring_1; -out: - return ret; - -err_free_rd_ring_1: - velocity_free_rd_ring(vptr); -err_free_dma_rings_0: - velocity_free_dma_rings(vptr); - goto out; -} - -/** - * velocity_free_tx_buf - free transmit buffer - * @vptr: velocity - * @tdinfo: buffer - * - * Release an transmit buffer. If the buffer was preallocated then - * recycle it, if not then unmap the buffer. - */ -static void velocity_free_tx_buf(struct velocity_info *vptr, - struct velocity_td_info *tdinfo, struct tx_desc *td) -{ - struct sk_buff *skb = tdinfo->skb; - - /* - * Don't unmap the pre-allocated tx_bufs - */ - if (tdinfo->skb_dma) { - int i; - - for (i = 0; i < tdinfo->nskb_dma; i++) { - size_t pktlen = max_t(size_t, skb->len, ETH_ZLEN); - - /* For scatter-gather */ - if (skb_shinfo(skb)->nr_frags > 0) - pktlen = max_t(size_t, pktlen, - td->td_buf[i].size & ~TD_QUEUE); - - pci_unmap_single(vptr->pdev, tdinfo->skb_dma[i], - le16_to_cpu(pktlen), PCI_DMA_TODEVICE); - } - } - dev_kfree_skb_irq(skb); - tdinfo->skb = NULL; -} - -/* - * FIXME: could we merge this with velocity_free_tx_buf ? - */ -static void velocity_free_td_ring_entry(struct velocity_info *vptr, - int q, int n) -{ - struct velocity_td_info *td_info = &(vptr->tx.infos[q][n]); - int i; - - if (td_info == NULL) - return; - - if (td_info->skb) { - for (i = 0; i < td_info->nskb_dma; i++) { - if (td_info->skb_dma[i]) { - pci_unmap_single(vptr->pdev, td_info->skb_dma[i], - td_info->skb->len, PCI_DMA_TODEVICE); - td_info->skb_dma[i] = 0; - } - } - dev_kfree_skb(td_info->skb); - td_info->skb = NULL; - } -} - -/** - * velocity_free_td_ring - free td ring - * @vptr: velocity - * - * Free up the transmit ring for this particular velocity adapter. - * We free the ring contents but not the ring itself. - */ -static void velocity_free_td_ring(struct velocity_info *vptr) -{ - int i, j; - - for (j = 0; j < vptr->tx.numq; j++) { - if (vptr->tx.infos[j] == NULL) - continue; - for (i = 0; i < vptr->options.numtx; i++) - velocity_free_td_ring_entry(vptr, j, i); - - kfree(vptr->tx.infos[j]); - vptr->tx.infos[j] = NULL; - } -} - -static void velocity_free_rings(struct velocity_info *vptr) -{ - velocity_free_td_ring(vptr); - velocity_free_rd_ring(vptr); - velocity_free_dma_rings(vptr); -} - -/** - * velocity_error - handle error from controller - * @vptr: velocity - * @status: card status - * - * Process an error report from the hardware and attempt to recover - * the card itself. At the moment we cannot recover from some - * theoretically impossible errors but this could be fixed using - * the pci_device_failed logic to bounce the hardware - * - */ -static void velocity_error(struct velocity_info *vptr, int status) -{ - - if (status & ISR_TXSTLI) { - struct mac_regs __iomem *regs = vptr->mac_regs; - - printk(KERN_ERR "TD structure error TDindex=%hx\n", readw(®s->TDIdx[0])); - BYTE_REG_BITS_ON(TXESR_TDSTR, ®s->TXESR); - writew(TRDCSR_RUN, ®s->TDCSRClr); - netif_stop_queue(vptr->dev); - - /* FIXME: port over the pci_device_failed code and use it - here */ - } - - if (status & ISR_SRCI) { - struct mac_regs __iomem *regs = vptr->mac_regs; - int linked; - - if (vptr->options.spd_dpx == SPD_DPX_AUTO) { - vptr->mii_status = check_connection_type(regs); - - /* - * If it is a 3119, disable frame bursting in - * halfduplex mode and enable it in fullduplex - * mode - */ - if (vptr->rev_id < REV_ID_VT3216_A0) { - if (vptr->mii_status & VELOCITY_DUPLEX_FULL) - BYTE_REG_BITS_ON(TCR_TB2BDIS, ®s->TCR); - else - BYTE_REG_BITS_OFF(TCR_TB2BDIS, ®s->TCR); - } - /* - * Only enable CD heart beat counter in 10HD mode - */ - if (!(vptr->mii_status & VELOCITY_DUPLEX_FULL) && (vptr->mii_status & VELOCITY_SPEED_10)) - BYTE_REG_BITS_OFF(TESTCFG_HBDIS, ®s->TESTCFG); - else - BYTE_REG_BITS_ON(TESTCFG_HBDIS, ®s->TESTCFG); - - setup_queue_timers(vptr); - } - /* - * Get link status from PHYSR0 - */ - linked = readb(®s->PHYSR0) & PHYSR0_LINKGD; - - if (linked) { - vptr->mii_status &= ~VELOCITY_LINK_FAIL; - netif_carrier_on(vptr->dev); - } else { - vptr->mii_status |= VELOCITY_LINK_FAIL; - netif_carrier_off(vptr->dev); - } - - velocity_print_link_status(vptr); - enable_flow_control_ability(vptr); - - /* - * Re-enable auto-polling because SRCI will disable - * auto-polling - */ - - enable_mii_autopoll(regs); - - if (vptr->mii_status & VELOCITY_LINK_FAIL) - netif_stop_queue(vptr->dev); - else - netif_wake_queue(vptr->dev); - - } - if (status & ISR_MIBFI) - velocity_update_hw_mibs(vptr); - if (status & ISR_LSTEI) - mac_rx_queue_wake(vptr->mac_regs); -} - -/** - * tx_srv - transmit interrupt service - * @vptr; Velocity - * - * Scan the queues looking for transmitted packets that - * we can complete and clean up. Update any statistics as - * necessary/ - */ -static int velocity_tx_srv(struct velocity_info *vptr) -{ - struct tx_desc *td; - int qnum; - int full = 0; - int idx; - int works = 0; - struct velocity_td_info *tdinfo; - struct net_device_stats *stats = &vptr->dev->stats; - - for (qnum = 0; qnum < vptr->tx.numq; qnum++) { - for (idx = vptr->tx.tail[qnum]; vptr->tx.used[qnum] > 0; - idx = (idx + 1) % vptr->options.numtx) { - - /* - * Get Tx Descriptor - */ - td = &(vptr->tx.rings[qnum][idx]); - tdinfo = &(vptr->tx.infos[qnum][idx]); - - if (td->tdesc0.len & OWNED_BY_NIC) - break; - - if ((works++ > 15)) - break; - - if (td->tdesc0.TSR & TSR0_TERR) { - stats->tx_errors++; - stats->tx_dropped++; - if (td->tdesc0.TSR & TSR0_CDH) - stats->tx_heartbeat_errors++; - if (td->tdesc0.TSR & TSR0_CRS) - stats->tx_carrier_errors++; - if (td->tdesc0.TSR & TSR0_ABT) - stats->tx_aborted_errors++; - if (td->tdesc0.TSR & TSR0_OWC) - stats->tx_window_errors++; - } else { - stats->tx_packets++; - stats->tx_bytes += tdinfo->skb->len; - } - velocity_free_tx_buf(vptr, tdinfo, td); - vptr->tx.used[qnum]--; - } - vptr->tx.tail[qnum] = idx; - - if (AVAIL_TD(vptr, qnum) < 1) - full = 1; - } - /* - * Look to see if we should kick the transmit network - * layer for more work. - */ - if (netif_queue_stopped(vptr->dev) && (full == 0) && - (!(vptr->mii_status & VELOCITY_LINK_FAIL))) { - netif_wake_queue(vptr->dev); - } - return works; -} - -/** - * velocity_rx_csum - checksum process - * @rd: receive packet descriptor - * @skb: network layer packet buffer - * - * Process the status bits for the received packet and determine - * if the checksum was computed and verified by the hardware - */ -static inline void velocity_rx_csum(struct rx_desc *rd, struct sk_buff *skb) -{ - skb_checksum_none_assert(skb); - - if (rd->rdesc1.CSM & CSM_IPKT) { - if (rd->rdesc1.CSM & CSM_IPOK) { - if ((rd->rdesc1.CSM & CSM_TCPKT) || - (rd->rdesc1.CSM & CSM_UDPKT)) { - if (!(rd->rdesc1.CSM & CSM_TUPOK)) - return; - } - skb->ip_summed = CHECKSUM_UNNECESSARY; - } - } -} - -/** - * velocity_rx_copy - in place Rx copy for small packets - * @rx_skb: network layer packet buffer candidate - * @pkt_size: received data size - * @rd: receive packet descriptor - * @dev: network device - * - * Replace the current skb that is scheduled for Rx processing by a - * shorter, immediately allocated skb, if the received packet is small - * enough. This function returns a negative value if the received - * packet is too big or if memory is exhausted. - */ -static int velocity_rx_copy(struct sk_buff **rx_skb, int pkt_size, - struct velocity_info *vptr) -{ - int ret = -1; - if (pkt_size < rx_copybreak) { - struct sk_buff *new_skb; - - new_skb = netdev_alloc_skb_ip_align(vptr->dev, pkt_size); - if (new_skb) { - new_skb->ip_summed = rx_skb[0]->ip_summed; - skb_copy_from_linear_data(*rx_skb, new_skb->data, pkt_size); - *rx_skb = new_skb; - ret = 0; - } - - } - return ret; -} - -/** - * velocity_iph_realign - IP header alignment - * @vptr: velocity we are handling - * @skb: network layer packet buffer - * @pkt_size: received data size - * - * Align IP header on a 2 bytes boundary. This behavior can be - * configured by the user. - */ -static inline void velocity_iph_realign(struct velocity_info *vptr, - struct sk_buff *skb, int pkt_size) -{ - if (vptr->flags & VELOCITY_FLAGS_IP_ALIGN) { - memmove(skb->data + 2, skb->data, pkt_size); - skb_reserve(skb, 2); - } -} - -/** - * velocity_receive_frame - received packet processor - * @vptr: velocity we are handling - * @idx: ring index - * - * A packet has arrived. We process the packet and if appropriate - * pass the frame up the network stack - */ -static int velocity_receive_frame(struct velocity_info *vptr, int idx) -{ - void (*pci_action)(struct pci_dev *, dma_addr_t, size_t, int); - struct net_device_stats *stats = &vptr->dev->stats; - struct velocity_rd_info *rd_info = &(vptr->rx.info[idx]); - struct rx_desc *rd = &(vptr->rx.ring[idx]); - int pkt_len = le16_to_cpu(rd->rdesc0.len) & 0x3fff; - struct sk_buff *skb; - - if (rd->rdesc0.RSR & (RSR_STP | RSR_EDP)) { - VELOCITY_PRT(MSG_LEVEL_VERBOSE, KERN_ERR " %s : the received frame span multple RDs.\n", vptr->dev->name); - stats->rx_length_errors++; - return -EINVAL; - } - - if (rd->rdesc0.RSR & RSR_MAR) - stats->multicast++; - - skb = rd_info->skb; - - pci_dma_sync_single_for_cpu(vptr->pdev, rd_info->skb_dma, - vptr->rx.buf_sz, PCI_DMA_FROMDEVICE); - - /* - * Drop frame not meeting IEEE 802.3 - */ - - if (vptr->flags & VELOCITY_FLAGS_VAL_PKT_LEN) { - if (rd->rdesc0.RSR & RSR_RL) { - stats->rx_length_errors++; - return -EINVAL; - } - } - - pci_action = pci_dma_sync_single_for_device; - - velocity_rx_csum(rd, skb); - - if (velocity_rx_copy(&skb, pkt_len, vptr) < 0) { - velocity_iph_realign(vptr, skb, pkt_len); - pci_action = pci_unmap_single; - rd_info->skb = NULL; - } - - pci_action(vptr->pdev, rd_info->skb_dma, vptr->rx.buf_sz, - PCI_DMA_FROMDEVICE); - - skb_put(skb, pkt_len - 4); - skb->protocol = eth_type_trans(skb, vptr->dev); - - if (rd->rdesc0.RSR & RSR_DETAG) { - u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG)); - - __vlan_hwaccel_put_tag(skb, vid); - } - netif_rx(skb); - - stats->rx_bytes += pkt_len; - stats->rx_packets++; - - return 0; -} - -/** - * velocity_rx_srv - service RX interrupt - * @vptr: velocity - * - * Walk the receive ring of the velocity adapter and remove - * any received packets from the receive queue. Hand the ring - * slots back to the adapter for reuse. - */ -static int velocity_rx_srv(struct velocity_info *vptr, int budget_left) -{ - struct net_device_stats *stats = &vptr->dev->stats; - int rd_curr = vptr->rx.curr; - int works = 0; - - while (works < budget_left) { - struct rx_desc *rd = vptr->rx.ring + rd_curr; - - if (!vptr->rx.info[rd_curr].skb) - break; - - if (rd->rdesc0.len & OWNED_BY_NIC) - break; - - rmb(); - - /* - * Don't drop CE or RL error frame although RXOK is off - */ - if (rd->rdesc0.RSR & (RSR_RXOK | RSR_CE | RSR_RL)) { - if (velocity_receive_frame(vptr, rd_curr) < 0) - stats->rx_dropped++; - } else { - if (rd->rdesc0.RSR & RSR_CRC) - stats->rx_crc_errors++; - if (rd->rdesc0.RSR & RSR_FAE) - stats->rx_frame_errors++; - - stats->rx_dropped++; - } - - rd->size |= RX_INTEN; - - rd_curr++; - if (rd_curr >= vptr->options.numrx) - rd_curr = 0; - works++; - } - - vptr->rx.curr = rd_curr; - - if ((works > 0) && (velocity_rx_refill(vptr) > 0)) - velocity_give_many_rx_descs(vptr); - - VAR_USED(stats); - return works; -} - -static int velocity_poll(struct napi_struct *napi, int budget) -{ - struct velocity_info *vptr = container_of(napi, - struct velocity_info, napi); - unsigned int rx_done; - unsigned long flags; - - spin_lock_irqsave(&vptr->lock, flags); - /* - * Do rx and tx twice for performance (taken from the VIA - * out-of-tree driver). - */ - rx_done = velocity_rx_srv(vptr, budget / 2); - velocity_tx_srv(vptr); - rx_done += velocity_rx_srv(vptr, budget - rx_done); - velocity_tx_srv(vptr); - - /* If budget not fully consumed, exit the polling mode */ - if (rx_done < budget) { - napi_complete(napi); - mac_enable_int(vptr->mac_regs); - } - spin_unlock_irqrestore(&vptr->lock, flags); - - return rx_done; -} - -/** - * velocity_intr - interrupt callback - * @irq: interrupt number - * @dev_instance: interrupting device - * - * Called whenever an interrupt is generated by the velocity - * adapter IRQ line. We may not be the source of the interrupt - * and need to identify initially if we are, and if not exit as - * efficiently as possible. - */ -static irqreturn_t velocity_intr(int irq, void *dev_instance) -{ - struct net_device *dev = dev_instance; - struct velocity_info *vptr = netdev_priv(dev); - u32 isr_status; - - spin_lock(&vptr->lock); - isr_status = mac_read_isr(vptr->mac_regs); - - /* Not us ? */ - if (isr_status == 0) { - spin_unlock(&vptr->lock); - return IRQ_NONE; - } - - /* Ack the interrupt */ - mac_write_isr(vptr->mac_regs, isr_status); - - if (likely(napi_schedule_prep(&vptr->napi))) { - mac_disable_int(vptr->mac_regs); - __napi_schedule(&vptr->napi); - } - - if (isr_status & (~(ISR_PRXI | ISR_PPRXI | ISR_PTXI | ISR_PPTXI))) - velocity_error(vptr, isr_status); - - spin_unlock(&vptr->lock); - - return IRQ_HANDLED; -} - -/** - * velocity_open - interface activation callback - * @dev: network layer device to open - * - * Called when the network layer brings the interface up. Returns - * a negative posix error code on failure, or zero on success. - * - * All the ring allocation and set up is done on open for this - * adapter to minimise memory usage when inactive - */ -static int velocity_open(struct net_device *dev) -{ - struct velocity_info *vptr = netdev_priv(dev); - int ret; - - ret = velocity_init_rings(vptr, dev->mtu); - if (ret < 0) - goto out; - - /* Ensure chip is running */ - pci_set_power_state(vptr->pdev, PCI_D0); - - velocity_init_registers(vptr, VELOCITY_INIT_COLD); - - ret = request_irq(vptr->pdev->irq, velocity_intr, IRQF_SHARED, - dev->name, dev); - if (ret < 0) { - /* Power down the chip */ - pci_set_power_state(vptr->pdev, PCI_D3hot); - velocity_free_rings(vptr); - goto out; - } - - velocity_give_many_rx_descs(vptr); - - mac_enable_int(vptr->mac_regs); - netif_start_queue(dev); - napi_enable(&vptr->napi); - vptr->flags |= VELOCITY_FLAGS_OPENED; -out: - return ret; -} - -/** - * velocity_shutdown - shut down the chip - * @vptr: velocity to deactivate - * - * Shuts down the internal operations of the velocity and - * disables interrupts, autopolling, transmit and receive - */ -static void velocity_shutdown(struct velocity_info *vptr) -{ - struct mac_regs __iomem *regs = vptr->mac_regs; - mac_disable_int(regs); - writel(CR0_STOP, ®s->CR0Set); - writew(0xFFFF, ®s->TDCSRClr); - writeb(0xFF, ®s->RDCSRClr); - safe_disable_mii_autopoll(regs); - mac_clear_isr(regs); -} - -/** - * velocity_change_mtu - MTU change callback - * @dev: network device - * @new_mtu: desired MTU - * - * Handle requests from the networking layer for MTU change on - * this interface. It gets called on a change by the network layer. - * Return zero for success or negative posix error code. - */ -static int velocity_change_mtu(struct net_device *dev, int new_mtu) -{ - struct velocity_info *vptr = netdev_priv(dev); - int ret = 0; - - if ((new_mtu < VELOCITY_MIN_MTU) || new_mtu > (VELOCITY_MAX_MTU)) { - VELOCITY_PRT(MSG_LEVEL_ERR, KERN_NOTICE "%s: Invalid MTU.\n", - vptr->dev->name); - ret = -EINVAL; - goto out_0; - } - - if (!netif_running(dev)) { - dev->mtu = new_mtu; - goto out_0; - } - - if (dev->mtu != new_mtu) { - struct velocity_info *tmp_vptr; - unsigned long flags; - struct rx_info rx; - struct tx_info tx; - - tmp_vptr = kzalloc(sizeof(*tmp_vptr), GFP_KERNEL); - if (!tmp_vptr) { - ret = -ENOMEM; - goto out_0; - } - - tmp_vptr->dev = dev; - tmp_vptr->pdev = vptr->pdev; - tmp_vptr->options = vptr->options; - tmp_vptr->tx.numq = vptr->tx.numq; - - ret = velocity_init_rings(tmp_vptr, new_mtu); - if (ret < 0) - goto out_free_tmp_vptr_1; - - spin_lock_irqsave(&vptr->lock, flags); - - netif_stop_queue(dev); - velocity_shutdown(vptr); - - rx = vptr->rx; - tx = vptr->tx; - - vptr->rx = tmp_vptr->rx; - vptr->tx = tmp_vptr->tx; - - tmp_vptr->rx = rx; - tmp_vptr->tx = tx; - - dev->mtu = new_mtu; - - velocity_init_registers(vptr, VELOCITY_INIT_COLD); - - velocity_give_many_rx_descs(vptr); - - mac_enable_int(vptr->mac_regs); - netif_start_queue(dev); - - spin_unlock_irqrestore(&vptr->lock, flags); - - velocity_free_rings(tmp_vptr); - -out_free_tmp_vptr_1: - kfree(tmp_vptr); - } -out_0: - return ret; -} - -/** - * velocity_mii_ioctl - MII ioctl handler - * @dev: network device - * @ifr: the ifreq block for the ioctl - * @cmd: the command - * - * Process MII requests made via ioctl from the network layer. These - * are used by tools like kudzu to interrogate the link state of the - * hardware - */ -static int velocity_mii_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) -{ - struct velocity_info *vptr = netdev_priv(dev); - struct mac_regs __iomem *regs = vptr->mac_regs; - unsigned long flags; - struct mii_ioctl_data *miidata = if_mii(ifr); - int err; - - switch (cmd) { - case SIOCGMIIPHY: - miidata->phy_id = readb(®s->MIIADR) & 0x1f; - break; - case SIOCGMIIREG: - if (velocity_mii_read(vptr->mac_regs, miidata->reg_num & 0x1f, &(miidata->val_out)) < 0) - return -ETIMEDOUT; - break; - case SIOCSMIIREG: - spin_lock_irqsave(&vptr->lock, flags); - err = velocity_mii_write(vptr->mac_regs, miidata->reg_num & 0x1f, miidata->val_in); - spin_unlock_irqrestore(&vptr->lock, flags); - check_connection_type(vptr->mac_regs); - if (err) - return err; - break; - default: - return -EOPNOTSUPP; - } - return 0; -} - -/** - * velocity_ioctl - ioctl entry point - * @dev: network device - * @rq: interface request ioctl - * @cmd: command code - * - * Called when the user issues an ioctl request to the network - * device in question. The velocity interface supports MII. - */ -static int velocity_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) -{ - struct velocity_info *vptr = netdev_priv(dev); - int ret; - - /* If we are asked for information and the device is power - saving then we need to bring the device back up to talk to it */ - - if (!netif_running(dev)) - pci_set_power_state(vptr->pdev, PCI_D0); - - switch (cmd) { - case SIOCGMIIPHY: /* Get address of MII PHY in use. */ - case SIOCGMIIREG: /* Read MII PHY register. */ - case SIOCSMIIREG: /* Write to MII PHY register. */ - ret = velocity_mii_ioctl(dev, rq, cmd); - break; - - default: - ret = -EOPNOTSUPP; - } - if (!netif_running(dev)) - pci_set_power_state(vptr->pdev, PCI_D3hot); - - - return ret; -} - -/** - * velocity_get_status - statistics callback - * @dev: network device - * - * Callback from the network layer to allow driver statistics - * to be resynchronized with hardware collected state. In the - * case of the velocity we need to pull the MIB counters from - * the hardware into the counters before letting the network - * layer display them. - */ -static struct net_device_stats *velocity_get_stats(struct net_device *dev) -{ - struct velocity_info *vptr = netdev_priv(dev); - - /* If the hardware is down, don't touch MII */ - if (!netif_running(dev)) - return &dev->stats; - - spin_lock_irq(&vptr->lock); - velocity_update_hw_mibs(vptr); - spin_unlock_irq(&vptr->lock); - - dev->stats.rx_packets = vptr->mib_counter[HW_MIB_ifRxAllPkts]; - dev->stats.rx_errors = vptr->mib_counter[HW_MIB_ifRxErrorPkts]; - dev->stats.rx_length_errors = vptr->mib_counter[HW_MIB_ifInRangeLengthErrors]; - -// unsigned long rx_dropped; /* no space in linux buffers */ - dev->stats.collisions = vptr->mib_counter[HW_MIB_ifTxEtherCollisions]; - /* detailed rx_errors: */ -// unsigned long rx_length_errors; -// unsigned long rx_over_errors; /* receiver ring buff overflow */ - dev->stats.rx_crc_errors = vptr->mib_counter[HW_MIB_ifRxPktCRCE]; -// unsigned long rx_frame_errors; /* recv'd frame alignment error */ -// unsigned long rx_fifo_errors; /* recv'r fifo overrun */ -// unsigned long rx_missed_errors; /* receiver missed packet */ - - /* detailed tx_errors */ -// unsigned long tx_fifo_errors; - - return &dev->stats; -} - -/** - * velocity_close - close adapter callback - * @dev: network device - * - * Callback from the network layer when the velocity is being - * deactivated by the network layer - */ -static int velocity_close(struct net_device *dev) -{ - struct velocity_info *vptr = netdev_priv(dev); - - napi_disable(&vptr->napi); - netif_stop_queue(dev); - velocity_shutdown(vptr); - - if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) - velocity_get_ip(vptr); - if (dev->irq != 0) - free_irq(dev->irq, dev); - - /* Power down the chip */ - pci_set_power_state(vptr->pdev, PCI_D3hot); - - velocity_free_rings(vptr); - - vptr->flags &= (~VELOCITY_FLAGS_OPENED); - return 0; -} - -/** - * velocity_xmit - transmit packet callback - * @skb: buffer to transmit - * @dev: network device - * - * Called by the networ layer to request a packet is queued to - * the velocity. Returns zero on success. - */ -static netdev_tx_t velocity_xmit(struct sk_buff *skb, - struct net_device *dev) -{ - struct velocity_info *vptr = netdev_priv(dev); - int qnum = 0; - struct tx_desc *td_ptr; - struct velocity_td_info *tdinfo; - unsigned long flags; - int pktlen; - int index, prev; - int i = 0; - - if (skb_padto(skb, ETH_ZLEN)) - goto out; - - /* The hardware can handle at most 7 memory segments, so merge - * the skb if there are more */ - if (skb_shinfo(skb)->nr_frags > 6 && __skb_linearize(skb)) { - kfree_skb(skb); - return NETDEV_TX_OK; - } - - pktlen = skb_shinfo(skb)->nr_frags == 0 ? - max_t(unsigned int, skb->len, ETH_ZLEN) : - skb_headlen(skb); - - spin_lock_irqsave(&vptr->lock, flags); - - index = vptr->tx.curr[qnum]; - td_ptr = &(vptr->tx.rings[qnum][index]); - tdinfo = &(vptr->tx.infos[qnum][index]); - - td_ptr->tdesc1.TCR = TCR0_TIC; - td_ptr->td_buf[0].size &= ~TD_QUEUE; - - /* - * Map the linear network buffer into PCI space and - * add it to the transmit ring. - */ - tdinfo->skb = skb; - tdinfo->skb_dma[0] = pci_map_single(vptr->pdev, skb->data, pktlen, PCI_DMA_TODEVICE); - td_ptr->tdesc0.len = cpu_to_le16(pktlen); - td_ptr->td_buf[0].pa_low = cpu_to_le32(tdinfo->skb_dma[0]); - td_ptr->td_buf[0].pa_high = 0; - td_ptr->td_buf[0].size = cpu_to_le16(pktlen); - - /* Handle fragments */ - for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { - skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; - - tdinfo->skb_dma[i + 1] = pci_map_page(vptr->pdev, frag->page, - frag->page_offset, frag->size, - PCI_DMA_TODEVICE); - - td_ptr->td_buf[i + 1].pa_low = cpu_to_le32(tdinfo->skb_dma[i + 1]); - td_ptr->td_buf[i + 1].pa_high = 0; - td_ptr->td_buf[i + 1].size = cpu_to_le16(frag->size); - } - tdinfo->nskb_dma = i + 1; - - td_ptr->tdesc1.cmd = TCPLS_NORMAL + (tdinfo->nskb_dma + 1) * 16; - - if (vlan_tx_tag_present(skb)) { - td_ptr->tdesc1.vlan = cpu_to_le16(vlan_tx_tag_get(skb)); - td_ptr->tdesc1.TCR |= TCR0_VETAG; - } - - /* - * Handle hardware checksum - */ - if (skb->ip_summed == CHECKSUM_PARTIAL) { - const struct iphdr *ip = ip_hdr(skb); - if (ip->protocol == IPPROTO_TCP) - td_ptr->tdesc1.TCR |= TCR0_TCPCK; - else if (ip->protocol == IPPROTO_UDP) - td_ptr->tdesc1.TCR |= (TCR0_UDPCK); - td_ptr->tdesc1.TCR |= TCR0_IPCK; - } - - prev = index - 1; - if (prev < 0) - prev = vptr->options.numtx - 1; - td_ptr->tdesc0.len |= OWNED_BY_NIC; - vptr->tx.used[qnum]++; - vptr->tx.curr[qnum] = (index + 1) % vptr->options.numtx; - - if (AVAIL_TD(vptr, qnum) < 1) - netif_stop_queue(dev); - - td_ptr = &(vptr->tx.rings[qnum][prev]); - td_ptr->td_buf[0].size |= TD_QUEUE; - mac_tx_queue_wake(vptr->mac_regs, qnum); - - spin_unlock_irqrestore(&vptr->lock, flags); -out: - return NETDEV_TX_OK; -} - -static const struct net_device_ops velocity_netdev_ops = { - .ndo_open = velocity_open, - .ndo_stop = velocity_close, - .ndo_start_xmit = velocity_xmit, - .ndo_get_stats = velocity_get_stats, - .ndo_validate_addr = eth_validate_addr, - .ndo_set_mac_address = eth_mac_addr, - .ndo_set_multicast_list = velocity_set_multi, - .ndo_change_mtu = velocity_change_mtu, - .ndo_do_ioctl = velocity_ioctl, - .ndo_vlan_rx_add_vid = velocity_vlan_rx_add_vid, - .ndo_vlan_rx_kill_vid = velocity_vlan_rx_kill_vid, -}; - -/** - * velocity_init_info - init private data - * @pdev: PCI device - * @vptr: Velocity info - * @info: Board type - * - * Set up the initial velocity_info struct for the device that has been - * discovered. - */ -static void __devinit velocity_init_info(struct pci_dev *pdev, - struct velocity_info *vptr, - const struct velocity_info_tbl *info) -{ - memset(vptr, 0, sizeof(struct velocity_info)); - - vptr->pdev = pdev; - vptr->chip_id = info->chip_id; - vptr->tx.numq = info->txqueue; - vptr->multicast_limit = MCAM_SIZE; - spin_lock_init(&vptr->lock); -} - -/** - * velocity_get_pci_info - retrieve PCI info for device - * @vptr: velocity device - * @pdev: PCI device it matches - * - * Retrieve the PCI configuration space data that interests us from - * the kernel PCI layer - */ -static int __devinit velocity_get_pci_info(struct velocity_info *vptr, struct pci_dev *pdev) -{ - vptr->rev_id = pdev->revision; - - pci_set_master(pdev); - - vptr->ioaddr = pci_resource_start(pdev, 0); - vptr->memaddr = pci_resource_start(pdev, 1); - - if (!(pci_resource_flags(pdev, 0) & IORESOURCE_IO)) { - dev_err(&pdev->dev, - "region #0 is not an I/O resource, aborting.\n"); - return -EINVAL; - } - - if ((pci_resource_flags(pdev, 1) & IORESOURCE_IO)) { - dev_err(&pdev->dev, - "region #1 is an I/O resource, aborting.\n"); - return -EINVAL; - } - - if (pci_resource_len(pdev, 1) < VELOCITY_IO_SIZE) { - dev_err(&pdev->dev, "region #1 is too small.\n"); - return -EINVAL; - } - vptr->pdev = pdev; - - return 0; -} - -/** - * velocity_print_info - per driver data - * @vptr: velocity - * - * Print per driver data as the kernel driver finds Velocity - * hardware - */ -static void __devinit velocity_print_info(struct velocity_info *vptr) -{ - struct net_device *dev = vptr->dev; - - printk(KERN_INFO "%s: %s\n", dev->name, get_chip_name(vptr->chip_id)); - printk(KERN_INFO "%s: Ethernet Address: %pM\n", - dev->name, dev->dev_addr); -} - -static u32 velocity_get_link(struct net_device *dev) -{ - struct velocity_info *vptr = netdev_priv(dev); - struct mac_regs __iomem *regs = vptr->mac_regs; - return BYTE_REG_BITS_IS_ON(PHYSR0_LINKGD, ®s->PHYSR0) ? 1 : 0; -} - -/** - * velocity_found1 - set up discovered velocity card - * @pdev: PCI device - * @ent: PCI device table entry that matched - * - * Configure a discovered adapter from scratch. Return a negative - * errno error code on failure paths. - */ -static int __devinit velocity_found1(struct pci_dev *pdev, const struct pci_device_id *ent) -{ - static int first = 1; - struct net_device *dev; - int i; - const char *drv_string; - const struct velocity_info_tbl *info = &chip_info_table[ent->driver_data]; - struct velocity_info *vptr; - struct mac_regs __iomem *regs; - int ret = -ENOMEM; - - /* FIXME: this driver, like almost all other ethernet drivers, - * can support more than MAX_UNITS. - */ - if (velocity_nics >= MAX_UNITS) { - dev_notice(&pdev->dev, "already found %d NICs.\n", - velocity_nics); - return -ENODEV; - } - - dev = alloc_etherdev(sizeof(struct velocity_info)); - if (!dev) { - dev_err(&pdev->dev, "allocate net device failed.\n"); - goto out; - } - - /* Chain it all together */ - - SET_NETDEV_DEV(dev, &pdev->dev); - vptr = netdev_priv(dev); - - - if (first) { - printk(KERN_INFO "%s Ver. %s\n", - VELOCITY_FULL_DRV_NAM, VELOCITY_VERSION); - printk(KERN_INFO "Copyright (c) 2002, 2003 VIA Networking Technologies, Inc.\n"); - printk(KERN_INFO "Copyright (c) 2004 Red Hat Inc.\n"); - first = 0; - } - - velocity_init_info(pdev, vptr, info); - - vptr->dev = dev; - - ret = pci_enable_device(pdev); - if (ret < 0) - goto err_free_dev; - - dev->irq = pdev->irq; - - ret = velocity_get_pci_info(vptr, pdev); - if (ret < 0) { - /* error message already printed */ - goto err_disable; - } - - ret = pci_request_regions(pdev, VELOCITY_NAME); - if (ret < 0) { - dev_err(&pdev->dev, "No PCI resources.\n"); - goto err_disable; - } - - regs = ioremap(vptr->memaddr, VELOCITY_IO_SIZE); - if (regs == NULL) { - ret = -EIO; - goto err_release_res; - } - - vptr->mac_regs = regs; - - mac_wol_reset(regs); - - dev->base_addr = vptr->ioaddr; - - for (i = 0; i < 6; i++) - dev->dev_addr[i] = readb(®s->PAR[i]); - - - drv_string = dev_driver_string(&pdev->dev); - - velocity_get_options(&vptr->options, velocity_nics, drv_string); - - /* - * Mask out the options cannot be set to the chip - */ - - vptr->options.flags &= info->flags; - - /* - * Enable the chip specified capbilities - */ - - vptr->flags = vptr->options.flags | (info->flags & 0xFF000000UL); - - vptr->wol_opts = vptr->options.wol_opts; - vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED; - - vptr->phy_id = MII_GET_PHY_ID(vptr->mac_regs); - - dev->irq = pdev->irq; - dev->netdev_ops = &velocity_netdev_ops; - dev->ethtool_ops = &velocity_ethtool_ops; - netif_napi_add(dev, &vptr->napi, velocity_poll, VELOCITY_NAPI_WEIGHT); - - dev->hw_features = NETIF_F_IP_CSUM | NETIF_F_SG | NETIF_F_HW_VLAN_TX; - dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_FILTER | - NETIF_F_HW_VLAN_RX | NETIF_F_IP_CSUM; - - ret = register_netdev(dev); - if (ret < 0) - goto err_iounmap; - - if (!velocity_get_link(dev)) { - netif_carrier_off(dev); - vptr->mii_status |= VELOCITY_LINK_FAIL; - } - - velocity_print_info(vptr); - pci_set_drvdata(pdev, dev); - - /* and leave the chip powered down */ - - pci_set_power_state(pdev, PCI_D3hot); - velocity_nics++; -out: - return ret; - -err_iounmap: - iounmap(regs); -err_release_res: - pci_release_regions(pdev); -err_disable: - pci_disable_device(pdev); -err_free_dev: - free_netdev(dev); - goto out; -} - -#ifdef CONFIG_PM -/** - * wol_calc_crc - WOL CRC - * @pattern: data pattern - * @mask_pattern: mask - * - * Compute the wake on lan crc hashes for the packet header - * we are interested in. - */ -static u16 wol_calc_crc(int size, u8 *pattern, u8 *mask_pattern) -{ - u16 crc = 0xFFFF; - u8 mask; - int i, j; - - for (i = 0; i < size; i++) { - mask = mask_pattern[i]; - - /* Skip this loop if the mask equals to zero */ - if (mask == 0x00) - continue; - - for (j = 0; j < 8; j++) { - if ((mask & 0x01) == 0) { - mask >>= 1; - continue; - } - mask >>= 1; - crc = crc_ccitt(crc, &(pattern[i * 8 + j]), 1); - } - } - /* Finally, invert the result once to get the correct data */ - crc = ~crc; - return bitrev32(crc) >> 16; -} - -/** - * velocity_set_wol - set up for wake on lan - * @vptr: velocity to set WOL status on - * - * Set a card up for wake on lan either by unicast or by - * ARP packet. - * - * FIXME: check static buffer is safe here - */ -static int velocity_set_wol(struct velocity_info *vptr) -{ - struct mac_regs __iomem *regs = vptr->mac_regs; - enum speed_opt spd_dpx = vptr->options.spd_dpx; - static u8 buf[256]; - int i; - - static u32 mask_pattern[2][4] = { - {0x00203000, 0x000003C0, 0x00000000, 0x0000000}, /* ARP */ - {0xfffff000, 0xffffffff, 0xffffffff, 0x000ffff} /* Magic Packet */ - }; - - writew(0xFFFF, ®s->WOLCRClr); - writeb(WOLCFG_SAB | WOLCFG_SAM, ®s->WOLCFGSet); - writew(WOLCR_MAGIC_EN, ®s->WOLCRSet); - - /* - if (vptr->wol_opts & VELOCITY_WOL_PHY) - writew((WOLCR_LINKON_EN|WOLCR_LINKOFF_EN), ®s->WOLCRSet); - */ - - if (vptr->wol_opts & VELOCITY_WOL_UCAST) - writew(WOLCR_UNICAST_EN, ®s->WOLCRSet); - - if (vptr->wol_opts & VELOCITY_WOL_ARP) { - struct arp_packet *arp = (struct arp_packet *) buf; - u16 crc; - memset(buf, 0, sizeof(struct arp_packet) + 7); - - for (i = 0; i < 4; i++) - writel(mask_pattern[0][i], ®s->ByteMask[0][i]); - - arp->type = htons(ETH_P_ARP); - arp->ar_op = htons(1); - - memcpy(arp->ar_tip, vptr->ip_addr, 4); - - crc = wol_calc_crc((sizeof(struct arp_packet) + 7) / 8, buf, - (u8 *) & mask_pattern[0][0]); - - writew(crc, ®s->PatternCRC[0]); - writew(WOLCR_ARP_EN, ®s->WOLCRSet); - } - - BYTE_REG_BITS_ON(PWCFG_WOLTYPE, ®s->PWCFGSet); - BYTE_REG_BITS_ON(PWCFG_LEGACY_WOLEN, ®s->PWCFGSet); - - writew(0x0FFF, ®s->WOLSRClr); - - if (spd_dpx == SPD_DPX_1000_FULL) - goto mac_done; - - if (spd_dpx != SPD_DPX_AUTO) - goto advertise_done; - - if (vptr->mii_status & VELOCITY_AUTONEG_ENABLE) { - if (PHYID_GET_PHY_ID(vptr->phy_id) == PHYID_CICADA_CS8201) - MII_REG_BITS_ON(AUXCR_MDPPS, MII_NCONFIG, vptr->mac_regs); - - MII_REG_BITS_OFF(ADVERTISE_1000FULL | ADVERTISE_1000HALF, MII_CTRL1000, vptr->mac_regs); - } - - if (vptr->mii_status & VELOCITY_SPEED_1000) - MII_REG_BITS_ON(BMCR_ANRESTART, MII_BMCR, vptr->mac_regs); - -advertise_done: - BYTE_REG_BITS_ON(CHIPGCR_FCMODE, ®s->CHIPGCR); - - { - u8 GCR; - GCR = readb(®s->CHIPGCR); - GCR = (GCR & ~CHIPGCR_FCGMII) | CHIPGCR_FCFDX; - writeb(GCR, ®s->CHIPGCR); - } - -mac_done: - BYTE_REG_BITS_OFF(ISR_PWEI, ®s->ISR); - /* Turn on SWPTAG just before entering power mode */ - BYTE_REG_BITS_ON(STICKHW_SWPTAG, ®s->STICKHW); - /* Go to bed ..... */ - BYTE_REG_BITS_ON((STICKHW_DS1 | STICKHW_DS0), ®s->STICKHW); - - return 0; -} - -/** - * velocity_save_context - save registers - * @vptr: velocity - * @context: buffer for stored context - * - * Retrieve the current configuration from the velocity hardware - * and stash it in the context structure, for use by the context - * restore functions. This allows us to save things we need across - * power down states - */ -static void velocity_save_context(struct velocity_info *vptr, struct velocity_context *context) -{ - struct mac_regs __iomem *regs = vptr->mac_regs; - u16 i; - u8 __iomem *ptr = (u8 __iomem *)regs; - - for (i = MAC_REG_PAR; i < MAC_REG_CR0_CLR; i += 4) - *((u32 *) (context->mac_reg + i)) = readl(ptr + i); - - for (i = MAC_REG_MAR; i < MAC_REG_TDCSR_CLR; i += 4) - *((u32 *) (context->mac_reg + i)) = readl(ptr + i); - - for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) - *((u32 *) (context->mac_reg + i)) = readl(ptr + i); - -} - -static int velocity_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct velocity_info *vptr = netdev_priv(dev); - unsigned long flags; - - if (!netif_running(vptr->dev)) - return 0; - - netif_device_detach(vptr->dev); - - spin_lock_irqsave(&vptr->lock, flags); - pci_save_state(pdev); - - if (vptr->flags & VELOCITY_FLAGS_WOL_ENABLED) { - velocity_get_ip(vptr); - velocity_save_context(vptr, &vptr->context); - velocity_shutdown(vptr); - velocity_set_wol(vptr); - pci_enable_wake(pdev, PCI_D3hot, 1); - pci_set_power_state(pdev, PCI_D3hot); - } else { - velocity_save_context(vptr, &vptr->context); - velocity_shutdown(vptr); - pci_disable_device(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - } - - spin_unlock_irqrestore(&vptr->lock, flags); - return 0; -} - -/** - * velocity_restore_context - restore registers - * @vptr: velocity - * @context: buffer for stored context - * - * Reload the register configuration from the velocity context - * created by velocity_save_context. - */ -static void velocity_restore_context(struct velocity_info *vptr, struct velocity_context *context) -{ - struct mac_regs __iomem *regs = vptr->mac_regs; - int i; - u8 __iomem *ptr = (u8 __iomem *)regs; - - for (i = MAC_REG_PAR; i < MAC_REG_CR0_SET; i += 4) - writel(*((u32 *) (context->mac_reg + i)), ptr + i); - - /* Just skip cr0 */ - for (i = MAC_REG_CR1_SET; i < MAC_REG_CR0_CLR; i++) { - /* Clear */ - writeb(~(*((u8 *) (context->mac_reg + i))), ptr + i + 4); - /* Set */ - writeb(*((u8 *) (context->mac_reg + i)), ptr + i); - } - - for (i = MAC_REG_MAR; i < MAC_REG_IMR; i += 4) - writel(*((u32 *) (context->mac_reg + i)), ptr + i); - - for (i = MAC_REG_RDBASE_LO; i < MAC_REG_FIFO_TEST0; i += 4) - writel(*((u32 *) (context->mac_reg + i)), ptr + i); - - for (i = MAC_REG_TDCSR_SET; i <= MAC_REG_RDCSR_SET; i++) - writeb(*((u8 *) (context->mac_reg + i)), ptr + i); -} - -static int velocity_resume(struct pci_dev *pdev) -{ - struct net_device *dev = pci_get_drvdata(pdev); - struct velocity_info *vptr = netdev_priv(dev); - unsigned long flags; - int i; - - if (!netif_running(vptr->dev)) - return 0; - - pci_set_power_state(pdev, PCI_D0); - pci_enable_wake(pdev, 0, 0); - pci_restore_state(pdev); - - mac_wol_reset(vptr->mac_regs); - - spin_lock_irqsave(&vptr->lock, flags); - velocity_restore_context(vptr, &vptr->context); - velocity_init_registers(vptr, VELOCITY_INIT_WOL); - mac_disable_int(vptr->mac_regs); - - velocity_tx_srv(vptr); - - for (i = 0; i < vptr->tx.numq; i++) { - if (vptr->tx.used[i]) - mac_tx_queue_wake(vptr->mac_regs, i); - } - - mac_enable_int(vptr->mac_regs); - spin_unlock_irqrestore(&vptr->lock, flags); - netif_device_attach(vptr->dev); - - return 0; -} -#endif - -/* - * Definition for our device driver. The PCI layer interface - * uses this to handle all our card discover and plugging - */ -static struct pci_driver velocity_driver = { - .name = VELOCITY_NAME, - .id_table = velocity_id_table, - .probe = velocity_found1, - .remove = __devexit_p(velocity_remove1), -#ifdef CONFIG_PM - .suspend = velocity_suspend, - .resume = velocity_resume, -#endif -}; - - -/** - * velocity_ethtool_up - pre hook for ethtool - * @dev: network device - * - * Called before an ethtool operation. We need to make sure the - * chip is out of D3 state before we poke at it. - */ -static int velocity_ethtool_up(struct net_device *dev) -{ - struct velocity_info *vptr = netdev_priv(dev); - if (!netif_running(dev)) - pci_set_power_state(vptr->pdev, PCI_D0); - return 0; -} - -/** - * velocity_ethtool_down - post hook for ethtool - * @dev: network device - * - * Called after an ethtool operation. Restore the chip back to D3 - * state if it isn't running. - */ -static void velocity_ethtool_down(struct net_device *dev) -{ - struct velocity_info *vptr = netdev_priv(dev); - if (!netif_running(dev)) - pci_set_power_state(vptr->pdev, PCI_D3hot); -} - -static int velocity_get_settings(struct net_device *dev, - struct ethtool_cmd *cmd) -{ - struct velocity_info *vptr = netdev_priv(dev); - struct mac_regs __iomem *regs = vptr->mac_regs; - u32 status; - status = check_connection_type(vptr->mac_regs); - - cmd->supported = SUPPORTED_TP | - SUPPORTED_Autoneg | - SUPPORTED_10baseT_Half | - SUPPORTED_10baseT_Full | - SUPPORTED_100baseT_Half | - SUPPORTED_100baseT_Full | - SUPPORTED_1000baseT_Half | - SUPPORTED_1000baseT_Full; - - cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg; - if (vptr->options.spd_dpx == SPD_DPX_AUTO) { - cmd->advertising |= - ADVERTISED_10baseT_Half | - ADVERTISED_10baseT_Full | - ADVERTISED_100baseT_Half | - ADVERTISED_100baseT_Full | - ADVERTISED_1000baseT_Half | - ADVERTISED_1000baseT_Full; - } else { - switch (vptr->options.spd_dpx) { - case SPD_DPX_1000_FULL: - cmd->advertising |= ADVERTISED_1000baseT_Full; - break; - case SPD_DPX_100_HALF: - cmd->advertising |= ADVERTISED_100baseT_Half; - break; - case SPD_DPX_100_FULL: - cmd->advertising |= ADVERTISED_100baseT_Full; - break; - case SPD_DPX_10_HALF: - cmd->advertising |= ADVERTISED_10baseT_Half; - break; - case SPD_DPX_10_FULL: - cmd->advertising |= ADVERTISED_10baseT_Full; - break; - default: - break; - } - } - - if (status & VELOCITY_SPEED_1000) - ethtool_cmd_speed_set(cmd, SPEED_1000); - else if (status & VELOCITY_SPEED_100) - ethtool_cmd_speed_set(cmd, SPEED_100); - else - ethtool_cmd_speed_set(cmd, SPEED_10); - - cmd->autoneg = (status & VELOCITY_AUTONEG_ENABLE) ? AUTONEG_ENABLE : AUTONEG_DISABLE; - cmd->port = PORT_TP; - cmd->transceiver = XCVR_INTERNAL; - cmd->phy_address = readb(®s->MIIADR) & 0x1F; - - if (status & VELOCITY_DUPLEX_FULL) - cmd->duplex = DUPLEX_FULL; - else - cmd->duplex = DUPLEX_HALF; - - return 0; -} - -static int velocity_set_settings(struct net_device *dev, - struct ethtool_cmd *cmd) -{ - struct velocity_info *vptr = netdev_priv(dev); - u32 speed = ethtool_cmd_speed(cmd); - u32 curr_status; - u32 new_status = 0; - int ret = 0; - - curr_status = check_connection_type(vptr->mac_regs); - curr_status &= (~VELOCITY_LINK_FAIL); - - new_status |= ((cmd->autoneg) ? VELOCITY_AUTONEG_ENABLE : 0); - new_status |= ((speed == SPEED_1000) ? VELOCITY_SPEED_1000 : 0); - new_status |= ((speed == SPEED_100) ? VELOCITY_SPEED_100 : 0); - new_status |= ((speed == SPEED_10) ? VELOCITY_SPEED_10 : 0); - new_status |= ((cmd->duplex == DUPLEX_FULL) ? VELOCITY_DUPLEX_FULL : 0); - - if ((new_status & VELOCITY_AUTONEG_ENABLE) && - (new_status != (curr_status | VELOCITY_AUTONEG_ENABLE))) { - ret = -EINVAL; - } else { - enum speed_opt spd_dpx; - - if (new_status & VELOCITY_AUTONEG_ENABLE) - spd_dpx = SPD_DPX_AUTO; - else if ((new_status & VELOCITY_SPEED_1000) && - (new_status & VELOCITY_DUPLEX_FULL)) { - spd_dpx = SPD_DPX_1000_FULL; - } else if (new_status & VELOCITY_SPEED_100) - spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ? - SPD_DPX_100_FULL : SPD_DPX_100_HALF; - else if (new_status & VELOCITY_SPEED_10) - spd_dpx = (new_status & VELOCITY_DUPLEX_FULL) ? - SPD_DPX_10_FULL : SPD_DPX_10_HALF; - else - return -EOPNOTSUPP; - - vptr->options.spd_dpx = spd_dpx; - - velocity_set_media_mode(vptr, new_status); - } - - return ret; -} - -static void velocity_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) -{ - struct velocity_info *vptr = netdev_priv(dev); - strcpy(info->driver, VELOCITY_NAME); - strcpy(info->version, VELOCITY_VERSION); - strcpy(info->bus_info, pci_name(vptr->pdev)); -} - -static void velocity_ethtool_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) -{ - struct velocity_info *vptr = netdev_priv(dev); - wol->supported = WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP; - wol->wolopts |= WAKE_MAGIC; - /* - if (vptr->wol_opts & VELOCITY_WOL_PHY) - wol.wolopts|=WAKE_PHY; - */ - if (vptr->wol_opts & VELOCITY_WOL_UCAST) - wol->wolopts |= WAKE_UCAST; - if (vptr->wol_opts & VELOCITY_WOL_ARP) - wol->wolopts |= WAKE_ARP; - memcpy(&wol->sopass, vptr->wol_passwd, 6); -} - -static int velocity_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) -{ - struct velocity_info *vptr = netdev_priv(dev); - - if (!(wol->wolopts & (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_ARP))) - return -EFAULT; - vptr->wol_opts = VELOCITY_WOL_MAGIC; - - /* - if (wol.wolopts & WAKE_PHY) { - vptr->wol_opts|=VELOCITY_WOL_PHY; - vptr->flags |=VELOCITY_FLAGS_WOL_ENABLED; - } - */ - - if (wol->wolopts & WAKE_MAGIC) { - vptr->wol_opts |= VELOCITY_WOL_MAGIC; - vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED; - } - if (wol->wolopts & WAKE_UCAST) { - vptr->wol_opts |= VELOCITY_WOL_UCAST; - vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED; - } - if (wol->wolopts & WAKE_ARP) { - vptr->wol_opts |= VELOCITY_WOL_ARP; - vptr->flags |= VELOCITY_FLAGS_WOL_ENABLED; - } - memcpy(vptr->wol_passwd, wol->sopass, 6); - return 0; -} - -static u32 velocity_get_msglevel(struct net_device *dev) -{ - return msglevel; -} - -static void velocity_set_msglevel(struct net_device *dev, u32 value) -{ - msglevel = value; -} - -static int get_pending_timer_val(int val) -{ - int mult_bits = val >> 6; - int mult = 1; - - switch (mult_bits) - { - case 1: - mult = 4; break; - case 2: - mult = 16; break; - case 3: - mult = 64; break; - case 0: - default: - break; - } - - return (val & 0x3f) * mult; -} - -static void set_pending_timer_val(int *val, u32 us) -{ - u8 mult = 0; - u8 shift = 0; - - if (us >= 0x3f) { - mult = 1; /* mult with 4 */ - shift = 2; - } - if (us >= 0x3f * 4) { - mult = 2; /* mult with 16 */ - shift = 4; - } - if (us >= 0x3f * 16) { - mult = 3; /* mult with 64 */ - shift = 6; - } - - *val = (mult << 6) | ((us >> shift) & 0x3f); -} - - -static int velocity_get_coalesce(struct net_device *dev, - struct ethtool_coalesce *ecmd) -{ - struct velocity_info *vptr = netdev_priv(dev); - - ecmd->tx_max_coalesced_frames = vptr->options.tx_intsup; - ecmd->rx_max_coalesced_frames = vptr->options.rx_intsup; - - ecmd->rx_coalesce_usecs = get_pending_timer_val(vptr->options.rxqueue_timer); - ecmd->tx_coalesce_usecs = get_pending_timer_val(vptr->options.txqueue_timer); - - return 0; -} - -static int velocity_set_coalesce(struct net_device *dev, - struct ethtool_coalesce *ecmd) -{ - struct velocity_info *vptr = netdev_priv(dev); - int max_us = 0x3f * 64; - unsigned long flags; - - /* 6 bits of */ - if (ecmd->tx_coalesce_usecs > max_us) - return -EINVAL; - if (ecmd->rx_coalesce_usecs > max_us) - return -EINVAL; - - if (ecmd->tx_max_coalesced_frames > 0xff) - return -EINVAL; - if (ecmd->rx_max_coalesced_frames > 0xff) - return -EINVAL; - - vptr->options.rx_intsup = ecmd->rx_max_coalesced_frames; - vptr->options.tx_intsup = ecmd->tx_max_coalesced_frames; - - set_pending_timer_val(&vptr->options.rxqueue_timer, - ecmd->rx_coalesce_usecs); - set_pending_timer_val(&vptr->options.txqueue_timer, - ecmd->tx_coalesce_usecs); - - /* Setup the interrupt suppression and queue timers */ - spin_lock_irqsave(&vptr->lock, flags); - mac_disable_int(vptr->mac_regs); - setup_adaptive_interrupts(vptr); - setup_queue_timers(vptr); - - mac_write_int_mask(vptr->int_mask, vptr->mac_regs); - mac_clear_isr(vptr->mac_regs); - mac_enable_int(vptr->mac_regs); - spin_unlock_irqrestore(&vptr->lock, flags); - - return 0; -} - -static const char velocity_gstrings[][ETH_GSTRING_LEN] = { - "rx_all", - "rx_ok", - "tx_ok", - "rx_error", - "rx_runt_ok", - "rx_runt_err", - "rx_64", - "tx_64", - "rx_65_to_127", - "tx_65_to_127", - "rx_128_to_255", - "tx_128_to_255", - "rx_256_to_511", - "tx_256_to_511", - "rx_512_to_1023", - "tx_512_to_1023", - "rx_1024_to_1518", - "tx_1024_to_1518", - "tx_ether_collisions", - "rx_crc_errors", - "rx_jumbo", - "tx_jumbo", - "rx_mac_control_frames", - "tx_mac_control_frames", - "rx_frame_alignement_errors", - "rx_long_ok", - "rx_long_err", - "tx_sqe_errors", - "rx_no_buf", - "rx_symbol_errors", - "in_range_length_errors", - "late_collisions" -}; - -static void velocity_get_strings(struct net_device *dev, u32 sset, u8 *data) -{ - switch (sset) { - case ETH_SS_STATS: - memcpy(data, *velocity_gstrings, sizeof(velocity_gstrings)); - break; - } -} - -static int velocity_get_sset_count(struct net_device *dev, int sset) -{ - switch (sset) { - case ETH_SS_STATS: - return ARRAY_SIZE(velocity_gstrings); - default: - return -EOPNOTSUPP; - } -} - -static void velocity_get_ethtool_stats(struct net_device *dev, - struct ethtool_stats *stats, u64 *data) -{ - if (netif_running(dev)) { - struct velocity_info *vptr = netdev_priv(dev); - u32 *p = vptr->mib_counter; - int i; - - spin_lock_irq(&vptr->lock); - velocity_update_hw_mibs(vptr); - spin_unlock_irq(&vptr->lock); - - for (i = 0; i < ARRAY_SIZE(velocity_gstrings); i++) - *data++ = *p++; - } -} - -static const struct ethtool_ops velocity_ethtool_ops = { - .get_settings = velocity_get_settings, - .set_settings = velocity_set_settings, - .get_drvinfo = velocity_get_drvinfo, - .get_wol = velocity_ethtool_get_wol, - .set_wol = velocity_ethtool_set_wol, - .get_msglevel = velocity_get_msglevel, - .set_msglevel = velocity_set_msglevel, - .get_link = velocity_get_link, - .get_strings = velocity_get_strings, - .get_sset_count = velocity_get_sset_count, - .get_ethtool_stats = velocity_get_ethtool_stats, - .get_coalesce = velocity_get_coalesce, - .set_coalesce = velocity_set_coalesce, - .begin = velocity_ethtool_up, - .complete = velocity_ethtool_down -}; - -#if defined(CONFIG_PM) && defined(CONFIG_INET) -static int velocity_netdev_event(struct notifier_block *nb, unsigned long notification, void *ptr) -{ - struct in_ifaddr *ifa = ptr; - struct net_device *dev = ifa->ifa_dev->dev; - - if (dev_net(dev) == &init_net && - dev->netdev_ops == &velocity_netdev_ops) - velocity_get_ip(netdev_priv(dev)); - - return NOTIFY_DONE; -} - -static struct notifier_block velocity_inetaddr_notifier = { - .notifier_call = velocity_netdev_event, -}; - -static void velocity_register_notifier(void) -{ - register_inetaddr_notifier(&velocity_inetaddr_notifier); -} - -static void velocity_unregister_notifier(void) -{ - unregister_inetaddr_notifier(&velocity_inetaddr_notifier); -} - -#else - -#define velocity_register_notifier() do {} while (0) -#define velocity_unregister_notifier() do {} while (0) - -#endif /* defined(CONFIG_PM) && defined(CONFIG_INET) */ - -/** - * velocity_init_module - load time function - * - * Called when the velocity module is loaded. The PCI driver - * is registered with the PCI layer, and in turn will call - * the probe functions for each velocity adapter installed - * in the system. - */ -static int __init velocity_init_module(void) -{ - int ret; - - velocity_register_notifier(); - ret = pci_register_driver(&velocity_driver); - if (ret < 0) - velocity_unregister_notifier(); - return ret; -} - -/** - * velocity_cleanup - module unload - * - * When the velocity hardware is unloaded this function is called. - * It will clean up the notifiers and the unregister the PCI - * driver interface for this hardware. This in turn cleans up - * all discovered interfaces before returning from the function - */ -static void __exit velocity_cleanup_module(void) -{ - velocity_unregister_notifier(); - pci_unregister_driver(&velocity_driver); -} - -module_init(velocity_init_module); -module_exit(velocity_cleanup_module); |