mirror of https://gitee.com/openkylin/linux.git
3293 lines
86 KiB
C
3293 lines
86 KiB
C
/*******************************************************************************
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*
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* Linux ThunderLAN Driver
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*
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* tlan.c
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* by James Banks
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*
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* (C) 1997-1998 Caldera, Inc.
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* (C) 1998 James Banks
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* (C) 1999-2001 Torben Mathiasen
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* (C) 2002 Samuel Chessman
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*
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** Useful (if not required) reading:
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*
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* Texas Instruments, ThunderLAN Programmer's Guide,
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* TI Literature Number SPWU013A
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* available in PDF format from www.ti.com
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* Level One, LXT901 and LXT970 Data Sheets
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* available in PDF format from www.level1.com
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* National Semiconductor, DP83840A Data Sheet
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* available in PDF format from www.national.com
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* Microchip Technology, 24C01A/02A/04A Data Sheet
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* available in PDF format from www.microchip.com
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*
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******************************************************************************/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/hardirq.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/eisa.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/delay.h>
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#include <linux/spinlock.h>
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#include <linux/workqueue.h>
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#include <linux/mii.h>
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#include "tlan.h"
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/* For removing EISA devices */
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static struct net_device *tlan_eisa_devices;
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static int tlan_devices_installed;
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/* Set speed, duplex and aui settings */
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static int aui[MAX_TLAN_BOARDS];
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static int duplex[MAX_TLAN_BOARDS];
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static int speed[MAX_TLAN_BOARDS];
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static int boards_found;
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module_param_array(aui, int, NULL, 0);
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module_param_array(duplex, int, NULL, 0);
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module_param_array(speed, int, NULL, 0);
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MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
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MODULE_PARM_DESC(duplex,
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"ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
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MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
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MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
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MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
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MODULE_LICENSE("GPL");
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/* Turn on debugging. See Documentation/networking/tlan.txt for details */
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static int debug;
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module_param(debug, int, 0);
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MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
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static const char tlan_signature[] = "TLAN";
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static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
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static int tlan_have_pci;
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static int tlan_have_eisa;
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static const char * const media[] = {
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"10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
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"100BaseTx-FD", "100BaseT4", NULL
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};
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static struct board {
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const char *device_label;
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u32 flags;
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u16 addr_ofs;
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} board_info[] = {
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{ "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
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{ "Compaq Netelligent 10/100 TX PCI UTP",
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TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
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{ "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
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{ "Compaq NetFlex-3/P",
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TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
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{ "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
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{ "Compaq Netelligent Integrated 10/100 TX UTP",
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TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
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{ "Compaq Netelligent Dual 10/100 TX PCI UTP",
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TLAN_ADAPTER_NONE, 0x83 },
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{ "Compaq Netelligent 10/100 TX Embedded UTP",
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TLAN_ADAPTER_NONE, 0x83 },
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{ "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
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{ "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
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TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
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{ "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
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TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
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{ "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
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{ "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
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{ "Compaq NetFlex-3/E",
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TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
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TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
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{ "Compaq NetFlex-3/E",
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TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
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};
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static const struct pci_device_id tlan_pci_tbl[] = {
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
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{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
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{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
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{ PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
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{ PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
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PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
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{ 0,}
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};
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MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
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static void tlan_eisa_probe(void);
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static void tlan_eisa_cleanup(void);
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static int tlan_init(struct net_device *);
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static int tlan_open(struct net_device *dev);
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static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
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static irqreturn_t tlan_handle_interrupt(int, void *);
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static int tlan_close(struct net_device *);
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static struct net_device_stats *tlan_get_stats(struct net_device *);
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static void tlan_set_multicast_list(struct net_device *);
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static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
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static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
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int irq, int rev, const struct pci_device_id *ent);
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static void tlan_tx_timeout(struct net_device *dev);
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static void tlan_tx_timeout_work(struct work_struct *work);
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static int tlan_init_one(struct pci_dev *pdev,
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const struct pci_device_id *ent);
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static u32 tlan_handle_tx_eof(struct net_device *, u16);
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static u32 tlan_handle_stat_overflow(struct net_device *, u16);
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static u32 tlan_handle_rx_eof(struct net_device *, u16);
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static u32 tlan_handle_dummy(struct net_device *, u16);
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static u32 tlan_handle_tx_eoc(struct net_device *, u16);
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static u32 tlan_handle_status_check(struct net_device *, u16);
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static u32 tlan_handle_rx_eoc(struct net_device *, u16);
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static void tlan_timer(unsigned long);
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static void tlan_reset_lists(struct net_device *);
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static void tlan_free_lists(struct net_device *);
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static void tlan_print_dio(u16);
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static void tlan_print_list(struct tlan_list *, char *, int);
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static void tlan_read_and_clear_stats(struct net_device *, int);
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static void tlan_reset_adapter(struct net_device *);
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static void tlan_finish_reset(struct net_device *);
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static void tlan_set_mac(struct net_device *, int areg, char *mac);
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static void tlan_phy_print(struct net_device *);
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static void tlan_phy_detect(struct net_device *);
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static void tlan_phy_power_down(struct net_device *);
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static void tlan_phy_power_up(struct net_device *);
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static void tlan_phy_reset(struct net_device *);
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static void tlan_phy_start_link(struct net_device *);
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static void tlan_phy_finish_auto_neg(struct net_device *);
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static void tlan_phy_monitor(unsigned long);
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/*
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static int tlan_phy_nop(struct net_device *);
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static int tlan_phy_internal_check(struct net_device *);
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static int tlan_phy_internal_service(struct net_device *);
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static int tlan_phy_dp83840a_check(struct net_device *);
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*/
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static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
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static void tlan_mii_send_data(u16, u32, unsigned);
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static void tlan_mii_sync(u16);
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static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
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static void tlan_ee_send_start(u16);
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static int tlan_ee_send_byte(u16, u8, int);
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static void tlan_ee_receive_byte(u16, u8 *, int);
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static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
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static inline void
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tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
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{
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unsigned long addr = (unsigned long)skb;
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tag->buffer[9].address = addr;
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tag->buffer[8].address = upper_32_bits(addr);
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}
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static inline struct sk_buff *
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tlan_get_skb(const struct tlan_list *tag)
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{
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unsigned long addr;
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addr = tag->buffer[9].address;
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addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
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return (struct sk_buff *) addr;
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}
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static u32
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(*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
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NULL,
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tlan_handle_tx_eof,
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tlan_handle_stat_overflow,
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tlan_handle_rx_eof,
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tlan_handle_dummy,
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tlan_handle_tx_eoc,
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tlan_handle_status_check,
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tlan_handle_rx_eoc
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};
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static inline void
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tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
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{
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struct tlan_priv *priv = netdev_priv(dev);
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unsigned long flags = 0;
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if (!in_irq())
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spin_lock_irqsave(&priv->lock, flags);
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if (priv->timer.function != NULL &&
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priv->timer_type != TLAN_TIMER_ACTIVITY) {
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if (!in_irq())
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spin_unlock_irqrestore(&priv->lock, flags);
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return;
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}
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priv->timer.function = tlan_timer;
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if (!in_irq())
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spin_unlock_irqrestore(&priv->lock, flags);
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priv->timer.data = (unsigned long) dev;
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priv->timer_set_at = jiffies;
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priv->timer_type = type;
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mod_timer(&priv->timer, jiffies + ticks);
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}
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/*****************************************************************************
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******************************************************************************
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ThunderLAN driver primary functions
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these functions are more or less common to all linux network drivers.
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******************************************************************************
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*****************************************************************************/
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/***************************************************************
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* tlan_remove_one
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*
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* Returns:
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* Nothing
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* Parms:
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* None
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*
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* Goes through the TLanDevices list and frees the device
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* structs and memory associated with each device (lists
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* and buffers). It also ureserves the IO port regions
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* associated with this device.
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*
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**************************************************************/
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static void tlan_remove_one(struct pci_dev *pdev)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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struct tlan_priv *priv = netdev_priv(dev);
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unregister_netdev(dev);
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if (priv->dma_storage) {
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pci_free_consistent(priv->pci_dev,
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priv->dma_size, priv->dma_storage,
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priv->dma_storage_dma);
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}
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#ifdef CONFIG_PCI
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pci_release_regions(pdev);
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#endif
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free_netdev(dev);
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cancel_work_sync(&priv->tlan_tqueue);
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}
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static void tlan_start(struct net_device *dev)
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{
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tlan_reset_lists(dev);
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/* NOTE: It might not be necessary to read the stats before a
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reset if you don't care what the values are.
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*/
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tlan_read_and_clear_stats(dev, TLAN_IGNORE);
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tlan_reset_adapter(dev);
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netif_wake_queue(dev);
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}
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static void tlan_stop(struct net_device *dev)
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{
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struct tlan_priv *priv = netdev_priv(dev);
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del_timer_sync(&priv->media_timer);
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tlan_read_and_clear_stats(dev, TLAN_RECORD);
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outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
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/* Reset and power down phy */
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tlan_reset_adapter(dev);
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if (priv->timer.function != NULL) {
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del_timer_sync(&priv->timer);
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priv->timer.function = NULL;
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}
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}
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#ifdef CONFIG_PM
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static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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if (netif_running(dev))
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tlan_stop(dev);
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netif_device_detach(dev);
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pci_save_state(pdev);
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pci_disable_device(pdev);
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pci_wake_from_d3(pdev, false);
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pci_set_power_state(pdev, PCI_D3hot);
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return 0;
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}
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static int tlan_resume(struct pci_dev *pdev)
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{
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struct net_device *dev = pci_get_drvdata(pdev);
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int rc = pci_enable_device(pdev);
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if (rc)
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return rc;
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pci_restore_state(pdev);
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pci_enable_wake(pdev, PCI_D0, 0);
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netif_device_attach(dev);
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if (netif_running(dev))
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tlan_start(dev);
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return 0;
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}
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#else /* CONFIG_PM */
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#define tlan_suspend NULL
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#define tlan_resume NULL
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#endif /* CONFIG_PM */
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static struct pci_driver tlan_driver = {
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.name = "tlan",
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.id_table = tlan_pci_tbl,
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.probe = tlan_init_one,
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.remove = tlan_remove_one,
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.suspend = tlan_suspend,
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.resume = tlan_resume,
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};
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static int __init tlan_probe(void)
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{
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int rc = -ENODEV;
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pr_info("%s", tlan_banner);
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TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
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|
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/* Use new style PCI probing. Now the kernel will
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do most of this for us */
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rc = pci_register_driver(&tlan_driver);
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if (rc != 0) {
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pr_err("Could not register pci driver\n");
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goto err_out_pci_free;
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}
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TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
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tlan_eisa_probe();
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|
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pr_info("%d device%s installed, PCI: %d EISA: %d\n",
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tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
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tlan_have_pci, tlan_have_eisa);
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if (tlan_devices_installed == 0) {
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rc = -ENODEV;
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goto err_out_pci_unreg;
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}
|
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return 0;
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|
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err_out_pci_unreg:
|
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pci_unregister_driver(&tlan_driver);
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err_out_pci_free:
|
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return rc;
|
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}
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|
|
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static int tlan_init_one(struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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return tlan_probe1(pdev, -1, -1, 0, ent);
|
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}
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|
|
|
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/*
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***************************************************************
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* tlan_probe1
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*
|
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* Returns:
|
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* 0 on success, error code on error
|
|
* Parms:
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* none
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*
|
|
* The name is lower case to fit in with all the rest of
|
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* the netcard_probe names. This function looks for
|
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* another TLan based adapter, setting it up with the
|
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* allocated device struct if one is found.
|
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* tlan_probe has been ported to the new net API and
|
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* now allocates its own device structure. This function
|
|
* is also used by modules.
|
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*
|
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**************************************************************/
|
|
|
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static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
|
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const struct pci_device_id *ent)
|
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{
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|
|
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struct net_device *dev;
|
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struct tlan_priv *priv;
|
|
u16 device_id;
|
|
int reg, rc = -ENODEV;
|
|
|
|
#ifdef CONFIG_PCI
|
|
if (pdev) {
|
|
rc = pci_enable_device(pdev);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = pci_request_regions(pdev, tlan_signature);
|
|
if (rc) {
|
|
pr_err("Could not reserve IO regions\n");
|
|
goto err_out;
|
|
}
|
|
}
|
|
#endif /* CONFIG_PCI */
|
|
|
|
dev = alloc_etherdev(sizeof(struct tlan_priv));
|
|
if (dev == NULL) {
|
|
rc = -ENOMEM;
|
|
goto err_out_regions;
|
|
}
|
|
SET_NETDEV_DEV(dev, &pdev->dev);
|
|
|
|
priv = netdev_priv(dev);
|
|
|
|
priv->pci_dev = pdev;
|
|
priv->dev = dev;
|
|
|
|
/* Is this a PCI device? */
|
|
if (pdev) {
|
|
u32 pci_io_base = 0;
|
|
|
|
priv->adapter = &board_info[ent->driver_data];
|
|
|
|
rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (rc) {
|
|
pr_err("No suitable PCI mapping available\n");
|
|
goto err_out_free_dev;
|
|
}
|
|
|
|
for (reg = 0; reg <= 5; reg++) {
|
|
if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
|
|
pci_io_base = pci_resource_start(pdev, reg);
|
|
TLAN_DBG(TLAN_DEBUG_GNRL,
|
|
"IO mapping is available at %x.\n",
|
|
pci_io_base);
|
|
break;
|
|
}
|
|
}
|
|
if (!pci_io_base) {
|
|
pr_err("No IO mappings available\n");
|
|
rc = -EIO;
|
|
goto err_out_free_dev;
|
|
}
|
|
|
|
dev->base_addr = pci_io_base;
|
|
dev->irq = pdev->irq;
|
|
priv->adapter_rev = pdev->revision;
|
|
pci_set_master(pdev);
|
|
pci_set_drvdata(pdev, dev);
|
|
|
|
} else { /* EISA card */
|
|
/* This is a hack. We need to know which board structure
|
|
* is suited for this adapter */
|
|
device_id = inw(ioaddr + EISA_ID2);
|
|
if (device_id == 0x20F1) {
|
|
priv->adapter = &board_info[13]; /* NetFlex-3/E */
|
|
priv->adapter_rev = 23; /* TLAN 2.3 */
|
|
} else {
|
|
priv->adapter = &board_info[14];
|
|
priv->adapter_rev = 10; /* TLAN 1.0 */
|
|
}
|
|
dev->base_addr = ioaddr;
|
|
dev->irq = irq;
|
|
}
|
|
|
|
/* Kernel parameters */
|
|
if (dev->mem_start) {
|
|
priv->aui = dev->mem_start & 0x01;
|
|
priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
|
|
: (dev->mem_start & 0x06) >> 1;
|
|
priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
|
|
: (dev->mem_start & 0x18) >> 3;
|
|
|
|
if (priv->speed == 0x1)
|
|
priv->speed = TLAN_SPEED_10;
|
|
else if (priv->speed == 0x2)
|
|
priv->speed = TLAN_SPEED_100;
|
|
|
|
debug = priv->debug = dev->mem_end;
|
|
} else {
|
|
priv->aui = aui[boards_found];
|
|
priv->speed = speed[boards_found];
|
|
priv->duplex = duplex[boards_found];
|
|
priv->debug = debug;
|
|
}
|
|
|
|
/* This will be used when we get an adapter error from
|
|
* within our irq handler */
|
|
INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
|
|
|
|
spin_lock_init(&priv->lock);
|
|
|
|
rc = tlan_init(dev);
|
|
if (rc) {
|
|
pr_err("Could not set up device\n");
|
|
goto err_out_free_dev;
|
|
}
|
|
|
|
rc = register_netdev(dev);
|
|
if (rc) {
|
|
pr_err("Could not register device\n");
|
|
goto err_out_uninit;
|
|
}
|
|
|
|
|
|
tlan_devices_installed++;
|
|
boards_found++;
|
|
|
|
/* pdev is NULL if this is an EISA device */
|
|
if (pdev)
|
|
tlan_have_pci++;
|
|
else {
|
|
priv->next_device = tlan_eisa_devices;
|
|
tlan_eisa_devices = dev;
|
|
tlan_have_eisa++;
|
|
}
|
|
|
|
netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
|
|
(int)dev->irq,
|
|
(int)dev->base_addr,
|
|
priv->adapter->device_label,
|
|
priv->adapter_rev);
|
|
return 0;
|
|
|
|
err_out_uninit:
|
|
pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
|
|
priv->dma_storage_dma);
|
|
err_out_free_dev:
|
|
free_netdev(dev);
|
|
err_out_regions:
|
|
#ifdef CONFIG_PCI
|
|
if (pdev)
|
|
pci_release_regions(pdev);
|
|
#endif
|
|
err_out:
|
|
if (pdev)
|
|
pci_disable_device(pdev);
|
|
return rc;
|
|
}
|
|
|
|
|
|
static void tlan_eisa_cleanup(void)
|
|
{
|
|
struct net_device *dev;
|
|
struct tlan_priv *priv;
|
|
|
|
while (tlan_have_eisa) {
|
|
dev = tlan_eisa_devices;
|
|
priv = netdev_priv(dev);
|
|
if (priv->dma_storage) {
|
|
pci_free_consistent(priv->pci_dev, priv->dma_size,
|
|
priv->dma_storage,
|
|
priv->dma_storage_dma);
|
|
}
|
|
release_region(dev->base_addr, 0x10);
|
|
unregister_netdev(dev);
|
|
tlan_eisa_devices = priv->next_device;
|
|
free_netdev(dev);
|
|
tlan_have_eisa--;
|
|
}
|
|
}
|
|
|
|
|
|
static void __exit tlan_exit(void)
|
|
{
|
|
pci_unregister_driver(&tlan_driver);
|
|
|
|
if (tlan_have_eisa)
|
|
tlan_eisa_cleanup();
|
|
|
|
}
|
|
|
|
|
|
/* Module loading/unloading */
|
|
module_init(tlan_probe);
|
|
module_exit(tlan_exit);
|
|
|
|
|
|
|
|
/**************************************************************
|
|
* tlan_eisa_probe
|
|
*
|
|
* Returns: 0 on success, 1 otherwise
|
|
*
|
|
* Parms: None
|
|
*
|
|
*
|
|
* This functions probes for EISA devices and calls
|
|
* TLan_probe1 when one is found.
|
|
*
|
|
*************************************************************/
|
|
|
|
static void __init tlan_eisa_probe(void)
|
|
{
|
|
long ioaddr;
|
|
int rc = -ENODEV;
|
|
int irq;
|
|
u16 device_id;
|
|
|
|
if (!EISA_bus) {
|
|
TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
|
|
return;
|
|
}
|
|
|
|
/* Loop through all slots of the EISA bus */
|
|
for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
|
|
|
|
TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
|
|
(int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
|
|
TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
|
|
(int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
|
|
|
|
|
|
TLAN_DBG(TLAN_DEBUG_PROBE,
|
|
"Probing for EISA adapter at IO: 0x%4x : ",
|
|
(int) ioaddr);
|
|
if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
|
|
goto out;
|
|
|
|
if (inw(ioaddr + EISA_ID) != 0x110E) {
|
|
release_region(ioaddr, 0x10);
|
|
goto out;
|
|
}
|
|
|
|
device_id = inw(ioaddr + EISA_ID2);
|
|
if (device_id != 0x20F1 && device_id != 0x40F1) {
|
|
release_region(ioaddr, 0x10);
|
|
goto out;
|
|
}
|
|
|
|
/* check if adapter is enabled */
|
|
if (inb(ioaddr + EISA_CR) != 0x1) {
|
|
release_region(ioaddr, 0x10);
|
|
goto out2;
|
|
}
|
|
|
|
if (debug == 0x10)
|
|
pr_info("Found one\n");
|
|
|
|
|
|
/* Get irq from board */
|
|
switch (inb(ioaddr + 0xcc0)) {
|
|
case(0x10):
|
|
irq = 5;
|
|
break;
|
|
case(0x20):
|
|
irq = 9;
|
|
break;
|
|
case(0x40):
|
|
irq = 10;
|
|
break;
|
|
case(0x80):
|
|
irq = 11;
|
|
break;
|
|
default:
|
|
goto out;
|
|
}
|
|
|
|
|
|
/* Setup the newly found eisa adapter */
|
|
rc = tlan_probe1(NULL, ioaddr, irq,
|
|
12, NULL);
|
|
continue;
|
|
|
|
out:
|
|
if (debug == 0x10)
|
|
pr_info("None found\n");
|
|
continue;
|
|
|
|
out2:
|
|
if (debug == 0x10)
|
|
pr_info("Card found but it is not enabled, skipping\n");
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
static void tlan_poll(struct net_device *dev)
|
|
{
|
|
disable_irq(dev->irq);
|
|
tlan_handle_interrupt(dev->irq, dev);
|
|
enable_irq(dev->irq);
|
|
}
|
|
#endif
|
|
|
|
static const struct net_device_ops tlan_netdev_ops = {
|
|
.ndo_open = tlan_open,
|
|
.ndo_stop = tlan_close,
|
|
.ndo_start_xmit = tlan_start_tx,
|
|
.ndo_tx_timeout = tlan_tx_timeout,
|
|
.ndo_get_stats = tlan_get_stats,
|
|
.ndo_set_rx_mode = tlan_set_multicast_list,
|
|
.ndo_do_ioctl = tlan_ioctl,
|
|
.ndo_change_mtu = eth_change_mtu,
|
|
.ndo_set_mac_address = eth_mac_addr,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = tlan_poll,
|
|
#endif
|
|
};
|
|
|
|
static void tlan_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *info)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
|
|
strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
|
|
if (priv->pci_dev)
|
|
strlcpy(info->bus_info, pci_name(priv->pci_dev),
|
|
sizeof(info->bus_info));
|
|
else
|
|
strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
|
|
}
|
|
|
|
static int tlan_get_eeprom_len(struct net_device *dev)
|
|
{
|
|
return TLAN_EEPROM_SIZE;
|
|
}
|
|
|
|
static int tlan_get_eeprom(struct net_device *dev,
|
|
struct ethtool_eeprom *eeprom, u8 *data)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < TLAN_EEPROM_SIZE; i++)
|
|
if (tlan_ee_read_byte(dev, i, &data[i]))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct ethtool_ops tlan_ethtool_ops = {
|
|
.get_drvinfo = tlan_get_drvinfo,
|
|
.get_link = ethtool_op_get_link,
|
|
.get_eeprom_len = tlan_get_eeprom_len,
|
|
.get_eeprom = tlan_get_eeprom,
|
|
};
|
|
|
|
/***************************************************************
|
|
* tlan_init
|
|
*
|
|
* Returns:
|
|
* 0 on success, error code otherwise.
|
|
* Parms:
|
|
* dev The structure of the device to be
|
|
* init'ed.
|
|
*
|
|
* This function completes the initialization of the
|
|
* device structure and driver. It reserves the IO
|
|
* addresses, allocates memory for the lists and bounce
|
|
* buffers, retrieves the MAC address from the eeprom
|
|
* and assignes the device's methods.
|
|
*
|
|
**************************************************************/
|
|
|
|
static int tlan_init(struct net_device *dev)
|
|
{
|
|
int dma_size;
|
|
int err;
|
|
int i;
|
|
struct tlan_priv *priv;
|
|
|
|
priv = netdev_priv(dev);
|
|
|
|
dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
|
|
* (sizeof(struct tlan_list));
|
|
priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
|
|
dma_size,
|
|
&priv->dma_storage_dma);
|
|
priv->dma_size = dma_size;
|
|
|
|
if (priv->dma_storage == NULL) {
|
|
pr_err("Could not allocate lists and buffers for %s\n",
|
|
dev->name);
|
|
return -ENOMEM;
|
|
}
|
|
memset(priv->dma_storage, 0, dma_size);
|
|
priv->rx_list = (struct tlan_list *)
|
|
ALIGN((unsigned long)priv->dma_storage, 8);
|
|
priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
|
|
priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
|
|
priv->tx_list_dma =
|
|
priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
|
|
|
|
err = 0;
|
|
for (i = 0; i < ETH_ALEN; i++)
|
|
err |= tlan_ee_read_byte(dev,
|
|
(u8) priv->adapter->addr_ofs + i,
|
|
(u8 *) &dev->dev_addr[i]);
|
|
if (err) {
|
|
pr_err("%s: Error reading MAC from eeprom: %d\n",
|
|
dev->name, err);
|
|
}
|
|
/* Olicom OC-2325/OC-2326 have the address byte-swapped */
|
|
if (priv->adapter->addr_ofs == 0xf8) {
|
|
for (i = 0; i < ETH_ALEN; i += 2) {
|
|
char tmp = dev->dev_addr[i];
|
|
dev->dev_addr[i] = dev->dev_addr[i + 1];
|
|
dev->dev_addr[i + 1] = tmp;
|
|
}
|
|
}
|
|
|
|
netif_carrier_off(dev);
|
|
|
|
/* Device methods */
|
|
dev->netdev_ops = &tlan_netdev_ops;
|
|
dev->ethtool_ops = &tlan_ethtool_ops;
|
|
dev->watchdog_timeo = TX_TIMEOUT;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_open
|
|
*
|
|
* Returns:
|
|
* 0 on success, error code otherwise.
|
|
* Parms:
|
|
* dev Structure of device to be opened.
|
|
*
|
|
* This routine puts the driver and TLAN adapter in a
|
|
* state where it is ready to send and receive packets.
|
|
* It allocates the IRQ, resets and brings the adapter
|
|
* out of reset, and allows interrupts. It also delays
|
|
* the startup for autonegotiation or sends a Rx GO
|
|
* command to the adapter, as appropriate.
|
|
*
|
|
**************************************************************/
|
|
|
|
static int tlan_open(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
int err;
|
|
|
|
priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
|
|
err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
|
|
dev->name, dev);
|
|
|
|
if (err) {
|
|
netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
|
|
dev->irq);
|
|
return err;
|
|
}
|
|
|
|
init_timer(&priv->timer);
|
|
init_timer(&priv->media_timer);
|
|
|
|
tlan_start(dev);
|
|
|
|
TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
|
|
dev->name, priv->tlan_rev);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**************************************************************
|
|
* tlan_ioctl
|
|
*
|
|
* Returns:
|
|
* 0 on success, error code otherwise
|
|
* Params:
|
|
* dev structure of device to receive ioctl.
|
|
*
|
|
* rq ifreq structure to hold userspace data.
|
|
*
|
|
* cmd ioctl command.
|
|
*
|
|
*
|
|
*************************************************************/
|
|
|
|
static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
struct mii_ioctl_data *data = if_mii(rq);
|
|
u32 phy = priv->phy[priv->phy_num];
|
|
|
|
if (!priv->phy_online)
|
|
return -EAGAIN;
|
|
|
|
switch (cmd) {
|
|
case SIOCGMIIPHY: /* get address of MII PHY in use. */
|
|
data->phy_id = phy;
|
|
|
|
|
|
case SIOCGMIIREG: /* read MII PHY register. */
|
|
tlan_mii_read_reg(dev, data->phy_id & 0x1f,
|
|
data->reg_num & 0x1f, &data->val_out);
|
|
return 0;
|
|
|
|
|
|
case SIOCSMIIREG: /* write MII PHY register. */
|
|
tlan_mii_write_reg(dev, data->phy_id & 0x1f,
|
|
data->reg_num & 0x1f, data->val_in);
|
|
return 0;
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
}
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_tx_timeout
|
|
*
|
|
* Returns: nothing
|
|
*
|
|
* Params:
|
|
* dev structure of device which timed out
|
|
* during transmit.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_tx_timeout(struct net_device *dev)
|
|
{
|
|
|
|
TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
|
|
|
|
/* Ok so we timed out, lets see what we can do about it...*/
|
|
tlan_free_lists(dev);
|
|
tlan_reset_lists(dev);
|
|
tlan_read_and_clear_stats(dev, TLAN_IGNORE);
|
|
tlan_reset_adapter(dev);
|
|
dev->trans_start = jiffies; /* prevent tx timeout */
|
|
netif_wake_queue(dev);
|
|
|
|
}
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_tx_timeout_work
|
|
*
|
|
* Returns: nothing
|
|
*
|
|
* Params:
|
|
* work work item of device which timed out
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_tx_timeout_work(struct work_struct *work)
|
|
{
|
|
struct tlan_priv *priv =
|
|
container_of(work, struct tlan_priv, tlan_tqueue);
|
|
|
|
tlan_tx_timeout(priv->dev);
|
|
}
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_start_tx
|
|
*
|
|
* Returns:
|
|
* 0 on success, non-zero on failure.
|
|
* Parms:
|
|
* skb A pointer to the sk_buff containing the
|
|
* frame to be sent.
|
|
* dev The device to send the data on.
|
|
*
|
|
* This function adds a frame to the Tx list to be sent
|
|
* ASAP. First it verifies that the adapter is ready and
|
|
* there is room in the queue. Then it sets up the next
|
|
* available list, copies the frame to the corresponding
|
|
* buffer. If the adapter Tx channel is idle, it gives
|
|
* the adapter a Tx Go command on the list, otherwise it
|
|
* sets the forward address of the previous list to point
|
|
* to this one. Then it frees the sk_buff.
|
|
*
|
|
**************************************************************/
|
|
|
|
static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
dma_addr_t tail_list_phys;
|
|
struct tlan_list *tail_list;
|
|
unsigned long flags;
|
|
unsigned int txlen;
|
|
|
|
if (!priv->phy_online) {
|
|
TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
|
|
dev->name);
|
|
dev_kfree_skb_any(skb);
|
|
return NETDEV_TX_OK;
|
|
}
|
|
|
|
if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
|
|
return NETDEV_TX_OK;
|
|
txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
|
|
|
|
tail_list = priv->tx_list + priv->tx_tail;
|
|
tail_list_phys =
|
|
priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
|
|
|
|
if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
|
|
TLAN_DBG(TLAN_DEBUG_TX,
|
|
"TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
|
|
dev->name, priv->tx_head, priv->tx_tail);
|
|
netif_stop_queue(dev);
|
|
priv->tx_busy_count++;
|
|
return NETDEV_TX_BUSY;
|
|
}
|
|
|
|
tail_list->forward = 0;
|
|
|
|
tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
|
|
skb->data, txlen,
|
|
PCI_DMA_TODEVICE);
|
|
tlan_store_skb(tail_list, skb);
|
|
|
|
tail_list->frame_size = (u16) txlen;
|
|
tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
|
|
tail_list->buffer[1].count = 0;
|
|
tail_list->buffer[1].address = 0;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
tail_list->c_stat = TLAN_CSTAT_READY;
|
|
if (!priv->tx_in_progress) {
|
|
priv->tx_in_progress = 1;
|
|
TLAN_DBG(TLAN_DEBUG_TX,
|
|
"TRANSMIT: Starting TX on buffer %d\n",
|
|
priv->tx_tail);
|
|
outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
|
|
outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
|
|
} else {
|
|
TLAN_DBG(TLAN_DEBUG_TX,
|
|
"TRANSMIT: Adding buffer %d to TX channel\n",
|
|
priv->tx_tail);
|
|
if (priv->tx_tail == 0) {
|
|
(priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
|
|
= tail_list_phys;
|
|
} else {
|
|
(priv->tx_list + (priv->tx_tail - 1))->forward
|
|
= tail_list_phys;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
|
|
|
|
return NETDEV_TX_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_handle_interrupt
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* irq The line on which the interrupt
|
|
* occurred.
|
|
* dev_id A pointer to the device assigned to
|
|
* this irq line.
|
|
*
|
|
* This function handles an interrupt generated by its
|
|
* assigned TLAN adapter. The function deactivates
|
|
* interrupts on its adapter, records the type of
|
|
* interrupt, executes the appropriate subhandler, and
|
|
* acknowdges the interrupt to the adapter (thus
|
|
* re-enabling adapter interrupts.
|
|
*
|
|
**************************************************************/
|
|
|
|
static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
|
|
{
|
|
struct net_device *dev = dev_id;
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u16 host_int;
|
|
u16 type;
|
|
|
|
spin_lock(&priv->lock);
|
|
|
|
host_int = inw(dev->base_addr + TLAN_HOST_INT);
|
|
type = (host_int & TLAN_HI_IT_MASK) >> 2;
|
|
if (type) {
|
|
u32 ack;
|
|
u32 host_cmd;
|
|
|
|
outw(host_int, dev->base_addr + TLAN_HOST_INT);
|
|
ack = tlan_int_vector[type](dev, host_int);
|
|
|
|
if (ack) {
|
|
host_cmd = TLAN_HC_ACK | ack | (type << 18);
|
|
outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
|
|
}
|
|
}
|
|
|
|
spin_unlock(&priv->lock);
|
|
|
|
return IRQ_RETVAL(type);
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_close
|
|
*
|
|
* Returns:
|
|
* An error code.
|
|
* Parms:
|
|
* dev The device structure of the device to
|
|
* close.
|
|
*
|
|
* This function shuts down the adapter. It records any
|
|
* stats, puts the adapter into reset state, deactivates
|
|
* its time as needed, and frees the irq it is using.
|
|
*
|
|
**************************************************************/
|
|
|
|
static int tlan_close(struct net_device *dev)
|
|
{
|
|
tlan_stop(dev);
|
|
|
|
free_irq(dev->irq, dev);
|
|
tlan_free_lists(dev);
|
|
TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_get_stats
|
|
*
|
|
* Returns:
|
|
* A pointer to the device's statistics structure.
|
|
* Parms:
|
|
* dev The device structure to return the
|
|
* stats for.
|
|
*
|
|
* This function updates the devices statistics by reading
|
|
* the TLAN chip's onboard registers. Then it returns the
|
|
* address of the statistics structure.
|
|
*
|
|
**************************************************************/
|
|
|
|
static struct net_device_stats *tlan_get_stats(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
int i;
|
|
|
|
/* Should only read stats if open ? */
|
|
tlan_read_and_clear_stats(dev, TLAN_RECORD);
|
|
|
|
TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
|
|
priv->rx_eoc_count);
|
|
TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
|
|
priv->tx_busy_count);
|
|
if (debug & TLAN_DEBUG_GNRL) {
|
|
tlan_print_dio(dev->base_addr);
|
|
tlan_phy_print(dev);
|
|
}
|
|
if (debug & TLAN_DEBUG_LIST) {
|
|
for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
|
|
tlan_print_list(priv->rx_list + i, "RX", i);
|
|
for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
|
|
tlan_print_list(priv->tx_list + i, "TX", i);
|
|
}
|
|
|
|
return &dev->stats;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_set_multicast_list
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* dev The device structure to set the
|
|
* multicast list for.
|
|
*
|
|
* This function sets the TLAN adaptor to various receive
|
|
* modes. If the IFF_PROMISC flag is set, promiscuous
|
|
* mode is acitviated. Otherwise, promiscuous mode is
|
|
* turned off. If the IFF_ALLMULTI flag is set, then
|
|
* the hash table is set to receive all group addresses.
|
|
* Otherwise, the first three multicast addresses are
|
|
* stored in AREG_1-3, and the rest are selected via the
|
|
* hash table, as necessary.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_set_multicast_list(struct net_device *dev)
|
|
{
|
|
struct netdev_hw_addr *ha;
|
|
u32 hash1 = 0;
|
|
u32 hash2 = 0;
|
|
int i;
|
|
u32 offset;
|
|
u8 tmp;
|
|
|
|
if (dev->flags & IFF_PROMISC) {
|
|
tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
|
|
tlan_dio_write8(dev->base_addr,
|
|
TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
|
|
} else {
|
|
tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
|
|
tlan_dio_write8(dev->base_addr,
|
|
TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
|
|
if (dev->flags & IFF_ALLMULTI) {
|
|
for (i = 0; i < 3; i++)
|
|
tlan_set_mac(dev, i + 1, NULL);
|
|
tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
|
|
0xffffffff);
|
|
tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
|
|
0xffffffff);
|
|
} else {
|
|
i = 0;
|
|
netdev_for_each_mc_addr(ha, dev) {
|
|
if (i < 3) {
|
|
tlan_set_mac(dev, i + 1,
|
|
(char *) &ha->addr);
|
|
} else {
|
|
offset =
|
|
tlan_hash_func((u8 *)&ha->addr);
|
|
if (offset < 32)
|
|
hash1 |= (1 << offset);
|
|
else
|
|
hash2 |= (1 << (offset - 32));
|
|
}
|
|
i++;
|
|
}
|
|
for ( ; i < 3; i++)
|
|
tlan_set_mac(dev, i + 1, NULL);
|
|
tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
|
|
tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
******************************************************************************
|
|
|
|
ThunderLAN driver interrupt vectors and table
|
|
|
|
please see chap. 4, "Interrupt Handling" of the "ThunderLAN
|
|
Programmer's Guide" for more informations on handling interrupts
|
|
generated by TLAN based adapters.
|
|
|
|
******************************************************************************
|
|
*****************************************************************************/
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_handle_tx_eof
|
|
*
|
|
* Returns:
|
|
* 1
|
|
* Parms:
|
|
* dev Device assigned the IRQ that was
|
|
* raised.
|
|
* host_int The contents of the HOST_INT
|
|
* port.
|
|
*
|
|
* This function handles Tx EOF interrupts which are raised
|
|
* by the adapter when it has completed sending the
|
|
* contents of a buffer. If detemines which list/buffer
|
|
* was completed and resets it. If the buffer was the last
|
|
* in the channel (EOC), then the function checks to see if
|
|
* another buffer is ready to send, and if so, sends a Tx
|
|
* Go command. Finally, the driver activates/continues the
|
|
* activity LED.
|
|
*
|
|
**************************************************************/
|
|
|
|
static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
int eoc = 0;
|
|
struct tlan_list *head_list;
|
|
dma_addr_t head_list_phys;
|
|
u32 ack = 0;
|
|
u16 tmp_c_stat;
|
|
|
|
TLAN_DBG(TLAN_DEBUG_TX,
|
|
"TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
|
|
priv->tx_head, priv->tx_tail);
|
|
head_list = priv->tx_list + priv->tx_head;
|
|
|
|
while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
|
|
&& (ack < 255)) {
|
|
struct sk_buff *skb = tlan_get_skb(head_list);
|
|
|
|
ack++;
|
|
pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
|
|
max(skb->len,
|
|
(unsigned int)TLAN_MIN_FRAME_SIZE),
|
|
PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_any(skb);
|
|
head_list->buffer[8].address = 0;
|
|
head_list->buffer[9].address = 0;
|
|
|
|
if (tmp_c_stat & TLAN_CSTAT_EOC)
|
|
eoc = 1;
|
|
|
|
dev->stats.tx_bytes += head_list->frame_size;
|
|
|
|
head_list->c_stat = TLAN_CSTAT_UNUSED;
|
|
netif_start_queue(dev);
|
|
CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
|
|
head_list = priv->tx_list + priv->tx_head;
|
|
}
|
|
|
|
if (!ack)
|
|
netdev_info(dev,
|
|
"Received interrupt for uncompleted TX frame\n");
|
|
|
|
if (eoc) {
|
|
TLAN_DBG(TLAN_DEBUG_TX,
|
|
"TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
|
|
priv->tx_head, priv->tx_tail);
|
|
head_list = priv->tx_list + priv->tx_head;
|
|
head_list_phys = priv->tx_list_dma
|
|
+ sizeof(struct tlan_list)*priv->tx_head;
|
|
if ((head_list->c_stat & TLAN_CSTAT_READY)
|
|
== TLAN_CSTAT_READY) {
|
|
outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
|
|
ack |= TLAN_HC_GO;
|
|
} else {
|
|
priv->tx_in_progress = 0;
|
|
}
|
|
}
|
|
|
|
if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
|
|
tlan_dio_write8(dev->base_addr,
|
|
TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
|
|
if (priv->timer.function == NULL) {
|
|
priv->timer.function = tlan_timer;
|
|
priv->timer.data = (unsigned long) dev;
|
|
priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
|
|
priv->timer_set_at = jiffies;
|
|
priv->timer_type = TLAN_TIMER_ACTIVITY;
|
|
add_timer(&priv->timer);
|
|
} else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
|
|
priv->timer_set_at = jiffies;
|
|
}
|
|
}
|
|
|
|
return ack;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* TLan_HandleStatOverflow
|
|
*
|
|
* Returns:
|
|
* 1
|
|
* Parms:
|
|
* dev Device assigned the IRQ that was
|
|
* raised.
|
|
* host_int The contents of the HOST_INT
|
|
* port.
|
|
*
|
|
* This function handles the Statistics Overflow interrupt
|
|
* which means that one or more of the TLAN statistics
|
|
* registers has reached 1/2 capacity and needs to be read.
|
|
*
|
|
**************************************************************/
|
|
|
|
static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
|
|
{
|
|
tlan_read_and_clear_stats(dev, TLAN_RECORD);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* TLan_HandleRxEOF
|
|
*
|
|
* Returns:
|
|
* 1
|
|
* Parms:
|
|
* dev Device assigned the IRQ that was
|
|
* raised.
|
|
* host_int The contents of the HOST_INT
|
|
* port.
|
|
*
|
|
* This function handles the Rx EOF interrupt which
|
|
* indicates a frame has been received by the adapter from
|
|
* the net and the frame has been transferred to memory.
|
|
* The function determines the bounce buffer the frame has
|
|
* been loaded into, creates a new sk_buff big enough to
|
|
* hold the frame, and sends it to protocol stack. It
|
|
* then resets the used buffer and appends it to the end
|
|
* of the list. If the frame was the last in the Rx
|
|
* channel (EOC), the function restarts the receive channel
|
|
* by sending an Rx Go command to the adapter. Then it
|
|
* activates/continues the activity LED.
|
|
*
|
|
**************************************************************/
|
|
|
|
static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u32 ack = 0;
|
|
int eoc = 0;
|
|
struct tlan_list *head_list;
|
|
struct sk_buff *skb;
|
|
struct tlan_list *tail_list;
|
|
u16 tmp_c_stat;
|
|
dma_addr_t head_list_phys;
|
|
|
|
TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
|
|
priv->rx_head, priv->rx_tail);
|
|
head_list = priv->rx_list + priv->rx_head;
|
|
head_list_phys =
|
|
priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
|
|
|
|
while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
|
|
&& (ack < 255)) {
|
|
dma_addr_t frame_dma = head_list->buffer[0].address;
|
|
u32 frame_size = head_list->frame_size;
|
|
struct sk_buff *new_skb;
|
|
|
|
ack++;
|
|
if (tmp_c_stat & TLAN_CSTAT_EOC)
|
|
eoc = 1;
|
|
|
|
new_skb = netdev_alloc_skb_ip_align(dev,
|
|
TLAN_MAX_FRAME_SIZE + 5);
|
|
if (!new_skb)
|
|
goto drop_and_reuse;
|
|
|
|
skb = tlan_get_skb(head_list);
|
|
pci_unmap_single(priv->pci_dev, frame_dma,
|
|
TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
|
|
skb_put(skb, frame_size);
|
|
|
|
dev->stats.rx_bytes += frame_size;
|
|
|
|
skb->protocol = eth_type_trans(skb, dev);
|
|
netif_rx(skb);
|
|
|
|
head_list->buffer[0].address =
|
|
pci_map_single(priv->pci_dev, new_skb->data,
|
|
TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
|
|
|
|
tlan_store_skb(head_list, new_skb);
|
|
drop_and_reuse:
|
|
head_list->forward = 0;
|
|
head_list->c_stat = 0;
|
|
tail_list = priv->rx_list + priv->rx_tail;
|
|
tail_list->forward = head_list_phys;
|
|
|
|
CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
|
|
CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
|
|
head_list = priv->rx_list + priv->rx_head;
|
|
head_list_phys = priv->rx_list_dma
|
|
+ sizeof(struct tlan_list)*priv->rx_head;
|
|
}
|
|
|
|
if (!ack)
|
|
netdev_info(dev,
|
|
"Received interrupt for uncompleted RX frame\n");
|
|
|
|
|
|
if (eoc) {
|
|
TLAN_DBG(TLAN_DEBUG_RX,
|
|
"RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
|
|
priv->rx_head, priv->rx_tail);
|
|
head_list = priv->rx_list + priv->rx_head;
|
|
head_list_phys = priv->rx_list_dma
|
|
+ sizeof(struct tlan_list)*priv->rx_head;
|
|
outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
|
|
ack |= TLAN_HC_GO | TLAN_HC_RT;
|
|
priv->rx_eoc_count++;
|
|
}
|
|
|
|
if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
|
|
tlan_dio_write8(dev->base_addr,
|
|
TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
|
|
if (priv->timer.function == NULL) {
|
|
priv->timer.function = tlan_timer;
|
|
priv->timer.data = (unsigned long) dev;
|
|
priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
|
|
priv->timer_set_at = jiffies;
|
|
priv->timer_type = TLAN_TIMER_ACTIVITY;
|
|
add_timer(&priv->timer);
|
|
} else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
|
|
priv->timer_set_at = jiffies;
|
|
}
|
|
}
|
|
|
|
return ack;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_handle_dummy
|
|
*
|
|
* Returns:
|
|
* 1
|
|
* Parms:
|
|
* dev Device assigned the IRQ that was
|
|
* raised.
|
|
* host_int The contents of the HOST_INT
|
|
* port.
|
|
*
|
|
* This function handles the Dummy interrupt, which is
|
|
* raised whenever a test interrupt is generated by setting
|
|
* the Req_Int bit of HOST_CMD to 1.
|
|
*
|
|
**************************************************************/
|
|
|
|
static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
|
|
{
|
|
netdev_info(dev, "Test interrupt\n");
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_handle_tx_eoc
|
|
*
|
|
* Returns:
|
|
* 1
|
|
* Parms:
|
|
* dev Device assigned the IRQ that was
|
|
* raised.
|
|
* host_int The contents of the HOST_INT
|
|
* port.
|
|
*
|
|
* This driver is structured to determine EOC occurrences by
|
|
* reading the CSTAT member of the list structure. Tx EOC
|
|
* interrupts are disabled via the DIO INTDIS register.
|
|
* However, TLAN chips before revision 3.0 didn't have this
|
|
* functionality, so process EOC events if this is the
|
|
* case.
|
|
*
|
|
**************************************************************/
|
|
|
|
static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
struct tlan_list *head_list;
|
|
dma_addr_t head_list_phys;
|
|
u32 ack = 1;
|
|
|
|
host_int = 0;
|
|
if (priv->tlan_rev < 0x30) {
|
|
TLAN_DBG(TLAN_DEBUG_TX,
|
|
"TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
|
|
priv->tx_head, priv->tx_tail);
|
|
head_list = priv->tx_list + priv->tx_head;
|
|
head_list_phys = priv->tx_list_dma
|
|
+ sizeof(struct tlan_list)*priv->tx_head;
|
|
if ((head_list->c_stat & TLAN_CSTAT_READY)
|
|
== TLAN_CSTAT_READY) {
|
|
netif_stop_queue(dev);
|
|
outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
|
|
ack |= TLAN_HC_GO;
|
|
} else {
|
|
priv->tx_in_progress = 0;
|
|
}
|
|
}
|
|
|
|
return ack;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_handle_status_check
|
|
*
|
|
* Returns:
|
|
* 0 if Adapter check, 1 if Network Status check.
|
|
* Parms:
|
|
* dev Device assigned the IRQ that was
|
|
* raised.
|
|
* host_int The contents of the HOST_INT
|
|
* port.
|
|
*
|
|
* This function handles Adapter Check/Network Status
|
|
* interrupts generated by the adapter. It checks the
|
|
* vector in the HOST_INT register to determine if it is
|
|
* an Adapter Check interrupt. If so, it resets the
|
|
* adapter. Otherwise it clears the status registers
|
|
* and services the PHY.
|
|
*
|
|
**************************************************************/
|
|
|
|
static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u32 ack;
|
|
u32 error;
|
|
u8 net_sts;
|
|
u32 phy;
|
|
u16 tlphy_ctl;
|
|
u16 tlphy_sts;
|
|
|
|
ack = 1;
|
|
if (host_int & TLAN_HI_IV_MASK) {
|
|
netif_stop_queue(dev);
|
|
error = inl(dev->base_addr + TLAN_CH_PARM);
|
|
netdev_info(dev, "Adaptor Error = 0x%x\n", error);
|
|
tlan_read_and_clear_stats(dev, TLAN_RECORD);
|
|
outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
|
|
|
|
schedule_work(&priv->tlan_tqueue);
|
|
|
|
netif_wake_queue(dev);
|
|
ack = 0;
|
|
} else {
|
|
TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
|
|
phy = priv->phy[priv->phy_num];
|
|
|
|
net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
|
|
if (net_sts) {
|
|
tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
|
|
TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
|
|
dev->name, (unsigned) net_sts);
|
|
}
|
|
if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
|
|
tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
|
|
tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
|
|
if (!(tlphy_sts & TLAN_TS_POLOK) &&
|
|
!(tlphy_ctl & TLAN_TC_SWAPOL)) {
|
|
tlphy_ctl |= TLAN_TC_SWAPOL;
|
|
tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
|
|
tlphy_ctl);
|
|
} else if ((tlphy_sts & TLAN_TS_POLOK) &&
|
|
(tlphy_ctl & TLAN_TC_SWAPOL)) {
|
|
tlphy_ctl &= ~TLAN_TC_SWAPOL;
|
|
tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
|
|
tlphy_ctl);
|
|
}
|
|
|
|
if (debug)
|
|
tlan_phy_print(dev);
|
|
}
|
|
}
|
|
|
|
return ack;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_handle_rx_eoc
|
|
*
|
|
* Returns:
|
|
* 1
|
|
* Parms:
|
|
* dev Device assigned the IRQ that was
|
|
* raised.
|
|
* host_int The contents of the HOST_INT
|
|
* port.
|
|
*
|
|
* This driver is structured to determine EOC occurrences by
|
|
* reading the CSTAT member of the list structure. Rx EOC
|
|
* interrupts are disabled via the DIO INTDIS register.
|
|
* However, TLAN chips before revision 3.0 didn't have this
|
|
* CSTAT member or a INTDIS register, so if this chip is
|
|
* pre-3.0, process EOC interrupts normally.
|
|
*
|
|
**************************************************************/
|
|
|
|
static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
dma_addr_t head_list_phys;
|
|
u32 ack = 1;
|
|
|
|
if (priv->tlan_rev < 0x30) {
|
|
TLAN_DBG(TLAN_DEBUG_RX,
|
|
"RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
|
|
priv->rx_head, priv->rx_tail);
|
|
head_list_phys = priv->rx_list_dma
|
|
+ sizeof(struct tlan_list)*priv->rx_head;
|
|
outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
|
|
ack |= TLAN_HC_GO | TLAN_HC_RT;
|
|
priv->rx_eoc_count++;
|
|
}
|
|
|
|
return ack;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
******************************************************************************
|
|
|
|
ThunderLAN driver timer function
|
|
|
|
******************************************************************************
|
|
*****************************************************************************/
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_timer
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* data A value given to add timer when
|
|
* add_timer was called.
|
|
*
|
|
* This function handles timed functionality for the
|
|
* TLAN driver. The two current timer uses are for
|
|
* delaying for autonegotionation and driving the ACT LED.
|
|
* - Autonegotiation requires being allowed about
|
|
* 2 1/2 seconds before attempting to transmit a
|
|
* packet. It would be a very bad thing to hang
|
|
* the kernel this long, so the driver doesn't
|
|
* allow transmission 'til after this time, for
|
|
* certain PHYs. It would be much nicer if all
|
|
* PHYs were interrupt-capable like the internal
|
|
* PHY.
|
|
* - The ACT LED, which shows adapter activity, is
|
|
* driven by the driver, and so must be left on
|
|
* for a short period to power up the LED so it
|
|
* can be seen. This delay can be changed by
|
|
* changing the TLAN_TIMER_ACT_DELAY in tlan.h,
|
|
* if desired. 100 ms produces a slightly
|
|
* sluggish response.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_timer(unsigned long data)
|
|
{
|
|
struct net_device *dev = (struct net_device *) data;
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u32 elapsed;
|
|
unsigned long flags = 0;
|
|
|
|
priv->timer.function = NULL;
|
|
|
|
switch (priv->timer_type) {
|
|
case TLAN_TIMER_PHY_PDOWN:
|
|
tlan_phy_power_down(dev);
|
|
break;
|
|
case TLAN_TIMER_PHY_PUP:
|
|
tlan_phy_power_up(dev);
|
|
break;
|
|
case TLAN_TIMER_PHY_RESET:
|
|
tlan_phy_reset(dev);
|
|
break;
|
|
case TLAN_TIMER_PHY_START_LINK:
|
|
tlan_phy_start_link(dev);
|
|
break;
|
|
case TLAN_TIMER_PHY_FINISH_AN:
|
|
tlan_phy_finish_auto_neg(dev);
|
|
break;
|
|
case TLAN_TIMER_FINISH_RESET:
|
|
tlan_finish_reset(dev);
|
|
break;
|
|
case TLAN_TIMER_ACTIVITY:
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
if (priv->timer.function == NULL) {
|
|
elapsed = jiffies - priv->timer_set_at;
|
|
if (elapsed >= TLAN_TIMER_ACT_DELAY) {
|
|
tlan_dio_write8(dev->base_addr,
|
|
TLAN_LED_REG, TLAN_LED_LINK);
|
|
} else {
|
|
priv->timer.function = tlan_timer;
|
|
priv->timer.expires = priv->timer_set_at
|
|
+ TLAN_TIMER_ACT_DELAY;
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
add_timer(&priv->timer);
|
|
break;
|
|
}
|
|
}
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
******************************************************************************
|
|
|
|
ThunderLAN driver adapter related routines
|
|
|
|
******************************************************************************
|
|
*****************************************************************************/
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_reset_lists
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* dev The device structure with the list
|
|
* stuctures to be reset.
|
|
*
|
|
* This routine sets the variables associated with managing
|
|
* the TLAN lists to their initial values.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_reset_lists(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
int i;
|
|
struct tlan_list *list;
|
|
dma_addr_t list_phys;
|
|
struct sk_buff *skb;
|
|
|
|
priv->tx_head = 0;
|
|
priv->tx_tail = 0;
|
|
for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
|
|
list = priv->tx_list + i;
|
|
list->c_stat = TLAN_CSTAT_UNUSED;
|
|
list->buffer[0].address = 0;
|
|
list->buffer[2].count = 0;
|
|
list->buffer[2].address = 0;
|
|
list->buffer[8].address = 0;
|
|
list->buffer[9].address = 0;
|
|
}
|
|
|
|
priv->rx_head = 0;
|
|
priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
|
|
for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
|
|
list = priv->rx_list + i;
|
|
list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
|
|
list->c_stat = TLAN_CSTAT_READY;
|
|
list->frame_size = TLAN_MAX_FRAME_SIZE;
|
|
list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
|
|
skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
|
|
if (!skb)
|
|
break;
|
|
|
|
list->buffer[0].address = pci_map_single(priv->pci_dev,
|
|
skb->data,
|
|
TLAN_MAX_FRAME_SIZE,
|
|
PCI_DMA_FROMDEVICE);
|
|
tlan_store_skb(list, skb);
|
|
list->buffer[1].count = 0;
|
|
list->buffer[1].address = 0;
|
|
list->forward = list_phys + sizeof(struct tlan_list);
|
|
}
|
|
|
|
/* in case ran out of memory early, clear bits */
|
|
while (i < TLAN_NUM_RX_LISTS) {
|
|
tlan_store_skb(priv->rx_list + i, NULL);
|
|
++i;
|
|
}
|
|
list->forward = 0;
|
|
|
|
}
|
|
|
|
|
|
static void tlan_free_lists(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
int i;
|
|
struct tlan_list *list;
|
|
struct sk_buff *skb;
|
|
|
|
for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
|
|
list = priv->tx_list + i;
|
|
skb = tlan_get_skb(list);
|
|
if (skb) {
|
|
pci_unmap_single(
|
|
priv->pci_dev,
|
|
list->buffer[0].address,
|
|
max(skb->len,
|
|
(unsigned int)TLAN_MIN_FRAME_SIZE),
|
|
PCI_DMA_TODEVICE);
|
|
dev_kfree_skb_any(skb);
|
|
list->buffer[8].address = 0;
|
|
list->buffer[9].address = 0;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
|
|
list = priv->rx_list + i;
|
|
skb = tlan_get_skb(list);
|
|
if (skb) {
|
|
pci_unmap_single(priv->pci_dev,
|
|
list->buffer[0].address,
|
|
TLAN_MAX_FRAME_SIZE,
|
|
PCI_DMA_FROMDEVICE);
|
|
dev_kfree_skb_any(skb);
|
|
list->buffer[8].address = 0;
|
|
list->buffer[9].address = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_print_dio
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* io_base Base IO port of the device of
|
|
* which to print DIO registers.
|
|
*
|
|
* This function prints out all the internal (DIO)
|
|
* registers of a TLAN chip.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_print_dio(u16 io_base)
|
|
{
|
|
u32 data0, data1;
|
|
int i;
|
|
|
|
pr_info("Contents of internal registers for io base 0x%04hx\n",
|
|
io_base);
|
|
pr_info("Off. +0 +4\n");
|
|
for (i = 0; i < 0x4C; i += 8) {
|
|
data0 = tlan_dio_read32(io_base, i);
|
|
data1 = tlan_dio_read32(io_base, i + 0x4);
|
|
pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* TLan_PrintList
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* list A pointer to the struct tlan_list structure to
|
|
* be printed.
|
|
* type A string to designate type of list,
|
|
* "Rx" or "Tx".
|
|
* num The index of the list.
|
|
*
|
|
* This function prints out the contents of the list
|
|
* pointed to by the list parameter.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_print_list(struct tlan_list *list, char *type, int num)
|
|
{
|
|
int i;
|
|
|
|
pr_info("%s List %d at %p\n", type, num, list);
|
|
pr_info(" Forward = 0x%08x\n", list->forward);
|
|
pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
|
|
pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
|
|
/* for (i = 0; i < 10; i++) { */
|
|
for (i = 0; i < 2; i++) {
|
|
pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
|
|
i, list->buffer[i].count, list->buffer[i].address);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_read_and_clear_stats
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* dev Pointer to device structure of adapter
|
|
* to which to read stats.
|
|
* record Flag indicating whether to add
|
|
*
|
|
* This functions reads all the internal status registers
|
|
* of the TLAN chip, which clears them as a side effect.
|
|
* It then either adds the values to the device's status
|
|
* struct, or discards them, depending on whether record
|
|
* is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_read_and_clear_stats(struct net_device *dev, int record)
|
|
{
|
|
u32 tx_good, tx_under;
|
|
u32 rx_good, rx_over;
|
|
u32 def_tx, crc, code;
|
|
u32 multi_col, single_col;
|
|
u32 excess_col, late_col, loss;
|
|
|
|
outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
|
|
tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
|
|
tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
|
|
tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
|
|
tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
|
|
|
|
outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
|
|
rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
|
|
rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
|
|
rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
|
|
rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
|
|
|
|
outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
|
|
def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
|
|
def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
|
|
crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
|
|
code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
|
|
|
|
outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
|
|
multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
|
|
multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
|
|
single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
|
|
single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
|
|
|
|
outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
|
|
excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
|
|
late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
|
|
loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
|
|
|
|
if (record) {
|
|
dev->stats.rx_packets += rx_good;
|
|
dev->stats.rx_errors += rx_over + crc + code;
|
|
dev->stats.tx_packets += tx_good;
|
|
dev->stats.tx_errors += tx_under + loss;
|
|
dev->stats.collisions += multi_col
|
|
+ single_col + excess_col + late_col;
|
|
|
|
dev->stats.rx_over_errors += rx_over;
|
|
dev->stats.rx_crc_errors += crc;
|
|
dev->stats.rx_frame_errors += code;
|
|
|
|
dev->stats.tx_aborted_errors += tx_under;
|
|
dev->stats.tx_carrier_errors += loss;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* TLan_Reset
|
|
*
|
|
* Returns:
|
|
* 0
|
|
* Parms:
|
|
* dev Pointer to device structure of adapter
|
|
* to be reset.
|
|
*
|
|
* This function resets the adapter and it's physical
|
|
* device. See Chap. 3, pp. 9-10 of the "ThunderLAN
|
|
* Programmer's Guide" for details. The routine tries to
|
|
* implement what is detailed there, though adjustments
|
|
* have been made.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void
|
|
tlan_reset_adapter(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
int i;
|
|
u32 addr;
|
|
u32 data;
|
|
u8 data8;
|
|
|
|
priv->tlan_full_duplex = false;
|
|
priv->phy_online = 0;
|
|
netif_carrier_off(dev);
|
|
|
|
/* 1. Assert reset bit. */
|
|
|
|
data = inl(dev->base_addr + TLAN_HOST_CMD);
|
|
data |= TLAN_HC_AD_RST;
|
|
outl(data, dev->base_addr + TLAN_HOST_CMD);
|
|
|
|
udelay(1000);
|
|
|
|
/* 2. Turn off interrupts. (Probably isn't necessary) */
|
|
|
|
data = inl(dev->base_addr + TLAN_HOST_CMD);
|
|
data |= TLAN_HC_INT_OFF;
|
|
outl(data, dev->base_addr + TLAN_HOST_CMD);
|
|
|
|
/* 3. Clear AREGs and HASHs. */
|
|
|
|
for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
|
|
tlan_dio_write32(dev->base_addr, (u16) i, 0);
|
|
|
|
/* 4. Setup NetConfig register. */
|
|
|
|
data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
|
|
tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
|
|
|
|
/* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
|
|
|
|
outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
|
|
outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
|
|
|
|
/* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
|
|
|
|
outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
|
|
addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
|
|
tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
|
|
|
|
/* 7. Setup the remaining registers. */
|
|
|
|
if (priv->tlan_rev >= 0x30) {
|
|
data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
|
|
tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
|
|
}
|
|
tlan_phy_detect(dev);
|
|
data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
|
|
|
|
if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
|
|
data |= TLAN_NET_CFG_BIT;
|
|
if (priv->aui == 1) {
|
|
tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
|
|
} else if (priv->duplex == TLAN_DUPLEX_FULL) {
|
|
tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
|
|
priv->tlan_full_duplex = true;
|
|
} else {
|
|
tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
|
|
}
|
|
}
|
|
|
|
/* don't power down internal PHY if we're going to use it */
|
|
if (priv->phy_num == 0 ||
|
|
(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
|
|
data |= TLAN_NET_CFG_PHY_EN;
|
|
tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
|
|
|
|
if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
|
|
tlan_finish_reset(dev);
|
|
else
|
|
tlan_phy_power_down(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
tlan_finish_reset(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u8 data;
|
|
u32 phy;
|
|
u8 sio;
|
|
u16 status;
|
|
u16 partner;
|
|
u16 tlphy_ctl;
|
|
u16 tlphy_par;
|
|
u16 tlphy_id1, tlphy_id2;
|
|
int i;
|
|
|
|
phy = priv->phy[priv->phy_num];
|
|
|
|
data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
|
|
if (priv->tlan_full_duplex)
|
|
data |= TLAN_NET_CMD_DUPLEX;
|
|
tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
|
|
data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
|
|
if (priv->phy_num == 0)
|
|
data |= TLAN_NET_MASK_MASK7;
|
|
tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
|
|
tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
|
|
|
|
if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
|
|
(priv->aui)) {
|
|
status = MII_GS_LINK;
|
|
netdev_info(dev, "Link forced\n");
|
|
} else {
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
|
|
udelay(1000);
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
|
|
if (status & MII_GS_LINK) {
|
|
/* We only support link info on Nat.Sem. PHY's */
|
|
if ((tlphy_id1 == NAT_SEM_ID1) &&
|
|
(tlphy_id2 == NAT_SEM_ID2)) {
|
|
tlan_mii_read_reg(dev, phy, MII_AN_LPA,
|
|
&partner);
|
|
tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
|
|
&tlphy_par);
|
|
|
|
netdev_info(dev,
|
|
"Link active, %s %uMbps %s-Duplex\n",
|
|
!(tlphy_par & TLAN_PHY_AN_EN_STAT)
|
|
? "forced" : "Autonegotiation enabled,",
|
|
tlphy_par & TLAN_PHY_SPEED_100
|
|
? 100 : 10,
|
|
tlphy_par & TLAN_PHY_DUPLEX_FULL
|
|
? "Full" : "Half");
|
|
|
|
if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
|
|
netdev_info(dev, "Partner capability:");
|
|
for (i = 5; i < 10; i++)
|
|
if (partner & (1 << i))
|
|
pr_cont(" %s",
|
|
media[i-5]);
|
|
pr_cont("\n");
|
|
}
|
|
} else
|
|
netdev_info(dev, "Link active\n");
|
|
/* Enabling link beat monitoring */
|
|
priv->media_timer.function = tlan_phy_monitor;
|
|
priv->media_timer.data = (unsigned long) dev;
|
|
priv->media_timer.expires = jiffies + HZ;
|
|
add_timer(&priv->media_timer);
|
|
}
|
|
}
|
|
|
|
if (priv->phy_num == 0) {
|
|
tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
|
|
tlphy_ctl |= TLAN_TC_INTEN;
|
|
tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
|
|
sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
|
|
sio |= TLAN_NET_SIO_MINTEN;
|
|
tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
|
|
}
|
|
|
|
if (status & MII_GS_LINK) {
|
|
tlan_set_mac(dev, 0, dev->dev_addr);
|
|
priv->phy_online = 1;
|
|
outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
|
|
if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
|
|
outb((TLAN_HC_REQ_INT >> 8),
|
|
dev->base_addr + TLAN_HOST_CMD + 1);
|
|
outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
|
|
outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
|
|
tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
|
|
netif_carrier_on(dev);
|
|
} else {
|
|
netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
|
|
tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
|
|
return;
|
|
}
|
|
tlan_set_multicast_list(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_set_mac
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* dev Pointer to device structure of adapter
|
|
* on which to change the AREG.
|
|
* areg The AREG to set the address in (0 - 3).
|
|
* mac A pointer to an array of chars. Each
|
|
* element stores one byte of the address.
|
|
* IE, it isn't in ascii.
|
|
*
|
|
* This function transfers a MAC address to one of the
|
|
* TLAN AREGs (address registers). The TLAN chip locks
|
|
* the register on writing to offset 0 and unlocks the
|
|
* register after writing to offset 5. If NULL is passed
|
|
* in mac, then the AREG is filled with 0's.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
|
|
{
|
|
int i;
|
|
|
|
areg *= 6;
|
|
|
|
if (mac != NULL) {
|
|
for (i = 0; i < 6; i++)
|
|
tlan_dio_write8(dev->base_addr,
|
|
TLAN_AREG_0 + areg + i, mac[i]);
|
|
} else {
|
|
for (i = 0; i < 6; i++)
|
|
tlan_dio_write8(dev->base_addr,
|
|
TLAN_AREG_0 + areg + i, 0);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
******************************************************************************
|
|
|
|
ThunderLAN driver PHY layer routines
|
|
|
|
******************************************************************************
|
|
*****************************************************************************/
|
|
|
|
|
|
|
|
/*********************************************************************
|
|
* tlan_phy_print
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* dev A pointer to the device structure of the
|
|
* TLAN device having the PHYs to be detailed.
|
|
*
|
|
* This function prints the registers a PHY (aka transceiver).
|
|
*
|
|
********************************************************************/
|
|
|
|
static void tlan_phy_print(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u16 i, data0, data1, data2, data3, phy;
|
|
|
|
phy = priv->phy[priv->phy_num];
|
|
|
|
if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
|
|
netdev_info(dev, "Unmanaged PHY\n");
|
|
} else if (phy <= TLAN_PHY_MAX_ADDR) {
|
|
netdev_info(dev, "PHY 0x%02x\n", phy);
|
|
pr_info(" Off. +0 +1 +2 +3\n");
|
|
for (i = 0; i < 0x20; i += 4) {
|
|
tlan_mii_read_reg(dev, phy, i, &data0);
|
|
tlan_mii_read_reg(dev, phy, i + 1, &data1);
|
|
tlan_mii_read_reg(dev, phy, i + 2, &data2);
|
|
tlan_mii_read_reg(dev, phy, i + 3, &data3);
|
|
pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
|
|
i, data0, data1, data2, data3);
|
|
}
|
|
} else {
|
|
netdev_info(dev, "Invalid PHY\n");
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*********************************************************************
|
|
* tlan_phy_detect
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* dev A pointer to the device structure of the adapter
|
|
* for which the PHY needs determined.
|
|
*
|
|
* So far I've found that adapters which have external PHYs
|
|
* may also use the internal PHY for part of the functionality.
|
|
* (eg, AUI/Thinnet). This function finds out if this TLAN
|
|
* chip has an internal PHY, and then finds the first external
|
|
* PHY (starting from address 0) if it exists).
|
|
*
|
|
********************************************************************/
|
|
|
|
static void tlan_phy_detect(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u16 control;
|
|
u16 hi;
|
|
u16 lo;
|
|
u32 phy;
|
|
|
|
if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
|
|
priv->phy_num = 0xffff;
|
|
return;
|
|
}
|
|
|
|
tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
|
|
|
|
if (hi != 0xffff)
|
|
priv->phy[0] = TLAN_PHY_MAX_ADDR;
|
|
else
|
|
priv->phy[0] = TLAN_PHY_NONE;
|
|
|
|
priv->phy[1] = TLAN_PHY_NONE;
|
|
for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
|
|
if ((control != 0xffff) ||
|
|
(hi != 0xffff) || (lo != 0xffff)) {
|
|
TLAN_DBG(TLAN_DEBUG_GNRL,
|
|
"PHY found at %02x %04x %04x %04x\n",
|
|
phy, control, hi, lo);
|
|
if ((priv->phy[1] == TLAN_PHY_NONE) &&
|
|
(phy != TLAN_PHY_MAX_ADDR)) {
|
|
priv->phy[1] = phy;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (priv->phy[1] != TLAN_PHY_NONE)
|
|
priv->phy_num = 1;
|
|
else if (priv->phy[0] != TLAN_PHY_NONE)
|
|
priv->phy_num = 0;
|
|
else
|
|
netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void tlan_phy_power_down(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u16 value;
|
|
|
|
TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
|
|
value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
|
|
tlan_mii_sync(dev->base_addr);
|
|
tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
|
|
if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
|
|
/* if using internal PHY, the external PHY must be powered on */
|
|
if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
|
|
value = MII_GC_ISOLATE; /* just isolate it from MII */
|
|
tlan_mii_sync(dev->base_addr);
|
|
tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
|
|
}
|
|
|
|
/* Wait for 50 ms and powerup
|
|
* This is abitrary. It is intended to make sure the
|
|
* transceiver settles.
|
|
*/
|
|
tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void tlan_phy_power_up(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u16 value;
|
|
|
|
TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
|
|
tlan_mii_sync(dev->base_addr);
|
|
value = MII_GC_LOOPBK;
|
|
tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
|
|
tlan_mii_sync(dev->base_addr);
|
|
/* Wait for 500 ms and reset the
|
|
* transceiver. The TLAN docs say both 50 ms and
|
|
* 500 ms, so do the longer, just in case.
|
|
*/
|
|
tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void tlan_phy_reset(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u16 phy;
|
|
u16 value;
|
|
unsigned long timeout = jiffies + HZ;
|
|
|
|
phy = priv->phy[priv->phy_num];
|
|
|
|
TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
|
|
tlan_mii_sync(dev->base_addr);
|
|
value = MII_GC_LOOPBK | MII_GC_RESET;
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
|
|
do {
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
|
|
if (time_after(jiffies, timeout)) {
|
|
netdev_err(dev, "PHY reset timeout\n");
|
|
return;
|
|
}
|
|
} while (value & MII_GC_RESET);
|
|
|
|
/* Wait for 500 ms and initialize.
|
|
* I don't remember why I wait this long.
|
|
* I've changed this to 50ms, as it seems long enough.
|
|
*/
|
|
tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void tlan_phy_start_link(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u16 ability;
|
|
u16 control;
|
|
u16 data;
|
|
u16 phy;
|
|
u16 status;
|
|
u16 tctl;
|
|
|
|
phy = priv->phy[priv->phy_num];
|
|
TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
|
|
|
|
if ((status & MII_GS_AUTONEG) &&
|
|
(!priv->aui)) {
|
|
ability = status >> 11;
|
|
if (priv->speed == TLAN_SPEED_10 &&
|
|
priv->duplex == TLAN_DUPLEX_HALF) {
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
|
|
} else if (priv->speed == TLAN_SPEED_10 &&
|
|
priv->duplex == TLAN_DUPLEX_FULL) {
|
|
priv->tlan_full_duplex = true;
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
|
|
} else if (priv->speed == TLAN_SPEED_100 &&
|
|
priv->duplex == TLAN_DUPLEX_HALF) {
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
|
|
} else if (priv->speed == TLAN_SPEED_100 &&
|
|
priv->duplex == TLAN_DUPLEX_FULL) {
|
|
priv->tlan_full_duplex = true;
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
|
|
} else {
|
|
|
|
/* Set Auto-Neg advertisement */
|
|
tlan_mii_write_reg(dev, phy, MII_AN_ADV,
|
|
(ability << 5) | 1);
|
|
/* Enablee Auto-Neg */
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
|
|
/* Restart Auto-Neg */
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
|
|
/* Wait for 4 sec for autonegotiation
|
|
* to complete. The max spec time is less than this
|
|
* but the card need additional time to start AN.
|
|
* .5 sec should be plenty extra.
|
|
*/
|
|
netdev_info(dev, "Starting autonegotiation\n");
|
|
tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
|
|
return;
|
|
}
|
|
|
|
}
|
|
|
|
if ((priv->aui) && (priv->phy_num != 0)) {
|
|
priv->phy_num = 0;
|
|
data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
|
|
| TLAN_NET_CFG_PHY_EN;
|
|
tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
|
|
tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
|
|
return;
|
|
} else if (priv->phy_num == 0) {
|
|
control = 0;
|
|
tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
|
|
if (priv->aui) {
|
|
tctl |= TLAN_TC_AUISEL;
|
|
} else {
|
|
tctl &= ~TLAN_TC_AUISEL;
|
|
if (priv->duplex == TLAN_DUPLEX_FULL) {
|
|
control |= MII_GC_DUPLEX;
|
|
priv->tlan_full_duplex = true;
|
|
}
|
|
if (priv->speed == TLAN_SPEED_100)
|
|
control |= MII_GC_SPEEDSEL;
|
|
}
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
|
|
tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
|
|
}
|
|
|
|
/* Wait for 2 sec to give the transceiver time
|
|
* to establish link.
|
|
*/
|
|
tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void tlan_phy_finish_auto_neg(struct net_device *dev)
|
|
{
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u16 an_adv;
|
|
u16 an_lpa;
|
|
u16 mode;
|
|
u16 phy;
|
|
u16 status;
|
|
|
|
phy = priv->phy[priv->phy_num];
|
|
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
|
|
udelay(1000);
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
|
|
|
|
if (!(status & MII_GS_AUTOCMPLT)) {
|
|
/* Wait for 8 sec to give the process
|
|
* more time. Perhaps we should fail after a while.
|
|
*/
|
|
tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
|
|
return;
|
|
}
|
|
|
|
netdev_info(dev, "Autonegotiation complete\n");
|
|
tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
|
|
tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
|
|
mode = an_adv & an_lpa & 0x03E0;
|
|
if (mode & 0x0100)
|
|
priv->tlan_full_duplex = true;
|
|
else if (!(mode & 0x0080) && (mode & 0x0040))
|
|
priv->tlan_full_duplex = true;
|
|
|
|
/* switch to internal PHY for 10 Mbps */
|
|
if ((!(mode & 0x0180)) &&
|
|
(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
|
|
(priv->phy_num != 0)) {
|
|
priv->phy_num = 0;
|
|
tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
|
|
return;
|
|
}
|
|
|
|
if (priv->phy_num == 0) {
|
|
if ((priv->duplex == TLAN_DUPLEX_FULL) ||
|
|
(an_adv & an_lpa & 0x0040)) {
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
|
|
MII_GC_AUTOENB | MII_GC_DUPLEX);
|
|
netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
|
|
} else {
|
|
tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
|
|
MII_GC_AUTOENB);
|
|
netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
|
|
}
|
|
}
|
|
|
|
/* Wait for 100 ms. No reason in partiticular.
|
|
*/
|
|
tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
|
|
|
|
}
|
|
|
|
|
|
/*********************************************************************
|
|
*
|
|
* tlan_phy_monitor
|
|
*
|
|
* Returns:
|
|
* None
|
|
*
|
|
* Params:
|
|
* data The device structure of this device.
|
|
*
|
|
*
|
|
* This function monitors PHY condition by reading the status
|
|
* register via the MII bus, controls LINK LED and notifies the
|
|
* kernel about link state.
|
|
*
|
|
*******************************************************************/
|
|
|
|
static void tlan_phy_monitor(unsigned long data)
|
|
{
|
|
struct net_device *dev = (struct net_device *) data;
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
u16 phy;
|
|
u16 phy_status;
|
|
|
|
phy = priv->phy[priv->phy_num];
|
|
|
|
/* Get PHY status register */
|
|
tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
|
|
|
|
/* Check if link has been lost */
|
|
if (!(phy_status & MII_GS_LINK)) {
|
|
if (netif_carrier_ok(dev)) {
|
|
printk(KERN_DEBUG "TLAN: %s has lost link\n",
|
|
dev->name);
|
|
tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
|
|
netif_carrier_off(dev);
|
|
if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
|
|
/* power down internal PHY */
|
|
u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
|
|
MII_GC_ISOLATE;
|
|
|
|
tlan_mii_sync(dev->base_addr);
|
|
tlan_mii_write_reg(dev, priv->phy[0],
|
|
MII_GEN_CTL, data);
|
|
/* set to external PHY */
|
|
priv->phy_num = 1;
|
|
/* restart autonegotiation */
|
|
tlan_set_timer(dev, msecs_to_jiffies(400),
|
|
TLAN_TIMER_PHY_PDOWN);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Link restablished? */
|
|
if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
|
|
tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
|
|
printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
|
|
dev->name);
|
|
netif_carrier_on(dev);
|
|
}
|
|
priv->media_timer.expires = jiffies + HZ;
|
|
add_timer(&priv->media_timer);
|
|
}
|
|
|
|
|
|
/*****************************************************************************
|
|
******************************************************************************
|
|
|
|
ThunderLAN driver MII routines
|
|
|
|
these routines are based on the information in chap. 2 of the
|
|
"ThunderLAN Programmer's Guide", pp. 15-24.
|
|
|
|
******************************************************************************
|
|
*****************************************************************************/
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_mii_read_reg
|
|
*
|
|
* Returns:
|
|
* false if ack received ok
|
|
* true if no ack received or other error
|
|
*
|
|
* Parms:
|
|
* dev The device structure containing
|
|
* The io address and interrupt count
|
|
* for this device.
|
|
* phy The address of the PHY to be queried.
|
|
* reg The register whose contents are to be
|
|
* retrieved.
|
|
* val A pointer to a variable to store the
|
|
* retrieved value.
|
|
*
|
|
* This function uses the TLAN's MII bus to retrieve the contents
|
|
* of a given register on a PHY. It sends the appropriate info
|
|
* and then reads the 16-bit register value from the MII bus via
|
|
* the TLAN SIO register.
|
|
*
|
|
**************************************************************/
|
|
|
|
static bool
|
|
tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
|
|
{
|
|
u8 nack;
|
|
u16 sio, tmp;
|
|
u32 i;
|
|
bool err;
|
|
int minten;
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
unsigned long flags = 0;
|
|
|
|
err = false;
|
|
outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
|
|
sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
|
|
|
|
if (!in_irq())
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
tlan_mii_sync(dev->base_addr);
|
|
|
|
minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
|
|
if (minten)
|
|
tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
|
|
|
|
tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
|
|
tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
|
|
tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
|
|
tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
|
|
|
|
|
|
tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
|
|
|
|
tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
|
|
tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
|
|
tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
|
|
|
|
nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
|
|
tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
|
|
if (nack) { /* no ACK, so fake it */
|
|
for (i = 0; i < 16; i++) {
|
|
tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
|
|
}
|
|
tmp = 0xffff;
|
|
err = true;
|
|
} else { /* ACK, so read data */
|
|
for (tmp = 0, i = 0x8000; i; i >>= 1) {
|
|
tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
|
|
if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
|
|
tmp |= i;
|
|
tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
|
|
}
|
|
}
|
|
|
|
|
|
tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
|
|
tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
|
|
|
|
if (minten)
|
|
tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
|
|
|
|
*val = tmp;
|
|
|
|
if (!in_irq())
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_mii_send_data
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* base_port The base IO port of the adapter in
|
|
* question.
|
|
* dev The address of the PHY to be queried.
|
|
* data The value to be placed on the MII bus.
|
|
* num_bits The number of bits in data that are to
|
|
* be placed on the MII bus.
|
|
*
|
|
* This function sends on sequence of bits on the MII
|
|
* configuration bus.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
|
|
{
|
|
u16 sio;
|
|
u32 i;
|
|
|
|
if (num_bits == 0)
|
|
return;
|
|
|
|
outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
|
|
sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
|
|
tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
|
|
|
|
for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
|
|
tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
|
|
(void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
|
|
if (data & i)
|
|
tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
|
|
else
|
|
tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
|
|
(void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* TLan_MiiSync
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* base_port The base IO port of the adapter in
|
|
* question.
|
|
*
|
|
* This functions syncs all PHYs in terms of the MII configuration
|
|
* bus.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_mii_sync(u16 base_port)
|
|
{
|
|
int i;
|
|
u16 sio;
|
|
|
|
outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
|
|
sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
|
|
|
|
tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
|
|
for (i = 0; i < 32; i++) {
|
|
tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_mii_write_reg
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* dev The device structure for the device
|
|
* to write to.
|
|
* phy The address of the PHY to be written to.
|
|
* reg The register whose contents are to be
|
|
* written.
|
|
* val The value to be written to the register.
|
|
*
|
|
* This function uses the TLAN's MII bus to write the contents of a
|
|
* given register on a PHY. It sends the appropriate info and then
|
|
* writes the 16-bit register value from the MII configuration bus
|
|
* via the TLAN SIO register.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void
|
|
tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
|
|
{
|
|
u16 sio;
|
|
int minten;
|
|
unsigned long flags = 0;
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
|
|
outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
|
|
sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
|
|
|
|
if (!in_irq())
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
tlan_mii_sync(dev->base_addr);
|
|
|
|
minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
|
|
if (minten)
|
|
tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
|
|
|
|
tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
|
|
tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
|
|
tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
|
|
tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
|
|
|
|
tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
|
|
tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
|
|
|
|
tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
|
|
tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
|
|
|
|
if (minten)
|
|
tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
|
|
|
|
if (!in_irq())
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*****************************************************************************
|
|
******************************************************************************
|
|
|
|
ThunderLAN driver eeprom routines
|
|
|
|
the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
|
|
EEPROM. these functions are based on information in microchip's
|
|
data sheet. I don't know how well this functions will work with
|
|
other Eeproms.
|
|
|
|
******************************************************************************
|
|
*****************************************************************************/
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_ee_send_start
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* io_base The IO port base address for the
|
|
* TLAN device with the EEPROM to
|
|
* use.
|
|
*
|
|
* This function sends a start cycle to an EEPROM attached
|
|
* to a TLAN chip.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_ee_send_start(u16 io_base)
|
|
{
|
|
u16 sio;
|
|
|
|
outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
|
|
sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
|
|
|
|
tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
|
|
tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
|
|
tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_ee_send_byte
|
|
*
|
|
* Returns:
|
|
* If the correct ack was received, 0, otherwise 1
|
|
* Parms: io_base The IO port base address for the
|
|
* TLAN device with the EEPROM to
|
|
* use.
|
|
* data The 8 bits of information to
|
|
* send to the EEPROM.
|
|
* stop If TLAN_EEPROM_STOP is passed, a
|
|
* stop cycle is sent after the
|
|
* byte is sent after the ack is
|
|
* read.
|
|
*
|
|
* This function sends a byte on the serial EEPROM line,
|
|
* driving the clock to send each bit. The function then
|
|
* reverses transmission direction and reads an acknowledge
|
|
* bit.
|
|
*
|
|
**************************************************************/
|
|
|
|
static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
|
|
{
|
|
int err;
|
|
u8 place;
|
|
u16 sio;
|
|
|
|
outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
|
|
sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
|
|
|
|
/* Assume clock is low, tx is enabled; */
|
|
for (place = 0x80; place != 0; place >>= 1) {
|
|
if (place & data)
|
|
tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
|
|
else
|
|
tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
}
|
|
tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
|
|
tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
|
|
|
|
if ((!err) && stop) {
|
|
/* STOP, raise data while clock is high */
|
|
tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
|
|
}
|
|
|
|
return err;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_ee_receive_byte
|
|
*
|
|
* Returns:
|
|
* Nothing
|
|
* Parms:
|
|
* io_base The IO port base address for the
|
|
* TLAN device with the EEPROM to
|
|
* use.
|
|
* data An address to a char to hold the
|
|
* data sent from the EEPROM.
|
|
* stop If TLAN_EEPROM_STOP is passed, a
|
|
* stop cycle is sent after the
|
|
* byte is received, and no ack is
|
|
* sent.
|
|
*
|
|
* This function receives 8 bits of data from the EEPROM
|
|
* over the serial link. It then sends and ack bit, or no
|
|
* ack and a stop bit. This function is used to retrieve
|
|
* data after the address of a byte in the EEPROM has been
|
|
* sent.
|
|
*
|
|
**************************************************************/
|
|
|
|
static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
|
|
{
|
|
u8 place;
|
|
u16 sio;
|
|
|
|
outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
|
|
sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
|
|
*data = 0;
|
|
|
|
/* Assume clock is low, tx is enabled; */
|
|
tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
|
|
for (place = 0x80; place; place >>= 1) {
|
|
tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
|
|
*data |= place;
|
|
tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
}
|
|
|
|
tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
|
|
if (!stop) {
|
|
tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
|
|
tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
} else {
|
|
tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
|
|
tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
/* STOP, raise data while clock is high */
|
|
tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
|
|
tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/***************************************************************
|
|
* tlan_ee_read_byte
|
|
*
|
|
* Returns:
|
|
* No error = 0, else, the stage at which the error
|
|
* occurred.
|
|
* Parms:
|
|
* io_base The IO port base address for the
|
|
* TLAN device with the EEPROM to
|
|
* use.
|
|
* ee_addr The address of the byte in the
|
|
* EEPROM whose contents are to be
|
|
* retrieved.
|
|
* data An address to a char to hold the
|
|
* data obtained from the EEPROM.
|
|
*
|
|
* This function reads a byte of information from an byte
|
|
* cell in the EEPROM.
|
|
*
|
|
**************************************************************/
|
|
|
|
static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
|
|
{
|
|
int err;
|
|
struct tlan_priv *priv = netdev_priv(dev);
|
|
unsigned long flags = 0;
|
|
int ret = 0;
|
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
tlan_ee_send_start(dev->base_addr);
|
|
err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
|
|
if (err) {
|
|
ret = 1;
|
|
goto fail;
|
|
}
|
|
err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
|
|
if (err) {
|
|
ret = 2;
|
|
goto fail;
|
|
}
|
|
tlan_ee_send_start(dev->base_addr);
|
|
err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
|
|
if (err) {
|
|
ret = 3;
|
|
goto fail;
|
|
}
|
|
tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
|
|
fail:
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|