elphel: os/linux-2.6-tag--devboard-R2_10-4/drivers/net/cris/eth

00001 /*
00002  * Definitions for ETRAX FS ethernet driver.
00003  *
00004  * Copyright (C) 2003, 2004, 2005 Axis Communications.
00005  */
00006 
00007 #ifndef _ETRAX_ETHERNET_H_
00008 #define _ETRAX_ETHERNET_H_
00009 
00010 #include <asm/arch/hwregs/dma.h>
00011 
00012 
00013 #define MAX_MEDIA_DATA_SIZE 1522        /* Max packet size. */
00014 
00015 #define NBR_RX_DESC 64                  /* Number of RX descriptors. */
00016 #define NBR_TX_DESC 32                  /* Number of TX descriptors. */
00017 #ifdef CONFIG_CRIS_MACH_ARTPEC3
00018 #define NBR_INTMEM_RX_DESC 16           /* Number of RX descriptors in int. mem.
00019                                          * when running in gigabit mode.
00020                                          * Should be less then NBR_RX_DESC 
00021                                          */
00022 #define NBR_INTMEM_TX_BUF 4             /* Number of TX buffers in int. mem
00023                                          * when running in gigabit mode.
00024                                          * Should be less than NBR_TX_DESC
00025                                          */
00026 #endif
00027 
00028 /* Large packets are sent directly to upper layers while small packets
00029  * are copied (to reduce memory waste).  The following constant
00030  * decides the breakpoint.
00031  */
00032 #define RX_COPYBREAK        (256)
00033 
00034 #define ETHER_HEAD_LEN      (14)
00035 
00036 /* 
00037 ** MDIO constants.
00038 */
00039 #define MDIO_START                          0x1
00040 #define MDIO_READ                           0x2
00041 #define MDIO_WRITE                          0x1
00042 #define MDIO_PREAMBLE              0xfffffffful
00043 
00044 /* Broadcom specific */
00045 #define MDIO_AUX_CTRL_STATUS_REG           0x18
00046 #define MDIO_BC_FULL_DUPLEX_IND             0x1
00047 #define MDIO_BC_SPEED                       0x2
00048 
00049 /* TDK specific */
00050 #define MDIO_TDK_DIAGNOSTIC_REG              18
00051 #define MDIO_TDK_DIAGNOSTIC_RATE          0x400
00052 #define MDIO_TDK_DIAGNOSTIC_DPLX          0x800
00053 
00054 /*Intel LXT972A specific*/
00055 #define MDIO_INT_STATUS_REG_2              0x0011
00056 #define MDIO_INT_FULL_DUPLEX_IND ( 0x0001 << 9  )
00057 #define MDIO_INT_SPEED           ( 0x0001 << 14 )
00058 
00059 /*National Semiconductor DP83865 specific*/
00060 #define MDIO_NAT_LINK_AN_REG              0x11
00061 #define MDIO_NAT_1000            (0x0001 << 4)
00062 #define MDIO_NAT_100             (0x0001 << 3)
00063 #define MDIO_NAT_FULL_DUPLEX_IND (0x0001 << 1)
00064 
00065 /* Vitesse VCS8641 specific */
00066 #define MDIO_VIT_AUX_STAT 0x1c
00067 #define MDIO_VIT_1000            (0x2 << 3)
00068 #define MDIO_VIT_100             (0x1 << 3)
00069 #define MDIO_VIT_10              0
00070 #define MDIO_VIT_FD              (0x1 << 5)
00071 
00072 /* Network flash constants */
00073 #define NET_FLASH_TIME                  (HZ/50) /* 20 ms */
00074 #define NET_FLASH_PAUSE                 (HZ/100) /* 10 ms */
00075 #define NET_LINK_UP_CHECK_INTERVAL      (2*HZ)  /* 2 seconds. */
00076 #define NET_DUPLEX_CHECK_INTERVAL       (2*HZ)  /* 2 seconds. */
00077 
00078 /* Duplex settings. */
00079 enum duplex {
00080         half,
00081         full,
00082         autoneg
00083 };
00084 
00085 /* Some transceivers requires special handling. */
00086 struct transceiver_ops {
00087         unsigned int oui;
00088         void (*check_speed) (struct net_device * dev);
00089         void (*check_duplex) (struct net_device * dev);
00090 };
00091 
00092 typedef struct crisv32_eth_descr {
00093         dma_descr_data descr __attribute__ ((__aligned__(32)));
00094         struct sk_buff *skb;
00095         unsigned char *linearized_packet;
00096 } crisv32_eth_descr;
00097 
00098 
00099 
00100 #ifdef CONFIG_CRIS_MACH_ARTPEC3
00101 struct tx_buffer_list {
00102   struct tx_buffer_list *next;
00103   unsigned char *buf;
00104   char free;
00105 };
00106 #endif
00107 
00108 /* LED stuff */
00109 #define LED_GRP_0 0
00110 #define LED_GRP_1 1
00111 #define LED_GRP_NONE 2
00112 
00113 #define LED_ACTIVITY   0
00114 #define LED_NOACTIVITY 1
00115 #define LED_LINK       2
00116 #define LED_NOLINK     3
00117 
00118 struct crisv32_eth_leds {
00119         unsigned int ledgrp;
00120         int led_active;
00121         unsigned long led_next_time;
00122         struct timer_list clear_led_timer;
00123         spinlock_t led_lock; /* Protect LED state */
00124         int ifisup[2];
00125 };
00126 
00127 #define NET_LED_SET(x,y)                                \
00128         do {                                            \
00129                 if (x == 0) LED_NETWORK_GRP0_SET(y);    \
00130                 if (x == 1) LED_NETWORK_GRP1_SET(y);    \
00131         } while (0)
00132 
00133 /* Information that need to be kept for each device. */
00134 struct crisv32_ethernet_local {
00135         dma_descr_context ctxt_in __attribute__ ((__aligned__(32)));
00136         dma_descr_context ctxt_out __attribute__ ((__aligned__(32)));
00137 
00138         crisv32_eth_descr *active_rx_desc;
00139         crisv32_eth_descr *prev_rx_desc;
00140         crisv32_eth_descr *last_rx_desc;
00141 
00142         crisv32_eth_descr *active_tx_desc;
00143         crisv32_eth_descr *prev_tx_desc;
00144         crisv32_eth_descr *catch_tx_desc;
00145 
00146         crisv32_eth_descr dma_rx_descr_list[NBR_RX_DESC];
00147         crisv32_eth_descr dma_tx_descr_list[NBR_TX_DESC];
00148 #ifdef CONFIG_CRIS_MACH_ARTPEC3
00149         struct tx_buffer_list tx_intmem_buf_list[NBR_INTMEM_TX_BUF];
00150         struct tx_buffer_list *intmem_tx_buf_active;
00151         struct tx_buffer_list *intmem_tx_buf_catch;
00152         char gigabit_mode;
00153 #endif
00154         char new_rx_package;
00155 
00156         /* DMA and ethernet registers for the device. */
00157         int eth_inst;
00158         int dma_in_inst;
00159         int dma_out_inst;
00160 
00161         /* Network speed indication. */
00162         struct timer_list speed_timer;
00163         int current_speed;              /* Speed read from tranceiver */
00164         int current_speed_selection;    /* Speed selected by user */
00165         int sender_started;
00166         int txpackets;
00167 
00168         struct crisv32_eth_leds *leds;
00169 
00170         /* Duplex. */
00171         struct timer_list duplex_timer;
00172         int full_duplex;
00173         enum duplex current_duplex;
00174 
00175         struct net_device_stats stats;
00176 
00177         /* Transciever address. */
00178         unsigned int mdio_phy_addr;
00179 
00180         struct transceiver_ops *transceiver;
00181         unsigned long newbuf;
00182         /* 
00183          * TX control lock. This protects the transmit buffer ring state along
00184          * with the "tx full" state of the driver.  This means all netif_queue
00185          * flow control actions are protected by this lock as well.
00186          */
00187         spinlock_t lock;
00188         spinlock_t transceiver_lock; /* Protect transceiver state. */
00189 };
00190 
00191 /* Function prototypes. */
00192 static int crisv32_ethernet_init(void);
00193 static int crisv32_ethernet_device_init(struct net_device* dev);
00194 static int crisv32_eth_open(struct net_device *dev);
00195 static int crisv32_eth_poll(struct net_device *dev, int *budget);
00196 static int crisv32_eth_close(struct net_device *dev);
00197 static int crisv32_eth_set_mac_address(struct net_device *dev, void *vpntr);
00198 static irqreturn_t crisv32rx_eth_interrupt(int irq, void *dev_id);
00199 static irqreturn_t crisv32tx_eth_interrupt(int irq, void *dev_id);
00200 static irqreturn_t crisv32nw_eth_interrupt(int irq, void *dev_id);
00201 static void crisv32_eth_receive_packet(struct net_device *dev);
00202 static int crisv32_eth_send_packet(struct sk_buff *skb, struct net_device *dev);
00203 static void crisv32_eth_hw_send_packet(unsigned char *buf, int length,
00204                                        void *priv);
00205 static void crisv32_eth_tx_timeout(struct net_device *dev);
00206 static void crisv32_eth_set_multicast_list(struct net_device *dev);
00207 static int crisv32_eth_ioctl(struct net_device *dev, struct ifreq *ifr,
00208                              int cmd);
00209 static int crisv32_eth_set_config(struct net_device* dev, struct ifmap* map);
00210 #ifdef CONFIG_CRIS_MACH_ARTPEC3
00211 static void crisv32_eth_switch_intmem_usage(struct net_device *dev);
00212 #endif
00213 static void crisv32_eth_negotiate(struct net_device *dev);
00214 static void crisv32_eth_check_speed(unsigned long idev);
00215 static void crisv32_eth_set_speed(struct net_device *dev, unsigned long speed);
00216 static void crisv32_eth_check_duplex(unsigned long idev);
00217 static void crisv32_eth_set_duplex(struct net_device *dev, enum duplex);
00218 static int crisv32_eth_probe_transceiver(struct net_device *dev);
00219 
00220 static struct ethtool_ops crisv32_ethtool_ops;
00221 
00222 static void generic_check_speed(struct net_device *dev);
00223 static void generic_check_duplex(struct net_device *dev);
00224 static void broadcom_check_speed(struct net_device *dev);
00225 static void broadcom_check_duplex(struct net_device *dev);
00226 static void tdk_check_speed(struct net_device *dev);
00227 static void tdk_check_duplex(struct net_device *dev);
00228 static void intel_check_speed(struct net_device* dev);
00229 static void intel_check_duplex(struct net_device *dev);
00230 static void national_check_speed(struct net_device* dev);
00231 static void national_check_duplex(struct net_device *dev);
00232 static void vitesse_check_speed(struct net_device* dev);
00233 static void vitesse_check_duplex(struct net_device *dev);
00234 
00235 #ifdef CONFIG_NET_POLL_CONTROLLER
00236 static void crisv32_netpoll(struct net_device* dev);
00237 #endif
00238 
00239 static void crisv32_clear_network_leds(unsigned long dummy);
00240 static void crisv32_set_network_leds(int active, struct net_device* dev);
00241 
00242 static void crisv32_eth_reset_tranceiver(struct net_device *dev);
00243 static unsigned short crisv32_eth_get_mdio_reg(struct net_device *dev,
00244                                                unsigned char reg_num);
00245 static void crisv32_eth_set_mdio_reg(struct net_device *dev,
00246                                      unsigned char reg_num,
00247                                      int val);
00248 static void crisv32_eth_send_mdio_cmd(struct net_device *dev,
00249                                       unsigned short cmd, int write_cmd);
00250 static void crisv32_eth_send_mdio_bit(struct net_device *dev,
00251                                       unsigned char bit);
00252 static unsigned char crisv32_eth_receive_mdio_bit(struct net_device *dev);
00253 
00254 static struct net_device_stats *crisv32_get_stats(struct net_device *dev);
00255 static void crisv32_start_dma_out(struct crisv32_ethernet_local* np);
00256 
00257 
00258 #endif /* _ETRAX_ETHERNET_H_ */
os/linux-2.6-tag--devboard-R2_10-4/drivers/net/cris/eth_v32.h
