tulip.h
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- /*
- drivers/net/tulip/tulip.h
- Copyright 2000,2001 The Linux Kernel Team
- Written/copyright 1994-2001 by Donald Becker.
- This software may be used and distributed according to the terms
- of the GNU General Public License, incorporated herein by reference.
- Please refer to Documentation/DocBook/tulip.{pdf,ps,html}
- for more information on this driver, or visit the project
- Web page at http://sourceforge.net/projects/tulip/
- */
- #ifndef __NET_TULIP_H__
- #define __NET_TULIP_H__
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/types.h>
- #include <linux/spinlock.h>
- #include <linux/netdevice.h>
- #include <linux/timer.h>
- #include <linux/delay.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- /* undefine, or define to various debugging levels (>4 == obscene levels) */
- #define TULIP_DEBUG 1
- /* undefine USE_IO_OPS for MMIO, define for PIO */
- #ifdef CONFIG_TULIP_MMIO
- # undef USE_IO_OPS
- #else
- # define USE_IO_OPS 1
- #endif
- struct tulip_chip_table {
- char *chip_name;
- int io_size;
- int valid_intrs; /* CSR7 interrupt enable settings */
- int flags;
- void (*media_timer) (unsigned long data);
- };
- enum tbl_flag {
- HAS_MII = 0x0001,
- HAS_MEDIA_TABLE = 0x0002,
- CSR12_IN_SROM = 0x0004,
- ALWAYS_CHECK_MII = 0x0008,
- HAS_ACPI = 0x0010,
- MC_HASH_ONLY = 0x0020, /* Hash-only multicast filter. */
- HAS_PNICNWAY = 0x0080,
- HAS_NWAY = 0x0040, /* Uses internal NWay xcvr. */
- HAS_INTR_MITIGATION = 0x0100,
- IS_ASIX = 0x0200,
- HAS_8023X = 0x0400,
- COMET_MAC_ADDR = 0x0800,
- HAS_PCI_MWI = 0x1000,
- HAS_PHY_IRQ = 0x2000,
- };
- /* chip types. careful! order is VERY IMPORTANT here, as these
- * are used throughout the driver as indices into arrays */
- /* Note 21142 == 21143. */
- enum chips {
- DC21040 = 0,
- DC21041 = 1,
- DC21140 = 2,
- DC21142 = 3, DC21143 = 3,
- LC82C168,
- MX98713,
- MX98715,
- MX98725,
- AX88140,
- PNIC2,
- COMET,
- COMPEX9881,
- I21145,
- DM910X,
- CONEXANT,
- };
- enum MediaIs {
- MediaIsFD = 1,
- MediaAlwaysFD = 2,
- MediaIsMII = 4,
- MediaIsFx = 8,
- MediaIs100 = 16
- };
- /* Offsets to the Command and Status Registers, "CSRs". All accesses
- must be longword instructions and quadword aligned. */
- enum tulip_offsets {
- CSR0 = 0,
- CSR1 = 0x08,
- CSR2 = 0x10,
- CSR3 = 0x18,
- CSR4 = 0x20,
- CSR5 = 0x28,
- CSR6 = 0x30,
- CSR7 = 0x38,
- CSR8 = 0x40,
- CSR9 = 0x48,
- CSR10 = 0x50,
- CSR11 = 0x58,
- CSR12 = 0x60,
- CSR13 = 0x68,
- CSR14 = 0x70,
- CSR15 = 0x78,
- };
- /* register offset and bits for CFDD PCI config reg */
- enum pci_cfg_driver_reg {
- CFDD = 0x40,
- CFDD_Sleep = (1 << 31),
- CFDD_Snooze = (1 << 30),
- };
- /* The bits in the CSR5 status registers, mostly interrupt sources. */
- enum status_bits {
- TimerInt = 0x800,
- SytemError = 0x2000,
- TPLnkFail = 0x1000,
- TPLnkPass = 0x10,
- NormalIntr = 0x10000,
- AbnormalIntr = 0x8000,
- RxJabber = 0x200,
- RxDied = 0x100,
- RxNoBuf = 0x80,
- RxIntr = 0x40,
- TxFIFOUnderflow = 0x20,
- TxJabber = 0x08,
- TxNoBuf = 0x04,
- TxDied = 0x02,
- TxIntr = 0x01,
- };
- enum tulip_mode_bits {
- TxThreshold = (1 << 22),
- FullDuplex = (1 << 9),
- TxOn = 0x2000,
- AcceptBroadcast = 0x0100,
- AcceptAllMulticast = 0x0080,
- AcceptAllPhys = 0x0040,
- AcceptRunt = 0x0008,
- RxOn = 0x0002,
- RxTx = (TxOn | RxOn),
- };
- enum tulip_busconfig_bits {
- MWI = (1 << 24),
- MRL = (1 << 23),
- MRM = (1 << 21),
- CALShift = 14,
- BurstLenShift = 8,
- };
- /* The Tulip Rx and Tx buffer descriptors. */
- struct tulip_rx_desc {
- s32 status;
- s32 length;
- u32 buffer1;
- u32 buffer2;
- };
- struct tulip_tx_desc {
- s32 status;
- s32 length;
- u32 buffer1;
- u32 buffer2; /* We use only buffer 1. */
- };
- enum desc_status_bits {
- DescOwned = 0x80000000,
- RxDescFatalErr = 0x8000,
- RxWholePkt = 0x0300,
- };
- enum t21041_csr13_bits {
- csr13_eng = (0xEF0<<4), /* for eng. purposes only, hardcode at EF0h */
- csr13_aui = (1<<3), /* clear to force 10bT, set to force AUI/BNC */
- csr13_cac = (1<<2), /* CSR13/14/15 autoconfiguration */
- csr13_srl = (1<<0), /* When reset, resets all SIA functions, machines */
- csr13_mask_auibnc = (csr13_eng | csr13_aui | csr13_srl),
- csr13_mask_10bt = (csr13_eng | csr13_srl),
- };
- enum t21143_csr6_bits {
- csr6_sc = (1<<31),
- csr6_ra = (1<<30),
- csr6_ign_dest_msb = (1<<26),
- csr6_mbo = (1<<25),
- csr6_scr = (1<<24), /* scramble mode flag: can't be set */
- csr6_pcs = (1<<23), /* Enables PCS functions (symbol mode requires csr6_ps be set) default is set */
- csr6_ttm = (1<<22), /* Transmit Threshold Mode, set for 10baseT, 0 for 100BaseTX */
- csr6_sf = (1<<21), /* Store and forward. If set ignores TR bits */
- csr6_hbd = (1<<19), /* Heart beat disable. Disables SQE function in 10baseT */
- csr6_ps = (1<<18), /* Port Select. 0 (defualt) = 10baseT, 1 = 100baseTX: can't be set */
- csr6_ca = (1<<17), /* Collision Offset Enable. If set uses special algorithm in low collision situations */
- csr6_trh = (1<<15), /* Transmit Threshold high bit */
- csr6_trl = (1<<14), /* Transmit Threshold low bit */
- /***************************************************************
- * This table shows transmit threshold values based on media *
- * and these two registers (from PNIC1 & 2 docs) Note: this is *
- * all meaningless if sf is set. *
- ***************************************************************/
- /***********************************
- * (trh,trl) * 100BaseTX * 10BaseT *
- ***********************************
- * (0,0) * 128 * 72 *
- * (0,1) * 256 * 96 *
- * (1,0) * 512 * 128 *
- * (1,1) * 1024 * 160 *
- ***********************************/
- csr6_fc = (1<<12), /* Forces a collision in next transmission (for testing in loopback mode) */
- csr6_om_int_loop = (1<<10), /* internal (FIFO) loopback flag */
- csr6_om_ext_loop = (1<<11), /* external (PMD) loopback flag */
- /* set both and you get (PHY) loopback */
- csr6_fd = (1<<9), /* Full duplex mode, disables hearbeat, no loopback */
- csr6_pm = (1<<7), /* Pass All Multicast */
- csr6_pr = (1<<6), /* Promiscuous mode */
- csr6_sb = (1<<5), /* Start(1)/Stop(0) backoff counter */
- csr6_if = (1<<4), /* Inverse Filtering, rejects only addresses in address table: can't be set */
- csr6_pb = (1<<3), /* Pass Bad Frames, (1) causes even bad frames to be passed on */
- csr6_ho = (1<<2), /* Hash-only filtering mode: can't be set */
- csr6_hp = (1<<0), /* Hash/Perfect Receive Filtering Mode: can't be set */
- csr6_mask_capture = (csr6_sc | csr6_ca),
- csr6_mask_defstate = (csr6_mask_capture | csr6_mbo),
- csr6_mask_hdcap = (csr6_mask_defstate | csr6_hbd | csr6_ps),
- csr6_mask_hdcaptt = (csr6_mask_hdcap | csr6_trh | csr6_trl),
- csr6_mask_fullcap = (csr6_mask_hdcaptt | csr6_fd),
- csr6_mask_fullpromisc = (csr6_pr | csr6_pm),
- csr6_mask_filters = (csr6_hp | csr6_ho | csr6_if),
- csr6_mask_100bt = (csr6_scr | csr6_pcs | csr6_hbd),
- };
- /* Keep the ring sizes a power of two for efficiency.
- Making the Tx ring too large decreases the effectiveness of channel
- bonding and packet priority.
- There are no ill effects from too-large receive rings. */
- #define TX_RING_SIZE 16
- #define RX_RING_SIZE 32
- #define MEDIA_MASK 31
- #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */
- #define TULIP_MIN_CACHE_LINE 8 /* in units of 32-bit words */
- #if defined(__sparc__) || defined(__hppa__)
- /* The UltraSparc PCI controllers will disconnect at every 64-byte
- * crossing anyways so it makes no sense to tell Tulip to burst
- * any more than that.
- */
- #define TULIP_MAX_CACHE_LINE 16 /* in units of 32-bit words */
- #else
- #define TULIP_MAX_CACHE_LINE 32 /* in units of 32-bit words */
- #endif
- /* Ring-wrap flag in length field, use for last ring entry.
- 0x01000000 means chain on buffer2 address,
- 0x02000000 means use the ring start address in CSR2/3.
- Note: Some work-alike chips do not function correctly in chained mode.
- The ASIX chip works only in chained mode.
- Thus we indicates ring mode, but always write the 'next' field for
- chained mode as well.
- */
- #define DESC_RING_WRAP 0x02000000
- #define EEPROM_SIZE 128 /* 2 << EEPROM_ADDRLEN */
- #define RUN_AT(x) (jiffies + (x))
- #if defined(__i386__) /* AKA get_unaligned() */
- #define get_u16(ptr) (*(u16 *)(ptr))
- #else
- #define get_u16(ptr) (((u8*)(ptr))[0] + (((u8*)(ptr))[1]<<8))
- #endif
- struct medialeaf {
- u8 type;
- u8 media;
- unsigned char *leafdata;
- };
- struct mediatable {
- u16 defaultmedia;
- u8 leafcount;
- u8 csr12dir; /* General purpose pin directions. */
- unsigned has_mii:1;
- unsigned has_nonmii:1;
- unsigned has_reset:6;
- u32 csr15dir;
- u32 csr15val; /* 21143 NWay setting. */
- struct medialeaf mleaf[0];
- };
- struct mediainfo {
- struct mediainfo *next;
- int info_type;
- int index;
- unsigned char *info;
- };
- struct ring_info {
- struct sk_buff *skb;
- dma_addr_t mapping;
- };
- struct tulip_private {
- const char *product_name;
- struct net_device *next_module;
- struct tulip_rx_desc *rx_ring;
- struct tulip_tx_desc *tx_ring;
- dma_addr_t rx_ring_dma;
- dma_addr_t tx_ring_dma;
- /* The saved address of a sent-in-place packet/buffer, for skfree(). */
- struct ring_info tx_buffers[TX_RING_SIZE];
- /* The addresses of receive-in-place skbuffs. */
- struct ring_info rx_buffers[RX_RING_SIZE];
- u16 setup_frame[96]; /* Pseudo-Tx frame to init address table. */
- int chip_id;
- int revision;
- int flags;
- struct net_device_stats stats;
- struct timer_list timer; /* Media selection timer. */
- u32 mc_filter[2];
- spinlock_t lock;
- spinlock_t mii_lock;
- unsigned int cur_rx, cur_tx; /* The next free ring entry */
- unsigned int dirty_rx, dirty_tx; /* The ring entries to be free()ed. */
- #ifdef CONFIG_NET_HW_FLOWCONTROL
- #define RX_A_NBF_STOP 0xffffff3f /* To disable RX and RX-NOBUF ints. */
- int fc_bit;
- int mit_sel;
- int mit_change; /* Signal for Interrupt Mitigtion */
- #endif
- unsigned int full_duplex:1; /* Full-duplex operation requested. */
- unsigned int full_duplex_lock:1;
- unsigned int fake_addr:1; /* Multiport board faked address. */
- unsigned int default_port:4; /* Last dev->if_port value. */
- unsigned int media2:4; /* Secondary monitored media port. */
- unsigned int medialock:1; /* Don't sense media type. */
- unsigned int mediasense:1; /* Media sensing in progress. */
- unsigned int nway:1, nwayset:1; /* 21143 internal NWay. */
- unsigned int csr0; /* CSR0 setting. */
- unsigned int csr6; /* Current CSR6 control settings. */
- unsigned char eeprom[EEPROM_SIZE]; /* Serial EEPROM contents. */
- void (*link_change) (struct net_device * dev, int csr5);
- u16 sym_advertise, mii_advertise; /* NWay capabilities advertised. */
- u16 lpar; /* 21143 Link partner ability. */
- u16 advertising[4];
- signed char phys[4], mii_cnt; /* MII device addresses. */
- struct mediatable *mtable;
- int cur_index; /* Current media index. */
- int saved_if_port;
- struct pci_dev *pdev;
- int ttimer;
- int susp_rx;
- unsigned long nir;
- unsigned long base_addr;
- int csr12_shadow;
- int pad0; /* Used for 8-byte alignment */
- };
- struct eeprom_fixup {
- char *name;
- unsigned char addr0;
- unsigned char addr1;
- unsigned char addr2;
- u16 newtable[32]; /* Max length below. */
- };
- /* 21142.c */
- extern u16 t21142_csr14[];
- void t21142_timer(unsigned long data);
- void t21142_start_nway(struct net_device *dev);
- void t21142_lnk_change(struct net_device *dev, int csr5);
- /* PNIC2.c */
- void pnic2_lnk_change(struct net_device *dev, int csr5);
- void pnic2_timer(unsigned long data);
- void pnic2_start_nway(struct net_device *dev);
- void pnic2_lnk_change(struct net_device *dev, int csr5);
- /* eeprom.c */
- void tulip_parse_eeprom(struct net_device *dev);
- int tulip_read_eeprom(long ioaddr, int location, int addr_len);
- /* interrupt.c */
- extern unsigned int tulip_max_interrupt_work;
- extern int tulip_rx_copybreak;
- void tulip_interrupt(int irq, void *dev_instance, struct pt_regs *regs);
- int tulip_refill_rx(struct net_device *dev);
- /* media.c */
- int tulip_mdio_read(struct net_device *dev, int phy_id, int location);
- void tulip_mdio_write(struct net_device *dev, int phy_id, int location, int value);
- void tulip_select_media(struct net_device *dev, int startup);
- int tulip_check_duplex(struct net_device *dev);
- void tulip_find_mii (struct net_device *dev, int board_idx);
- /* pnic.c */
- void pnic_do_nway(struct net_device *dev);
- void pnic_lnk_change(struct net_device *dev, int csr5);
- void pnic_timer(unsigned long data);
- /* timer.c */
- void tulip_timer(unsigned long data);
- void mxic_timer(unsigned long data);
- void comet_timer(unsigned long data);
- /* tulip_core.c */
- extern int tulip_debug;
- extern const char * const medianame[];
- extern const char tulip_media_cap[];
- extern struct tulip_chip_table tulip_tbl[];
- extern u8 t21040_csr13[];
- extern u16 t21041_csr13[];
- extern u16 t21041_csr14[];
- extern u16 t21041_csr15[];
- #ifndef USE_IO_OPS
- #undef inb
- #undef inw
- #undef inl
- #undef outb
- #undef outw
- #undef outl
- #define inb(addr) readb((void*)(addr))
- #define inw(addr) readw((void*)(addr))
- #define inl(addr) readl((void*)(addr))
- #define outb(val,addr) writeb((val), (void*)(addr))
- #define outw(val,addr) writew((val), (void*)(addr))
- #define outl(val,addr) writel((val), (void*)(addr))
- #endif /* !USE_IO_OPS */
- static inline void tulip_start_rxtx(struct tulip_private *tp)
- {
- long ioaddr = tp->base_addr;
- outl(tp->csr6 | RxTx, ioaddr + CSR6);
- barrier();
- (void) inl(ioaddr + CSR6); /* mmio sync */
- }
- static inline void tulip_stop_rxtx(struct tulip_private *tp)
- {
- long ioaddr = tp->base_addr;
- u32 csr6 = inl(ioaddr + CSR6);
- if (csr6 & RxTx) {
- outl(csr6 & ~RxTx, ioaddr + CSR6);
- barrier();
- (void) inl(ioaddr + CSR6); /* mmio sync */
- }
- }
- static inline void tulip_restart_rxtx(struct tulip_private *tp)
- {
- tulip_stop_rxtx(tp);
- udelay(5);
- tulip_start_rxtx(tp);
- }
- #endif /* __NET_TULIP_H__ */