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linux/drivers/net/sonic.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

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/*
* Helpfile for sonic.c
*
* (C) Waldorf Electronics, Germany
* Written by Andreas Busse
*
* NOTE: most of the structure definitions here are endian dependent.
* If you want to use this driver on big endian machines, the data
* and pad structure members must be exchanged. Also, the structures
* need to be changed accordingly to the bus size.
*
* 981229 MSch: did just that for the 68k Mac port (32 bit, big endian),
* see CONFIG_MACSONIC branch below.
*
*/
#ifndef SONIC_H
#define SONIC_H
#include <linux/config.h>
/*
* SONIC register offsets
*/
#define SONIC_CMD 0x00
#define SONIC_DCR 0x01
#define SONIC_RCR 0x02
#define SONIC_TCR 0x03
#define SONIC_IMR 0x04
#define SONIC_ISR 0x05
#define SONIC_UTDA 0x06
#define SONIC_CTDA 0x07
#define SONIC_URDA 0x0d
#define SONIC_CRDA 0x0e
#define SONIC_EOBC 0x13
#define SONIC_URRA 0x14
#define SONIC_RSA 0x15
#define SONIC_REA 0x16
#define SONIC_RRP 0x17
#define SONIC_RWP 0x18
#define SONIC_RSC 0x2b
#define SONIC_CEP 0x21
#define SONIC_CAP2 0x22
#define SONIC_CAP1 0x23
#define SONIC_CAP0 0x24
#define SONIC_CE 0x25
#define SONIC_CDP 0x26
#define SONIC_CDC 0x27
#define SONIC_WT0 0x29
#define SONIC_WT1 0x2a
#define SONIC_SR 0x28
/* test-only registers */
#define SONIC_TPS 0x08
#define SONIC_TFC 0x09
#define SONIC_TSA0 0x0a
#define SONIC_TSA1 0x0b
#define SONIC_TFS 0x0c
#define SONIC_CRBA0 0x0f
#define SONIC_CRBA1 0x10
#define SONIC_RBWC0 0x11
#define SONIC_RBWC1 0x12
#define SONIC_TTDA 0x20
#define SONIC_MDT 0x2f
#define SONIC_TRBA0 0x19
#define SONIC_TRBA1 0x1a
#define SONIC_TBWC0 0x1b
#define SONIC_TBWC1 0x1c
#define SONIC_LLFA 0x1f
#define SONIC_ADDR0 0x1d
#define SONIC_ADDR1 0x1e
/*
* Error counters
*/
#define SONIC_CRCT 0x2c
#define SONIC_FAET 0x2d
#define SONIC_MPT 0x2e
#define SONIC_DCR2 0x3f
/*
* SONIC command bits
*/
#define SONIC_CR_LCAM 0x0200
#define SONIC_CR_RRRA 0x0100
#define SONIC_CR_RST 0x0080
#define SONIC_CR_ST 0x0020
#define SONIC_CR_STP 0x0010
#define SONIC_CR_RXEN 0x0008
#define SONIC_CR_RXDIS 0x0004
#define SONIC_CR_TXP 0x0002
#define SONIC_CR_HTX 0x0001
/*
* SONIC data configuration bits
*/
#define SONIC_DCR_EXBUS 0x8000
#define SONIC_DCR_LBR 0x2000
#define SONIC_DCR_PO1 0x1000
#define SONIC_DCR_PO0 0x0800
#define SONIC_DCR_SBUS 0x0400
#define SONIC_DCR_USR1 0x0200
#define SONIC_DCR_USR0 0x0100
#define SONIC_DCR_WC1 0x0080
#define SONIC_DCR_WC0 0x0040
#define SONIC_DCR_DW 0x0020
#define SONIC_DCR_BMS 0x0010
#define SONIC_DCR_RFT1 0x0008
#define SONIC_DCR_RFT0 0x0004
#define SONIC_DCR_TFT1 0x0002
#define SONIC_DCR_TFT0 0x0001
/*
* Constants for the SONIC receive control register.
*/
#define SONIC_RCR_ERR 0x8000
#define SONIC_RCR_RNT 0x4000
#define SONIC_RCR_BRD 0x2000
#define SONIC_RCR_PRO 0x1000
#define SONIC_RCR_AMC 0x0800
#define SONIC_RCR_LB1 0x0400
#define SONIC_RCR_LB0 0x0200
#define SONIC_RCR_MC 0x0100
#define SONIC_RCR_BC 0x0080
#define SONIC_RCR_LPKT 0x0040
#define SONIC_RCR_CRS 0x0020
#define SONIC_RCR_COL 0x0010
#define SONIC_RCR_CRCR 0x0008
#define SONIC_RCR_FAER 0x0004
#define SONIC_RCR_LBK 0x0002
#define SONIC_RCR_PRX 0x0001
#define SONIC_RCR_LB_OFF 0
#define SONIC_RCR_LB_MAC SONIC_RCR_LB0
#define SONIC_RCR_LB_ENDEC SONIC_RCR_LB1
#define SONIC_RCR_LB_TRANS (SONIC_RCR_LB0 | SONIC_RCR_LB1)
/* default RCR setup */
#define SONIC_RCR_DEFAULT (SONIC_RCR_BRD)
/*
* SONIC Transmit Control register bits
*/
#define SONIC_TCR_PINTR 0x8000
#define SONIC_TCR_POWC 0x4000
#define SONIC_TCR_CRCI 0x2000
#define SONIC_TCR_EXDIS 0x1000
#define SONIC_TCR_EXD 0x0400
#define SONIC_TCR_DEF 0x0200
#define SONIC_TCR_NCRS 0x0100
#define SONIC_TCR_CRLS 0x0080
#define SONIC_TCR_EXC 0x0040
#define SONIC_TCR_PMB 0x0008
#define SONIC_TCR_FU 0x0004
#define SONIC_TCR_BCM 0x0002
#define SONIC_TCR_PTX 0x0001
#define SONIC_TCR_DEFAULT 0x0000
/*
* Constants for the SONIC_INTERRUPT_MASK and
* SONIC_INTERRUPT_STATUS registers.
*/
#define SONIC_INT_BR 0x4000
#define SONIC_INT_HBL 0x2000
#define SONIC_INT_LCD 0x1000
#define SONIC_INT_PINT 0x0800
#define SONIC_INT_PKTRX 0x0400
#define SONIC_INT_TXDN 0x0200
#define SONIC_INT_TXER 0x0100
#define SONIC_INT_TC 0x0080
#define SONIC_INT_RDE 0x0040
#define SONIC_INT_RBE 0x0020
#define SONIC_INT_RBAE 0x0010
#define SONIC_INT_CRC 0x0008
#define SONIC_INT_FAE 0x0004
#define SONIC_INT_MP 0x0002
#define SONIC_INT_RFO 0x0001
/*
* The interrupts we allow.
*/
#define SONIC_IMR_DEFAULT (SONIC_INT_BR | \
SONIC_INT_LCD | \
SONIC_INT_PINT | \
SONIC_INT_PKTRX | \
SONIC_INT_TXDN | \
SONIC_INT_TXER | \
SONIC_INT_RDE | \
SONIC_INT_RBE | \
SONIC_INT_RBAE | \
SONIC_INT_CRC | \
SONIC_INT_FAE | \
SONIC_INT_MP)
#define SONIC_END_OF_LINKS 0x0001
#ifdef CONFIG_MACSONIC
/*
* Big endian like structures on 680x0 Macs
*/
typedef struct {
u32 rx_bufadr_l; /* receive buffer ptr */
u32 rx_bufadr_h;
u32 rx_bufsize_l; /* no. of words in the receive buffer */
u32 rx_bufsize_h;
} sonic_rr_t;
/*
* Sonic receive descriptor. Receive descriptors are
* kept in a linked list of these structures.
*/
typedef struct {
SREGS_PAD(pad0);
u16 rx_status; /* status after reception of a packet */
SREGS_PAD(pad1);
u16 rx_pktlen; /* length of the packet incl. CRC */
/*
* Pointers to the location in the receive buffer area (RBA)
* where the packet resides. A packet is always received into
* a contiguous piece of memory.
*/
SREGS_PAD(pad2);
u16 rx_pktptr_l;
SREGS_PAD(pad3);
u16 rx_pktptr_h;
SREGS_PAD(pad4);
u16 rx_seqno; /* sequence no. */
SREGS_PAD(pad5);
u16 link; /* link to next RDD (end if EOL bit set) */
/*
* Owner of this descriptor, 0= driver, 1=sonic
*/
SREGS_PAD(pad6);
u16 in_use;
caddr_t rda_next; /* pointer to next RD */
} sonic_rd_t;
/*
* Describes a Transmit Descriptor
*/
typedef struct {
SREGS_PAD(pad0);
u16 tx_status; /* status after transmission of a packet */
SREGS_PAD(pad1);
u16 tx_config; /* transmit configuration for this packet */
SREGS_PAD(pad2);
u16 tx_pktsize; /* size of the packet to be transmitted */
SREGS_PAD(pad3);
u16 tx_frag_count; /* no. of fragments */
SREGS_PAD(pad4);
u16 tx_frag_ptr_l;
SREGS_PAD(pad5);
u16 tx_frag_ptr_h;
SREGS_PAD(pad6);
u16 tx_frag_size;
SREGS_PAD(pad7);
u16 link; /* ptr to next descriptor */
} sonic_td_t;
/*
* Describes an entry in the CAM Descriptor Area.
*/
typedef struct {
SREGS_PAD(pad0);
u16 cam_entry_pointer;
SREGS_PAD(pad1);
u16 cam_cap0;
SREGS_PAD(pad2);
u16 cam_cap1;
SREGS_PAD(pad3);
u16 cam_cap2;
} sonic_cd_t;
#define CAM_DESCRIPTORS 16
typedef struct {
sonic_cd_t cam_desc[CAM_DESCRIPTORS];
SREGS_PAD(pad);
u16 cam_enable;
} sonic_cda_t;
#else /* original declarations, little endian 32 bit */
/*
* structure definitions
*/
typedef struct {
u32 rx_bufadr_l; /* receive buffer ptr */
u32 rx_bufadr_h;
u32 rx_bufsize_l; /* no. of words in the receive buffer */
u32 rx_bufsize_h;
} sonic_rr_t;
/*
* Sonic receive descriptor. Receive descriptors are
* kept in a linked list of these structures.
*/
typedef struct {
u16 rx_status; /* status after reception of a packet */
SREGS_PAD(pad0);
u16 rx_pktlen; /* length of the packet incl. CRC */
SREGS_PAD(pad1);
/*
* Pointers to the location in the receive buffer area (RBA)
* where the packet resides. A packet is always received into
* a contiguous piece of memory.
*/
u16 rx_pktptr_l;
SREGS_PAD(pad2);
u16 rx_pktptr_h;
SREGS_PAD(pad3);
u16 rx_seqno; /* sequence no. */
SREGS_PAD(pad4);
u16 link; /* link to next RDD (end if EOL bit set) */
SREGS_PAD(pad5);
/*
* Owner of this descriptor, 0= driver, 1=sonic
*/
u16 in_use;
SREGS_PAD(pad6);
caddr_t rda_next; /* pointer to next RD */
} sonic_rd_t;
/*
* Describes a Transmit Descriptor
*/
typedef struct {
u16 tx_status; /* status after transmission of a packet */
SREGS_PAD(pad0);
u16 tx_config; /* transmit configuration for this packet */
SREGS_PAD(pad1);
u16 tx_pktsize; /* size of the packet to be transmitted */
SREGS_PAD(pad2);
u16 tx_frag_count; /* no. of fragments */
SREGS_PAD(pad3);
u16 tx_frag_ptr_l;
SREGS_PAD(pad4);
u16 tx_frag_ptr_h;
SREGS_PAD(pad5);
u16 tx_frag_size;
SREGS_PAD(pad6);
u16 link; /* ptr to next descriptor */
SREGS_PAD(pad7);
} sonic_td_t;
/*
* Describes an entry in the CAM Descriptor Area.
*/
typedef struct {
u16 cam_entry_pointer;
SREGS_PAD(pad0);
u16 cam_cap0;
SREGS_PAD(pad1);
u16 cam_cap1;
SREGS_PAD(pad2);
u16 cam_cap2;
SREGS_PAD(pad3);
} sonic_cd_t;
#define CAM_DESCRIPTORS 16
typedef struct {
sonic_cd_t cam_desc[CAM_DESCRIPTORS];
u16 cam_enable;
SREGS_PAD(pad);
} sonic_cda_t;
#endif /* endianness */
/*
* Some tunables for the buffer areas. Power of 2 is required
* the current driver uses one receive buffer for each descriptor.
*
* MSch: use more buffer space for the slow m68k Macs!
*/
#ifdef CONFIG_MACSONIC
#define SONIC_NUM_RRS 32 /* number of receive resources */
#define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
#define SONIC_NUM_TDS 32 /* number of transmit descriptors */
#else
#define SONIC_NUM_RRS 16 /* number of receive resources */
#define SONIC_NUM_RDS SONIC_NUM_RRS /* number of receive descriptors */
#define SONIC_NUM_TDS 16 /* number of transmit descriptors */
#endif
#define SONIC_RBSIZE 1520 /* size of one resource buffer */
#define SONIC_RDS_MASK (SONIC_NUM_RDS-1)
#define SONIC_TDS_MASK (SONIC_NUM_TDS-1)
/* Information that need to be kept for each board. */
struct sonic_local {
sonic_cda_t cda; /* virtual CPU address of CDA */
sonic_td_t tda[SONIC_NUM_TDS]; /* transmit descriptor area */
sonic_rr_t rra[SONIC_NUM_RRS]; /* receive resource area */
sonic_rd_t rda[SONIC_NUM_RDS]; /* receive descriptor area */
struct sk_buff *tx_skb[SONIC_NUM_TDS]; /* skbuffs for packets to transmit */
unsigned int tx_laddr[SONIC_NUM_TDS]; /* logical DMA address fro skbuffs */
unsigned char *rba; /* start of receive buffer areas */
unsigned int cda_laddr; /* logical DMA address of CDA */
unsigned int tda_laddr; /* logical DMA address of TDA */
unsigned int rra_laddr; /* logical DMA address of RRA */
unsigned int rda_laddr; /* logical DMA address of RDA */
unsigned int rba_laddr; /* logical DMA address of RBA */
unsigned int cur_rra; /* current indexes to resource areas */
unsigned int cur_rx;
unsigned int cur_tx;
unsigned int dirty_tx; /* last unacked transmit packet */
char tx_full;
struct net_device_stats stats;
};
#define TX_TIMEOUT 6
/* Index to functions, as function prototypes. */
static int sonic_open(struct net_device *dev);
static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev);
static irqreturn_t sonic_interrupt(int irq, void *dev_id, struct pt_regs *regs);
static void sonic_rx(struct net_device *dev);
static int sonic_close(struct net_device *dev);
static struct net_device_stats *sonic_get_stats(struct net_device *dev);
static void sonic_multicast_list(struct net_device *dev);
static int sonic_init(struct net_device *dev);
static void sonic_tx_timeout(struct net_device *dev);
static const char *version =
"sonic.c:v0.92 20.9.98 tsbogend@alpha.franken.de\n";
#endif /* SONIC_H */
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