484 lines
12 KiB
C
484 lines
12 KiB
C
/*
|
|
* 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 */
|