104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/* drivers/atm/zatm.h - ZeitNet ZN122x device driver declarations */
|
|
|
|
/* Written 1995-1998 by Werner Almesberger, EPFL LRC/ICA */
|
|
|
|
|
|
#ifndef DRIVER_ATM_ZATM_H
|
|
#define DRIVER_ATM_ZATM_H
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <linux/atm.h>
|
|
#include <linux/atmdev.h>
|
|
#include <linux/sonet.h>
|
|
#include <linux/pci.h>
|
|
|
|
|
|
#define DEV_LABEL "zatm"
|
|
|
|
#define MAX_AAL5_PDU 10240 /* allocate for AAL5 PDUs of this size */
|
|
#define MAX_RX_SIZE_LD 14 /* ceil(log2((MAX_AAL5_PDU+47)/48)) */
|
|
|
|
#define LOW_MARK 12 /* start adding new buffers if less than 12 */
|
|
#define HIGH_MARK 30 /* stop adding buffers after reaching 30 */
|
|
#define OFF_CNG_THRES 5 /* threshold for offset changes */
|
|
|
|
#define RX_SIZE 2 /* RX lookup entry size (in bytes) */
|
|
#define NR_POOLS 32 /* number of free buffer pointers */
|
|
#define POOL_SIZE 8 /* buffer entry size (in bytes) */
|
|
#define NR_SHAPERS 16 /* number of shapers */
|
|
#define SHAPER_SIZE 4 /* shaper entry size (in bytes) */
|
|
#define VC_SIZE 32 /* VC dsc (TX or RX) size (in bytes) */
|
|
|
|
#define RING_ENTRIES 32 /* ring entries (without back pointer) */
|
|
#define RING_WORDS 4 /* ring element size */
|
|
#define RING_SIZE (sizeof(unsigned long)*(RING_ENTRIES+1)*RING_WORDS)
|
|
|
|
#define NR_MBX 4 /* four mailboxes */
|
|
#define MBX_RX_0 0 /* mailbox indices */
|
|
#define MBX_RX_1 1
|
|
#define MBX_TX_0 2
|
|
#define MBX_TX_1 3
|
|
|
|
struct zatm_vcc {
|
|
/*-------------------------------- RX part */
|
|
int rx_chan; /* RX channel, 0 if none */
|
|
int pool; /* free buffer pool */
|
|
/*-------------------------------- TX part */
|
|
int tx_chan; /* TX channel, 0 if none */
|
|
int shaper; /* shaper, <0 if none */
|
|
struct sk_buff_head tx_queue; /* list of buffers in transit */
|
|
wait_queue_head_t tx_wait; /* for close */
|
|
u32 *ring; /* transmit ring */
|
|
int ring_curr; /* current write position */
|
|
int txing; /* number of transmits in progress */
|
|
struct sk_buff_head backlog; /* list of buffers waiting for ring */
|
|
};
|
|
|
|
struct zatm_dev {
|
|
/*-------------------------------- TX part */
|
|
int tx_bw; /* remaining bandwidth */
|
|
u32 free_shapers; /* bit set */
|
|
int ubr; /* UBR shaper; -1 if none */
|
|
int ubr_ref_cnt; /* number of VCs using UBR shaper */
|
|
/*-------------------------------- RX part */
|
|
int pool_ref[NR_POOLS]; /* free buffer pool usage counters */
|
|
volatile struct sk_buff *last_free[NR_POOLS];
|
|
/* last entry in respective pool */
|
|
struct sk_buff_head pool[NR_POOLS];/* free buffer pools */
|
|
struct zatm_pool_info pool_info[NR_POOLS]; /* pool information */
|
|
/*-------------------------------- maps */
|
|
struct atm_vcc **tx_map; /* TX VCCs */
|
|
struct atm_vcc **rx_map; /* RX VCCs */
|
|
int chans; /* map size, must be 2^n */
|
|
/*-------------------------------- mailboxes */
|
|
unsigned long mbx_start[NR_MBX];/* start addresses */
|
|
dma_addr_t mbx_dma[NR_MBX];
|
|
u16 mbx_end[NR_MBX]; /* end offset (in bytes) */
|
|
/*-------------------------------- other pointers */
|
|
u32 pool_base; /* Free buffer pool dsc (word addr) */
|
|
/*-------------------------------- ZATM links */
|
|
struct atm_dev *more; /* other ZATM devices */
|
|
/*-------------------------------- general information */
|
|
int mem; /* RAM on board (in bytes) */
|
|
int khz; /* timer clock */
|
|
int copper; /* PHY type */
|
|
unsigned char irq; /* IRQ */
|
|
unsigned int base; /* IO base address */
|
|
struct pci_dev *pci_dev; /* PCI stuff */
|
|
spinlock_t lock;
|
|
};
|
|
|
|
|
|
#define ZATM_DEV(d) ((struct zatm_dev *) (d)->dev_data)
|
|
#define ZATM_VCC(d) ((struct zatm_vcc *) (d)->dev_data)
|
|
|
|
|
|
struct zatm_skb_prv {
|
|
struct atm_skb_data _; /* reserved */
|
|
u32 *dsc; /* pointer to skb's descriptor */
|
|
};
|
|
|
|
#define ZATM_PRV_DSC(skb) (((struct zatm_skb_prv *) (skb)->cb)->dsc)
|
|
|
|
#endif
|