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- /* drivers/atm/eni.h - Efficient Networks ENI155P device driver declarations */
- /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
- #ifndef DRIVER_ATM_ENI_H
- #define DRIVER_ATM_ENI_H
- #include <linux/atm.h>
- #include <linux/atmdev.h>
- #include <linux/sonet.h>
- #include <linux/skbuff.h>
- #include <linux/time.h>
- #include <linux/pci.h>
- #include <linux/spinlock.h>
- #include <asm/atomic.h>
- #include "midway.h"
- #define KERNEL_OFFSET 0xC0000000 /* kernel 0x0 is at phys 0xC0000000 */
- #define DEV_LABEL "eni"
- #define UBR_BUFFER (128*1024) /* UBR buffer size */
- #define RX_DMA_BUF 8 /* burst and skip a few things */
- #define TX_DMA_BUF 100 /* should be enough for 64 kB */
- #define DEFAULT_RX_MULT 300 /* max_sdu*3 */
- #define DEFAULT_TX_MULT 300 /* max_sdu*3 */
- #define ENI_ZEROES_SIZE 4 /* need that many DMA-able zero bytes */
- struct eni_free {
- unsigned long start; /* counting in bytes */
- int order;
- };
- struct eni_tx {
- unsigned long send; /* base, 0 if unused */
- int prescaler; /* shaping prescaler */
- int resolution; /* shaping divider */
- unsigned long tx_pos; /* current TX write position */
- unsigned long words; /* size of TX queue */
- int index; /* TX channel number */
- int reserved; /* reserved peak cell rate */
- int shaping; /* shaped peak cell rate */
- struct sk_buff_head backlog; /* queue of waiting TX buffers */
- };
- struct eni_vcc {
- int (*rx)(struct atm_vcc *vcc); /* RX function, NULL if none */
- unsigned long recv; /* receive buffer */
- unsigned long words; /* its size in words */
- unsigned long descr; /* next descriptor (RX) */
- unsigned long rx_pos; /* current RX descriptor pos */
- struct eni_tx *tx; /* TXer, NULL if none */
- int rxing; /* number of pending PDUs */
- int servicing; /* number of waiting VCs (0 or 1) */
- int txing; /* number of pending TX bytes */
- struct timeval timestamp; /* for RX timing */
- struct atm_vcc *next; /* next pending RX */
- struct sk_buff *last; /* last PDU being DMAed (used to carry
- discard information) */
- };
- struct eni_dev {
- /*-------------------------------- spinlock */
- spinlock_t lock; /* sync with interrupt */
- struct tasklet_struct task; /* tasklet for interrupt work */
- u32 events; /* pending events */
- /*-------------------------------- base pointers into Midway address
- space */
- unsigned long phy; /* PHY interface chip registers */
- unsigned long reg; /* register base */
- unsigned long ram; /* RAM base */
- unsigned long vci; /* VCI table */
- unsigned long rx_dma; /* RX DMA queue */
- unsigned long tx_dma; /* TX DMA queue */
- unsigned long service; /* service list */
- /*-------------------------------- TX part */
- struct eni_tx tx[NR_CHAN]; /* TX channels */
- struct eni_tx *ubr; /* UBR channel */
- struct sk_buff_head tx_queue; /* PDUs currently being TX DMAed*/
- wait_queue_head_t tx_wait; /* for close */
- int tx_bw; /* remaining bandwidth */
- u32 dma[TX_DMA_BUF*2]; /* DMA request scratch area */
- int tx_mult; /* buffer size multiplier (percent) */
- /*-------------------------------- RX part */
- u32 serv_read; /* host service read index */
- struct atm_vcc *fast,*last_fast;/* queues of VCCs with pending PDUs */
- struct atm_vcc *slow,*last_slow;
- struct atm_vcc **rx_map; /* for fast lookups */
- struct sk_buff_head rx_queue; /* PDUs currently being RX-DMAed */
- wait_queue_head_t rx_wait; /* for close */
- int rx_mult; /* buffer size multiplier (percent) */
- /*-------------------------------- statistics */
- unsigned long lost; /* number of lost cells (RX) */
- /*-------------------------------- memory management */
- unsigned long base_diff; /* virtual-real base address */
- int free_len; /* free list length */
- struct eni_free *free_list; /* free list */
- int free_list_size; /* maximum size of free list */
- /*-------------------------------- ENI links */
- struct atm_dev *more; /* other ENI devices */
- /*-------------------------------- general information */
- int mem; /* RAM on board (in bytes) */
- int asic; /* PCI interface type, 0 for FPGA */
- unsigned int irq; /* IRQ */
- struct pci_dev *pci_dev; /* PCI stuff */
- };
- #define ENI_DEV(d) ((struct eni_dev *) (d)->dev_data)
- #define ENI_VCC(d) ((struct eni_vcc *) (d)->dev_data)
- struct eni_skb_prv {
- struct atm_skb_data _; /* reserved */
- unsigned long pos; /* position of next descriptor */
- int size; /* PDU size in reassembly buffer */
- dma_addr_t paddr; /* DMA handle */
- };
- #define ENI_PRV_SIZE(skb) (((struct eni_skb_prv *) (skb)->cb)->size)
- #define ENI_PRV_POS(skb) (((struct eni_skb_prv *) (skb)->cb)->pos)
- #define ENI_PRV_PADDR(skb) (((struct eni_skb_prv *) (skb)->cb)->paddr)
- #endif
