/* SPDX-License-Identifier: GPL-2.0 */ /* 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/interrupt.h> #include <linux/sonet.h> #include <linux/skbuff.h> #include <linux/time.h> #include <linux/pci.h> #include <linux/spinlock.h> #include <linux/atomic.h> #include "midway.h" #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 { void __iomem *start; /* counting in bytes */ int order; }; struct eni_tx { void __iomem *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 */ void __iomem *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 */ ktime_t 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 */ void __iomem *ioaddr; void __iomem *phy; /* PHY interface chip registers */ void __iomem *reg; /* register base */ void __iomem *ram; /* RAM base */ void __iomem *vci; /* VCI table */ void __iomem *rx_dma; /* RX DMA queue */ void __iomem *tx_dma; /* TX DMA queue */ void __iomem *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 */ struct eni_zero { /* aligned "magic" zeroes */ u32 *addr; dma_addr_t dma; } zero; 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) #endifOverall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 428 | 88.61% | 5 | 45.45% |
| Chas Williams | 30 | 6.21% | 1 | 9.09% |
| François Romieu | 19 | 3.93% | 1 | 9.09% |
| Alexey Dobriyan | 3 | 0.62% | 1 | 9.09% |
| Greg Kroah-Hartman | 1 | 0.21% | 1 | 9.09% |
| Hideaki Yoshifuji / 吉藤英明 | 1 | 0.21% | 1 | 9.09% |
| Arun Sharma | 1 | 0.21% | 1 | 9.09% |
| Total | 483 | 100.00% | 11 | 100.00% |