| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Linus Torvalds (pre-git) | 1397 | 99.57% | 2 | 33.33% |
| Chas Williams | 2 | 0.14% | 1 | 16.67% |
| Thomas Gleixner | 2 | 0.14% | 1 | 16.67% |
| Arnaldo Carvalho de Melo | 1 | 0.07% | 1 | 16.67% |
| Al Viro | 1 | 0.07% | 1 | 16.67% |
| Total | 1403 | 6 |
/* SPDX-License-Identifier: GPL-2.0-or-later */ /* Madge Horizon ATM Adapter driver. Copyright (C) 1995-1999 Madge Networks Ltd. */ /* IMPORTANT NOTE: Madge Networks no longer makes the adapters supported by this driver and makes no commitment to maintain it. */ /* too many macros - change to inline functions */ #ifndef DRIVER_ATM_HORIZON_H #define DRIVER_ATM_HORIZON_H #ifdef CONFIG_ATM_HORIZON_DEBUG #define DEBUG_HORIZON #endif #define DEV_LABEL "hrz" #ifndef PCI_VENDOR_ID_MADGE #define PCI_VENDOR_ID_MADGE 0x10B6 #endif #ifndef PCI_DEVICE_ID_MADGE_HORIZON #define PCI_DEVICE_ID_MADGE_HORIZON 0x1000 #endif // diagnostic output #define PRINTK(severity,format,args...) \ printk(severity DEV_LABEL ": " format "\n" , ## args) #ifdef DEBUG_HORIZON #define DBG_ERR 0x0001 #define DBG_WARN 0x0002 #define DBG_INFO 0x0004 #define DBG_VCC 0x0008 #define DBG_QOS 0x0010 #define DBG_TX 0x0020 #define DBG_RX 0x0040 #define DBG_SKB 0x0080 #define DBG_IRQ 0x0100 #define DBG_FLOW 0x0200 #define DBG_BUS 0x0400 #define DBG_REGS 0x0800 #define DBG_DATA 0x1000 #define DBG_MASK 0x1fff /* the ## prevents the annoying double expansion of the macro arguments */ /* KERN_INFO is used since KERN_DEBUG often does not make it to the console */ #define PRINTDB(bits,format,args...) \ ( (debug & (bits)) ? printk (KERN_INFO DEV_LABEL ": " format , ## args) : 1 ) #define PRINTDM(bits,format,args...) \ ( (debug & (bits)) ? printk (format , ## args) : 1 ) #define PRINTDE(bits,format,args...) \ ( (debug & (bits)) ? printk (format "\n" , ## args) : 1 ) #define PRINTD(bits,format,args...) \ ( (debug & (bits)) ? printk (KERN_INFO DEV_LABEL ": " format "\n" , ## args) : 1 ) #else #define PRINTD(bits,format,args...) #define PRINTDB(bits,format,args...) #define PRINTDM(bits,format,args...) #define PRINTDE(bits,format,args...) #endif #define PRINTDD(sec,fmt,args...) #define PRINTDDB(sec,fmt,args...) #define PRINTDDM(sec,fmt,args...) #define PRINTDDE(sec,fmt,args...) // fixed constants #define SPARE_BUFFER_POOL_SIZE MAX_VCS #define HRZ_MAX_VPI 4 #define MIN_PCI_LATENCY 48 // 24 IS TOO SMALL /* Horizon specific bits */ /* Register offsets */ #define HRZ_IO_EXTENT 0x80 #define DATA_PORT_OFF 0x00 #define TX_CHANNEL_PORT_OFF 0x04 #define TX_DESCRIPTOR_PORT_OFF 0x08 #define MEMORY_PORT_OFF 0x0C #define MEM_WR_ADDR_REG_OFF 0x14 #define MEM_RD_ADDR_REG_OFF 0x18 #define CONTROL_0_REG 0x1C #define INT_SOURCE_REG_OFF 0x20 #define INT_ENABLE_REG_OFF 0x24 #define MASTER_RX_ADDR_REG_OFF 0x28 #define MASTER_RX_COUNT_REG_OFF 0x2C #define MASTER_TX_ADDR_REG_OFF 0x30 #define MASTER_TX_COUNT_REG_OFF 0x34 #define TX_DESCRIPTOR_REG_OFF 0x38 #define TX_CHANNEL_CONFIG_COMMAND_OFF 0x40 #define TX_CHANNEL_CONFIG_DATA_OFF 0x44 #define TX_FREE_BUFFER_COUNT_OFF 0x48 #define RX_FREE_BUFFER_COUNT_OFF 0x4C #define TX_CONFIG_OFF 0x50 #define TX_STATUS_OFF 0x54 #define RX_CONFIG_OFF 0x58 #define RX_LINE_CONFIG_OFF 0x5C #define RX_QUEUE_RD_PTR_OFF 0x60 #define RX_QUEUE_WR_PTR_OFF 0x64 #define MAX_AAL5_CELL_COUNT_OFF 0x68 #define RX_CHANNEL_PORT_OFF 0x6C #define TX_CELL_COUNT_OFF 0x70 #define RX_CELL_COUNT_OFF 0x74 #define HEC_ERROR_COUNT_OFF 0x78 #define UNASSIGNED_CELL_COUNT_OFF 0x7C /* Register bit definitions */ /* Control 0 register */ #define SEEPROM_DO 0x00000001 #define SEEPROM_DI 0x00000002 #define SEEPROM_SK 0x00000004 #define SEEPROM_CS 0x00000008 #define DEBUG_BIT_0 0x00000010 #define DEBUG_BIT_1 0x00000020 #define DEBUG_BIT_2 0x00000040 // RESERVED 0x00000080 #define DEBUG_BIT_0_OE 0x00000100 #define DEBUG_BIT_1_OE 0x00000200 #define DEBUG_BIT_2_OE 0x00000400 // RESERVED 0x00000800 #define DEBUG_BIT_0_STATE 0x00001000 #define DEBUG_BIT_1_STATE 0x00002000 #define DEBUG_BIT_2_STATE 0x00004000 // RESERVED 0x00008000 #define GENERAL_BIT_0 0x00010000 #define GENERAL_BIT_1 0x00020000 #define GENERAL_BIT_2 0x00040000 #define GENERAL_BIT_3 0x00080000 #define RESET_HORIZON 0x00100000 #define RESET_ATM 0x00200000 #define RESET_RX 0x00400000 #define RESET_TX 0x00800000 #define RESET_HOST 0x01000000 // RESERVED 0x02000000 #define TARGET_RETRY_DISABLE 0x04000000 #define ATM_LAYER_SELECT 0x08000000 #define ATM_LAYER_STATUS 0x10000000 // RESERVED 0xE0000000 /* Interrupt source and enable registers */ #define RX_DATA_AV 0x00000001 #define RX_DISABLED 0x00000002 #define TIMING_MARKER 0x00000004 #define FORCED 0x00000008 #define RX_BUS_MASTER_COMPLETE 0x00000010 #define TX_BUS_MASTER_COMPLETE 0x00000020 #define ABR_TX_CELL_COUNT_INT 0x00000040 #define DEBUG_INT 0x00000080 // RESERVED 0xFFFFFF00 /* PIO and Bus Mastering */ #define MAX_PIO_COUNT 0x000000ff // 255 - make tunable? // 8188 is a hard limit for bus mastering #define MAX_TRANSFER_COUNT 0x00001ffc // 8188 #define MASTER_TX_AUTO_APPEND_DESC 0x80000000 /* TX channel config command port */ #define PCR_TIMER_ACCESS 0x0000 #define SCR_TIMER_ACCESS 0x0001 #define BUCKET_CAPACITY_ACCESS 0x0002 #define BUCKET_FULLNESS_ACCESS 0x0003 #define RATE_TYPE_ACCESS 0x0004 // UNUSED 0x00F8 #define TX_CHANNEL_CONFIG_MULT 0x0100 // UNUSED 0xF800 #define BUCKET_MAX_SIZE 0x003f /* TX channel config data port */ #define CLOCK_SELECT_SHIFT 4 #define CLOCK_DISABLE 0x00ff #define IDLE_RATE_TYPE 0x0 #define ABR_RATE_TYPE 0x1 #define VBR_RATE_TYPE 0x2 #define CBR_RATE_TYPE 0x3 /* TX config register */ #define DRVR_DRVRBAR_ENABLE 0x0001 #define TXCLK_MUX_SELECT_RCLK 0x0002 #define TRANSMIT_TIMING_MARKER 0x0004 #define LOOPBACK_TIMING_MARKER 0x0008 #define TX_TEST_MODE_16MHz 0x0000 #define TX_TEST_MODE_8MHz 0x0010 #define TX_TEST_MODE_5_33MHz 0x0020 #define TX_TEST_MODE_4MHz 0x0030 #define TX_TEST_MODE_3_2MHz 0x0040 #define TX_TEST_MODE_2_66MHz 0x0050 #define TX_TEST_MODE_2_29MHz 0x0060 #define TX_NORMAL_OPERATION 0x0070 #define ABR_ROUND_ROBIN 0x0080 /* TX status register */ #define IDLE_CHANNELS_MASK 0x00FF #define ABR_CELL_COUNT_REACHED_MULT 0x0100 #define ABR_CELL_COUNT_REACHED_MASK 0xFF /* RX config register */ #define NON_USER_CELLS_IN_ONE_CHANNEL 0x0008 #define RX_ENABLE 0x0010 #define IGNORE_UNUSED_VPI_VCI_BITS_SET 0x0000 #define NON_USER_UNUSED_VPI_VCI_BITS_SET 0x0020 #define DISCARD_UNUSED_VPI_VCI_BITS_SET 0x0040 /* RX line config register */ #define SIGNAL_LOSS 0x0001 #define FREQUENCY_DETECT_ERROR 0x0002 #define LOCK_DETECT_ERROR 0x0004 #define SELECT_INTERNAL_LOOPBACK 0x0008 #define LOCK_DETECT_ENABLE 0x0010 #define FREQUENCY_DETECT_ENABLE 0x0020 #define USER_FRAQ 0x0040 #define GXTALOUT_SELECT_DIV4 0x0080 #define GXTALOUT_SELECT_NO_GATING 0x0100 #define TIMING_MARKER_RECEIVED 0x0200 /* RX channel port */ #define RX_CHANNEL_MASK 0x03FF // UNUSED 0x3C00 #define FLUSH_CHANNEL 0x4000 #define RX_CHANNEL_UPDATE_IN_PROGRESS 0x8000 /* Receive queue entry */ #define RX_Q_ENTRY_LENGTH_MASK 0x0000FFFF #define RX_Q_ENTRY_CHANNEL_SHIFT 16 #define SIMONS_DODGEY_MARKER 0x08000000 #define RX_CONGESTION_EXPERIENCED 0x10000000 #define RX_CRC_10_OK 0x20000000 #define RX_CRC_32_OK 0x40000000 #define RX_COMPLETE_FRAME 0x80000000 /* Offsets and constants for use with the buffer memory */ /* Buffer pointers and channel types */ #define BUFFER_PTR_MASK 0x0000FFFF #define RX_INT_THRESHOLD_MULT 0x00010000 #define RX_INT_THRESHOLD_MASK 0x07FF #define INT_EVERY_N_CELLS 0x08000000 #define CONGESTION_EXPERIENCED 0x10000000 #define FIRST_CELL_OF_AAL5_FRAME 0x20000000 #define CHANNEL_TYPE_AAL5 0x00000000 #define CHANNEL_TYPE_RAW_CELLS 0x40000000 #define CHANNEL_TYPE_AAL3_4 0x80000000 /* Buffer status stuff */ #define BUFF_STATUS_MASK 0x00030000 #define BUFF_STATUS_EMPTY 0x00000000 #define BUFF_STATUS_CELL_AV 0x00010000 #define BUFF_STATUS_LAST_CELL_AV 0x00020000 /* Transmit channel stuff */ /* Receive channel stuff */ #define RX_CHANNEL_DISABLED 0x00000000 #define RX_CHANNEL_IDLE 0x00000001 /* General things */ #define INITIAL_CRC 0xFFFFFFFF // A Horizon u32, a byte! Really nasty. Horizon pointers are (32 bit) // word addresses and so standard C pointer operations break (as they // assume byte addresses); so we pretend that Horizon words (and word // pointers) are bytes (and byte pointers) for the purposes of having // a memory map that works. typedef u8 HDW; typedef struct cell_buf { HDW payload[12]; HDW next; HDW cell_count; // AAL5 rx bufs HDW res; union { HDW partial_crc; // AAL5 rx bufs HDW cell_header; // RAW bufs } u; } cell_buf; typedef struct tx_ch_desc { HDW rd_buf_type; HDW wr_buf_type; HDW partial_crc; HDW cell_header; } tx_ch_desc; typedef struct rx_ch_desc { HDW wr_buf_type; HDW rd_buf_type; } rx_ch_desc; typedef struct rx_q_entry { HDW entry; } rx_q_entry; #define TX_CHANS 8 #define RX_CHANS 1024 #define RX_QS 1024 #define MAX_VCS RX_CHANS /* Horizon buffer memory map */ // TX Channel Descriptors 2 // TX Initial Buffers 8 // TX_CHANS #define BUFN1_SIZE 118 // (126 - TX_CHANS) // RX/TX Start/End Buffers 4 #define BUFN2_SIZE 124 // RX Queue Entries 64 #define BUFN3_SIZE 192 // RX Channel Descriptors 128 #define BUFN4_SIZE 1408 // TOTAL cell_buff chunks 2048 // cell_buf bufs[2048]; // HDW dws[32768]; typedef struct MEMMAP { tx_ch_desc tx_descs[TX_CHANS]; // 8 * 4 = 32 , 0x0020 cell_buf inittxbufs[TX_CHANS]; // these are really cell_buf bufn1[BUFN1_SIZE]; // part of this pool cell_buf txfreebufstart; cell_buf txfreebufend; cell_buf rxfreebufstart; cell_buf rxfreebufend; // 8+118+1+1+1+1+124 = 254 cell_buf bufn2[BUFN2_SIZE]; // 16 * 254 = 4064 , 0x1000 rx_q_entry rx_q_entries[RX_QS]; // 1 * 1024 = 1024 , 0x1400 cell_buf bufn3[BUFN3_SIZE]; // 16 * 192 = 3072 , 0x2000 rx_ch_desc rx_descs[MAX_VCS]; // 2 * 1024 = 2048 , 0x2800 cell_buf bufn4[BUFN4_SIZE]; // 16 * 1408 = 22528 , 0x8000 } MEMMAP; #define memmap ((MEMMAP *)0) /* end horizon specific bits */ typedef enum { aal0, aal34, aal5 } hrz_aal; typedef enum { tx_busy, rx_busy, ultra } hrz_flags; // a single struct pointed to by atm_vcc->dev_data typedef struct { unsigned int tx_rate; unsigned int rx_rate; u16 channel; u16 tx_xbr_bits; u16 tx_pcr_bits; #if 0 u16 tx_scr_bits; u16 tx_bucket_bits; #endif hrz_aal aal; } hrz_vcc; struct hrz_dev { u32 iobase; u32 * membase; struct sk_buff * rx_skb; // skb being RXed unsigned int rx_bytes; // bytes remaining to RX within region void * rx_addr; // addr to send bytes to (for PIO) unsigned int rx_channel; // channel that the skb is going out on struct sk_buff * tx_skb; // skb being TXed unsigned int tx_bytes; // bytes remaining to TX within region void * tx_addr; // addr to send bytes from (for PIO) struct iovec * tx_iovec; // remaining regions unsigned int tx_regions; // number of remaining regions spinlock_t mem_lock; wait_queue_head_t tx_queue; u8 irq; unsigned long flags; u8 tx_last; u8 tx_idle; rx_q_entry * rx_q_reset; rx_q_entry * rx_q_entry; rx_q_entry * rx_q_wrap; struct atm_dev * atm_dev; u32 last_vc; int noof_spare_buffers; u16 spare_buffers[SPARE_BUFFER_POOL_SIZE]; u16 tx_channel_record[TX_CHANS]; // this is what we follow when we get incoming data u32 txer[MAX_VCS/32]; struct atm_vcc * rxer[MAX_VCS]; // cell rate allocation spinlock_t rate_lock; unsigned int rx_avail; unsigned int tx_avail; // dev stats unsigned long tx_cell_count; unsigned long rx_cell_count; unsigned long hec_error_count; unsigned long unassigned_cell_count; struct pci_dev * pci_dev; struct timer_list housekeeping; }; typedef struct hrz_dev hrz_dev; /* macros for use later */ #define BUF_PTR(cbptr) ((cbptr) - (cell_buf *) 0) #define INTERESTING_INTERRUPTS \ (RX_DATA_AV | RX_DISABLED | TX_BUS_MASTER_COMPLETE | RX_BUS_MASTER_COMPLETE) // 190 cells by default (192 TX buffers - 2 elbow room, see docs) #define TX_AAL5_LIMIT (190*ATM_CELL_PAYLOAD-ATM_AAL5_TRAILER) // 9112 // Have enough RX buffers (unless we allow other buffer splits) #define RX_AAL5_LIMIT ATM_MAX_AAL5_PDU /* multi-statement macro protector */ #define DW(x) do{ x } while(0) #define HRZ_DEV(atm_dev) ((hrz_dev *) (atm_dev)->dev_data) #define HRZ_VCC(atm_vcc) ((hrz_vcc *) (atm_vcc)->dev_data) /* Turn the LEDs on and off */ // The LEDs bits are upside down in that setting the bit in the debug // register will turn the appropriate LED off. #define YELLOW_LED DEBUG_BIT_0 #define GREEN_LED DEBUG_BIT_1 #define YELLOW_LED_OE DEBUG_BIT_0_OE #define GREEN_LED_OE DEBUG_BIT_1_OE #define GREEN_LED_OFF(dev) \ wr_regl (dev, CONTROL_0_REG, rd_regl (dev, CONTROL_0_REG) | GREEN_LED) #define GREEN_LED_ON(dev) \ wr_regl (dev, CONTROL_0_REG, rd_regl (dev, CONTROL_0_REG) &~ GREEN_LED) #define YELLOW_LED_OFF(dev) \ wr_regl (dev, CONTROL_0_REG, rd_regl (dev, CONTROL_0_REG) | YELLOW_LED) #define YELLOW_LED_ON(dev) \ wr_regl (dev, CONTROL_0_REG, rd_regl (dev, CONTROL_0_REG) &~ YELLOW_LED) typedef enum { round_up, round_down, round_nearest } rounding; #endif /* DRIVER_ATM_HORIZON_H */
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