net: atm: remove support for Madge Horizon ATM devices

This driver received nothing but automated fixes since git era begun.
Since it's using virt_to_bus it's unlikely to be used on any modern
platform.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 0 insertions, 492 deletions

diff --git a/drivers/atm/horizon.h b/drivers/atm/horizon.h
deleted file mode 100644
index 7523eba19bad..000000000000
--- a/drivers/atm/horizon.h
+++ /dev/null
@@ -1,492 +0,0 @@
-/* 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 */