diff options
Diffstat (limited to 'drivers/atm/midway.h')
| -rw-r--r-- | drivers/atm/midway.h | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/drivers/atm/midway.h b/drivers/atm/midway.h new file mode 100644 index 000000000..d47307adc --- /dev/null +++ b/drivers/atm/midway.h @@ -0,0 +1,266 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* drivers/atm/midway.h - Efficient Networks Midway (SAR) description */ + +/* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */ + + +#ifndef DRIVERS_ATM_MIDWAY_H +#define DRIVERS_ATM_MIDWAY_H + + +#define NR_VCI 1024 /* number of VCIs */ +#define NR_VCI_LD 10 /* log2(NR_VCI) */ +#define NR_DMA_RX 512 /* RX DMA queue entries */ +#define NR_DMA_TX 512 /* TX DMA queue entries */ +#define NR_SERVICE NR_VCI /* service list size */ +#define NR_CHAN 8 /* number of TX channels */ +#define TS_CLOCK 25000000 /* traffic shaper clock (cell/sec) */ + +#define MAP_MAX_SIZE 0x00400000 /* memory window for max config */ +#define EPROM_SIZE 0x00010000 +#define MEM_VALID 0xffc00000 /* mask base address with this */ +#define PHY_BASE 0x00020000 /* offset of PHY register are */ +#define REG_BASE 0x00040000 /* offset of Midway register area */ +#define RAM_BASE 0x00200000 /* offset of RAM area */ +#define RAM_INCREMENT 0x00020000 /* probe for RAM every 128kB */ + +#define MID_VCI_BASE RAM_BASE +#define MID_DMA_RX_BASE (MID_VCI_BASE+NR_VCI*16) +#define MID_DMA_TX_BASE (MID_DMA_RX_BASE+NR_DMA_RX*8) +#define MID_SERVICE_BASE (MID_DMA_TX_BASE+NR_DMA_TX*8) +#define MID_FREE_BASE (MID_SERVICE_BASE+NR_SERVICE*4) + +#define MAC_LEN 6 /* atm.h */ + +#define MID_MIN_BUF_SIZE (1024) /* 1 kB is minimum */ +#define MID_MAX_BUF_SIZE (128*1024) /* 128 kB is maximum */ + +#define RX_DESCR_SIZE 1 /* RX PDU descr is 1 longword */ +#define TX_DESCR_SIZE 2 /* TX PDU descr is 2 longwords */ +#define AAL5_TRAILER (ATM_AAL5_TRAILER/4) /* AAL5 trailer is 2 longwords */ + +#define TX_GAP 8 /* TX buffer gap (words) */ + +/* + * Midway Reset/ID + * + * All values read-only. Writing to this register resets Midway chip. + */ + +#define MID_RES_ID_MCON 0x00 /* Midway Reset/ID */ + +#define MID_ID 0xf0000000 /* Midway version */ +#define MID_SHIFT 24 +#define MID_MOTHER_ID 0x00000700 /* mother board id */ +#define MID_MOTHER_SHIFT 8 +#define MID_CON_TI 0x00000080 /* 0: normal ctrl; 1: SABRE */ +#define MID_CON_SUNI 0x00000040 /* 0: UTOPIA; 1: SUNI */ +#define MID_CON_V6 0x00000020 /* 0: non-pipel UTOPIA (required iff + !CON_SUNI; 1: UTOPIA */ +#define DAUGHTER_ID 0x0000001f /* daughter board id */ + +/* + * Interrupt Status Acknowledge, Interrupt Status & Interrupt Enable + */ + +#define MID_ISA 0x01 /* Interrupt Status Acknowledge */ +#define MID_IS 0x02 /* Interrupt Status */ +#define MID_IE 0x03 /* Interrupt Enable */ + +#define MID_TX_COMPLETE_7 0x00010000 /* channel N completed a PDU */ +#define MID_TX_COMPLETE_6 0x00008000 /* transmission */ +#define MID_TX_COMPLETE_5 0x00004000 +#define MID_TX_COMPLETE_4 0x00002000 +#define MID_TX_COMPLETE_3 0x00001000 +#define MID_TX_COMPLETE_2 0x00000800 +#define MID_TX_COMPLETE_1 0x00000400 +#define MID_TX_COMPLETE_0 0x00000200 +#define MID_TX_COMPLETE 0x0001fe00 /* any TX */ +#define MID_TX_DMA_OVFL 0x00000100 /* DMA to adapter overflow */ +#define MID_TX_IDENT_MISM 0x00000080 /* TX: ident mismatch => halted */ +#define MID_DMA_LERR_ACK 0x00000040 /* LERR - SBus ? */ +#define MID_DMA_ERR_ACK 0x00000020 /* DMA error */ +#define MID_RX_DMA_COMPLETE 0x00000010 /* DMA to host done */ +#define MID_TX_DMA_COMPLETE 0x00000008 /* DMA from host done */ +#define MID_SERVICE 0x00000004 /* something in service list */ +#define MID_SUNI_INT 0x00000002 /* interrupt from SUNI */ +#define MID_STAT_OVFL 0x00000001 /* statistics overflow */ + +/* + * Master Control/Status + */ + +#define MID_MC_S 0x04 + +#define MID_INT_SELECT 0x000001C0 /* Interrupt level (000: off) */ +#define MID_INT_SEL_SHIFT 6 +#define MID_TX_LOCK_MODE 0x00000020 /* 0: streaming; 1: TX ovfl->lock */ +#define MID_DMA_ENABLE 0x00000010 /* R: 0: disable; 1: enable + W: 0: no change; 1: enable */ +#define MID_TX_ENABLE 0x00000008 /* R: 0: TX disabled; 1: enabled + W: 0: no change; 1: enable */ +#define MID_RX_ENABLE 0x00000004 /* like TX */ +#define MID_WAIT_1MS 0x00000002 /* R: 0: timer not running; 1: running + W: 0: no change; 1: no interrupts + for 1 ms */ +#define MID_WAIT_500US 0x00000001 /* like WAIT_1MS, but 0.5 ms */ + +/* + * Statistics + * + * Cleared when reading. + */ + +#define MID_STAT 0x05 + +#define MID_VCI_TRASH 0xFFFF0000 /* trashed cells because of VCI mode */ +#define MID_VCI_TRASH_SHIFT 16 +#define MID_OVFL_TRASH 0x0000FFFF /* trashed cells because of overflow */ + +/* + * Address registers + */ + +#define MID_SERV_WRITE 0x06 /* free pos in service area (R, 10 bits) */ +#define MID_DMA_ADDR 0x07 /* virtual DMA address (R, 32 bits) */ +#define MID_DMA_WR_RX 0x08 /* (RW, 9 bits) */ +#define MID_DMA_RD_RX 0x09 +#define MID_DMA_WR_TX 0x0A +#define MID_DMA_RD_TX 0x0B + +/* + * Transmit Place Registers (0x10+4*channel) + */ + +#define MID_TX_PLACE(c) (0x10+4*(c)) + +#define MID_SIZE 0x00003800 /* size, N*256 x 32 bit */ +#define MID_SIZE_SHIFT 11 +#define MID_LOCATION 0x000007FF /* location in adapter memory (word) */ + +#define MID_LOC_SKIP 8 /* 8 bits of location are always zero + (applies to all uses of location) */ + +/* + * Transmit ReadPtr Registers (0x11+4*channel) + */ + +#define MID_TX_RDPTR(c) (0x11+4*(c)) + +#define MID_READ_PTR 0x00007FFF /* next word for PHY */ + +/* + * Transmit DescrStart Registers (0x12+4*channel) + */ + +#define MID_TX_DESCRSTART(c) (0x12+4*(c)) + +#define MID_DESCR_START 0x00007FFF /* seg buffer being DMAed */ + +#define ENI155_MAGIC 0xa54b872d + +struct midway_eprom { + unsigned char mac[MAC_LEN],inv_mac[MAC_LEN]; + unsigned char pad[36]; + u32 serial,inv_serial; + u32 magic,inv_magic; +}; + + +/* + * VCI table entry + */ + +#define MID_VCI_IN_SERVICE 0x00000001 /* set if VCI is currently in + service list */ +#define MID_VCI_SIZE 0x00038000 /* reassembly buffer size, + 2*<size> kB */ +#define MID_VCI_SIZE_SHIFT 15 +#define MID_VCI_LOCATION 0x1ffc0000 /* buffer location */ +#define MID_VCI_LOCATION_SHIFT 18 +#define MID_VCI_PTI_MODE 0x20000000 /* 0: trash, 1: preserve */ +#define MID_VCI_MODE 0xc0000000 +#define MID_VCI_MODE_SHIFT 30 +#define MID_VCI_READ 0x00007fff +#define MID_VCI_READ_SHIFT 0 +#define MID_VCI_DESCR 0x7fff0000 +#define MID_VCI_DESCR_SHIFT 16 +#define MID_VCI_COUNT 0x000007ff +#define MID_VCI_COUNT_SHIFT 0 +#define MID_VCI_STATE 0x0000c000 +#define MID_VCI_STATE_SHIFT 14 +#define MID_VCI_WRITE 0x7fff0000 +#define MID_VCI_WRITE_SHIFT 16 + +#define MID_MODE_TRASH 0 +#define MID_MODE_RAW 1 +#define MID_MODE_AAL5 2 + +/* + * Reassembly buffer descriptor + */ + +#define MID_RED_COUNT 0x000007ff +#define MID_RED_CRC_ERR 0x00000800 +#define MID_RED_T 0x00001000 +#define MID_RED_CE 0x00010000 +#define MID_RED_CLP 0x01000000 +#define MID_RED_IDEN 0xfe000000 +#define MID_RED_SHIFT 25 + +#define MID_RED_RX_ID 0x1b /* constant identifier */ + +/* + * Segmentation buffer descriptor + */ + +#define MID_SEG_COUNT MID_RED_COUNT +#define MID_SEG_RATE 0x01f80000 +#define MID_SEG_RATE_SHIFT 19 +#define MID_SEG_PR 0x06000000 +#define MID_SEG_PR_SHIFT 25 +#define MID_SEG_AAL5 0x08000000 +#define MID_SEG_ID 0xf0000000 +#define MID_SEG_ID_SHIFT 28 +#define MID_SEG_MAX_RATE 63 + +#define MID_SEG_CLP 0x00000001 +#define MID_SEG_PTI 0x0000000e +#define MID_SEG_PTI_SHIFT 1 +#define MID_SEG_VCI 0x00003ff0 +#define MID_SEG_VCI_SHIFT 4 + +#define MID_SEG_TX_ID 0xb /* constant identifier */ + +/* + * DMA entry + */ + +#define MID_DMA_COUNT 0xffff0000 +#define MID_DMA_COUNT_SHIFT 16 +#define MID_DMA_END 0x00000020 +#define MID_DMA_TYPE 0x0000000f + +#define MID_DT_JK 0x3 +#define MID_DT_WORD 0x0 +#define MID_DT_2W 0x7 +#define MID_DT_4W 0x4 +#define MID_DT_8W 0x5 +#define MID_DT_16W 0x6 +#define MID_DT_2WM 0xf +#define MID_DT_4WM 0xc +#define MID_DT_8WM 0xd +#define MID_DT_16WM 0xe + +/* only for RX*/ +#define MID_DMA_VCI 0x0000ffc0 +#define MID_DMA_VCI_SHIFT 6 + +/* only for TX */ +#define MID_DMA_CHAN 0x000001c0 +#define MID_DMA_CHAN_SHIFT 6 + +#define MID_DT_BYTE 0x1 +#define MID_DT_HWORD 0x2 + +#endif |