/* SPDX-License-Identifier: GPL-2.0 */
/*
* nicstar.h
*
* Header file for the nicstar device driver.
*
* Author: Rui Prior (rprior@inescn.pt)
* PowerPC support by Jay Talbott (jay_talbott@mcg.mot.com) April 1999
*
* (C) INESC 1998
*/
#ifndef _LINUX_NICSTAR_H_
#define _LINUX_NICSTAR_H_
/* Includes */
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/idr.h>
#include <linux/uio.h>
#include <linux/skbuff.h>
#include <linux/atmdev.h>
#include <linux/atm_nicstar.h>
/* Options */
#define NS_MAX_CARDS 4 /* Maximum number of NICStAR based cards
controlled by the device driver. Must
be <= 5 */
#undef RCQ_SUPPORT /* Do not define this for now */
#define NS_TST_NUM_ENTRIES 2340 /* + 1 for return */
#define NS_TST_RESERVED 340 /* N. entries reserved for UBR/ABR/VBR */
#define NS_SMBUFSIZE 48 /* 48, 96, 240 or 2048 */
#define NS_LGBUFSIZE 16384 /* 2048, 4096, 8192 or 16384 */
#define NS_RSQSIZE 8192 /* 2048, 4096 or 8192 */
#define NS_VPIBITS 2 /* 0, 1, 2, or 8 */
#define NS_MAX_RCTSIZE 4096 /* Number of entries. 4096 or 16384.
Define 4096 only if (all) your card(s)
have 32K x 32bit SRAM, in which case
setting this to 16384 will just waste a
lot of memory.
Setting this to 4096 for a card with
128K x 32bit SRAM will limit the maximum
VCI. */
/*#define NS_PCI_LATENCY 64*//* Must be a multiple of 32 */
/* Number of buffers initially allocated */
#define NUM_SB 32 /* Must be even */
#define NUM_LB 24 /* Must be even */
#define NUM_HB 8 /* Pre-allocated huge buffers */
#define NUM_IOVB 48 /* Iovec buffers */
/* Lower level for count of buffers */
#define MIN_SB 8 /* Must be even */
#define MIN_LB 8 /* Must be even */
#define MIN_HB 6
#define MIN_IOVB 8
/* Upper level for count of buffers */
#define MAX_SB 64 /* Must be even, <= 508 */
#define MAX_LB 48 /* Must be even, <= 508 */
#define MAX_HB 10
#define MAX_IOVB 80
/* These are the absolute maximum allowed for the ioctl() */
#define TOP_SB 256 /* Must be even, <= 508 */
#define TOP_LB 128 /* Must be even, <= 508 */
#define TOP_HB 64
#define TOP_IOVB 256
#define MAX_TBD_PER_VC 1 /* Number of TBDs before a TSR */
#define MAX_TBD_PER_SCQ 10 /* Only meaningful for variable rate SCQs */
#undef ENABLE_TSQFIE
#define SCQFULL_TIMEOUT (5 * HZ)
#define NS_POLL_PERIOD (HZ)
#define PCR_TOLERANCE (1 .0001 )
/* ESI stuff */
#define NICSTAR_EPROM_MAC_ADDR_OFFSET 0 x6C
#define NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT 0 xF6
/* #defines */
#define NS_IOREMAP_SIZE 4096
/*
* BUF_XX distinguish the Rx buffers depending on their (small/large) size.
* BUG_SM and BUG_LG are both used by the driver and the device.
* BUF_NONE is only used by the driver.
*/
#define BUF_SM 0 x00000000 /* These two are used for push_rxbufs() */
#define BUF_LG 0 x00000001 /* CMD, Write_FreeBufQ, LBUF bit */
#define BUF_NONE 0 xffffffff /* Software only: */
#define NS_HBUFSIZE 65568 /* Size of max. AAL5 PDU */
#define NS_MAX_IOVECS (2 + (65568 - NS_SMBUFSIZE) / \
(NS_LGBUFSIZE - (NS_LGBUFSIZE % 48 )))
#define NS_IOVBUFSIZE (NS_MAX_IOVECS * (sizeof (struct iovec)))
#define NS_SMBUFSIZE_USABLE (NS_SMBUFSIZE - NS_SMBUFSIZE % 48 )
#define NS_LGBUFSIZE_USABLE (NS_LGBUFSIZE - NS_LGBUFSIZE % 48 )
#define NS_AAL0_HEADER (ATM_AAL0_SDU - ATM_CELL_PAYLOAD) /* 4 bytes */
#define NS_SMSKBSIZE (NS_SMBUFSIZE + NS_AAL0_HEADER)
#define NS_LGSKBSIZE (NS_SMBUFSIZE + NS_LGBUFSIZE)
/* NICStAR structures located in host memory */
/*
* RSQ - Receive Status Queue
*
* Written by the NICStAR, read by the device driver.
*/
typedef struct ns_rsqe {
u32 word_1;
u32 buffer_handle;
u32 final_aal5_crc32;
u32 word_4;
} ns_rsqe;
#define ns_rsqe_vpi(ns_rsqep) \
((le32_to_cpu((ns_rsqep)->word_1) & 0 x00FF0000) >> 16 )
#define ns_rsqe_vci(ns_rsqep) \
(le32_to_cpu((ns_rsqep)->word_1) & 0 x0000FFFF)
#define NS_RSQE_VALID 0 x80000000
#define NS_RSQE_NZGFC 0 x00004000
#define NS_RSQE_EOPDU 0 x00002000
#define NS_RSQE_BUFSIZE 0 x00001000
#define NS_RSQE_CONGESTION 0 x00000800
#define NS_RSQE_CLP 0 x00000400
#define NS_RSQE_CRCERR 0 x00000200
#define NS_RSQE_BUFSIZE_SM 0 x00000000
#define NS_RSQE_BUFSIZE_LG 0 x00001000
#define ns_rsqe_valid(ns_rsqep) \
(le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_VALID)
#define ns_rsqe_nzgfc(ns_rsqep) \
(le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_NZGFC)
#define ns_rsqe_eopdu(ns_rsqep) \
(le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_EOPDU)
#define ns_rsqe_bufsize(ns_rsqep) \
(le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_BUFSIZE)
#define ns_rsqe_congestion(ns_rsqep) \
(le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_CONGESTION)
#define ns_rsqe_clp(ns_rsqep) \
(le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_CLP)
#define ns_rsqe_crcerr(ns_rsqep) \
(le32_to_cpu((ns_rsqep)->word_4) & NS_RSQE_CRCERR)
#define ns_rsqe_cellcount(ns_rsqep) \
(le32_to_cpu((ns_rsqep)->word_4) & 0 x000001FF)
#define ns_rsqe_init(ns_rsqep) \
((ns_rsqep)->word_4 = cpu_to_le32(0 x00000000))
#define NS_RSQ_NUM_ENTRIES (NS_RSQSIZE / 16 )
#define NS_RSQ_ALIGNMENT NS_RSQSIZE
/*
* RCQ - Raw Cell Queue
*
* Written by the NICStAR, read by the device driver.
*/
typedef struct cell_payload {
u32 word[12 ];
} cell_payload;
typedef struct ns_rcqe {
u32 word_1;
u32 word_2;
u32 word_3;
u32 word_4;
cell_payload payload;
} ns_rcqe;
#define NS_RCQE_SIZE 64 /* bytes */
#define ns_rcqe_islast(ns_rcqep) \
(le32_to_cpu((ns_rcqep)->word_2) != 0 x00000000)
#define ns_rcqe_cellheader(ns_rcqep) \
(le32_to_cpu((ns_rcqep)->word_1))
#define ns_rcqe_nextbufhandle(ns_rcqep) \
(le32_to_cpu((ns_rcqep)->word_2))
/*
* SCQ - Segmentation Channel Queue
*
* Written by the device driver, read by the NICStAR.
*/
typedef struct ns_scqe {
u32 word_1;
u32 word_2;
u32 word_3;
u32 word_4;
} ns_scqe;
/* NOTE: SCQ entries can be either a TBD (Transmit Buffer Descriptors)
or TSR (Transmit Status Requests) */
#define NS_SCQE_TYPE_TBD 0 x00000000
#define NS_SCQE_TYPE_TSR 0 x80000000
#define NS_TBD_EOPDU 0 x40000000
#define NS_TBD_AAL0 0 x00000000
#define NS_TBD_AAL34 0 x04000000
#define NS_TBD_AAL5 0 x08000000
#define NS_TBD_VPI_MASK 0 x0FF00000
#define NS_TBD_VCI_MASK 0 x000FFFF0
#define NS_TBD_VC_MASK (NS_TBD_VPI_MASK | NS_TBD_VCI_MASK)
#define NS_TBD_VPI_SHIFT 20
#define NS_TBD_VCI_SHIFT 4
#define ns_tbd_mkword_1(flags, m, n, buflen) \
(cpu_to_le32((flags) | (m) << 23 | (n) << 16 | (buflen)))
#define ns_tbd_mkword_1_novbr(flags, buflen) \
(cpu_to_le32((flags) | (buflen) | 0 x00810000))
#define ns_tbd_mkword_3(control, pdulen) \
(cpu_to_le32((control) << 16 | (pdulen)))
#define ns_tbd_mkword_4(gfc, vpi, vci, pt, clp) \
(cpu_to_le32((gfc) << 28 | (vpi) << 20 | (vci) << 4 | (pt) << 1 | (clp)))
#define NS_TSR_INTENABLE 0 x20000000
#define NS_TSR_SCDISVBR 0 xFFFF /* Use as scdi for VBR SCD */
#define ns_tsr_mkword_1(flags) \
(cpu_to_le32(NS_SCQE_TYPE_TSR | (flags)))
#define ns_tsr_mkword_2(scdi, scqi) \
(cpu_to_le32((scdi) << 16 | 0 x00008000 | (scqi)))
#define ns_scqe_is_tsr(ns_scqep) \
(le32_to_cpu((ns_scqep)->word_1) & NS_SCQE_TYPE_TSR)
#define VBR_SCQ_NUM_ENTRIES 512
#define VBR_SCQSIZE 8192
#define CBR_SCQ_NUM_ENTRIES 64
#define CBR_SCQSIZE 1024
#define NS_SCQE_SIZE 16
/*
* TSQ - Transmit Status Queue
*
* Written by the NICStAR, read by the device driver.
*/
typedef struct ns_tsi {
u32 word_1;
u32 word_2;
} ns_tsi;
/* NOTE: The first word can be a status word copied from the TSR which
originated the TSI, or a timer overflow indicator. In this last
case, the value of the first word is all zeroes. */
#define NS_TSI_EMPTY 0 x80000000
#define NS_TSI_TIMESTAMP_MASK 0 x00FFFFFF
#define ns_tsi_isempty(ns_tsip) \
(le32_to_cpu((ns_tsip)->word_2) & NS_TSI_EMPTY)
#define ns_tsi_gettimestamp(ns_tsip) \
(le32_to_cpu((ns_tsip)->word_2) & NS_TSI_TIMESTAMP_MASK)
#define ns_tsi_init(ns_tsip) \
((ns_tsip)->word_2 = cpu_to_le32(NS_TSI_EMPTY))
#define NS_TSQSIZE 8192
#define NS_TSQ_NUM_ENTRIES 1024
#define NS_TSQ_ALIGNMENT 8192
#define NS_TSI_SCDISVBR NS_TSR_SCDISVBR
#define ns_tsi_tmrof(ns_tsip) \
(le32_to_cpu((ns_tsip)->word_1) == 0 x00000000)
#define ns_tsi_getscdindex(ns_tsip) \
((le32_to_cpu((ns_tsip)->word_1) & 0 xFFFF0000) >> 16 )
#define ns_tsi_getscqpos(ns_tsip) \
(le32_to_cpu((ns_tsip)->word_1) & 0 x00007FFF)
/* NICStAR structures located in local SRAM */
/*
* RCT - Receive Connection Table
*
* Written by both the NICStAR and the device driver.
*/
typedef struct ns_rcte {
u32 word_1;
u32 buffer_handle;
u32 dma_address;
u32 aal5_crc32;
} ns_rcte;
#define NS_RCTE_BSFB 0 x00200000 /* Rev. D only */
#define NS_RCTE_NZGFC 0 x00100000
#define NS_RCTE_CONNECTOPEN 0 x00080000
#define NS_RCTE_AALMASK 0 x00070000
#define NS_RCTE_AAL0 0 x00000000
#define NS_RCTE_AAL34 0 x00010000
#define NS_RCTE_AAL5 0 x00020000
#define NS_RCTE_RCQ 0 x00030000
#define NS_RCTE_RAWCELLINTEN 0 x00008000
#define NS_RCTE_RXCONSTCELLADDR 0 x00004000
#define NS_RCTE_BUFFVALID 0 x00002000
#define NS_RCTE_FBDSIZE 0 x00001000
#define NS_RCTE_EFCI 0 x00000800
#define NS_RCTE_CLP 0 x00000400
#define NS_RCTE_CRCERROR 0 x00000200
#define NS_RCTE_CELLCOUNT_MASK 0 x000001FF
#define NS_RCTE_FBDSIZE_SM 0 x00000000
#define NS_RCTE_FBDSIZE_LG 0 x00001000
#define NS_RCT_ENTRY_SIZE 4 /* Number of dwords */
/* NOTE: We could make macros to contruct the first word of the RCTE,
but that doesn't seem to make much sense... */
/*
* FBD - Free Buffer Descriptor
*
* Written by the device driver using via the command register.
*/
typedef struct ns_fbd {
u32 buffer_handle;
u32 dma_address;
} ns_fbd;
/*
* TST - Transmit Schedule Table
*
* Written by the device driver.
*/
typedef u32 ns_tste;
#define NS_TST_OPCODE_MASK 0 x60000000
#define NS_TST_OPCODE_NULL 0 x00000000 /* Insert null cell */
#define NS_TST_OPCODE_FIXED 0 x20000000 /* Cell from a fixed rate channel */
#define NS_TST_OPCODE_VARIABLE 0 x40000000
#define NS_TST_OPCODE_END 0 x60000000 /* Jump */
#define ns_tste_make(opcode, sramad) (opcode | sramad)
/* NOTE:
- When the opcode is FIXED, sramad specifies the SRAM address of the
SCD for that fixed rate channel.
- When the opcode is END, sramad specifies the SRAM address of the
location of the next TST entry to read.
*/
/*
* SCD - Segmentation Channel Descriptor
*
* Written by both the device driver and the NICStAR
*/
typedef struct ns_scd {
u32 word_1;
u32 word_2;
u32 partial_aal5_crc;
u32 reserved;
ns_scqe cache_a;
ns_scqe cache_b;
} ns_scd;
#define NS_SCD_BASE_MASK_VAR 0 xFFFFE000 /* Variable rate */
#define NS_SCD_BASE_MASK_FIX 0 xFFFFFC00 /* Fixed rate */
#define NS_SCD_TAIL_MASK_VAR 0 x00001FF0
#define NS_SCD_TAIL_MASK_FIX 0 x000003F0
#define NS_SCD_HEAD_MASK_VAR 0 x00001FF0
#define NS_SCD_HEAD_MASK_FIX 0 x000003F0
#define NS_SCD_XMITFOREVER 0 x02000000
/* NOTE: There are other fields in word 2 of the SCD, but as they should
not be needed in the device driver they are not defined here. */
/* NICStAR local SRAM memory map */
#define NS_RCT 0 x00000
#define NS_RCT_32_END 0 x03FFF
#define NS_RCT_128_END 0 x0FFFF
#define NS_UNUSED_32 0 x04000
#define NS_UNUSED_128 0 x10000
#define NS_UNUSED_END 0 x1BFFF
#define NS_TST_FRSCD 0 x1C000
#define NS_TST_FRSCD_END 0 x1E7DB
#define NS_VRSCD2 0 x1E7DC
#define NS_VRSCD2_END 0 x1E7E7
#define NS_VRSCD1 0 x1E7E8
#define NS_VRSCD1_END 0 x1E7F3
#define NS_VRSCD0 0 x1E7F4
#define NS_VRSCD0_END 0 x1E7FF
#define NS_RXFIFO 0 x1E800
#define NS_RXFIFO_END 0 x1F7FF
#define NS_SMFBQ 0 x1F800
#define NS_SMFBQ_END 0 x1FBFF
#define NS_LGFBQ 0 x1FC00
#define NS_LGFBQ_END 0 x1FFFF
/* NISCtAR operation registers */
/* See Section 3.4 of `IDT77211 NICStAR User Manual' from www.idt.com */
enum ns_regs {
DR0 = 0 x00, /* Data Register 0 R/W */
DR1 = 0 x04, /* Data Register 1 W */
DR2 = 0 x08, /* Data Register 2 W */
DR3 = 0 x0C, /* Data Register 3 W */
CMD = 0 x10, /* Command W */
CFG = 0 x14, /* Configuration R/W */
STAT = 0 x18, /* Status R/W */
RSQB = 0 x1C, /* Receive Status Queue Base W */
RSQT = 0 x20, /* Receive Status Queue Tail R */
RSQH = 0 x24, /* Receive Status Queue Head W */
CDC = 0 x28, /* Cell Drop Counter R/clear */
VPEC = 0 x2C, /* VPI/VCI Lookup Error Count R/clear */
ICC = 0 x30, /* Invalid Cell Count R/clear */
RAWCT = 0 x34, /* Raw Cell Tail R */
TMR = 0 x38, /* Timer R */
TSTB = 0 x3C, /* Transmit Schedule Table Base R/W */
TSQB = 0 x40, /* Transmit Status Queue Base W */
TSQT = 0 x44, /* Transmit Status Queue Tail R */
TSQH = 0 x48, /* Transmit Status Queue Head W */
GP = 0 x4C, /* General Purpose R/W */
VPM = 0 x50 /* VPI/VCI Mask W */
};
/* NICStAR commands issued to the CMD register */
/* Top 4 bits are command opcode, lower 28 are parameters. */
#define NS_CMD_NO_OPERATION 0 x00000000
/* params always 0 */
#define NS_CMD_OPENCLOSE_CONNECTION 0 x20000000
/* b19{1=open,0=close} b18-2{SRAM addr} */
#define NS_CMD_WRITE_SRAM 0 x40000000
/* b18-2{SRAM addr} b1-0{burst size} */
#define NS_CMD_READ_SRAM 0 x50000000
/* b18-2{SRAM addr} */
#define NS_CMD_WRITE_FREEBUFQ 0 x60000000
/* b0{large buf indicator} */
#define NS_CMD_READ_UTILITY 0 x80000000
/* b8{1=select UTL_CS1} b9{1=select UTL_CS0} b7-0{bus addr} */
#define NS_CMD_WRITE_UTILITY 0 x90000000
/* b8{1=select UTL_CS1} b9{1=select UTL_CS0} b7-0{bus addr} */
#define NS_CMD_OPEN_CONNECTION (NS_CMD_OPENCLOSE_CONNECTION | 0 x00080000)
#define NS_CMD_CLOSE_CONNECTION NS_CMD_OPENCLOSE_CONNECTION
/* NICStAR configuration bits */
#define NS_CFG_SWRST 0 x80000000 /* Software Reset */
#define NS_CFG_RXPATH 0 x20000000 /* Receive Path Enable */
#define NS_CFG_SMBUFSIZE_MASK 0 x18000000 /* Small Receive Buffer Size */
#define NS_CFG_LGBUFSIZE_MASK 0 x06000000 /* Large Receive Buffer Size */
#define NS_CFG_EFBIE 0 x01000000 /* Empty Free Buffer Queue
Interrupt Enable */
#define NS_CFG_RSQSIZE_MASK 0 x00C00000 /* Receive Status Queue Size */
#define NS_CFG_ICACCEPT 0 x00200000 /* Invalid Cell Accept */
#define NS_CFG_IGNOREGFC 0 x00100000 /* Ignore General Flow Control */
#define NS_CFG_VPIBITS_MASK 0 x000C0000 /* VPI/VCI Bits Size Select */
#define NS_CFG_RCTSIZE_MASK 0 x00030000 /* Receive Connection Table Size */
#define NS_CFG_VCERRACCEPT 0 x00008000 /* VPI/VCI Error Cell Accept */
#define NS_CFG_RXINT_MASK 0 x00007000 /* End of Receive PDU Interrupt
Handling */
#define NS_CFG_RAWIE 0 x00000800 /* Raw Cell Qu' Interrupt Enable */
#define NS_CFG_RSQAFIE 0 x00000400 /* Receive Queue Almost Full
Interrupt Enable */
#define NS_CFG_RXRM 0 x00000200 /* Receive RM Cells */
#define NS_CFG_TMRROIE 0 x00000080 /* Timer Roll Over Interrupt
Enable */
#define NS_CFG_TXEN 0 x00000020 /* Transmit Operation Enable */
#define NS_CFG_TXIE 0 x00000010 /* Transmit Status Interrupt
Enable */
#define NS_CFG_TXURIE 0 x00000008 /* Transmit Under-run Interrupt
Enable */
#define NS_CFG_UMODE 0 x00000004 /* Utopia Mode (cell/byte) Select */
#define NS_CFG_TSQFIE 0 x00000002 /* Transmit Status Queue Full
Interrupt Enable */
#define NS_CFG_PHYIE 0 x00000001 /* PHY Interrupt Enable */
#define NS_CFG_SMBUFSIZE_48 0 x00000000
#define NS_CFG_SMBUFSIZE_96 0 x08000000
#define NS_CFG_SMBUFSIZE_240 0 x10000000
#define NS_CFG_SMBUFSIZE_2048 0 x18000000
#define NS_CFG_LGBUFSIZE_2048 0 x00000000
#define NS_CFG_LGBUFSIZE_4096 0 x02000000
#define NS_CFG_LGBUFSIZE_8192 0 x04000000
#define NS_CFG_LGBUFSIZE_16384 0 x06000000
#define NS_CFG_RSQSIZE_2048 0 x00000000
#define NS_CFG_RSQSIZE_4096 0 x00400000
#define NS_CFG_RSQSIZE_8192 0 x00800000
#define NS_CFG_VPIBITS_0 0 x00000000
#define NS_CFG_VPIBITS_1 0 x00040000
#define NS_CFG_VPIBITS_2 0 x00080000
#define NS_CFG_VPIBITS_8 0 x000C0000
#define NS_CFG_RCTSIZE_4096_ENTRIES 0 x00000000
#define NS_CFG_RCTSIZE_8192_ENTRIES 0 x00010000
#define NS_CFG_RCTSIZE_16384_ENTRIES 0 x00020000
#define NS_CFG_RXINT_NOINT 0 x00000000
#define NS_CFG_RXINT_NODELAY 0 x00001000
#define NS_CFG_RXINT_314US 0 x00002000
#define NS_CFG_RXINT_624US 0 x00003000
#define NS_CFG_RXINT_899US 0 x00004000
/* NICStAR STATus bits */
#define NS_STAT_SFBQC_MASK 0 xFF000000 /* hi 8 bits Small Buffer Queue Count */
#define NS_STAT_LFBQC_MASK 0 x00FF0000 /* hi 8 bits Large Buffer Queue Count */
#define NS_STAT_TSIF 0 x00008000 /* Transmit Status Queue Indicator */
#define NS_STAT_TXICP 0 x00004000 /* Transmit Incomplete PDU */
#define NS_STAT_TSQF 0 x00001000 /* Transmit Status Queue Full */
#define NS_STAT_TMROF 0 x00000800 /* Timer Overflow */
#define NS_STAT_PHYI 0 x00000400 /* PHY Device Interrupt */
#define NS_STAT_CMDBZ 0 x00000200 /* Command Busy */
#define NS_STAT_SFBQF 0 x00000100 /* Small Buffer Queue Full */
#define NS_STAT_LFBQF 0 x00000080 /* Large Buffer Queue Full */
#define NS_STAT_RSQF 0 x00000040 /* Receive Status Queue Full */
#define NS_STAT_EOPDU 0 x00000020 /* End of PDU */
#define NS_STAT_RAWCF 0 x00000010 /* Raw Cell Flag */
#define NS_STAT_SFBQE 0 x00000008 /* Small Buffer Queue Empty */
#define NS_STAT_LFBQE 0 x00000004 /* Large Buffer Queue Empty */
#define NS_STAT_RSQAF 0 x00000002 /* Receive Status Queue Almost Full */
#define ns_stat_sfbqc_get(stat) (((stat) & NS_STAT_SFBQC_MASK) >> 23 )
#define ns_stat_lfbqc_get(stat) (((stat) & NS_STAT_LFBQC_MASK) >> 15 )
/* #defines which depend on other #defines */
#define NS_TST0 NS_TST_FRSCD
#define NS_TST1 (NS_TST_FRSCD + NS_TST_NUM_ENTRIES + 1 )
#define NS_FRSCD (NS_TST1 + NS_TST_NUM_ENTRIES + 1 )
#define NS_FRSCD_SIZE 12 /* 12 dwords */
#define NS_FRSCD_NUM ((NS_TST_FRSCD_END + 1 - NS_FRSCD) / NS_FRSCD_SIZE)
#if (NS_SMBUFSIZE == 48 )
#define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_48
#elif (NS_SMBUFSIZE == 96 )
#define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_96
#elif (NS_SMBUFSIZE == 240 )
#define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_240
#elif (NS_SMBUFSIZE == 2048 )
#define NS_CFG_SMBUFSIZE NS_CFG_SMBUFSIZE_2048
#else
#error NS_SMBUFSIZE is incorrect in nicstar.h
#endif /* NS_SMBUFSIZE */
#if (NS_LGBUFSIZE == 2048 )
#define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_2048
#elif (NS_LGBUFSIZE == 4096 )
#define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_4096
#elif (NS_LGBUFSIZE == 8192 )
#define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_8192
#elif (NS_LGBUFSIZE == 16384 )
#define NS_CFG_LGBUFSIZE NS_CFG_LGBUFSIZE_16384
#else
#error NS_LGBUFSIZE is incorrect in nicstar.h
#endif /* NS_LGBUFSIZE */
#if (NS_RSQSIZE == 2048 )
#define NS_CFG_RSQSIZE NS_CFG_RSQSIZE_2048
#elif (NS_RSQSIZE == 4096 )
#define NS_CFG_RSQSIZE NS_CFG_RSQSIZE_4096
#elif (NS_RSQSIZE == 8192 )
#define NS_CFG_RSQSIZE NS_CFG_RSQSIZE_8192
#else
#error NS_RSQSIZE is incorrect in nicstar.h
#endif /* NS_RSQSIZE */
#if (NS_VPIBITS == 0 )
#define NS_CFG_VPIBITS NS_CFG_VPIBITS_0
#elif (NS_VPIBITS == 1 )
#define NS_CFG_VPIBITS NS_CFG_VPIBITS_1
#elif (NS_VPIBITS == 2 )
#define NS_CFG_VPIBITS NS_CFG_VPIBITS_2
#elif (NS_VPIBITS == 8 )
#define NS_CFG_VPIBITS NS_CFG_VPIBITS_8
#else
#error NS_VPIBITS is incorrect in nicstar.h
#endif /* NS_VPIBITS */
#ifdef RCQ_SUPPORT
#define NS_CFG_RAWIE_OPT NS_CFG_RAWIE
#else
#define NS_CFG_RAWIE_OPT 0 x00000000
#endif /* RCQ_SUPPORT */
#ifdef ENABLE_TSQFIE
#define NS_CFG_TSQFIE_OPT NS_CFG_TSQFIE
#else
#define NS_CFG_TSQFIE_OPT 0 x00000000
#endif /* ENABLE_TSQFIE */
/* PCI stuff */
#ifndef PCI_VENDOR_ID_IDT
#define PCI_VENDOR_ID_IDT 0 x111D
#endif /* PCI_VENDOR_ID_IDT */
#ifndef PCI_DEVICE_ID_IDT_IDT77201
#define PCI_DEVICE_ID_IDT_IDT77201 0 x0001
#endif /* PCI_DEVICE_ID_IDT_IDT77201 */
/* Device driver structures */
struct ns_skb_prv {
u32 buf_type; /* BUF_SM/BUF_LG/BUF_NONE */
u32 dma;
int iovcnt;
};
#define NS_PRV_BUFTYPE(skb) \
(((struct ns_skb_prv *)(ATM_SKB(skb)+1 ))->buf_type)
#define NS_PRV_DMA(skb) \
(((struct ns_skb_prv *)(ATM_SKB(skb)+1 ))->dma)
#define NS_PRV_IOVCNT(skb) \
(((struct ns_skb_prv *)(ATM_SKB(skb)+1 ))->iovcnt)
typedef struct tsq_info {
void *org;
dma_addr_t dma;
ns_tsi *base;
ns_tsi *next;
ns_tsi *last;
} tsq_info;
typedef struct scq_info {
void *org;
dma_addr_t dma;
ns_scqe *base;
ns_scqe *last;
ns_scqe *next;
volatile ns_scqe *tail; /* Not related to the nicstar register */
unsigned num_entries;
struct sk_buff **skb; /* Pointer to an array of pointers
to the sk_buffs used for tx */
u32 scd; /* SRAM address of the corresponding
SCD */
int tbd_count; /* Only meaningful on variable rate */
wait_queue_head_t scqfull_waitq;
volatile char full; /* SCQ full indicator */
spinlock_t lock; /* SCQ spinlock */
} scq_info;
typedef struct rsq_info {
void *org;
dma_addr_t dma;
ns_rsqe *base;
ns_rsqe *next;
ns_rsqe *last;
} rsq_info;
typedef struct skb_pool {
volatile int count; /* number of buffers in the queue */
struct sk_buff_head queue;
} skb_pool;
/* NOTE: for small and large buffer pools, the count is not used, as the
actual value used for buffer management is the one read from the
card. */
typedef struct vc_map {
volatile unsigned int tx:1 ; /* TX vc? */
volatile unsigned int rx:1 ; /* RX vc? */
struct atm_vcc *tx_vcc, *rx_vcc;
struct sk_buff *rx_iov; /* RX iovector skb */
scq_info *scq; /* To keep track of the SCQ */
u32 cbr_scd; /* SRAM address of the corresponding
SCD. 0x00000000 for UBR/VBR/ABR */
int tbd_count;
} vc_map;
typedef struct ns_dev {
int index; /* Card ID to the device driver */
int sram_size; /* In k x 32bit words. 32 or 128 */
void __iomem *membase; /* Card's memory base address */
unsigned long max_pcr;
int rct_size; /* Number of entries */
int vpibits;
int vcibits;
struct pci_dev *pcidev;
struct idr idr;
struct atm_dev *atmdev;
tsq_info tsq;
rsq_info rsq;
scq_info *scq0, *scq1, *scq2; /* VBR SCQs */
skb_pool sbpool; /* Small buffers */
skb_pool lbpool; /* Large buffers */
skb_pool hbpool; /* Pre-allocated huge buffers */
skb_pool iovpool; /* iovector buffers */
volatile int efbie; /* Empty free buf. queue int. enabled */
volatile u32 tst_addr; /* SRAM address of the TST in use */
volatile int tst_free_entries;
vc_map vcmap[NS_MAX_RCTSIZE];
vc_map *tste2vc[NS_TST_NUM_ENTRIES];
vc_map *scd2vc[NS_FRSCD_NUM];
buf_nr sbnr;
buf_nr lbnr;
buf_nr hbnr;
buf_nr iovnr;
int sbfqc;
int lbfqc;
struct sk_buff *sm_handle;
u32 sm_addr;
struct sk_buff *lg_handle;
u32 lg_addr;
struct sk_buff *rcbuf; /* Current raw cell buffer */
struct ns_rcqe *rawcell;
u32 rawch; /* Raw cell queue head */
unsigned intcnt; /* Interrupt counter */
spinlock_t int_lock; /* Interrupt lock */
spinlock_t res_lock; /* Card resource lock */
} ns_dev;
/* NOTE: Each tste2vc entry relates a given TST entry to the corresponding
CBR vc. If the entry is not allocated, it must be NULL.
There are two TSTs so the driver can modify them on the fly
without stopping the transmission.
scd2vc allows us to find out unused fixed rate SCDs, because
they must have a NULL pointer here. */
#endif /* _LINUX_NICSTAR_H_ */
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(vorverarbeitet am 2026-06-05)
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