diff options
Diffstat (limited to 'drivers/atm/nicstar.h')
| -rw-r--r-- | drivers/atm/nicstar.h | 759 |
1 files changed, 759 insertions, 0 deletions
diff --git a/drivers/atm/nicstar.h b/drivers/atm/nicstar.h new file mode 100644 index 000000000..1b7f1dfc1 --- /dev/null +++ b/drivers/atm/nicstar.h @@ -0,0 +1,759 @@ +/* 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 0x6C +#define NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT 0xF6 + +/* #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 0x00000000 /* These two are used for push_rxbufs() */ +#define BUF_LG 0x00000001 /* CMD, Write_FreeBufQ, LBUF bit */ +#define BUF_NONE 0xffffffff /* 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) & 0x00FF0000) >> 16) +#define ns_rsqe_vci(ns_rsqep) \ + (le32_to_cpu((ns_rsqep)->word_1) & 0x0000FFFF) + +#define NS_RSQE_VALID 0x80000000 +#define NS_RSQE_NZGFC 0x00004000 +#define NS_RSQE_EOPDU 0x00002000 +#define NS_RSQE_BUFSIZE 0x00001000 +#define NS_RSQE_CONGESTION 0x00000800 +#define NS_RSQE_CLP 0x00000400 +#define NS_RSQE_CRCERR 0x00000200 + +#define NS_RSQE_BUFSIZE_SM 0x00000000 +#define NS_RSQE_BUFSIZE_LG 0x00001000 + +#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) & 0x000001FF) +#define ns_rsqe_init(ns_rsqep) \ + ((ns_rsqep)->word_4 = cpu_to_le32(0x00000000)) + +#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) != 0x00000000) +#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 0x00000000 +#define NS_SCQE_TYPE_TSR 0x80000000 + +#define NS_TBD_EOPDU 0x40000000 +#define NS_TBD_AAL0 0x00000000 +#define NS_TBD_AAL34 0x04000000 +#define NS_TBD_AAL5 0x08000000 + +#define NS_TBD_VPI_MASK 0x0FF00000 +#define NS_TBD_VCI_MASK 0x000FFFF0 +#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) | 0x00810000)) +#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 0x20000000 + +#define NS_TSR_SCDISVBR 0xFFFF /* 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 | 0x00008000 | (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 0x80000000 +#define NS_TSI_TIMESTAMP_MASK 0x00FFFFFF + +#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) == 0x00000000) +#define ns_tsi_getscdindex(ns_tsip) \ + ((le32_to_cpu((ns_tsip)->word_1) & 0xFFFF0000) >> 16) +#define ns_tsi_getscqpos(ns_tsip) \ + (le32_to_cpu((ns_tsip)->word_1) & 0x00007FFF) + +/* 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 0x00200000 /* Rev. D only */ +#define NS_RCTE_NZGFC 0x00100000 +#define NS_RCTE_CONNECTOPEN 0x00080000 +#define NS_RCTE_AALMASK 0x00070000 +#define NS_RCTE_AAL0 0x00000000 +#define NS_RCTE_AAL34 0x00010000 +#define NS_RCTE_AAL5 0x00020000 +#define NS_RCTE_RCQ 0x00030000 +#define NS_RCTE_RAWCELLINTEN 0x00008000 +#define NS_RCTE_RXCONSTCELLADDR 0x00004000 +#define NS_RCTE_BUFFVALID 0x00002000 +#define NS_RCTE_FBDSIZE 0x00001000 +#define NS_RCTE_EFCI 0x00000800 +#define NS_RCTE_CLP 0x00000400 +#define NS_RCTE_CRCERROR 0x00000200 +#define NS_RCTE_CELLCOUNT_MASK 0x000001FF + +#define NS_RCTE_FBDSIZE_SM 0x00000000 +#define NS_RCTE_FBDSIZE_LG 0x00001000 + +#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 0x60000000 + +#define NS_TST_OPCODE_NULL 0x00000000 /* Insert null cell */ +#define NS_TST_OPCODE_FIXED 0x20000000 /* Cell from a fixed rate channel */ +#define NS_TST_OPCODE_VARIABLE 0x40000000 +#define NS_TST_OPCODE_END 0x60000000 /* 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 0xFFFFE000 /* Variable rate */ +#define NS_SCD_BASE_MASK_FIX 0xFFFFFC00 /* Fixed rate */ +#define NS_SCD_TAIL_MASK_VAR 0x00001FF0 +#define NS_SCD_TAIL_MASK_FIX 0x000003F0 +#define NS_SCD_HEAD_MASK_VAR 0x00001FF0 +#define NS_SCD_HEAD_MASK_FIX 0x000003F0 +#define NS_SCD_XMITFOREVER 0x02000000 + + /* 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 0x00000 +#define NS_RCT_32_END 0x03FFF +#define NS_RCT_128_END 0x0FFFF +#define NS_UNUSED_32 0x04000 +#define NS_UNUSED_128 0x10000 +#define NS_UNUSED_END 0x1BFFF +#define NS_TST_FRSCD 0x1C000 +#define NS_TST_FRSCD_END 0x1E7DB +#define NS_VRSCD2 0x1E7DC +#define NS_VRSCD2_END 0x1E7E7 +#define NS_VRSCD1 0x1E7E8 +#define NS_VRSCD1_END 0x1E7F3 +#define NS_VRSCD0 0x1E7F4 +#define NS_VRSCD0_END 0x1E7FF +#define NS_RXFIFO 0x1E800 +#define NS_RXFIFO_END 0x1F7FF +#define NS_SMFBQ 0x1F800 +#define NS_SMFBQ_END 0x1FBFF +#define NS_LGFBQ 0x1FC00 +#define NS_LGFBQ_END 0x1FFFF + +/* NISCtAR operation registers */ + +/* See Section 3.4 of `IDT77211 NICStAR User Manual' from www.idt.com */ + +enum ns_regs { + DR0 = 0x00, /* Data Register 0 R/W */ + DR1 = 0x04, /* Data Register 1 W */ + DR2 = 0x08, /* Data Register 2 W */ + DR3 = 0x0C, /* Data Register 3 W */ + CMD = 0x10, /* Command W */ + CFG = 0x14, /* Configuration R/W */ + STAT = 0x18, /* Status R/W */ + RSQB = 0x1C, /* Receive Status Queue Base W */ + RSQT = 0x20, /* Receive Status Queue Tail R */ + RSQH = 0x24, /* Receive Status Queue Head W */ + CDC = 0x28, /* Cell Drop Counter R/clear */ + VPEC = 0x2C, /* VPI/VCI Lookup Error Count R/clear */ + ICC = 0x30, /* Invalid Cell Count R/clear */ + RAWCT = 0x34, /* Raw Cell Tail R */ + TMR = 0x38, /* Timer R */ + TSTB = 0x3C, /* Transmit Schedule Table Base R/W */ + TSQB = 0x40, /* Transmit Status Queue Base W */ + TSQT = 0x44, /* Transmit Status Queue Tail R */ + TSQH = 0x48, /* Transmit Status Queue Head W */ + GP = 0x4C, /* General Purpose R/W */ + VPM = 0x50 /* 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 0x00000000 + /* params always 0 */ + +#define NS_CMD_OPENCLOSE_CONNECTION 0x20000000 + /* b19{1=open,0=close} b18-2{SRAM addr} */ + +#define NS_CMD_WRITE_SRAM 0x40000000 + /* b18-2{SRAM addr} b1-0{burst size} */ + +#define NS_CMD_READ_SRAM 0x50000000 + /* b18-2{SRAM addr} */ + +#define NS_CMD_WRITE_FREEBUFQ 0x60000000 + /* b0{large buf indicator} */ + +#define NS_CMD_READ_UTILITY 0x80000000 + /* b8{1=select UTL_CS1} b9{1=select UTL_CS0} b7-0{bus addr} */ + +#define NS_CMD_WRITE_UTILITY 0x90000000 + /* b8{1=select UTL_CS1} b9{1=select UTL_CS0} b7-0{bus addr} */ + +#define NS_CMD_OPEN_CONNECTION (NS_CMD_OPENCLOSE_CONNECTION | 0x00080000) +#define NS_CMD_CLOSE_CONNECTION NS_CMD_OPENCLOSE_CONNECTION + +/* NICStAR configuration bits */ + +#define NS_CFG_SWRST 0x80000000 /* Software Reset */ +#define NS_CFG_RXPATH 0x20000000 /* Receive Path Enable */ +#define NS_CFG_SMBUFSIZE_MASK 0x18000000 /* Small Receive Buffer Size */ +#define NS_CFG_LGBUFSIZE_MASK 0x06000000 /* Large Receive Buffer Size */ +#define NS_CFG_EFBIE 0x01000000 /* Empty Free Buffer Queue + Interrupt Enable */ +#define NS_CFG_RSQSIZE_MASK 0x00C00000 /* Receive Status Queue Size */ +#define NS_CFG_ICACCEPT 0x00200000 /* Invalid Cell Accept */ +#define NS_CFG_IGNOREGFC 0x00100000 /* Ignore General Flow Control */ +#define NS_CFG_VPIBITS_MASK 0x000C0000 /* VPI/VCI Bits Size Select */ +#define NS_CFG_RCTSIZE_MASK 0x00030000 /* Receive Connection Table Size */ +#define NS_CFG_VCERRACCEPT 0x00008000 /* VPI/VCI Error Cell Accept */ +#define NS_CFG_RXINT_MASK 0x00007000 /* End of Receive PDU Interrupt + Handling */ +#define NS_CFG_RAWIE 0x00000800 /* Raw Cell Qu' Interrupt Enable */ +#define NS_CFG_RSQAFIE 0x00000400 /* Receive Queue Almost Full + Interrupt Enable */ +#define NS_CFG_RXRM 0x00000200 /* Receive RM Cells */ +#define NS_CFG_TMRROIE 0x00000080 /* Timer Roll Over Interrupt + Enable */ +#define NS_CFG_TXEN 0x00000020 /* Transmit Operation Enable */ +#define NS_CFG_TXIE 0x00000010 /* Transmit Status Interrupt + Enable */ +#define NS_CFG_TXURIE 0x00000008 /* Transmit Under-run Interrupt + Enable */ +#define NS_CFG_UMODE 0x00000004 /* Utopia Mode (cell/byte) Select */ +#define NS_CFG_TSQFIE 0x00000002 /* Transmit Status Queue Full + Interrupt Enable */ +#define NS_CFG_PHYIE 0x00000001 /* PHY Interrupt Enable */ + +#define NS_CFG_SMBUFSIZE_48 0x00000000 +#define NS_CFG_SMBUFSIZE_96 0x08000000 +#define NS_CFG_SMBUFSIZE_240 0x10000000 +#define NS_CFG_SMBUFSIZE_2048 0x18000000 + +#define NS_CFG_LGBUFSIZE_2048 0x00000000 +#define NS_CFG_LGBUFSIZE_4096 0x02000000 +#define NS_CFG_LGBUFSIZE_8192 0x04000000 +#define NS_CFG_LGBUFSIZE_16384 0x06000000 + +#define NS_CFG_RSQSIZE_2048 0x00000000 +#define NS_CFG_RSQSIZE_4096 0x00400000 +#define NS_CFG_RSQSIZE_8192 0x00800000 + +#define NS_CFG_VPIBITS_0 0x00000000 +#define NS_CFG_VPIBITS_1 0x00040000 +#define NS_CFG_VPIBITS_2 0x00080000 +#define NS_CFG_VPIBITS_8 0x000C0000 + +#define NS_CFG_RCTSIZE_4096_ENTRIES 0x00000000 +#define NS_CFG_RCTSIZE_8192_ENTRIES 0x00010000 +#define NS_CFG_RCTSIZE_16384_ENTRIES 0x00020000 + +#define NS_CFG_RXINT_NOINT 0x00000000 +#define NS_CFG_RXINT_NODELAY 0x00001000 +#define NS_CFG_RXINT_314US 0x00002000 +#define NS_CFG_RXINT_624US 0x00003000 +#define NS_CFG_RXINT_899US 0x00004000 + +/* NICStAR STATus bits */ + +#define NS_STAT_SFBQC_MASK 0xFF000000 /* hi 8 bits Small Buffer Queue Count */ +#define NS_STAT_LFBQC_MASK 0x00FF0000 /* hi 8 bits Large Buffer Queue Count */ +#define NS_STAT_TSIF 0x00008000 /* Transmit Status Queue Indicator */ +#define NS_STAT_TXICP 0x00004000 /* Transmit Incomplete PDU */ +#define NS_STAT_TSQF 0x00001000 /* Transmit Status Queue Full */ +#define NS_STAT_TMROF 0x00000800 /* Timer Overflow */ +#define NS_STAT_PHYI 0x00000400 /* PHY Device Interrupt */ +#define NS_STAT_CMDBZ 0x00000200 /* Command Busy */ +#define NS_STAT_SFBQF 0x00000100 /* Small Buffer Queue Full */ +#define NS_STAT_LFBQF 0x00000080 /* Large Buffer Queue Full */ +#define NS_STAT_RSQF 0x00000040 /* Receive Status Queue Full */ +#define NS_STAT_EOPDU 0x00000020 /* End of PDU */ +#define NS_STAT_RAWCF 0x00000010 /* Raw Cell Flag */ +#define NS_STAT_SFBQE 0x00000008 /* Small Buffer Queue Empty */ +#define NS_STAT_LFBQE 0x00000004 /* Large Buffer Queue Empty */ +#define NS_STAT_RSQAF 0x00000002 /* 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 0x00000000 +#endif /* RCQ_SUPPORT */ + +#ifdef ENABLE_TSQFIE +#define NS_CFG_TSQFIE_OPT NS_CFG_TSQFIE +#else +#define NS_CFG_TSQFIE_OPT 0x00000000 +#endif /* ENABLE_TSQFIE */ + +/* PCI stuff */ + +#ifndef PCI_VENDOR_ID_IDT +#define PCI_VENDOR_ID_IDT 0x111D +#endif /* PCI_VENDOR_ID_IDT */ + +#ifndef PCI_DEVICE_ID_IDT_IDT77201 +#define PCI_DEVICE_ID_IDT_IDT77201 0x0001 +#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_ */ |