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freebsd-skq/sys/dev/hea/eni.h
Peter Wemm c3aac50f28 $Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00

500 lines
16 KiB
C
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/*
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
* @(#) $FreeBSD$
*
*/
/*
* Efficient ENI Adapter Support
*
* Protocol and implementation definitions
*
*/
#ifndef _ENI_ENI_H
#define _ENI_ENI_H
#include <pci/pcireg.h>
#include <pci/pcivar.h>
/*
* Physical device name - used to configure HARP devices
*/
#ifndef ENI_DEV_NAME
#define ENI_DEV_NAME "hea" /* HARP Efficient ATM */
#endif
#define ENI_MAX_UNITS 4
#define ENI_IFF_MTU 9188
#define ENI_MAX_VCI 1023 /* 0 - 1023 */
#define ENI_MAX_VPI 0
#define ENI_IFQ_MAXLEN 1000 /* rx/tx queue lengths */
#ifdef BSD
/*
* Size of small and large receive buffers
*/
#define ENI_SMALL_BSIZE 64
#define ENI_LARGE_BSIZE MCLBYTES
#endif /* BSD */
/*
* ENI memory map offsets IN WORDS, not bytes
*
* The Efficient Adapter implements a 4 MB address space. The lower
* 2 MB are used by bootprom (E)EPROM and by chipset registers such
* as the MIDWAY and SUNI chips. The (upto) upper 2 MB is used for
* RAM. Of the RAM, the lower 28 KB is used for fixed tables - the
* VCI table, the RX and TX DMA queues, and the Service List queue.
* Memory above the 28 KB range is available for RX and TX buffers.
*
* NOTE: Access to anything other then the (E)EPROM MUST be as a 32 bit
* access. Also note that Efficient uses both byte addresses and word
* addresses when describing offsets. BE CAREFUL or you'll get confused!
*/
/*
* Size of memory space reserved for registers and expansion (e)eprom.
*/
#define ENI_REG_SIZE 0x200000 /* Two megabytes */
#define SUNI_OFFSET 0x008000 /* SUNI chip registers */
#define MIDWAY_OFFSET 0x010000 /* MIDWAY chip registers */
#define RAM_OFFSET 0x080000 /* Adapter RAM */
#define VCITBL_OFFSET 0x080000 /* VCI Table offset */
#define RXQUEUE_OFFSET 0x081000 /* RX DMA Queue offset */
#define TXQUEUE_OFFSET 0x081400 /* TX DMA Queue offset */
#define SVCLIST_OFFSET 0x081800 /* SVC List Queue offset */
#define SEGBUF_BASE 0x007000 /* Base from start of RAM */
#define DMA_LIST_SIZE 512 /* 1024 words / 2 words per entry */
#define SVC_LIST_SIZE 1024 /* 1024 words / 1 word per entry */
/*
* Values for testing size of RAM on adapter
*
* Efficient has (at least) two different memory sizes available. One
* is a client card which has either 128 KB or 512 KB RAM, the other
* is a server card which has 2 MB RAM. The driver will size and test
* the memory to correctly determine what's available.
*/
#define MAX_ENI_MEM 0x200000 /* 2 MB - max. mem supported */
#define TEST_STEP 0x000400 /* Look at 1 KB steps */
#define TEST_PAT 0xA5A5A5A5 /* Test pattern */
/*
* Values for memory allocator
*/
#define ENI_BUF_PGSZ 1024 /* Allocation unit of buffers */
#define ENI_BUF_NBIT 8 /* Number of bits to get from */
/* min buffer (1KB) to max (128KB) */
/*
* Values for allocating TX buffers
*/
#define MAX_CLIENT_RAM 512 /* Most RAM a client card will have */
#define TX_SMALL_BSIZE 32 /* Small buffer - 32KB */
#define TX_LARGE_BSIZE 128 /* Large buffer - 128KB */
/*
* Values for allocating RX buffers
*/
#define RX_SIG_BSIZE 4 /* Signalling buffer - 4KB */
#define RX_CLIENT_BSIZE 16 /* Client buffer - 16KB */
#define RX_SERVER_BSIZE 32 /* Server buffer - 32KB */
/*
* Adapter bases all addresses off of some power from 1KB. Thus, it
* only needs to store the most sigificant bits and can drop the lower
* 10 bits.
*/
#define ENI_LOC_PREDIV 10 /* Bits location is shifted */
/* Location is prescaled by 1KB */
/* before use in various places */
#define MIDWAY_DELAY 10 /* Time to wait for Midway finish */
/*
* Define the MIDWAY register offsets and any interesting bits within
* the register
*/
#define MIDWAY_ID 0x00 /* ID/Reset register */
#define MIDWAY_RESET 0 /* iWrite of any value */
#define ID_SHIFT 27 /* Midway ID version */
#define ID_MASK 0x1F /* ID mask */
#define MID_SHIFT 7 /* Mother board ID */
#define MID_MASK 0x7 /* MID mask */
#define DID_SHIFT 0 /* Daughter board ID */
#define DID_MASK 0x1F /* DID mask */
/*
* Efficient defines the following IDs for their adapters:
* 0x420/0x620 - SONET MMF, client memory size
* 0x430/0x630 - SONET MMF, server memory size
* 0x424/0x624 - UTP-5, client memory size
* 0x434/0x634 - UTP-5, server memory size
*/
#define MEDIA_MASK 0x04 /* Mask off UTP-5/MMF media */
#define MIDWAY_ISA 0x01 /* Interrupt Status Ack. */
/* Reading this register */
/* also acknowledges the */
/* posted interrupt(s) */
#define MIDWAY_IS 0x02 /* Interrupt Status */
/* Reading this register */
/* does NOT acknowledge the */
/* posted interrupt(s) */
/* Interrupt names */
#define ENI_INT_STAT 0x00000001
#define ENI_INT_SUNI 0x00000002
#define ENI_INT_SERVICE 0x00000004
#define ENI_INT_TX_DMA 0x00000008
#define ENI_INT_RX_DMA 0x00000010
#define ENI_INT_DMA_ERR 0x00000020
#define ENI_INT_DMA_LERR 0x00000040
#define ENI_INT_IDEN 0x00000080
#define ENI_INT_DMA_OVFL 0x00000100
#define ENI_INT_TX_MASK 0x0001FE00
#define MIDWAY_IE 0x03 /* Interrupt Enable register */
/* Interrupt enable bits are the same as the Interrupt names */
#define MIDWAY_MASTER 0x04 /* Master Control */
/* Master control bits */
#define ENI_M_WAIT500 0x00000001 /* Disable interrupts .5 ms */
#define ENI_M_WAIT1 0x00000002 /* Disable interrupts 1 ms */
#define ENI_M_RXENABLE 0x00000004 /* Enable RX engine */
#define ENI_M_TXENABLE 0x00000008 /* Enable TX engine */
#define ENI_M_DMAENABLE 0x00000010 /* Enable DMA */
#define ENI_M_TXLOCK 0x00000020 /* 0: Streaming, 1: Lock */
#define ENI_M_INTSEL 0x000001C0 /* Int Select mask */
#define ENI_ISEL_SHIFT 6 /* Bits to shift ISEL value */
#define MIDWAY_STAT 0x05 /* Statistics register */
#define MIDWAY_SVCWR 0x06 /* Svc List write pointer */
#define SVC_SIZE_MASK 0x3FF /* Valid bits in svc pointer */
#define MIDWAY_DMAADDR 0x07 /* Current virtual DMA addr */
#define MIDWAY_RX_WR 0x08 /* Write ptr to RX DMA queue */
#define MIDWAY_RX_RD 0x09 /* Read ptr to RX DMA queue */
#define MIDWAY_TX_WR 0x0A /* Write ptr to TX DMA queue */
#define MIDWAY_TX_RD 0x0B /* Read ptr to TX DMA queue */
/*
* Registers 0x0C - 0x0F are unused
*/
/*
* MIDWAY supports 8 transmit channels. Each channel has 3 registers
* to control operation. Each new channel starts on N * 4 set. Thus,
* channel 0 uses register 0x10 - 0x13, channel 1 uses 0x14 - 0x17, etc.
* Register 0x13 + N * 4 is unused.
*/
#define MIDWAY_TXPLACE 0x10 /* Channel N TX location */
#define TXSIZE_SHIFT 11 /* Bits to shift size by */
#define TX_PLACE_MASK 0x7FF /* Valid bits in TXPLACE */
#define MIDWAY_RDPTR 0x11 /* Channel N Read ptr */
#define MIDWAY_DESCR 0x12 /* Channel N Descr ptr */
/*
* Register 0x30 on up are unused
*/
/*
* Part of PCI configuration registers but not defined in <pci/pcireg.h>
*/
#define PCI_CONTROL_REG 0x60
#define ENDIAN_SWAP_DMA 0x80 /* Enable endian swaps on DMA */
/*
* The Efficient adapter references adapter RAM through the use of
* location and size values. Eight sizes are defined. When allocating
* buffers, there size must be rounded up to the next size which will
* hold the requested size. Buffers are allocated on 'SIZE' boundaries.
* See eni_buffer.c for more info.
*/
/*
* Buffer SIZE definitions - in words, so from 1 KB to 128 KB
*/
#define SIZE_256 0x00
#define SIZE_512 0x01
#define SIZE_1K 0x02
#define SIZE_2K 0x03
#define SIZE_4K 0x04
#define SIZE_8K 0x05
#define SIZE_16K 0x06
#define SIZE_32K 0x07
/*
* Define values for DMA type - DMA descriptors include a type field and a
* count field except in the special case of JK (just-kidding). With type JK,
* the count field should be set to the address which will be loaded
* into the pointer, ie. where the pointer should next point to, since
* JK doesn't have a "size" associated with it. JK DMA is used to skip
* over descriptor words, and to strip off padding of AAL5 PDUs. The
* DMA_nWORDM types will do a n word DMA burst, but the count field
* does not have to equal n. Any difference results in garbage filling
* the remaining words of the DMA. These types could be used where a
* particular burst size yields better DMA performance.
*/
#define DMA_WORD 0x00
#define DMA_BYTE 0x01
#define DMA_HWORD 0x02
#define DMA_JK 0x03
#define DMA_4WORD 0x04
#define DMA_8WORD 0x05
#define DMA_16WORD 0x06
#define DMA_2WORD 0x07
#define DMA_4WORDM 0x0C
#define DMA_8WORDM 0x0D
#define DMA_16WORDM 0x0E
#define DMA_2WORDM 0x0F
/*
* Define the size of the local DMA list we'll build before
* giving up on the PDU.
*/
#define TEMP_DMA_SIZE 120 /* Enough for 58/59 buffers */
#define DMA_COUNT_SHIFT 16 /* Number of bits to shift count */
/* in DMA descriptor word */
#define DMA_VCC_SHIFT 6 /* Number of bits to shift RX VCC or */
/* TX channel in DMA descriptor word */
#define DMA_END_BIT 0x20 /* Signal end of DMA list */
/*
* Defines for VCI table
*
* The VCI table is a 1K by 4 word table allowing up to 1024 (0-1023)
* VCIs. Entries into the table use the VCI number as the index.
*/
struct vci_table {
u_long vci_control; /* Control word */
u_long vci_descr; /* Descr/ReadPtr */
u_long vci_write; /* WritePtr/State/Cell count */
u_long vci_crc; /* ongoing CRC calculation */
};
typedef volatile struct vci_table VCI_Table;
#define VCI_MODE_SHIFT 30 /* Shift to get MODE field */
#define VCI_MODE_MASK 0x3FFFFFFF /* Bits to strip MODE off */
#define VCI_PTI_SHIFT 29 /* Shift to get PTI mode field */
#define VCI_LOC_SHIFT 18 /* Shift to get location field */
#define VCI_LOC_MASK 0x7FF /* Valid bits in location field */
#define VCI_SIZE_SHIFT 15 /* Shift to get size field */
#define VCI_SIZE_MASK 7 /* Valid bits in size field */
#define VCI_IN_SERVICE 1 /* Mask for IN_SERVICE field */
/*
* Defines for VC mode
*/
#define VCI_MODE_TRASH 0x00 /* Trash all cells for this VC */
#define VCI_MODE_AAL0 0x01 /* Reassemble as AAL_0 PDU */
#define VCI_MODE_AAL5 0x02 /* Reassemble as AAL_5 PDU */
/*
* Defines for handling cells with PTI(2) set to 1.
*/
#define PTI_MODE_TRASH 0x00 /* Trash cell */
#define PTI_MODE_PRESV 0x01 /* Send cell to OAM channel */
/*
* Current state of VC
*/
#define VCI_STATE_IDLE 0x00 /* VC is idle */
#define VCI_STATE_REASM 0x01 /* VC is reassembling PDU */
#define VCI_STATE_TRASH 0x03 /* VC is trashing cells */
/*
* RX Descriptor word values
*/
#define DESCR_TRASH_BIT 0x1000 /* VCI was trashing cells */
#define DESCR_CRC_ERR 0x0800 /* PDU has CRC error */
#define DESCR_CELL_COUNT 0x07FF /* Mask to get cell count */
/*
* TX Descriptor word values
*/
#define TX_IDEN_SHIFT 28 /* Unique identifier location */
#define TX_MODE_SHIFT 27 /* AAL5 or AAL0 */
#define TX_VCI_SHIFT 4 /* Bits to shift VCI value */
/*
* When setting up descriptor words (at head of segmentation queues), there
* is a unique identifier used to help detect sync problems.
*/
#define MIDWAY_UNQ_ID 0x0B
/*
* Defines for cell sizes
*/
#define BYTES_PER_CELL 48 /* Number of data bytes per cell */
#define WORDS_PER_CELL 12 /* Number of data words per cell */
/*
* Access to Serial EEPROM [as opposed to expansion (E)PROM].
*
* This is a ATMEL AT24C01 serial EEPROM part.
* See http://www.atmel.com/atmel/products/prod162.htm for timimg diagrams
* for START/STOP/ACK/READ cycles.
*/
#define SEEPROM PCI_CONTROL_REG /* Serial EEPROM is accessed thru */
/* PCI control register */
#define SEPROM_DATA 0x02 /* SEEPROM DATA line */
#define SEPROM_CLK 0x01 /* SEEPROM CLK line */
#define SEPROM_SIZE 128 /* Size of Serial EEPROM */
#define SEPROM_MAC_OFF 64 /* Offset to MAC address */
#define SEPROM_SN_OFF 112 /* Offset to serial number */
#define SEPROM_DELAY 10 /* Delay when strobing CLK/DATA lines */
/*
* Host protocol control blocks
*
*/
/*
* Device VCC Entry
*
* Contains the common and ENI-specific information for each VCC
* which is opened through a ENI device.
*/
struct eni_vcc {
struct cmn_vcc ev_cmn; /* Common VCC stuff */
caddr_t ev_rxbuf; /* Receive buffer */
u_long ev_rxpos; /* Adapter buffer read pointer */
};
typedef struct eni_vcc Eni_vcc;
#define ev_next ev_cmn.cv_next
#define ev_toku ev_cmn.cv_toku
#define ev_upper ev_cmn.cv_upper
#define ev_connvc ev_cmn.cv_connvc
#define ev_state ev_cmn.cv_state
typedef volatile unsigned long * Eni_mem;
/*
* Define the ID's we'll look for in the PCI config
* register when deciding if we'll support this device.
* The DEV_ID will need to be turned into an array of
* ID's in order to support multiple adapters with
* the same driver.
*/
#define EFF_VENDOR_ID 0x111A
#define EFF_DEV_ID 0x0002
/*
* Memory allocator defines and buffer descriptors
*/
#define MEM_FREE 0
#define MEM_INUSE 1
typedef struct mbd Mbd;
struct mbd {
Mbd *prev;
Mbd *next;
caddr_t base; /* Adapter base address */
int size; /* Size of buffer */
int state; /* INUSE or FREE */
};
/*
* We use a hack to allocate a smaller RX buffer for signalling
* channels as they tend to have small MTU lengths.
*/
#define UNI_SIG_VCI 5
/*
* Device Unit Structure
*
* Contains all the information for a single device (adapter).
*/
struct eni_unit {
Cmn_unit eu_cmn; /* Common unit stuff */
pcici_t eu_pcitag; /* PCI tag */
Eni_mem eu_base; /* Adapter memory base */
Eni_mem eu_ram; /* Adapter RAM */
u_long eu_ramsize;
Eni_mem eu_suni; /* SUNI registers */
Eni_mem eu_midway; /* MIDWAY registers */
VCI_Table *eu_vcitbl; /* VCI Table */
Eni_mem eu_rxdma; /* Receive DMA queue */
Eni_mem eu_txdma; /* Transmit DMA queue */
Eni_mem eu_svclist; /* Service list */
u_long eu_servread; /* Read pointer into Service list */
caddr_t eu_txbuf; /* One large TX buff for everything */
u_long eu_txsize; /* Size of TX buffer */
u_long eu_txpos; /* Current word being stored in RAM */
u_long eu_txfirst; /* First word of unack'ed data */
u_long eu_trash;
u_long eu_ovfl;
struct ifqueue eu_txqueue;
u_long eu_txdmawr;
struct ifqueue eu_rxqueue;
u_long eu_rxdmawr; /* DMA list write pointer */
u_char eu_seeprom[SEPROM_SIZE]; /* Serial EEPROM contents */
u_int eu_sevar; /* Unique (per unit) seeprom var. */
Mbd *eu_memmap; /* Adapter RAM memory allocator map */
int eu_memclicks[ENI_BUF_NBIT];/* Count of INUSE buffers */
Eni_stats eu_stats; /* Statistics */
};
typedef struct eni_unit Eni_unit;
#define eu_pif eu_cmn.cu_pif
#define eu_unit eu_cmn.cu_unit
#define eu_flags eu_cmn.cu_flags
#define eu_mtu eu_cmn.cu_mtu
#define eu_open_vcc eu_cmn.cu_open_vcc
#define eu_vcc eu_cmn.cu_vcc
#define eu_vcc_pool eu_cmn.cu_vcc_pool
#define eu_nif_pool eu_cmn.cu_nif_pool
#define eu_ioctl eu_cmn.cu_ioctl
#define eu_instvcc eu_cmn.cu_instvcc
#define eu_openvcc eu_cmn.cu_openvcc
#define eu_closevcc eu_cmn.cu_closevcc
#define eu_output eu_cmn.cu_output
#define eu_config eu_cmn.cu_config
#endif /* _ENI_ENI_H */
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