diff options
Diffstat (limited to 'drivers/atm/fore200e.h')
| -rw-r--r-- | drivers/atm/fore200e.h | 974 |
1 files changed, 974 insertions, 0 deletions
diff --git a/drivers/atm/fore200e.h b/drivers/atm/fore200e.h new file mode 100644 index 0000000000..caf0ea6a32 --- /dev/null +++ b/drivers/atm/fore200e.h @@ -0,0 +1,974 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _FORE200E_H +#define _FORE200E_H + +#ifdef __KERNEL__ + +/* rx buffer sizes */ + +#define SMALL_BUFFER_SIZE 384 /* size of small buffers (multiple of 48 (PCA) and 64 (SBA) bytes) */ +#define LARGE_BUFFER_SIZE 4032 /* size of large buffers (multiple of 48 (PCA) and 64 (SBA) bytes) */ + + +#define RBD_BLK_SIZE 32 /* nbr of supplied rx buffers per rbd */ + + +#define MAX_PDU_SIZE 65535 /* maximum PDU size supported by AALs */ + + +#define BUFFER_S1_SIZE SMALL_BUFFER_SIZE /* size of small buffers, scheme 1 */ +#define BUFFER_L1_SIZE LARGE_BUFFER_SIZE /* size of large buffers, scheme 1 */ + +#define BUFFER_S2_SIZE SMALL_BUFFER_SIZE /* size of small buffers, scheme 2 */ +#define BUFFER_L2_SIZE LARGE_BUFFER_SIZE /* size of large buffers, scheme 2 */ + +#define BUFFER_S1_NBR (RBD_BLK_SIZE * 6) +#define BUFFER_L1_NBR (RBD_BLK_SIZE * 4) + +#define BUFFER_S2_NBR (RBD_BLK_SIZE * 6) +#define BUFFER_L2_NBR (RBD_BLK_SIZE * 4) + + +#define QUEUE_SIZE_CMD 16 /* command queue capacity */ +#define QUEUE_SIZE_RX 64 /* receive queue capacity */ +#define QUEUE_SIZE_TX 256 /* transmit queue capacity */ +#define QUEUE_SIZE_BS 32 /* buffer supply queue capacity */ + +#define FORE200E_VPI_BITS 0 +#define FORE200E_VCI_BITS 10 +#define NBR_CONNECT (1 << (FORE200E_VPI_BITS + FORE200E_VCI_BITS)) /* number of connections */ + + +#define TSD_FIXED 2 +#define TSD_EXTENSION 0 +#define TSD_NBR (TSD_FIXED + TSD_EXTENSION) + + +/* the cp starts putting a received PDU into one *small* buffer, + then it uses a number of *large* buffers for the trailing data. + we compute here the total number of receive segment descriptors + required to hold the largest possible PDU */ + +#define RSD_REQUIRED (((MAX_PDU_SIZE - SMALL_BUFFER_SIZE + LARGE_BUFFER_SIZE) / LARGE_BUFFER_SIZE) + 1) + +#define RSD_FIXED 3 + +/* RSD_REQUIRED receive segment descriptors are enough to describe a max-sized PDU, + but we have to keep the size of the receive PDU descriptor multiple of 32 bytes, + so we add one extra RSD to RSD_EXTENSION + (WARNING: THIS MAY CHANGE IF BUFFER SIZES ARE MODIFIED) */ + +#define RSD_EXTENSION ((RSD_REQUIRED - RSD_FIXED) + 1) +#define RSD_NBR (RSD_FIXED + RSD_EXTENSION) + + +#define FORE200E_DEV(d) ((struct fore200e*)((d)->dev_data)) +#define FORE200E_VCC(d) ((struct fore200e_vcc*)((d)->dev_data)) + +/* bitfields endian games */ + +#if defined(__LITTLE_ENDIAN_BITFIELD) +#define BITFIELD2(b1, b2) b1; b2; +#define BITFIELD3(b1, b2, b3) b1; b2; b3; +#define BITFIELD4(b1, b2, b3, b4) b1; b2; b3; b4; +#define BITFIELD5(b1, b2, b3, b4, b5) b1; b2; b3; b4; b5; +#define BITFIELD6(b1, b2, b3, b4, b5, b6) b1; b2; b3; b4; b5; b6; +#elif defined(__BIG_ENDIAN_BITFIELD) +#define BITFIELD2(b1, b2) b2; b1; +#define BITFIELD3(b1, b2, b3) b3; b2; b1; +#define BITFIELD4(b1, b2, b3, b4) b4; b3; b2; b1; +#define BITFIELD5(b1, b2, b3, b4, b5) b5; b4; b3; b2; b1; +#define BITFIELD6(b1, b2, b3, b4, b5, b6) b6; b5; b4; b3; b2; b1; +#else +#error unknown bitfield endianess +#endif + + +/* ATM cell header (minus HEC byte) */ + +typedef struct atm_header { + BITFIELD5( + u32 clp : 1, /* cell loss priority */ + u32 plt : 3, /* payload type */ + u32 vci : 16, /* virtual channel identifier */ + u32 vpi : 8, /* virtual path identifier */ + u32 gfc : 4 /* generic flow control */ + ) +} atm_header_t; + + +/* ATM adaptation layer id */ + +typedef enum fore200e_aal { + FORE200E_AAL0 = 0, + FORE200E_AAL34 = 4, + FORE200E_AAL5 = 5, +} fore200e_aal_t; + + +/* transmit PDU descriptor specification */ + +typedef struct tpd_spec { + BITFIELD4( + u32 length : 16, /* total PDU length */ + u32 nseg : 8, /* number of transmit segments */ + enum fore200e_aal aal : 4, /* adaptation layer */ + u32 intr : 4 /* interrupt requested */ + ) +} tpd_spec_t; + + +/* transmit PDU rate control */ + +typedef struct tpd_rate +{ + BITFIELD2( + u32 idle_cells : 16, /* number of idle cells to insert */ + u32 data_cells : 16 /* number of data cells to transmit */ + ) +} tpd_rate_t; + + +/* transmit segment descriptor */ + +typedef struct tsd { + u32 buffer; /* transmit buffer DMA address */ + u32 length; /* number of bytes in buffer */ +} tsd_t; + + +/* transmit PDU descriptor */ + +typedef struct tpd { + struct atm_header atm_header; /* ATM header minus HEC byte */ + struct tpd_spec spec; /* tpd specification */ + struct tpd_rate rate; /* tpd rate control */ + u32 pad; /* reserved */ + struct tsd tsd[ TSD_NBR ]; /* transmit segment descriptors */ +} tpd_t; + + +/* receive segment descriptor */ + +typedef struct rsd { + u32 handle; /* host supplied receive buffer handle */ + u32 length; /* number of bytes in buffer */ +} rsd_t; + + +/* receive PDU descriptor */ + +typedef struct rpd { + struct atm_header atm_header; /* ATM header minus HEC byte */ + u32 nseg; /* number of receive segments */ + struct rsd rsd[ RSD_NBR ]; /* receive segment descriptors */ +} rpd_t; + + +/* buffer scheme */ + +typedef enum buffer_scheme { + BUFFER_SCHEME_ONE, + BUFFER_SCHEME_TWO, + BUFFER_SCHEME_NBR /* always last */ +} buffer_scheme_t; + + +/* buffer magnitude */ + +typedef enum buffer_magn { + BUFFER_MAGN_SMALL, + BUFFER_MAGN_LARGE, + BUFFER_MAGN_NBR /* always last */ +} buffer_magn_t; + + +/* receive buffer descriptor */ + +typedef struct rbd { + u32 handle; /* host supplied handle */ + u32 buffer_haddr; /* host DMA address of host buffer */ +} rbd_t; + + +/* receive buffer descriptor block */ + +typedef struct rbd_block { + struct rbd rbd[ RBD_BLK_SIZE ]; /* receive buffer descriptor */ +} rbd_block_t; + + +/* tpd DMA address */ + +typedef struct tpd_haddr { + BITFIELD3( + u32 size : 4, /* tpd size expressed in 32 byte blocks */ + u32 pad : 1, /* reserved */ + u32 haddr : 27 /* tpd DMA addr aligned on 32 byte boundary */ + ) +} tpd_haddr_t; + +#define TPD_HADDR_SHIFT 5 /* addr aligned on 32 byte boundary */ + +/* cp resident transmit queue entry */ + +typedef struct cp_txq_entry { + struct tpd_haddr tpd_haddr; /* host DMA address of tpd */ + u32 status_haddr; /* host DMA address of completion status */ +} cp_txq_entry_t; + + +/* cp resident receive queue entry */ + +typedef struct cp_rxq_entry { + u32 rpd_haddr; /* host DMA address of rpd */ + u32 status_haddr; /* host DMA address of completion status */ +} cp_rxq_entry_t; + + +/* cp resident buffer supply queue entry */ + +typedef struct cp_bsq_entry { + u32 rbd_block_haddr; /* host DMA address of rbd block */ + u32 status_haddr; /* host DMA address of completion status */ +} cp_bsq_entry_t; + + +/* completion status */ + +typedef volatile enum status { + STATUS_PENDING = (1<<0), /* initial status (written by host) */ + STATUS_COMPLETE = (1<<1), /* completion status (written by cp) */ + STATUS_FREE = (1<<2), /* initial status (written by host) */ + STATUS_ERROR = (1<<3) /* completion status (written by cp) */ +} status_t; + + +/* cp operation code */ + +typedef enum opcode { + OPCODE_INITIALIZE = 1, /* initialize board */ + OPCODE_ACTIVATE_VCIN, /* activate incoming VCI */ + OPCODE_ACTIVATE_VCOUT, /* activate outgoing VCI */ + OPCODE_DEACTIVATE_VCIN, /* deactivate incoming VCI */ + OPCODE_DEACTIVATE_VCOUT, /* deactivate incoing VCI */ + OPCODE_GET_STATS, /* get board statistics */ + OPCODE_SET_OC3, /* set OC-3 registers */ + OPCODE_GET_OC3, /* get OC-3 registers */ + OPCODE_RESET_STATS, /* reset board statistics */ + OPCODE_GET_PROM, /* get expansion PROM data (PCI specific) */ + OPCODE_SET_VPI_BITS, /* set x bits of those decoded by the + firmware to be low order bits from + the VPI field of the ATM cell header */ + OPCODE_REQUEST_INTR = (1<<7) /* request interrupt */ +} opcode_t; + + +/* virtual path / virtual channel identifiers */ + +typedef struct vpvc { + BITFIELD3( + u32 vci : 16, /* virtual channel identifier */ + u32 vpi : 8, /* virtual path identifier */ + u32 pad : 8 /* reserved */ + ) +} vpvc_t; + + +/* activate VC command opcode */ + +typedef struct activate_opcode { + BITFIELD4( + enum opcode opcode : 8, /* cp opcode */ + enum fore200e_aal aal : 8, /* adaptation layer */ + enum buffer_scheme scheme : 8, /* buffer scheme */ + u32 pad : 8 /* reserved */ + ) +} activate_opcode_t; + + +/* activate VC command block */ + +typedef struct activate_block { + struct activate_opcode opcode; /* activate VC command opcode */ + struct vpvc vpvc; /* VPI/VCI */ + u32 mtu; /* for AAL0 only */ + +} activate_block_t; + + +/* deactivate VC command opcode */ + +typedef struct deactivate_opcode { + BITFIELD2( + enum opcode opcode : 8, /* cp opcode */ + u32 pad : 24 /* reserved */ + ) +} deactivate_opcode_t; + + +/* deactivate VC command block */ + +typedef struct deactivate_block { + struct deactivate_opcode opcode; /* deactivate VC command opcode */ + struct vpvc vpvc; /* VPI/VCI */ +} deactivate_block_t; + + +/* OC-3 registers */ + +typedef struct oc3_regs { + u32 reg[ 128 ]; /* see the PMC Sierra PC5346 S/UNI-155-Lite + Saturn User Network Interface documentation + for a description of the OC-3 chip registers */ +} oc3_regs_t; + + +/* set/get OC-3 regs command opcode */ + +typedef struct oc3_opcode { + BITFIELD4( + enum opcode opcode : 8, /* cp opcode */ + u32 reg : 8, /* register index */ + u32 value : 8, /* register value */ + u32 mask : 8 /* register mask that specifies which + bits of the register value field + are significant */ + ) +} oc3_opcode_t; + + +/* set/get OC-3 regs command block */ + +typedef struct oc3_block { + struct oc3_opcode opcode; /* set/get OC-3 regs command opcode */ + u32 regs_haddr; /* host DMA address of OC-3 regs buffer */ +} oc3_block_t; + + +/* physical encoding statistics */ + +typedef struct stats_phy { + __be32 crc_header_errors; /* cells received with bad header CRC */ + __be32 framing_errors; /* cells received with bad framing */ + __be32 pad[ 2 ]; /* i960 padding */ +} stats_phy_t; + + +/* OC-3 statistics */ + +typedef struct stats_oc3 { + __be32 section_bip8_errors; /* section 8 bit interleaved parity */ + __be32 path_bip8_errors; /* path 8 bit interleaved parity */ + __be32 line_bip24_errors; /* line 24 bit interleaved parity */ + __be32 line_febe_errors; /* line far end block errors */ + __be32 path_febe_errors; /* path far end block errors */ + __be32 corr_hcs_errors; /* correctable header check sequence */ + __be32 ucorr_hcs_errors; /* uncorrectable header check sequence */ + __be32 pad[ 1 ]; /* i960 padding */ +} stats_oc3_t; + + +/* ATM statistics */ + +typedef struct stats_atm { + __be32 cells_transmitted; /* cells transmitted */ + __be32 cells_received; /* cells received */ + __be32 vpi_bad_range; /* cell drops: VPI out of range */ + __be32 vpi_no_conn; /* cell drops: no connection for VPI */ + __be32 vci_bad_range; /* cell drops: VCI out of range */ + __be32 vci_no_conn; /* cell drops: no connection for VCI */ + __be32 pad[ 2 ]; /* i960 padding */ +} stats_atm_t; + +/* AAL0 statistics */ + +typedef struct stats_aal0 { + __be32 cells_transmitted; /* cells transmitted */ + __be32 cells_received; /* cells received */ + __be32 cells_dropped; /* cells dropped */ + __be32 pad[ 1 ]; /* i960 padding */ +} stats_aal0_t; + + +/* AAL3/4 statistics */ + +typedef struct stats_aal34 { + __be32 cells_transmitted; /* cells transmitted from segmented PDUs */ + __be32 cells_received; /* cells reassembled into PDUs */ + __be32 cells_crc_errors; /* payload CRC error count */ + __be32 cells_protocol_errors; /* SAR or CS layer protocol errors */ + __be32 cells_dropped; /* cells dropped: partial reassembly */ + __be32 cspdus_transmitted; /* CS PDUs transmitted */ + __be32 cspdus_received; /* CS PDUs received */ + __be32 cspdus_protocol_errors; /* CS layer protocol errors */ + __be32 cspdus_dropped; /* reassembled PDUs drop'd (in cells) */ + __be32 pad[ 3 ]; /* i960 padding */ +} stats_aal34_t; + + +/* AAL5 statistics */ + +typedef struct stats_aal5 { + __be32 cells_transmitted; /* cells transmitted from segmented SDUs */ + __be32 cells_received; /* cells reassembled into SDUs */ + __be32 cells_dropped; /* reassembled PDUs dropped (in cells) */ + __be32 congestion_experienced; /* CRC error and length wrong */ + __be32 cspdus_transmitted; /* CS PDUs transmitted */ + __be32 cspdus_received; /* CS PDUs received */ + __be32 cspdus_crc_errors; /* CS PDUs CRC errors */ + __be32 cspdus_protocol_errors; /* CS layer protocol errors */ + __be32 cspdus_dropped; /* reassembled PDUs dropped */ + __be32 pad[ 3 ]; /* i960 padding */ +} stats_aal5_t; + + +/* auxiliary statistics */ + +typedef struct stats_aux { + __be32 small_b1_failed; /* receive BD allocation failures */ + __be32 large_b1_failed; /* receive BD allocation failures */ + __be32 small_b2_failed; /* receive BD allocation failures */ + __be32 large_b2_failed; /* receive BD allocation failures */ + __be32 rpd_alloc_failed; /* receive PDU allocation failures */ + __be32 receive_carrier; /* no carrier = 0, carrier = 1 */ + __be32 pad[ 2 ]; /* i960 padding */ +} stats_aux_t; + + +/* whole statistics buffer */ + +typedef struct stats { + struct stats_phy phy; /* physical encoding statistics */ + struct stats_oc3 oc3; /* OC-3 statistics */ + struct stats_atm atm; /* ATM statistics */ + struct stats_aal0 aal0; /* AAL0 statistics */ + struct stats_aal34 aal34; /* AAL3/4 statistics */ + struct stats_aal5 aal5; /* AAL5 statistics */ + struct stats_aux aux; /* auxiliary statistics */ +} stats_t; + + +/* get statistics command opcode */ + +typedef struct stats_opcode { + BITFIELD2( + enum opcode opcode : 8, /* cp opcode */ + u32 pad : 24 /* reserved */ + ) +} stats_opcode_t; + + +/* get statistics command block */ + +typedef struct stats_block { + struct stats_opcode opcode; /* get statistics command opcode */ + u32 stats_haddr; /* host DMA address of stats buffer */ +} stats_block_t; + + +/* expansion PROM data (PCI specific) */ + +typedef struct prom_data { + u32 hw_revision; /* hardware revision */ + u32 serial_number; /* board serial number */ + u8 mac_addr[ 8 ]; /* board MAC address */ +} prom_data_t; + + +/* get expansion PROM data command opcode */ + +typedef struct prom_opcode { + BITFIELD2( + enum opcode opcode : 8, /* cp opcode */ + u32 pad : 24 /* reserved */ + ) +} prom_opcode_t; + + +/* get expansion PROM data command block */ + +typedef struct prom_block { + struct prom_opcode opcode; /* get PROM data command opcode */ + u32 prom_haddr; /* host DMA address of PROM buffer */ +} prom_block_t; + + +/* cp command */ + +typedef union cmd { + enum opcode opcode; /* operation code */ + struct activate_block activate_block; /* activate VC */ + struct deactivate_block deactivate_block; /* deactivate VC */ + struct stats_block stats_block; /* get statistics */ + struct prom_block prom_block; /* get expansion PROM data */ + struct oc3_block oc3_block; /* get/set OC-3 registers */ + u32 pad[ 4 ]; /* i960 padding */ +} cmd_t; + + +/* cp resident command queue */ + +typedef struct cp_cmdq_entry { + union cmd cmd; /* command */ + u32 status_haddr; /* host DMA address of completion status */ + u32 pad[ 3 ]; /* i960 padding */ +} cp_cmdq_entry_t; + + +/* host resident transmit queue entry */ + +typedef struct host_txq_entry { + struct cp_txq_entry __iomem *cp_entry; /* addr of cp resident tx queue entry */ + enum status* status; /* addr of host resident status */ + struct tpd* tpd; /* addr of transmit PDU descriptor */ + u32 tpd_dma; /* DMA address of tpd */ + struct sk_buff* skb; /* related skb */ + void* data; /* copy of misaligned data */ + unsigned long incarn; /* vc_map incarnation when submitted for tx */ + struct fore200e_vc_map* vc_map; + +} host_txq_entry_t; + + +/* host resident receive queue entry */ + +typedef struct host_rxq_entry { + struct cp_rxq_entry __iomem *cp_entry; /* addr of cp resident rx queue entry */ + enum status* status; /* addr of host resident status */ + struct rpd* rpd; /* addr of receive PDU descriptor */ + u32 rpd_dma; /* DMA address of rpd */ +} host_rxq_entry_t; + + +/* host resident buffer supply queue entry */ + +typedef struct host_bsq_entry { + struct cp_bsq_entry __iomem *cp_entry; /* addr of cp resident buffer supply queue entry */ + enum status* status; /* addr of host resident status */ + struct rbd_block* rbd_block; /* addr of receive buffer descriptor block */ + u32 rbd_block_dma; /* DMA address od rdb */ +} host_bsq_entry_t; + + +/* host resident command queue entry */ + +typedef struct host_cmdq_entry { + struct cp_cmdq_entry __iomem *cp_entry; /* addr of cp resident cmd queue entry */ + enum status *status; /* addr of host resident status */ +} host_cmdq_entry_t; + + +/* chunk of memory */ + +typedef struct chunk { + void* alloc_addr; /* base address of allocated chunk */ + void* align_addr; /* base address of aligned chunk */ + dma_addr_t dma_addr; /* DMA address of aligned chunk */ + int direction; /* direction of DMA mapping */ + u32 alloc_size; /* length of allocated chunk */ + u32 align_size; /* length of aligned chunk */ +} chunk_t; + +#define dma_size align_size /* DMA useable size */ + + +/* host resident receive buffer */ + +typedef struct buffer { + struct buffer* next; /* next receive buffer */ + enum buffer_scheme scheme; /* buffer scheme */ + enum buffer_magn magn; /* buffer magnitude */ + struct chunk data; /* data buffer */ +#ifdef FORE200E_BSQ_DEBUG + unsigned long index; /* buffer # in queue */ + int supplied; /* 'buffer supplied' flag */ +#endif +} buffer_t; + + +#if (BITS_PER_LONG == 32) +#define FORE200E_BUF2HDL(buffer) ((u32)(buffer)) +#define FORE200E_HDL2BUF(handle) ((struct buffer*)(handle)) +#else /* deal with 64 bit pointers */ +#define FORE200E_BUF2HDL(buffer) ((u32)((u64)(buffer))) +#define FORE200E_HDL2BUF(handle) ((struct buffer*)(((u64)(handle)) | PAGE_OFFSET)) +#endif + + +/* host resident command queue */ + +typedef struct host_cmdq { + struct host_cmdq_entry host_entry[ QUEUE_SIZE_CMD ]; /* host resident cmd queue entries */ + int head; /* head of cmd queue */ + struct chunk status; /* array of completion status */ +} host_cmdq_t; + + +/* host resident transmit queue */ + +typedef struct host_txq { + struct host_txq_entry host_entry[ QUEUE_SIZE_TX ]; /* host resident tx queue entries */ + int head; /* head of tx queue */ + int tail; /* tail of tx queue */ + struct chunk tpd; /* array of tpds */ + struct chunk status; /* arry of completion status */ + int txing; /* number of pending PDUs in tx queue */ +} host_txq_t; + + +/* host resident receive queue */ + +typedef struct host_rxq { + struct host_rxq_entry host_entry[ QUEUE_SIZE_RX ]; /* host resident rx queue entries */ + int head; /* head of rx queue */ + struct chunk rpd; /* array of rpds */ + struct chunk status; /* array of completion status */ +} host_rxq_t; + + +/* host resident buffer supply queues */ + +typedef struct host_bsq { + struct host_bsq_entry host_entry[ QUEUE_SIZE_BS ]; /* host resident buffer supply queue entries */ + int head; /* head of buffer supply queue */ + struct chunk rbd_block; /* array of rbds */ + struct chunk status; /* array of completion status */ + struct buffer* buffer; /* array of rx buffers */ + struct buffer* freebuf; /* list of free rx buffers */ + volatile int freebuf_count; /* count of free rx buffers */ +} host_bsq_t; + + +/* header of the firmware image */ + +typedef struct fw_header { + __le32 magic; /* magic number */ + __le32 version; /* firmware version id */ + __le32 load_offset; /* fw load offset in board memory */ + __le32 start_offset; /* fw execution start address in board memory */ +} fw_header_t; + +#define FW_HEADER_MAGIC 0x65726f66 /* 'fore' */ + + +/* receive buffer supply queues scheme specification */ + +typedef struct bs_spec { + u32 queue_length; /* queue capacity */ + u32 buffer_size; /* host buffer size */ + u32 pool_size; /* number of rbds */ + u32 supply_blksize; /* num of rbds in I/O block (multiple + of 4 between 4 and 124 inclusive) */ +} bs_spec_t; + + +/* initialization command block (one-time command, not in cmd queue) */ + +typedef struct init_block { + enum opcode opcode; /* initialize command */ + enum status status; /* related status word */ + u32 receive_threshold; /* not used */ + u32 num_connect; /* ATM connections */ + u32 cmd_queue_len; /* length of command queue */ + u32 tx_queue_len; /* length of transmit queue */ + u32 rx_queue_len; /* length of receive queue */ + u32 rsd_extension; /* number of extra 32 byte blocks */ + u32 tsd_extension; /* number of extra 32 byte blocks */ + u32 conless_vpvc; /* not used */ + u32 pad[ 2 ]; /* force quad alignment */ + struct bs_spec bs_spec[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ]; /* buffer supply queues spec */ +} init_block_t; + + +typedef enum media_type { + MEDIA_TYPE_CAT5_UTP = 0x06, /* unshielded twisted pair */ + MEDIA_TYPE_MM_OC3_ST = 0x16, /* multimode fiber ST */ + MEDIA_TYPE_MM_OC3_SC = 0x26, /* multimode fiber SC */ + MEDIA_TYPE_SM_OC3_ST = 0x36, /* single-mode fiber ST */ + MEDIA_TYPE_SM_OC3_SC = 0x46 /* single-mode fiber SC */ +} media_type_t; + +#define FORE200E_MEDIA_INDEX(media_type) ((media_type)>>4) + + +/* cp resident queues */ + +typedef struct cp_queues { + u32 cp_cmdq; /* command queue */ + u32 cp_txq; /* transmit queue */ + u32 cp_rxq; /* receive queue */ + u32 cp_bsq[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ]; /* buffer supply queues */ + u32 imask; /* 1 enables cp to host interrupts */ + u32 istat; /* 1 for interrupt posted */ + u32 heap_base; /* offset form beginning of ram */ + u32 heap_size; /* space available for queues */ + u32 hlogger; /* non zero for host logging */ + u32 heartbeat; /* cp heartbeat */ + u32 fw_release; /* firmware version */ + u32 mon960_release; /* i960 monitor version */ + u32 tq_plen; /* transmit throughput measurements */ + /* make sure the init block remains on a quad word boundary */ + struct init_block init; /* one time cmd, not in cmd queue */ + enum media_type media_type; /* media type id */ + u32 oc3_revision; /* OC-3 revision number */ +} cp_queues_t; + + +/* boot status */ + +typedef enum boot_status { + BSTAT_COLD_START = (u32) 0xc01dc01d, /* cold start */ + BSTAT_SELFTEST_OK = (u32) 0x02201958, /* self-test ok */ + BSTAT_SELFTEST_FAIL = (u32) 0xadbadbad, /* self-test failed */ + BSTAT_CP_RUNNING = (u32) 0xce11feed, /* cp is running */ + BSTAT_MON_TOO_BIG = (u32) 0x10aded00 /* i960 monitor is too big */ +} boot_status_t; + + +/* software UART */ + +typedef struct soft_uart { + u32 send; /* write register */ + u32 recv; /* read register */ +} soft_uart_t; + +#define FORE200E_CP_MONITOR_UART_FREE 0x00000000 +#define FORE200E_CP_MONITOR_UART_AVAIL 0x01000000 + + +/* i960 monitor */ + +typedef struct cp_monitor { + struct soft_uart soft_uart; /* software UART */ + enum boot_status bstat; /* boot status */ + u32 app_base; /* application base offset */ + u32 mon_version; /* i960 monitor version */ +} cp_monitor_t; + + +/* device state */ + +typedef enum fore200e_state { + FORE200E_STATE_BLANK, /* initial state */ + FORE200E_STATE_REGISTER, /* device registered */ + FORE200E_STATE_CONFIGURE, /* bus interface configured */ + FORE200E_STATE_MAP, /* board space mapped in host memory */ + FORE200E_STATE_RESET, /* board resetted */ + FORE200E_STATE_START_FW, /* firmware started */ + FORE200E_STATE_INITIALIZE, /* initialize command successful */ + FORE200E_STATE_INIT_CMDQ, /* command queue initialized */ + FORE200E_STATE_INIT_TXQ, /* transmit queue initialized */ + FORE200E_STATE_INIT_RXQ, /* receive queue initialized */ + FORE200E_STATE_INIT_BSQ, /* buffer supply queue initialized */ + FORE200E_STATE_ALLOC_BUF, /* receive buffers allocated */ + FORE200E_STATE_IRQ, /* host interrupt requested */ + FORE200E_STATE_COMPLETE /* initialization completed */ +} fore200e_state; + + +/* PCA-200E registers */ + +typedef struct fore200e_pca_regs { + volatile u32 __iomem * hcr; /* address of host control register */ + volatile u32 __iomem * imr; /* address of host interrupt mask register */ + volatile u32 __iomem * psr; /* address of PCI specific register */ +} fore200e_pca_regs_t; + + +/* SBA-200E registers */ + +typedef struct fore200e_sba_regs { + u32 __iomem *hcr; /* address of host control register */ + u32 __iomem *bsr; /* address of burst transfer size register */ + u32 __iomem *isr; /* address of interrupt level selection register */ +} fore200e_sba_regs_t; + + +/* model-specific registers */ + +typedef union fore200e_regs { + struct fore200e_pca_regs pca; /* PCA-200E registers */ + struct fore200e_sba_regs sba; /* SBA-200E registers */ +} fore200e_regs; + + +struct fore200e; + +/* bus-dependent data */ + +typedef struct fore200e_bus { + char* model_name; /* board model name */ + char* proc_name; /* board name under /proc/atm */ + int descr_alignment; /* tpd/rpd/rbd DMA alignment requirement */ + int buffer_alignment; /* rx buffers DMA alignment requirement */ + int status_alignment; /* status words DMA alignment requirement */ + u32 (*read)(volatile u32 __iomem *); + void (*write)(u32, volatile u32 __iomem *); + int (*configure)(struct fore200e*); + int (*map)(struct fore200e*); + void (*reset)(struct fore200e*); + int (*prom_read)(struct fore200e*, struct prom_data*); + void (*unmap)(struct fore200e*); + void (*irq_enable)(struct fore200e*); + int (*irq_check)(struct fore200e*); + void (*irq_ack)(struct fore200e*); + int (*proc_read)(struct fore200e*, char*); +} fore200e_bus_t; + +/* vc mapping */ + +typedef struct fore200e_vc_map { + struct atm_vcc* vcc; /* vcc entry */ + unsigned long incarn; /* vcc incarnation number */ +} fore200e_vc_map_t; + +#define FORE200E_VC_MAP(fore200e, vpi, vci) \ + (& (fore200e)->vc_map[ ((vpi) << FORE200E_VCI_BITS) | (vci) ]) + + +/* per-device data */ + +typedef struct fore200e { + struct list_head entry; /* next device */ + const struct fore200e_bus* bus; /* bus-dependent code and data */ + union fore200e_regs regs; /* bus-dependent registers */ + struct atm_dev* atm_dev; /* ATM device */ + + enum fore200e_state state; /* device state */ + + char name[16]; /* device name */ + struct device *dev; + int irq; /* irq number */ + unsigned long phys_base; /* physical base address */ + void __iomem * virt_base; /* virtual base address */ + + unsigned char esi[ ESI_LEN ]; /* end system identifier */ + + struct cp_monitor __iomem * cp_monitor; /* i960 monitor address */ + struct cp_queues __iomem * cp_queues; /* cp resident queues */ + struct host_cmdq host_cmdq; /* host resident cmd queue */ + struct host_txq host_txq; /* host resident tx queue */ + struct host_rxq host_rxq; /* host resident rx queue */ + /* host resident buffer supply queues */ + struct host_bsq host_bsq[ BUFFER_SCHEME_NBR ][ BUFFER_MAGN_NBR ]; + + u32 available_cell_rate; /* remaining pseudo-CBR bw on link */ + + int loop_mode; /* S/UNI loopback mode */ + + struct stats* stats; /* last snapshot of the stats */ + + struct mutex rate_mtx; /* protects rate reservation ops */ + spinlock_t q_lock; /* protects queue ops */ +#ifdef FORE200E_USE_TASKLET + struct tasklet_struct tx_tasklet; /* performs tx interrupt work */ + struct tasklet_struct rx_tasklet; /* performs rx interrupt work */ +#endif + unsigned long tx_sat; /* tx queue saturation count */ + + unsigned long incarn_count; + struct fore200e_vc_map vc_map[ NBR_CONNECT ]; /* vc mapping */ +} fore200e_t; + + +/* per-vcc data */ + +typedef struct fore200e_vcc { + enum buffer_scheme scheme; /* rx buffer scheme */ + struct tpd_rate rate; /* tx rate control data */ + int rx_min_pdu; /* size of smallest PDU received */ + int rx_max_pdu; /* size of largest PDU received */ + int tx_min_pdu; /* size of smallest PDU transmitted */ + int tx_max_pdu; /* size of largest PDU transmitted */ + unsigned long tx_pdu; /* nbr of tx pdus */ + unsigned long rx_pdu; /* nbr of rx pdus */ +} fore200e_vcc_t; + + + +/* 200E-series common memory layout */ + +#define FORE200E_CP_MONITOR_OFFSET 0x00000400 /* i960 monitor interface */ +#define FORE200E_CP_QUEUES_OFFSET 0x00004d40 /* cp resident queues */ + + +/* PCA-200E memory layout */ + +#define PCA200E_IOSPACE_LENGTH 0x00200000 + +#define PCA200E_HCR_OFFSET 0x00100000 /* board control register */ +#define PCA200E_IMR_OFFSET 0x00100004 /* host IRQ mask register */ +#define PCA200E_PSR_OFFSET 0x00100008 /* PCI specific register */ + + +/* PCA-200E host control register */ + +#define PCA200E_HCR_RESET (1<<0) /* read / write */ +#define PCA200E_HCR_HOLD_LOCK (1<<1) /* read / write */ +#define PCA200E_HCR_I960FAIL (1<<2) /* read */ +#define PCA200E_HCR_INTRB (1<<2) /* write */ +#define PCA200E_HCR_HOLD_ACK (1<<3) /* read */ +#define PCA200E_HCR_INTRA (1<<3) /* write */ +#define PCA200E_HCR_OUTFULL (1<<4) /* read */ +#define PCA200E_HCR_CLRINTR (1<<4) /* write */ +#define PCA200E_HCR_ESPHOLD (1<<5) /* read */ +#define PCA200E_HCR_INFULL (1<<6) /* read */ +#define PCA200E_HCR_TESTMODE (1<<7) /* read */ + + +/* PCA-200E PCI bus interface regs (offsets in PCI config space) */ + +#define PCA200E_PCI_LATENCY 0x40 /* maximum slave latenty */ +#define PCA200E_PCI_MASTER_CTRL 0x41 /* master control */ +#define PCA200E_PCI_THRESHOLD 0x42 /* burst / continuous req threshold */ + +/* PBI master control register */ + +#define PCA200E_CTRL_DIS_CACHE_RD (1<<0) /* disable cache-line reads */ +#define PCA200E_CTRL_DIS_WRT_INVAL (1<<1) /* disable writes and invalidates */ +#define PCA200E_CTRL_2_CACHE_WRT_INVAL (1<<2) /* require 2 cache-lines for writes and invalidates */ +#define PCA200E_CTRL_IGN_LAT_TIMER (1<<3) /* ignore the latency timer */ +#define PCA200E_CTRL_ENA_CONT_REQ_MODE (1<<4) /* enable continuous request mode */ +#define PCA200E_CTRL_LARGE_PCI_BURSTS (1<<5) /* force large PCI bus bursts */ +#define PCA200E_CTRL_CONVERT_ENDIAN (1<<6) /* convert endianess of slave RAM accesses */ + + + +#define SBA200E_PROM_NAME "FORE,sba-200e" /* device name in openprom tree */ + + +/* size of SBA-200E registers */ + +#define SBA200E_HCR_LENGTH 4 +#define SBA200E_BSR_LENGTH 4 +#define SBA200E_ISR_LENGTH 4 +#define SBA200E_RAM_LENGTH 0x40000 + + +/* SBA-200E SBUS burst transfer size register */ + +#define SBA200E_BSR_BURST4 0x04 +#define SBA200E_BSR_BURST8 0x08 +#define SBA200E_BSR_BURST16 0x10 + + +/* SBA-200E host control register */ + +#define SBA200E_HCR_RESET (1<<0) /* read / write (sticky) */ +#define SBA200E_HCR_HOLD_LOCK (1<<1) /* read / write (sticky) */ +#define SBA200E_HCR_I960FAIL (1<<2) /* read */ +#define SBA200E_HCR_I960SETINTR (1<<2) /* write */ +#define SBA200E_HCR_OUTFULL (1<<3) /* read */ +#define SBA200E_HCR_INTR_CLR (1<<3) /* write */ +#define SBA200E_HCR_INTR_ENA (1<<4) /* read / write (sticky) */ +#define SBA200E_HCR_ESPHOLD (1<<5) /* read */ +#define SBA200E_HCR_INFULL (1<<6) /* read */ +#define SBA200E_HCR_TESTMODE (1<<7) /* read */ +#define SBA200E_HCR_INTR_REQ (1<<8) /* read */ + +#define SBA200E_HCR_STICKY (SBA200E_HCR_RESET | SBA200E_HCR_HOLD_LOCK | SBA200E_HCR_INTR_ENA) + + +#endif /* __KERNEL__ */ +#endif /* _FORE200E_H */ |