| /* 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 { |
| 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 */ |
