diff options
| -rw-r--r-- | drivers/net/ethernet/brocade/bna/bna_hw_defs.h | 413 |
1 files changed, 413 insertions, 0 deletions
diff --git a/drivers/net/ethernet/brocade/bna/bna_hw_defs.h b/drivers/net/ethernet/brocade/bna/bna_hw_defs.h new file mode 100644 index 000000000000..07bb79289824 --- /dev/null +++ b/drivers/net/ethernet/brocade/bna/bna_hw_defs.h @@ -0,0 +1,413 @@ +/* + * Linux network driver for Brocade Converged Network Adapter. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License (GPL) Version 2 as + * published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ +/* + * Copyright (c) 2005-2011 Brocade Communications Systems, Inc. + * All rights reserved + * www.brocade.com + */ + +/** + * File for interrupt macros and functions + */ + +#ifndef __BNA_HW_DEFS_H__ +#define __BNA_HW_DEFS_H__ + +#include "bfi_reg.h" + +/** + * + * SW imposed limits + * + */ + +#define BFI_ENET_MAX_MCAM 256 + +#define BFI_INVALID_RID -1 + +#define BFI_IBIDX_SIZE 4 + +#define BFI_VLAN_WORD_SHIFT 5 /* 32 bits */ +#define BFI_VLAN_WORD_MASK 0x1F +#define BFI_VLAN_BLOCK_SHIFT 9 /* 512 bits */ +#define BFI_VLAN_BMASK_ALL 0xFF + +#define BFI_COALESCING_TIMER_UNIT 5 /* 5us */ +#define BFI_MAX_COALESCING_TIMEO 0xFF /* in 5us units */ +#define BFI_MAX_INTERPKT_COUNT 0xFF +#define BFI_MAX_INTERPKT_TIMEO 0xF /* in 0.5us units */ +#define BFI_TX_COALESCING_TIMEO 20 /* 20 * 5 = 100us */ +#define BFI_TX_INTERPKT_COUNT 32 +#define BFI_RX_COALESCING_TIMEO 12 /* 12 * 5 = 60us */ +#define BFI_RX_INTERPKT_COUNT 6 /* Pkt Cnt = 6 */ +#define BFI_RX_INTERPKT_TIMEO 3 /* 3 * 0.5 = 1.5us */ + +#define BFI_TXQ_WI_SIZE 64 /* bytes */ +#define BFI_RXQ_WI_SIZE 8 /* bytes */ +#define BFI_CQ_WI_SIZE 16 /* bytes */ +#define BFI_TX_MAX_WRR_QUOTA 0xFFF + +#define BFI_TX_MAX_VECTORS_PER_WI 4 +#define BFI_TX_MAX_VECTORS_PER_PKT 0xFF +#define BFI_TX_MAX_DATA_PER_VECTOR 0xFFFF +#define BFI_TX_MAX_DATA_PER_PKT 0xFFFFFF + +/* Small Q buffer size */ +#define BFI_SMALL_RXBUF_SIZE 128 + +#define BFI_TX_MAX_PRIO 8 +#define BFI_TX_PRIO_MAP_ALL 0xFF + +/* + * + * Register definitions and macros + * + */ + +#define BNA_PCI_REG_CT_ADDRSZ (0x40000) + +#define ct_reg_addr_init(_bna, _pcidev) \ +{ \ + struct bna_reg_offset reg_offset[] = \ + {{HOSTFN0_INT_STATUS, HOSTFN0_INT_MSK}, \ + {HOSTFN1_INT_STATUS, HOSTFN1_INT_MSK}, \ + {HOSTFN2_INT_STATUS, HOSTFN2_INT_MSK}, \ + {HOSTFN3_INT_STATUS, HOSTFN3_INT_MSK} }; \ + \ + (_bna)->regs.fn_int_status = (_pcidev)->pci_bar_kva + \ + reg_offset[(_pcidev)->pci_func].fn_int_status;\ + (_bna)->regs.fn_int_mask = (_pcidev)->pci_bar_kva + \ + reg_offset[(_pcidev)->pci_func].fn_int_mask;\ +} + +#define ct_bit_defn_init(_bna, _pcidev) \ +{ \ + (_bna)->bits.mbox_status_bits = (__HFN_INT_MBOX_LPU0 | \ + __HFN_INT_MBOX_LPU1); \ + (_bna)->bits.mbox_mask_bits = (__HFN_INT_MBOX_LPU0 | \ + __HFN_INT_MBOX_LPU1); \ + (_bna)->bits.error_status_bits = (__HFN_INT_ERR_MASK); \ + (_bna)->bits.error_mask_bits = (__HFN_INT_ERR_MASK); \ + (_bna)->bits.halt_status_bits = __HFN_INT_LL_HALT; \ +} + +#define ct2_reg_addr_init(_bna, _pcidev) \ +{ \ + (_bna)->regs.fn_int_status = (_pcidev)->pci_bar_kva + \ + CT2_HOSTFN_INT_STATUS; \ + (_bna)->regs.fn_int_mask = (_pcidev)->pci_bar_kva + \ + CT2_HOSTFN_INTR_MASK; \ +} + +#define ct2_bit_defn_init(_bna, _pcidev) \ +{ \ + (_bna)->bits.mbox_status_bits = (__HFN_INT_MBOX_LPU0_CT2 | \ + __HFN_INT_MBOX_LPU1_CT2); \ + (_bna)->bits.mbox_mask_bits = (__HFN_INT_MBOX_LPU0_CT2 | \ + __HFN_INT_MBOX_LPU1_CT2); \ + (_bna)->bits.error_status_bits = (__HFN_INT_ERR_MASK_CT2); \ + (_bna)->bits.error_mask_bits = (__HFN_INT_ERR_MASK_CT2); \ + (_bna)->bits.halt_status_bits = __HFN_INT_CPQ_HALT_CT2; \ + (_bna)->bits.halt_mask_bits = __HFN_INT_CPQ_HALT_CT2; \ +} + +#define bna_reg_addr_init(_bna, _pcidev) \ +{ \ + switch ((_pcidev)->device_id) { \ + case PCI_DEVICE_ID_BROCADE_CT: \ + ct_reg_addr_init((_bna), (_pcidev)); \ + ct_bit_defn_init((_bna), (_pcidev)); \ + break; \ + } \ +} + +#define bna_port_id_get(_bna) ((_bna)->ioceth.ioc.port_id) +/** + * + * Interrupt related bits, flags and macros + * + */ + +#define IB_STATUS_BITS 0x0000ffff + +#define BNA_IS_MBOX_INTR(_bna, _intr_status) \ + ((_intr_status) & (_bna)->bits.mbox_status_bits) + +#define BNA_IS_HALT_INTR(_bna, _intr_status) \ + ((_intr_status) & (_bna)->bits.halt_status_bits) + +#define BNA_IS_ERR_INTR(_bna, _intr_status) \ + ((_intr_status) & (_bna)->bits.error_status_bits) + +#define BNA_IS_MBOX_ERR_INTR(_bna, _intr_status) \ + (BNA_IS_MBOX_INTR(_bna, _intr_status) | \ + BNA_IS_ERR_INTR(_bna, _intr_status)) + +#define BNA_IS_INTX_DATA_INTR(_intr_status) \ + ((_intr_status) & IB_STATUS_BITS) + +#define bna_halt_clear(_bna) \ +do { \ + u32 init_halt; \ + init_halt = readl((_bna)->ioceth.ioc.ioc_regs.ll_halt); \ + init_halt &= ~__FW_INIT_HALT_P; \ + writel(init_halt, (_bna)->ioceth.ioc.ioc_regs.ll_halt); \ + init_halt = readl((_bna)->ioceth.ioc.ioc_regs.ll_halt); \ +} while (0) + +#define bna_intx_disable(_bna, _cur_mask) \ +{ \ + (_cur_mask) = readl((_bna)->regs.fn_int_mask); \ + writel(0xffffffff, (_bna)->regs.fn_int_mask); \ +} + +#define bna_intx_enable(bna, new_mask) \ + writel((new_mask), (bna)->regs.fn_int_mask) +#define bna_mbox_intr_disable(bna) \ +do { \ + u32 mask; \ + mask = readl((bna)->regs.fn_int_mask); \ + writel((mask | (bna)->bits.mbox_mask_bits | \ + (bna)->bits.error_mask_bits), (bna)->regs.fn_int_mask); \ + mask = readl((bna)->regs.fn_int_mask); \ +} while (0) + +#define bna_mbox_intr_enable(bna) \ +do { \ + u32 mask; \ + mask = readl((bna)->regs.fn_int_mask); \ + writel((mask & ~((bna)->bits.mbox_mask_bits | \ + (bna)->bits.error_mask_bits)), (bna)->regs.fn_int_mask);\ + mask = readl((bna)->regs.fn_int_mask); \ +} while (0) + +#define bna_intr_status_get(_bna, _status) \ +{ \ + (_status) = readl((_bna)->regs.fn_int_status); \ + if (_status) { \ + writel(((_status) & ~(_bna)->bits.mbox_status_bits), \ + (_bna)->regs.fn_int_status); \ + } \ +} + +/* + * MAX ACK EVENTS : No. of acks that can be accumulated in driver, + * before acking to h/w. The no. of bits is 16 in the doorbell register, + * however we keep this limited to 15 bits. + * This is because around the edge of 64K boundary (16 bits), one + * single poll can make the accumulated ACK counter cross the 64K boundary, + * causing problems, when we try to ack with a value greater than 64K. + * 15 bits (32K) should be large enough to accumulate, anyways, and the max. + * acked events to h/w can be (32K + max poll weight) (currently 64). + */ +#define BNA_IB_MAX_ACK_EVENTS (1 << 15) + +/* These macros build the data portion of the TxQ/RxQ doorbell */ +#define BNA_DOORBELL_Q_PRD_IDX(_pi) (0x80000000 | (_pi)) +#define BNA_DOORBELL_Q_STOP (0x40000000) + +/* These macros build the data portion of the IB doorbell */ +#define BNA_DOORBELL_IB_INT_ACK(_timeout, _events) \ + (0x80000000 | ((_timeout) << 16) | (_events)) +#define BNA_DOORBELL_IB_INT_DISABLE (0x40000000) + +/* Set the coalescing timer for the given ib */ +#define bna_ib_coalescing_timer_set(_i_dbell, _cls_timer) \ + ((_i_dbell)->doorbell_ack = BNA_DOORBELL_IB_INT_ACK((_cls_timer), 0)); + +/* Acks 'events' # of events for a given ib while disabling interrupts */ +#define bna_ib_ack_disable_irq(_i_dbell, _events) \ + (writel(BNA_DOORBELL_IB_INT_ACK(0, (_events)), \ + (_i_dbell)->doorbell_addr)); + +/* Acks 'events' # of events for a given ib */ +#define bna_ib_ack(_i_dbell, _events) \ + (writel(((_i_dbell)->doorbell_ack | (_events)), \ + (_i_dbell)->doorbell_addr)); + +#define bna_ib_start(_bna, _ib, _is_regular) \ +{ \ + u32 intx_mask; \ + struct bna_ib *ib = _ib; \ + if ((ib->intr_type == BNA_INTR_T_INTX)) { \ + bna_intx_disable((_bna), intx_mask); \ + intx_mask &= ~(ib->intr_vector); \ + bna_intx_enable((_bna), intx_mask); \ + } \ + bna_ib_coalescing_timer_set(&ib->door_bell, \ + ib->coalescing_timeo); \ + if (_is_regular) \ + bna_ib_ack(&ib->door_bell, 0); \ +} + +#define bna_ib_stop(_bna, _ib) \ +{ \ + u32 intx_mask; \ + struct bna_ib *ib = _ib; \ + writel(BNA_DOORBELL_IB_INT_DISABLE, \ + ib->door_bell.doorbell_addr); \ + if (ib->intr_type == BNA_INTR_T_INTX) { \ + bna_intx_disable((_bna), intx_mask); \ + intx_mask |= ib->intr_vector; \ + bna_intx_enable((_bna), intx_mask); \ + } \ +} + +#define bna_txq_prod_indx_doorbell(_tcb) \ + (writel(BNA_DOORBELL_Q_PRD_IDX((_tcb)->producer_index), \ + (_tcb)->q_dbell)); + +#define bna_rxq_prod_indx_doorbell(_rcb) \ + (writel(BNA_DOORBELL_Q_PRD_IDX((_rcb)->producer_index), \ + (_rcb)->q_dbell)); + +/** + * + * TxQ, RxQ, CQ related bits, offsets, macros + * + */ + +/* TxQ Entry Opcodes */ +#define BNA_TXQ_WI_SEND (0x402) /* Single Frame Transmission */ +#define BNA_TXQ_WI_SEND_LSO (0x403) /* Multi-Frame Transmission */ +#define BNA_TXQ_WI_EXTENSION (0x104) /* Extension WI */ + +/* TxQ Entry Control Flags */ +#define BNA_TXQ_WI_CF_FCOE_CRC (1 << 8) +#define BNA_TXQ_WI_CF_IPID_MODE (1 << 5) +#define BNA_TXQ_WI_CF_INS_PRIO (1 << 4) +#define BNA_TXQ_WI_CF_INS_VLAN (1 << 3) +#define BNA_TXQ_WI_CF_UDP_CKSUM (1 << 2) +#define BNA_TXQ_WI_CF_TCP_CKSUM (1 << 1) +#define BNA_TXQ_WI_CF_IP_CKSUM (1 << 0) + +#define BNA_TXQ_WI_L4_HDR_N_OFFSET(_hdr_size, _offset) \ + (((_hdr_size) << 10) | ((_offset) & 0x3FF)) + +/* + * Completion Q defines + */ +/* CQ Entry Flags */ +#define BNA_CQ_EF_MAC_ERROR (1 << 0) +#define BNA_CQ_EF_FCS_ERROR (1 << 1) +#define BNA_CQ_EF_TOO_LONG (1 << 2) +#define BNA_CQ_EF_FC_CRC_OK (1 << 3) + +#define BNA_CQ_EF_RSVD1 (1 << 4) +#define BNA_CQ_EF_L4_CKSUM_OK (1 << 5) +#define BNA_CQ_EF_L3_CKSUM_OK (1 << 6) +#define BNA_CQ_EF_HDS_HEADER (1 << 7) + +#define BNA_CQ_EF_UDP (1 << 8) +#define BNA_CQ_EF_TCP (1 << 9) +#define BNA_CQ_EF_IP_OPTIONS (1 << 10) +#define BNA_CQ_EF_IPV6 (1 << 11) + +#define BNA_CQ_EF_IPV4 (1 << 12) +#define BNA_CQ_EF_VLAN (1 << 13) +#define BNA_CQ_EF_RSS (1 << 14) +#define BNA_CQ_EF_RSVD2 (1 << 15) + +#define BNA_CQ_EF_MCAST_MATCH (1 << 16) +#define BNA_CQ_EF_MCAST (1 << 17) +#define BNA_CQ_EF_BCAST (1 << 18) +#define BNA_CQ_EF_REMOTE (1 << 19) + +#define BNA_CQ_EF_LOCAL (1 << 20) + +/** + * + * Data structures + * + */ + +struct bna_reg_offset { + u32 fn_int_status; + u32 fn_int_mask; +}; + +struct bna_bit_defn { + u32 mbox_status_bits; + u32 mbox_mask_bits; + u32 error_status_bits; + u32 error_mask_bits; + u32 halt_status_bits; + u32 halt_mask_bits; +}; + +struct bna_reg { + void __iomem *fn_int_status; + void __iomem *fn_int_mask; +}; + +/* TxQ Vector (a.k.a. Tx-Buffer Descriptor) */ +struct bna_dma_addr { + u32 msb; + u32 lsb; +}; + +struct bna_txq_wi_vector { + u16 reserved; + u16 length; /* Only 14 LSB are valid */ + struct bna_dma_addr host_addr; /* Tx-Buf DMA addr */ +}; + +/** + * TxQ Entry Structure + * + * BEWARE: Load values into this structure with correct endianess. + */ +struct bna_txq_entry { + union { + struct { + u8 reserved; + u8 num_vectors; /* number of vectors present */ + u16 opcode; /* Either */ + /* BNA_TXQ_WI_SEND or */ + /* BNA_TXQ_WI_SEND_LSO */ + u16 flags; /* OR of all the flags */ + u16 l4_hdr_size_n_offset; + u16 vlan_tag; + u16 lso_mss; /* Only 14 LSB are valid */ + u32 frame_length; /* Only 24 LSB are valid */ + } wi; + + struct { + u16 reserved; + u16 opcode; /* Must be */ + /* BNA_TXQ_WI_EXTENSION */ + u32 reserved2[3]; /* Place holder for */ + /* removed vector (12 bytes) */ + } wi_ext; + } hdr; + struct bna_txq_wi_vector vector[4]; +}; + +/* RxQ Entry Structure */ +struct bna_rxq_entry { /* Rx-Buffer */ + struct bna_dma_addr host_addr; /* Rx-Buffer DMA address */ +}; + +/* CQ Entry Structure */ +struct bna_cq_entry { + u32 flags; + u16 vlan_tag; + u16 length; + u32 rss_hash; + u8 valid; + u8 reserved1; + u8 reserved2; + u8 rxq_id; +}; + +#endif /* __BNA_HW_DEFS_H__ */ |