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freebsd-dev/sys/dev/fxp/if_fxpreg.h
Mark Johnston 0e4a3d93ee Remove a use of a negative array index from fxp(4). 
This fixes a warning seen when compiling amd64 GENERIC with clang 7.
Also remove the workaround added in r337324.  clang 7 and gcc 4.2
generate the same code with or without the code change.

Reviewed by:	imp (previous version)
MFC after:	3 days
Differential Revision:	https://reviews.freebsd.org/D18603
2018-12-19 04:54:32 +00:00

508 lines
15 KiB
C
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/*-
* SPDX-License-Identifier: BSD-2-Clause-NetBSD
*
* Copyright (c) 1995, David Greenman
* Copyright (c) 2001 Jonathan Lemon <jlemon@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#define FXP_PCI_MMBA 0x10
#define FXP_PCI_IOBA 0x14
/*
* Control/status registers.
*/
#define FXP_CSR_SCB_RUSCUS 0 /* scb_rus/scb_cus (1 byte) */
#define FXP_CSR_SCB_STATACK 1 /* scb_statack (1 byte) */
#define FXP_CSR_SCB_COMMAND 2 /* scb_command (1 byte) */
#define FXP_CSR_SCB_INTRCNTL 3 /* scb_intrcntl (1 byte) */
#define FXP_CSR_SCB_GENERAL 4 /* scb_general (4 bytes) */
#define FXP_CSR_PORT 8 /* port (4 bytes) */
#define FXP_CSR_FLASHCONTROL 12 /* flash control (2 bytes) */
#define FXP_CSR_EEPROMCONTROL 14 /* eeprom control (2 bytes) */
#define FXP_CSR_MDICONTROL 16 /* mdi control (4 bytes) */
#define FXP_CSR_FC_THRESH 0x19 /* flow control (1 byte) */
#define FXP_CSR_FC_STATUS 0x1A /* flow control status (1 byte) */
#define FXP_CSR_PMDR 0x1B /* power management driver (1 byte) */
#define FXP_CSR_GENCONTROL 0x1C /* general control (1 byte) */
/*
* FOR REFERENCE ONLY, the old definition of FXP_CSR_SCB_RUSCUS:
*
* volatile uint8_t :2,
* scb_rus:4,
* scb_cus:2;
*/
#define FXP_PORT_SOFTWARE_RESET 0
#define FXP_PORT_SELFTEST 1
#define FXP_PORT_SELECTIVE_RESET 2
#define FXP_PORT_DUMP 3
#define FXP_SCB_RUS_IDLE 0
#define FXP_SCB_RUS_SUSPENDED 1
#define FXP_SCB_RUS_NORESOURCES 2
#define FXP_SCB_RUS_READY 4
#define FXP_SCB_RUS_SUSP_NORBDS 9
#define FXP_SCB_RUS_NORES_NORBDS 10
#define FXP_SCB_RUS_READY_NORBDS 12
#define FXP_SCB_CUS_IDLE 0
#define FXP_SCB_CUS_SUSPENDED 1
#define FXP_SCB_CUS_ACTIVE 2
#define FXP_SCB_INTR_DISABLE 0x01 /* Disable all interrupts */
#define FXP_SCB_INTR_SWI 0x02 /* Generate SWI */
#define FXP_SCB_INTMASK_FCP 0x04
#define FXP_SCB_INTMASK_ER 0x08
#define FXP_SCB_INTMASK_RNR 0x10
#define FXP_SCB_INTMASK_CNA 0x20
#define FXP_SCB_INTMASK_FR 0x40
#define FXP_SCB_INTMASK_CXTNO 0x80
#define FXP_SCB_STATACK_FCP 0x01 /* Flow Control Pause */
#define FXP_SCB_STATACK_ER 0x02 /* Early Receive */
#define FXP_SCB_STATACK_SWI 0x04
#define FXP_SCB_STATACK_MDI 0x08
#define FXP_SCB_STATACK_RNR 0x10
#define FXP_SCB_STATACK_CNA 0x20
#define FXP_SCB_STATACK_FR 0x40
#define FXP_SCB_STATACK_CXTNO 0x80
#define FXP_SCB_COMMAND_CU_NOP 0x00
#define FXP_SCB_COMMAND_CU_START 0x10
#define FXP_SCB_COMMAND_CU_RESUME 0x20
#define FXP_SCB_COMMAND_CU_DUMP_ADR 0x40
#define FXP_SCB_COMMAND_CU_DUMP 0x50
#define FXP_SCB_COMMAND_CU_BASE 0x60
#define FXP_SCB_COMMAND_CU_DUMPRESET 0x70
#define FXP_SCB_COMMAND_RU_NOP 0
#define FXP_SCB_COMMAND_RU_START 1
#define FXP_SCB_COMMAND_RU_RESUME 2
#define FXP_SCB_COMMAND_RU_ABORT 4
#define FXP_SCB_COMMAND_RU_LOADHDS 5
#define FXP_SCB_COMMAND_RU_BASE 6
#define FXP_SCB_COMMAND_RU_RBDRESUME 7
/*
* Command block definitions
*/
struct fxp_cb_nop {
uint16_t cb_status;
uint16_t cb_command;
uint32_t link_addr;
};
struct fxp_cb_ias {
uint16_t cb_status;
uint16_t cb_command;
uint32_t link_addr;
uint8_t macaddr[6];
};
/* I hate bit-fields :-( */
#if BYTE_ORDER == LITTLE_ENDIAN
#define __FXP_BITFIELD2(a, b) a, b
#define __FXP_BITFIELD3(a, b, c) a, b, c
#define __FXP_BITFIELD4(a, b, c, d) a, b, c, d
#define __FXP_BITFIELD5(a, b, c, d, e) a, b, c, d, e
#define __FXP_BITFIELD6(a, b, c, d, e, f) a, b, c, d, e, f
#define __FXP_BITFIELD7(a, b, c, d, e, f, g) a, b, c, d, e, f, g
#define __FXP_BITFIELD8(a, b, c, d, e, f, g, h) a, b, c, d, e, f, g, h
#else
#define __FXP_BITFIELD2(a, b) b, a
#define __FXP_BITFIELD3(a, b, c) c, b, a
#define __FXP_BITFIELD4(a, b, c, d) d, c, b, a
#define __FXP_BITFIELD5(a, b, c, d, e) e, d, c, b, a
#define __FXP_BITFIELD6(a, b, c, d, e, f) f, e, d, c, b, a
#define __FXP_BITFIELD7(a, b, c, d, e, f, g) g, f, e, d, c, b, a
#define __FXP_BITFIELD8(a, b, c, d, e, f, g, h) h, g, f, e, d, c, b, a
#endif
struct fxp_cb_config {
uint16_t cb_status;
uint16_t cb_command;
uint32_t link_addr;
/* Bytes 0 - 21 -- common to all i8255x */
u_int __FXP_BITFIELD2(byte_count:6, :2);
u_int __FXP_BITFIELD3(rx_fifo_limit:4, tx_fifo_limit:3, :1);
uint8_t adaptive_ifs;
u_int __FXP_BITFIELD5(mwi_enable:1, /* 8,9 */
type_enable:1, /* 8,9 */
read_align_en:1, /* 8,9 */
end_wr_on_cl:1, /* 8,9 */
:4);
u_int __FXP_BITFIELD2(rx_dma_bytecount:7, :1);
u_int __FXP_BITFIELD2(tx_dma_bytecount:7, dma_mbce:1);
u_int __FXP_BITFIELD8(late_scb:1, /* 7 */
direct_dma_dis:1, /* 8,9 */
tno_int_or_tco_en:1, /* 7,9 */
ci_int:1,
ext_txcb_dis:1, /* 8,9 */
ext_stats_dis:1, /* 8,9 */
keep_overrun_rx:1,
save_bf:1);
u_int __FXP_BITFIELD6(disc_short_rx:1,
underrun_retry:2,
:2,
ext_rfa:1, /* 550 */
two_frames:1, /* 8,9 */
dyn_tbd:1); /* 8,9 */
u_int __FXP_BITFIELD3(mediatype:1, /* 7 */
:6,
csma_dis:1); /* 8,9 */
u_int __FXP_BITFIELD6(tcp_udp_cksum:1, /* 9 */
:3,
vlan_tco:1, /* 8,9 */
link_wake_en:1, /* 8,9 */
arp_wake_en:1, /* 8 */
mc_wake_en:1); /* 8 */
u_int __FXP_BITFIELD4(:3,
nsai:1,
preamble_length:2,
loopback:2);
u_int __FXP_BITFIELD2(linear_priority:3, /* 7 */
:5);
u_int __FXP_BITFIELD3(linear_pri_mode:1, /* 7 */
:3,
interfrm_spacing:4);
u_int :8;
u_int :8;
u_int __FXP_BITFIELD8(promiscuous:1,
bcast_disable:1,
wait_after_win:1, /* 8,9 */
:1,
ignore_ul:1, /* 8,9 */
crc16_en:1, /* 9 */
:1,
crscdt:1);
u_int fc_delay_lsb:8; /* 8,9 */
u_int fc_delay_msb:8; /* 8,9 */
u_int __FXP_BITFIELD6(stripping:1,
padding:1,
rcv_crc_xfer:1,
long_rx_en:1, /* 8,9 */
pri_fc_thresh:3, /* 8,9 */
:1);
u_int __FXP_BITFIELD8(ia_wake_en:1, /* 8 */
magic_pkt_dis:1, /* 8,9,!9ER */
tx_fc_dis:1, /* 8,9 */
rx_fc_restop:1, /* 8,9 */
rx_fc_restart:1, /* 8,9 */
fc_filter:1, /* 8,9 */
force_fdx:1,
fdx_pin_en:1);
u_int __FXP_BITFIELD4(:5,
pri_fc_loc:1, /* 8,9 */
multi_ia:1,
:1);
u_int __FXP_BITFIELD3(:3, mc_all:1, :4);
/* Bytes 22 - 31 -- i82550 only */
u_int __FXP_BITFIELD3(gamla_rx:1,
vlan_strip_en:1,
:6);
uint8_t pad[9];
};
#define MAXMCADDR 80
struct fxp_cb_mcs {
uint16_t cb_status;
uint16_t cb_command;
uint32_t link_addr;
uint16_t mc_cnt;
uint8_t mc_addr[MAXMCADDR][6];
};
#define MAXUCODESIZE 192
struct fxp_cb_ucode {
uint16_t cb_status;
uint16_t cb_command;
uint32_t link_addr;
uint32_t ucode[MAXUCODESIZE];
};
/*
* Number of DMA segments in a TxCB.
*/
#define FXP_NTXSEG 35
struct fxp_tbd {
uint32_t tb_addr;
uint32_t tb_size;
};
struct fxp_ipcb {
/*
* The following fields are valid only when
* using the IPCB command block for TX checksum offload
* (and TCP large send, VLANs, and (I think) IPsec). To use
* them, you must enable extended TxCBs (available only
* on the 82559 and later) and use the IPCBXMIT command.
* Note that Intel defines the IPCB to be 32 bytes long,
* the last 8 bytes of which comprise the first entry
* in the TBD array (see note below). This means we only
* have to define 8 extra bytes here.
*/
uint16_t ipcb_schedule_low;
uint8_t ipcb_ip_schedule;
uint8_t ipcb_ip_activation_high;
uint16_t ipcb_vlan_id;
uint8_t ipcb_ip_header_offset;
uint8_t ipcb_tcp_header_offset;
};
struct fxp_cb_tx {
uint16_t cb_status;
uint16_t cb_command;
uint32_t link_addr;
union {
struct {
uint32_t tbd_array_addr;
uint16_t byte_count;
uint8_t tx_threshold;
uint8_t tbd_number;
};
struct fxp_tbd tbdtso;
};
/*
* The following structure isn't actually part of the TxCB,
* unless the extended TxCB feature is being used. In this
* case, the first two elements of the structure below are
* fetched along with the TxCB.
*/
union {
struct fxp_ipcb ipcb;
struct fxp_tbd tbd[FXP_NTXSEG + 1];
} tx_cb_u;
};
#define tbd tx_cb_u.tbd
#define ipcb_schedule_low tx_cb_u.ipcb.ipcb_schedule_low
#define ipcb_ip_schedule tx_cb_u.ipcb.ipcb_ip_schedule
#define ipcb_ip_activation_high tx_cb_u.ipcb.ipcb_ip_activation_high
#define ipcb_vlan_id tx_cb_u.ipcb.ipcb_vlan_id
#define ipcb_ip_header_offset tx_cb_u.ipcb.ipcb_ip_header_offset
#define ipcb_tcp_header_offset tx_cb_u.ipcb.ipcb_tcp_header_offset
/*
* IPCB field definitions
*/
#define FXP_IPCB_IP_CHECKSUM_ENABLE 0x10
#define FXP_IPCB_TCPUDP_CHECKSUM_ENABLE 0x20
#define FXP_IPCB_TCP_PACKET 0x40
#define FXP_IPCB_LARGESEND_ENABLE 0x80
#define FXP_IPCB_HARDWAREPARSING_ENABLE 0x01
#define FXP_IPCB_INSERTVLAN_ENABLE 0x02
/*
* Control Block (CB) definitions
*/
/* status */
#define FXP_CB_STATUS_OK 0x2000
#define FXP_CB_STATUS_C 0x8000
/* commands */
#define FXP_CB_COMMAND_NOP 0x0
#define FXP_CB_COMMAND_IAS 0x1
#define FXP_CB_COMMAND_CONFIG 0x2
#define FXP_CB_COMMAND_MCAS 0x3
#define FXP_CB_COMMAND_XMIT 0x4
#define FXP_CB_COMMAND_UCODE 0x5
#define FXP_CB_COMMAND_DUMP 0x6
#define FXP_CB_COMMAND_DIAG 0x7
#define FXP_CB_COMMAND_LOADFILT 0x8
#define FXP_CB_COMMAND_IPCBXMIT 0x9
/* command flags */
#define FXP_CB_COMMAND_SF 0x0008 /* simple/flexible mode */
#define FXP_CB_COMMAND_I 0x2000 /* generate interrupt on completion */
#define FXP_CB_COMMAND_S 0x4000 /* suspend on completion */
#define FXP_CB_COMMAND_EL 0x8000 /* end of list */
/*
* RFA definitions
*/
struct fxp_rfa {
uint16_t rfa_status;
uint16_t rfa_control;
uint32_t link_addr;
uint32_t rbd_addr;
uint16_t actual_size;
uint16_t size;
/*
* The following fields are only available when using
* extended receive mode on an 82550/82551 chipset.
*/
uint16_t rfax_vlan_id;
uint8_t rfax_rx_parser_sts;
uint8_t rfax_rsvd0;
uint16_t rfax_security_sts;
uint8_t rfax_csum_sts;
uint8_t rfax_zerocopy_sts;
uint8_t rfax_pad[8];
} __packed;
#define FXP_RFAX_LEN 16
#define FXP_RFA_STATUS_RCOL 0x0001 /* receive collision */
#define FXP_RFA_STATUS_IAMATCH 0x0002 /* 0 = matches station address */
#define FXP_RFA_STATUS_NOAMATCH 0x0004 /* 1 = doesn't match anything */
#define FXP_RFA_STATUS_PARSE 0x0008 /* pkt parse ok (82550/1 only) */
#define FXP_RFA_STATUS_S4 0x0010 /* receive error from PHY */
#define FXP_RFA_STATUS_TL 0x0020 /* type/length */
#define FXP_RFA_STATUS_FTS 0x0080 /* frame too short */
#define FXP_RFA_STATUS_OVERRUN 0x0100 /* DMA overrun */
#define FXP_RFA_STATUS_RNR 0x0200 /* no resources */
#define FXP_RFA_STATUS_ALIGN 0x0400 /* alignment error */
#define FXP_RFA_STATUS_CRC 0x0800 /* CRC error */
#define FXP_RFA_STATUS_VLAN 0x1000 /* VLAN tagged frame */
#define FXP_RFA_STATUS_OK 0x2000 /* packet received okay */
#define FXP_RFA_STATUS_C 0x8000 /* packet reception complete */
#define FXP_RFA_CONTROL_SF 0x08 /* simple/flexible memory mode */
#define FXP_RFA_CONTROL_H 0x10 /* header RFD */
#define FXP_RFA_CONTROL_S 0x4000 /* suspend after reception */
#define FXP_RFA_CONTROL_EL 0x8000 /* end of list */
/* Bits in the 'csum_sts' byte */
#define FXP_RFDX_CS_TCPUDP_CSUM_BIT_VALID 0x10
#define FXP_RFDX_CS_TCPUDP_CSUM_VALID 0x20
#define FXP_RFDX_CS_IP_CSUM_BIT_VALID 0x01
#define FXP_RFDX_CS_IP_CSUM_VALID 0x02
/* Bits in the 'packet parser' byte */
#define FXP_RFDX_P_PARSE_BIT 0x08
#define FXP_RFDX_P_CSUM_PROTOCOL_MASK 0x03
#define FXP_RFDX_P_TCP_PACKET 0x00
#define FXP_RFDX_P_UDP_PACKET 0x01
#define FXP_RFDX_P_IP_PACKET 0x03
/*
* Statistics dump area definitions
*/
struct fxp_stats {
uint32_t tx_good;
uint32_t tx_maxcols;
uint32_t tx_latecols;
uint32_t tx_underruns;
uint32_t tx_lostcrs;
uint32_t tx_deffered;
uint32_t tx_single_collisions;
uint32_t tx_multiple_collisions;
uint32_t tx_total_collisions;
uint32_t rx_good;
uint32_t rx_crc_errors;
uint32_t rx_alignment_errors;
uint32_t rx_rnr_errors;
uint32_t rx_overrun_errors;
uint32_t rx_cdt_errors;
uint32_t rx_shortframes;
uint32_t tx_pause;
uint32_t rx_pause;
uint32_t rx_controls;
uint16_t tx_tco;
uint16_t rx_tco;
uint32_t completion_status;
uint32_t reserved0;
uint32_t reserved1;
uint32_t reserved2;
};
#define FXP_STATS_DUMP_COMPLETE 0xa005
#define FXP_STATS_DR_COMPLETE 0xa007
/*
* Serial EEPROM control register bits
*/
#define FXP_EEPROM_EESK 0x01 /* shift clock */
#define FXP_EEPROM_EECS 0x02 /* chip select */
#define FXP_EEPROM_EEDI 0x04 /* data in */
#define FXP_EEPROM_EEDO 0x08 /* data out */
/*
* Serial EEPROM opcodes, including start bit
*/
#define FXP_EEPROM_OPC_ERASE 0x4
#define FXP_EEPROM_OPC_WRITE 0x5
#define FXP_EEPROM_OPC_READ 0x6
/*
* EEPROM map
*/
#define FXP_EEPROM_MAP_IA0 0x00 /* Station address */
#define FXP_EEPROM_MAP_IA1 0x01
#define FXP_EEPROM_MAP_IA2 0x02
#define FXP_EEPROM_MAP_COMPAT 0x03 /* Compatibility */
#define FXP_EEPROM_MAP_CNTR 0x05 /* Controller/connector type */
#define FXP_EEPROM_MAP_PRI_PHY 0x06 /* Primary PHY record */
#define FXP_EEPROM_MAP_SEC_PHY 0x07 /* Secondary PHY record */
#define FXP_EEPROM_MAP_PWA0 0x08 /* Printed wire assembly num. */
#define FXP_EEPROM_MAP_PWA1 0x09 /* Printed wire assembly num. */
#define FXP_EEPROM_MAP_ID 0x0A /* EEPROM ID */
#define FXP_EEPROM_MAP_SUBSYS 0x0B /* Subsystem ID */
#define FXP_EEPROM_MAP_SUBVEN 0x0C /* Subsystem vendor ID */
#define FXP_EEPROM_MAP_CKSUM64 0x3F /* 64-word EEPROM checksum */
#define FXP_EEPROM_MAP_CKSUM256 0xFF /* 256-word EEPROM checksum */
/*
* Management Data Interface opcodes
*/
#define FXP_MDI_WRITE 0x1
#define FXP_MDI_READ 0x2
/*
* PHY device types
*/
#define FXP_PHY_DEVICE_MASK 0x3f00
#define FXP_PHY_SERIAL_ONLY 0x8000
#define FXP_PHY_NONE 0
#define FXP_PHY_82553A 1
#define FXP_PHY_82553C 2
#define FXP_PHY_82503 3
#define FXP_PHY_DP83840 4
#define FXP_PHY_80C240 5
#define FXP_PHY_80C24 6
#define FXP_PHY_82555 7
#define FXP_PHY_DP83840A 10
#define FXP_PHY_82555B 11
/*
* Chip revision values.
*/
#define FXP_REV_82557 1 /* catchall 82557 chip type */
#define FXP_REV_82558_A4 4 /* 82558 A4 stepping */
#define FXP_REV_82558_B0 5 /* 82558 B0 stepping */
#define FXP_REV_82559_A0 8 /* 82559 A0 stepping */
#define FXP_REV_82559S_A 9 /* 82559S A stepping */
#define FXP_REV_82550 12
#define FXP_REV_82550_C 13 /* 82550 C stepping */
#define FXP_REV_82551_E 14 /* 82551 */
#define FXP_REV_82551_F 15 /* 82551 */
#define FXP_REV_82551_10 16 /* 82551 */
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