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- Use __FXP_BITFIELDX macros to make the configuration bitfield

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endian safe.
- Change some u_int to u_int8_t which make more sense here since
  we're really defining bytes.  That produces the same code due to
  how bitfields work.
- Add the definition of the vlan_drop_en bit (not used yet).
- Add some useful comments.

Obtained from:	NetBSD
This commit is contained in:
Maxime Henrion 2003-04-05 23:46:58 +00:00
parent cc9beb7b77
commit 467295e056
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=113151
1 changed files with 99 additions and 81 deletions
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180
sys/dev/fxp/if_fxpreg.h
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@ -121,93 +121,111 @@ struct fxp_cb_ias {
u_int32_t link_addr;
u_int8_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 {
u_int16_t cb_status;
u_int16_t cb_command;
u_int32_t link_addr;
u_int byte_count:6,
:2;
u_int rx_fifo_limit:4,
tx_fifo_limit:3,
:1;
/* Bytes 0 - 21 -- common to all i8255x */
u_int8_t __FXP_BITFIELD2(byte_count:6, :2);
u_int8_t __FXP_BITFIELD3(rx_fifo_limit:4, tx_fifo_limit:3, :1);
u_int8_t adaptive_ifs;
u_int 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 rx_dma_bytecount:7,
:1;
u_int tx_dma_bytecount:7,
dma_mbce:1;
u_int 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 disc_short_rx:1,
underrun_retry:2,
:2,
ext_rfa:1, /* 550 */
two_frames:1, /* 8,9 */
dyn_tbd:1; /* 8,9 */
u_int mediatype:1, /* 7 */
:6,
csma_dis:1; /* 8,9 */
u_int 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 :3,
nsai:1,
preamble_length:2,
loopback:2;
u_int linear_priority:3, /* 7 */
:5;
u_int linear_pri_mode:1, /* 7 */
:3,
interfrm_spacing:4;
u_int :8;
u_int :8;
u_int 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 stripping:1,
padding:1,
rcv_crc_xfer:1,
long_rx_en:1, /* 8,9 */
pri_fc_thresh:3, /* 8,9 */
:1;
u_int 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 :5,
pri_fc_loc:1, /* 8,9 */
multi_ia:1,
:1;
u_int :3,
mc_all:1,
:4;
u_int8_t gamla_rx:1; /* 550 */
u_int8_t pad[9]; /* 550 */
u_int8_t __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_int8_t __FXP_BITFIELD2(rx_dma_bytecount:7, :1);
u_int8_t __FXP_BITFIELD2(tx_dma_bytecount:7, dma_mbce:1);
u_int8_t __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_int8_t __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_int8_t __FXP_BITFIELD3(mediatype:1, /* 7 */
:6,
csma_dis:1); /* 8,9 */
u_int8_t __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_int8_t __FXP_BITFIELD4(:3,
nsai:1,
preamble_length:2,
loopback:2);
u_int8_t __FXP_BITFIELD2(linear_priority:3, /* 7 */
:5);
u_int8_t __FXP_BITFIELD3(linear_pri_mode:1, /* 7 */
:3,
interfrm_spacing:4);
u_int8_t :8;
u_int8_t :8;
u_int8_t __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_int8_t fc_delay_lsb:8; /* 8,9 */
u_int8_t fc_delay_msb:8; /* 8,9 */
u_int8_t __FXP_BITFIELD6(stripping:1,
padding:1,
rcv_crc_xfer:1,
long_rx_en:1, /* 8,9 */
pri_fc_thresh:3, /* 8,9 */
:1);
u_int8_t __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_int8_t __FXP_BITFIELD4(:5,
pri_fc_loc:1, /* 8,9 */
multi_ia:1,
:1);
u_int8_t __FXP_BITFIELD3(:3, mc_all:1, :4);
/* Bytes 22 - 31 -- i82550 only */
u_int8_t __FXP_BITFIELD3(gamla_rx:1,
vlan_drop_en:1,
:6);
u_int8_t pad[9];
};
#define MAXMCADDR 80