;; Copyright (c) 2004, Endre Kozma <endre.kozma@axelero.hu>
;; 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,
;; 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.
;;
;; 3. The name of the author may not be used to endorse or promote products
;; derived from this software without specific prior written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; ;;
;; 3C59X.INC ;;
;; ;;
;; Ethernet driver for Menuet OS ;;
;; ;;
;; Driver for 3Com fast etherlink 3c59x and ;;
;; etherlink XL 3c900 and 3c905 cards ;;
;; References: ;;
;; www.3Com.com - data sheets ;;
;; DP83840A.pdf - ethernet physical layer ;;
;; 3c59x.c - linux driver ;;
;; ethernet driver template by Mike Hibbett ;;
;; ;;
;; Credits ;;
;; Mike Hibbett, ;;
;; who kindly supplied me with a 3Com905C-TX-M card ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; History
;; =======
;; $Log: 3C59X.INC,v $
;; Revision 1.3 2004/07/11 12:21:12 kozma
;; Support of vortex chips (3c59x) added.
;; Support of 3c920 and 3c982 added.
;; Corrections.
;;
;; Revision 1.2 2004/06/12 19:40:20 kozma
;; Function e3c59x_set_available_media added in order to set
;; the default media in case auto detection finds no valid link.
;; Incorrect mii check removed (3c900 Cyclone works now).
;; Cleanups.
;;
;; Revision 1.1 2004/06/12 18:27:15 kozma
;; Initial revision
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
; comment the next line out if you don't want debug info printed
; on the debug board. This option adds a lot of bytes to the driver
; so it's worth to comment it out.
; E3C59X_DEBUG equ 1
; forcing full duplex mode makes sense at some cards and link types
E3C59X_FORCE_FD equ 1
macro virt_to_dma reg
{
if defined E3C59X_LINUX
sub reg, [virt_addr]
add reg, [dma_addr]
end if
}
macro dma_to_virt reg
{
if defined E3C59X_LINUX
sub reg, [dma_addr]
add reg, [virt_addr]
end if
}
macro zero_to_virt reg
{
if defined E3C59X_LINUX
add reg, [virt_addr]
end if
}
macro virt_to_zero reg
{
if defined E3C59X_LINUX
sub reg, [virt_addr]
end if
}
macro zero_to_dma reg
{
if defined E3C59X_LINUX
add reg, [dma_addr]
end if
}
macro dma_to_zero reg
{
if defined E3C59X_LINUX
sub reg, [dma_addr]
end if
}
macro strtbl name, [string]
{
common
label name dword
forward
local label
dd label
forward
label db string, 0
}
; Ethernet frame symbols
ETH_ALEN equ 6
ETH_HLEN equ (2*ETH_ALEN+2)
ETH_ZLEN equ 60 ; 60 + 4bytes auto payload for
; mininmum 64bytes frame length
; PCI programming
PCI_REG_COMMAND equ 0x4 ; command register
PCI_REG_STATUS equ 0x6 ; status register
PCI_REG_LATENCY equ 0xd ; latency timer register
PCI_REG_CAP_PTR equ 0x34 ; capabilities pointer
PCI_REG_CAPABILITY_ID equ 0x0 ; capapility ID in pm register block
PCI_REG_PM_STATUS equ 0x4 ; power management status register
PCI_REG_PM_CTRL equ 0x4 ; power management control register
PCI_BIT_PIO equ 0 ; bit0: io space control
PCI_BIT_MMIO equ 1 ; bit1: memory space control
PCI_BIT_MASTER equ 2 ; bit2: device acts as a PCI master
; Registers
E3C59X_REG_POWER_MGMT_CTRL equ 0x7c
E3C59X_REG_UP_LIST_PTR equ 0x38
E3C59X_REG_UP_PKT_STATUS equ 0x30
E3C59X_REG_TX_FREE_THRESH equ 0x2f
E3C59X_REG_DN_LIST_PTR equ 0x24
E3C59X_REG_DMA_CTRL equ 0x20
E3C59X_REG_TX_STATUS equ 0x1b
E3C59X_REG_RX_STATUS equ 0x18
E3C59X_REG_TX_DATA equ 0x10
; Common window registers
E3C59X_REG_INT_STATUS equ 0xe
E3C59X_REG_COMMAND equ 0xe
; Register window 7
E3C59X_REG_MASTER_STATUS equ 0xc
E3C59X_REG_POWER_MGMT_EVENT equ 0xc
E3C59X_REG_MASTER_LEN equ 0x6
E3C59X_REG_VLAN_ETHER_TYPE equ 0x4
E3C59X_REG_VLAN_MASK equ 0x0
E3C59X_REG_MASTER_ADDRESS equ 0x0
; Register window 6
E3C59X_REG_BYTES_XMITTED_OK equ 0xc
E3C59X_REG_BYTES_RCVD_OK equ 0xa
E3C59X_REG_UPPER_FRAMES_OK equ 0x9
E3C59X_REG_FRAMES_DEFERRED equ 0x8
E3C59X_REG_FRAMES_RCVD_OK equ 0x7
E3C59X_REG_FRAMES_XMITTED_OK equ 0x6
E3C59X_REG_RX_OVERRUNS equ 0x5
E3C59X_REG_LATE_COLLISIONS equ 0x4
E3C59X_REG_SINGLE_COLLISIONS equ 0x3
E3C59X_REG_MULTIPLE_COLLISIONS equ 0x2
E3C59X_REG_SQE_ERRORS equ 0x1
E3C59X_REG_CARRIER_LOST equ 0x0
; Register window 5
E3C59X_REG_INDICATION_ENABLE equ 0xc
E3C59X_REG_INTERRUPT_ENABLE equ 0xa
E3C59X_REG_TX_RECLAIM_THRESH equ 0x9
E3C59X_REG_RX_FILTER equ 0x8
E3C59X_REG_RX_EARLY_THRESH equ 0x6
E3C59X_REG_TX_START_THRESH equ 0x0
; Register window 4
E3C59X_REG_UPPER_BYTES_OK equ 0xe
E3C59X_REG_BAD_SSD equ 0xc
E3C59X_REG_MEDIA_STATUS equ 0xa
E3C59X_REG_PHYSICAL_MGMT equ 0x8
E3C59X_REG_NETWORK_DIAGNOSTIC equ 0x6
E3C59X_REG_FIFO_DIAGNOSTIC equ 0x4
E3C59X_REG_VCO_DIAGNOSTIC equ 0x2 ; may not supported
; Bits in register window 4
E3C59X_BIT_AUTOSELECT equ 24
; Register window 3
E3C59X_REG_TX_FREE equ 0xc
E3C59X_REG_RX_FREE equ 0xa
E3C59X_REG_MEDIA_OPTIONS equ 0x8
E3C59X_REG_MAC_CONTROL equ 0x6
E3C59X_REG_MAX_PKT_SIZE equ 0x4
E3C59X_REG_INTERNAL_CONFIG equ 0x0
; Register window 2
E3C59X_REG_RESET_OPTIONS equ 0xc
E3C59X_REG_STATION_MASK_HI equ 0xa
E3C59X_REG_STATION_MASK_MID equ 0x8
E3C59X_REG_STATION_MASK_LO equ 0x6
E3C59X_REG_STATION_ADDRESS_HI equ 0x4
E3C59X_REG_STATION_ADDRESS_MID equ 0x2
E3C59X_REG_STATION_ADDRESS_LO equ 0x0
; Register window 1
E3C59X_REG_TRIGGER_BITS equ 0xc
E3C59X_REG_SOS_BITS equ 0xa
E3C59X_REG_WAKE_ON_TIMER equ 0x8
E3C59X_REG_SMB_RXBYTES equ 0x7
E3C59X_REG_SMB_DIAG equ 0x5
E3C59X_REG_SMB_ARB equ 0x4
E3C59X_REG_SMB_STATUS equ 0x2
E3C59X_REG_SMB_ADDRESS equ 0x1
E3C59X_REG_SMB_FIFO_DATA equ 0x0
; Register window 0
E3C59X_REG_EEPROM_DATA equ 0xc
E3C59X_REG_EEPROM_COMMAND equ 0xa
E3C59X_REG_BIOS_ROM_DATA equ 0x8
E3C59X_REG_BIOS_ROM_ADDR equ 0x4
; Physical management bits
E3C59X_BIT_MGMT_DIR equ 2 ; drive with the data written in mgmtData
E3C59X_BIT_MGMT_DATA equ 1 ; MII management data bit
E3C59X_BIT_MGMT_CLK equ 0 ; MII management clock
; MII commands
E3C59X_MII_CMD_MASK equ (1111b shl 10)
E3C59X_MII_CMD_READ equ (0110b shl 10)
E3C59X_MII_CMD_WRITE equ (0101b shl 10)
; MII registers
E3C59X_REG_MII_BMCR equ 0 ; basic mode control register
E3C59X_REG_MII_BMSR equ 1 ; basic mode status register
E3C59X_REG_MII_ANAR equ 4 ; auto negotiation advertisement register
E3C59X_REG_MII_ANLPAR equ 5 ; auto negotiation link partner ability register
E3C59X_REG_MII_ANER equ 6 ; auto negotiation expansion register
; MII bits
E3C59X_BIT_MII_AUTONEG_COMPLETE equ 5 ; auto-negotiation complete
E3C59X_BIT_MII_PREAMBLE_SUPPRESSION equ 6
; eeprom bits and commands
E3C59X_EEPROM_CMD_READ equ 0x80
E3C59X_EEPROM_BIT_BUSY equ 15
; eeprom registers
E3C59X_EEPROM_REG_OEM_NODE_ADDR equ 0xa
E3C59X_EEPROM_REG_CAPABILITIES equ 0x10
; Commands for command register
E3C59X_SELECT_REGISTER_WINDOW equ (1 shl 11)
IS_VORTEX equ 0x1
IS_BOOMERANG equ 0x2
IS_CYCLONE equ 0x4
IS_TORNADO equ 0x8
EEPROM_8BIT equ 0x10
HAS_PWR_CTRL equ 0x20
HAS_MII equ 0x40
HAS_NWAY equ 0x80
HAS_CB_FNS equ 0x100
INVERT_MII_PWR equ 0x200
INVERT_LED_PWR equ 0x400
MAX_COLLISION_RESET equ 0x800
EEPROM_OFFSET equ 0x1000
HAS_HWCKSM equ 0x2000
EXTRA_PREAMBLE equ 0x4000
iglobal
align 4
e3c59x_hw_versions:
dw 0x5900, IS_VORTEX ; 3c590 Vortex 10Mbps
dw 0x5920, IS_VORTEX ; 3c592 EISA 10Mbps Demon/Vortex
dw 0x5970, IS_VORTEX ; 3c597 EISA Fast Demon/Vortex
dw 0x5950, IS_VORTEX ; 3c595 Vortex 100baseTx
dw 0x5951, IS_VORTEX ; 3c595 Vortex 100baseT4
dw 0x5952, IS_VORTEX ; 3c595 Vortex 100base-MII
dw 0x9000, IS_BOOMERANG ; 3c900 Boomerang 10baseT
dw 0x9001, IS_BOOMERANG ; 3c900 Boomerang 10Mbps Combo
dw 0x9004, IS_CYCLONE or HAS_NWAY or HAS_HWCKSM ; 3c900 Cyclone 10Mbps TPO
dw 0x9005, IS_CYCLONE or HAS_HWCKSM ; 3c900 Cyclone 10Mbps Combo
dw 0x9006, IS_CYCLONE or HAS_HWCKSM ; 3c900 Cyclone 10Mbps TPC
dw 0x900A, IS_CYCLONE or HAS_HWCKSM ; 3c900B-FL Cyclone 10base-FL
dw 0x9050, IS_BOOMERANG or HAS_MII ; 3c905 Boomerang 100baseTx
dw 0x9051, IS_BOOMERANG or HAS_MII ; 3c905 Boomerang 100baseT4
dw 0x9055, IS_CYCLONE or HAS_NWAY or HAS_HWCKSM or EXTRA_PREAMBLE ; 3c905B Cyclone 100baseTx
dw 0x9058, IS_CYCLONE or HAS_NWAY or HAS_HWCKSM ; 3c905B Cyclone 10/100/BNC
dw 0x905A, IS_CYCLONE or HAS_HWCKSM ; 3c905B-FX Cyclone 100baseFx
dw 0x9200, IS_TORNADO or HAS_NWAY or HAS_HWCKSM ; 3c905C Tornado
dw 0x9800, IS_CYCLONE or HAS_NWAY or HAS_HWCKSM ; 3c980 Cyclone
dw 0x9805, IS_TORNADO or HAS_NWAY or HAS_HWCKSM ; 3c982 Dual Port Server Cyclone
dw 0x7646, IS_CYCLONE or HAS_NWAY or HAS_HWCKSM ; 3cSOHO100-TX Hurricane
dw 0x5055, IS_CYCLONE or EEPROM_8BIT or HAS_HWCKSM ; 3c555 Laptop Hurricane
dw 0x6055, IS_TORNADO or HAS_NWAY or EEPROM_8BIT or HAS_CB_FNS \
or INVERT_MII_PWR or HAS_HWCKSM ; 3c556 Laptop Tornado
dw 0x6056, IS_TORNADO or HAS_NWAY or EEPROM_OFFSET or HAS_CB_FNS \
or INVERT_MII_PWR or HAS_HWCKSM ; 3c556B Laptop Hurricane
dw 0x5b57, IS_BOOMERANG or HAS_MII or EEPROM_8BIT ; 3c575 [Megahertz] 10/100 LAN CardBus
dw 0x5057, IS_BOOMERANG or HAS_MII or EEPROM_8BIT ; 3c575 Boomerang CardBus
dw 0x5157, IS_CYCLONE or HAS_NWAY or HAS_CB_FNS or EEPROM_8BIT \
or INVERT_LED_PWR or HAS_HWCKSM ; 3CCFE575BT Cyclone CardBus
dw 0x5257, IS_TORNADO or HAS_NWAY or HAS_CB_FNS or EEPROM_8BIT or INVERT_MII_PWR \
or MAX_COLLISION_RESET or HAS_HWCKSM ; 3CCFE575CT Tornado CardBus
dw 0x6560, IS_CYCLONE or HAS_NWAY or HAS_CB_FNS or EEPROM_8BIT or INVERT_MII_PWR \
or INVERT_LED_PWR or HAS_HWCKSM ; 3CCFE656 Cyclone CardBus
dw 0x6562, IS_CYCLONE or HAS_NWAY or HAS_CB_FNS or EEPROM_8BIT or INVERT_MII_PWR \
or INVERT_LED_PWR or HAS_HWCKSM ; 3CCFEM656B Cyclone+Winmodem CardBus
dw 0x6564, IS_TORNADO or HAS_NWAY or HAS_CB_FNS or EEPROM_8BIT or INVERT_MII_PWR \
or MAX_COLLISION_RESET or HAS_HWCKSM ; 3CXFEM656C Tornado+Winmodem CardBus
dw 0x4500, IS_TORNADO or HAS_NWAY or HAS_HWCKSM ; 3c450 HomePNA Tornado
dw 0x9201, IS_TORNADO or HAS_NWAY or HAS_HWCKSM ; 3c920 Tornado
dw 0x1201, IS_TORNADO or HAS_HWCKSM or HAS_NWAY ; 3c982 Hydra Dual Port A
dw 0x1202, IS_TORNADO or HAS_HWCKSM or HAS_NWAY ; 3c982 Hydra Dual Port B
dw 0x9056, IS_CYCLONE or HAS_NWAY or HAS_HWCKSM or EXTRA_PREAMBLE ; 3c905B-T4
dw 0x9210, IS_TORNADO or HAS_NWAY or HAS_HWCKSM ; 3c920B-EMB-WNM Tornado
E3C59X_HW_VERSIONS_SIZE= $-e3c59x_hw_versions
endg
; RX/TX buffers sizes
E3C59X_MAX_ETH_PKT_SIZE equ 1536 ; max packet size
E3C59X_NUM_RX_DESC equ 4 ; a power of 2 number
E3C59X_NUM_TX_DESC equ 4 ; a power of 2 number
E3C59X_RX_BUFFER_SIZE equ (E3C59X_MAX_ETH_FRAME_SIZE*E3C59X_NUM_RX_DESC)
E3C59X_TX_BUFFER_SIZE equ (E3C59X_MAX_ETH_FRAME_SIZE*E3C59X_NUM_TX_DESC)
; Download Packet Descriptor
E3C59X_DPD_DN_NEXT_PTR equ 0
E3C59X_DPD_FRAME_START_HDR equ 4
E3C59X_DPD_DN_FRAG_ADDR equ 8 ; for packet data
E3C59X_DPD_DN_FRAG_LEN equ 12 ; for packet data
E3C59X_DPD_SIZE equ 16 ; a power of 2 number
; Upload Packet Descriptor
E3C59X_UPD_UP_NEXT_PTR equ 0
E3C59X_UPD_PKT_STATUS equ 4
E3C59X_UPD_UP_FRAG_ADDR equ 8 ; for packet data
E3C59X_UPD_UP_FRAG_LEN equ 12 ; for packet data
E3C59X_UPD_SIZE equ 16
; RX/TX buffers
if defined E3C59X_LINUX
E3C59X_MAX_ETH_FRAME_SIZE = 160 ; size of ethernet frame + bytes alignment
e3c59x_rx_buff = 0
else
E3C59X_MAX_ETH_FRAME_SIZE = 1520 ; size of ethernet frame + bytes alignment
e3c59x_rx_buff = eth_data_start
end if
e3c59x_tx_buff = e3c59x_rx_buff+E3C59X_RX_BUFFER_SIZE
e3c59x_dpd_buff = e3c59x_tx_buff+E3C59X_TX_BUFFER_SIZE
e3c59x_upd_buff = e3c59x_dpd_buff+(E3C59X_DPD_SIZE*E3C59X_NUM_TX_DESC)
uglobal
e3c59x_curr_upd: dd 0
e3c59x_prev_dpd: dd 0
e3c59x_prev_tx_frame: dd 0
e3c59x_transmit_function: dd 0
e3c59x_receive_function: dd 0
endg
iglobal
e3c59x_ver_id: db 17
endg
uglobal
e3c59x_full_bus_master: db 0
e3c59x_has_hwcksm: db 0
e3c59x_preamble: db 0
e3c59x_dn_list_ptr_cleared: db 0
e3c59x_self_directed_packet: rb 6
endg
if defined E3C59X_DEBUG
e3c59x_hw_type_str: db "Detected hardware type : ", 0
e3c59x_device_str: db "Device ID : 0x"
e3c59x_device_id_str: db "ffff", 13, 10, 0
e3c59x_vendor_str: db "Vendor ID : 0x"
e3c59x_vendor_id_str: db "ffff", 13, 10, 0
e3c59x_io_info_str: db "IO address : 0x"
e3c59x_io_addr_str: db "ffff", 13, 10, 0
e3c59x_mac_info_str: db "MAC address : "
e3c59x_mac_addr_str: db "ff:ff:ff:ff:ff:ff", 13, 10, 0
e3c59x_boomerang_str: db " (boomerang)", 13, 10, 0
e3c59x_vortex_str: db " (vortex)", 13, 10, 0
e3c59x_link_type_str: db "Established link type : ", 0
e3c59x_new_line_str: db 13, 10, 0
e3c59x_link_type: dd 0
e3c59x_charset: db '0123456789abcdef'
strtbl e3c59x_link_str, \
"No valid link type detected", \
"10BASE-T half duplex", \
"10BASE-T full-duplex", \
"100BASE-TX half duplex", \
"100BASE-TX full duplex", \
"100BASE-T4", \
"100BASE-FX", \
"10Mbps AUI", \
"10Mbps COAX (BNC)", \
"miiDevice - not supported"
strtbl e3c59x_hw_str, \
"3c590 Vortex 10Mbps", \
"3c592 EISA 10Mbps Demon/Vortex", \
"3c597 EISA Fast Demon/Vortex", \
"3c595 Vortex 100baseTx", \
"3c595 Vortex 100baseT4", \
"3c595 Vortex 100base-MII", \
"3c900 Boomerang 10baseT", \
"3c900 Boomerang 10Mbps Combo", \
"3c900 Cyclone 10Mbps TPO", \
"3c900 Cyclone 10Mbps Combo", \
"3c900 Cyclone 10Mbps TPC", \
"3c900B-FL Cyclone 10base-FL", \
"3c905 Boomerang 100baseTx", \
"3c905 Boomerang 100baseT4", \
"3c905B Cyclone 100baseTx", \
"3c905B Cyclone 10/100/BNC", \
"3c905B-FX Cyclone 100baseFx", \
"3c905C Tornado", \
"3c980 Cyclone", \
"3c982 Dual Port Server Cyclone", \
"3cSOHO100-TX Hurricane", \
"3c555 Laptop Hurricane", \
"3c556 Laptop Tornado", \
"3c556B Laptop Hurricane", \
"3c575 [Megahertz] 10/100 LAN CardBus", \
"3c575 Boomerang CardBus", \
"3CCFE575BT Cyclone CardBus", \
"3CCFE575CT Tornado CardBus", \
"3CCFE656 Cyclone CardBus", \
"3CCFEM656B Cyclone+Winmodem CardBus", \
"3CXFEM656C Tornado+Winmodem CardBus", \
"3c450 HomePNA Tornado", \
"3c920 Tornado", \
"3c982 Hydra Dual Port A", \
"3c982 Hydra Dual Port B", \
"3c905B-T4", \
"3c920B-EMB-WNM Tornado"
end if ; defined E3C59X_DEBUG
;***************************************************************************
; Function
; e3c59x_debug
; Description
; prints debug info to the debug board
; Parameters
; ebp - io_addr
; Return value
; Destroyed registers
; eax, ebx, ecx, edx, edi, esi
;
;***************************************************************************
if defined E3C59X_DEBUG
align 4
e3c59x_debug:
pushad
; print device type
mov esi, e3c59x_hw_type_str
call sys_msg_board_str
movzx ecx, byte [e3c59x_ver_id]
mov esi, [e3c59x_hw_str+ecx*4]
call sys_msg_board_str
mov esi, e3c59x_boomerang_str
cmp dword [e3c59x_transmit_function], e3c59x_boomerang_transmit
jz .boomerang
mov esi, e3c59x_vortex_str
.boomerang:
call sys_msg_board_str
; print device/vendor
mov ax, [pci_data+2]
mov cl, 2
mov ebx, e3c59x_device_id_str
call e3c59x_print_hex
mov esi, e3c59x_device_str
call sys_msg_board_str
mov ax, [pci_data]
mov cl, 2
mov ebx, e3c59x_vendor_id_str
call e3c59x_print_hex
mov esi, e3c59x_vendor_str
call sys_msg_board_str
; print io address
mov ax, [io_addr]
mov ebx, e3c59x_io_addr_str
mov cl, 2
call e3c59x_print_hex
mov esi, e3c59x_io_info_str
call sys_msg_board_str
; print MAC address
mov ebx, e3c59x_mac_addr_str
xor ecx, ecx
.mac_loop:
push ecx
mov al, [node_addr+ecx]
mov cl, 1
call e3c59x_print_hex
inc ebx
pop ecx
inc cl
cmp cl, 6
jne .mac_loop
mov esi, e3c59x_mac_info_str
call sys_msg_board_str
; print link type
mov esi, e3c59x_link_type_str
call sys_msg_board_str
xor eax, eax
bsr ax, word [e3c59x_link_type]
jz @f
sub ax, 4
@@:
mov esi, [e3c59x_link_str+eax*4]
call sys_msg_board_str
mov esi, e3c59x_new_line_str
call sys_msg_board_str
popad
ret
;***************************************************************************
; Function
; e3c59x_print_hex
; Description
; prints a hexadecimal value
; Parameters
; eax - value to be printed out
; ebx - where to print
; cl - value size (1, 2, 4)
; Return value
; ebx - end address after the print
; Destroyed registers
; eax, ebx
;
;***************************************************************************
align 4
e3c59x_print_hex:
cmp cl, 1
je .print_byte
cmp cl, 2
jz .print_word
.print_dword:
push eax
bswap eax
xchg ah, al
call .print_word
pop eax
.print_word:
push eax
xchg ah, al
call .print_byte
pop eax
.print_byte:
movzx eax, al
push eax
and al, 0xf0
shr al, 4
mov al, byte [eax+e3c59x_charset]
mov [ebx], al
inc ebx
pop eax
and al, 0x0f
mov al, byte [eax+e3c59x_charset]
mov [ebx], al
inc ebx
ret
end if ; defined E3C59X_DEBUG
;***************************************************************************
; Function
; e3c59x_try_link_detect
; Description
; e3c59x_try_link_detect checks if link exists
; Parameters
; ebp - io_addr
; Return value
; al - 0 ; no link detected
; al - 1 ; link detected
; Destroyed registers
; eax, ebx, ecx, edx, edi, esi
;
;***************************************************************************
align 4
e3c59x_try_link_detect:
; download self-directed packet
mov edi, node_addr
mov bx, 0x0608 ; packet type
mov esi, e3c59x_self_directed_packet
mov ecx, 6 ; 6 + 6 + 2 + 6 = 20 bytes
call dword [e3c59x_transmit_function]
; switch to register window 5
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+5
out dx, ax
; program RxFilter for promiscuous operation
mov ax, (10000b shl 11)
lea edx, [ebp+E3C59X_REG_RX_FILTER]
in al, dx
or al, 1111b
lea edx, [ebp+E3C59X_REG_COMMAND]
out dx, ax
; switch to register window 4
mov ax, E3C59X_SELECT_REGISTER_WINDOW+4
out dx, ax
; check loop
xor ebx, ebx
mov ecx, 0xffff ; 65535 tries
.loop:
push ecx ebx
call dword [e3c59x_receive_function]
pop ebx ecx
test al, al
jnz .finish
.no_packet_received:
; switch to register window 4
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+4
out dx, ax
; read linkbeatdetect
lea edx, [ebp+E3C59X_REG_MEDIA_STATUS]
in ax, dx
test ah, 1000b ; test linkBeatDetect
jnz .link_detected
xor al, al
jmp .finish
.link_detected:
; test carrierSense
test al, 100000b
jz .no_carrier_sense
inc ebx
.no_carrier_sense:
dec ecx
jns .loop
; assume the link is good if 0 < ebx < 25 %
test ebx, ebx
setnz al
jz .finish
cmp ebx, 16384 ; 25%
setb al
.finish:
if defined E3C59X_DEBUG
test al, al
jz @f
or byte [e3c59x_link_type+1], 100b
@@:
end if ; defined E3C59X_DEBUG
ret
;***************************************************************************
; Function
; e3c59x_try_phy
; Description
; e3c59x_try_phy checks the auto-negotiation function
; in the PHY at PHY index. It can also be extended to
; include link detection for non-IEEE 802.3u
; auto-negotiation devices, for instance the BCM5000.
; Parameters
; ah - PHY index
; ebp - io_addr
; Return value
; al - 0 link is auto-negotiated
; al - 1 no link is auto-negotiated
; Destroyed registers
; eax, ebx, ecx, edx, esi
;
;***************************************************************************
align 4
e3c59x_try_phy:
mov al, E3C59X_REG_MII_BMCR
push eax
call e3c59x_mdio_read ; returns with window #4
or ah, 0x80 ; software reset
mov ebx, eax
pop eax
push eax
call e3c59x_mdio_write ; returns with window #4
; wait for reset to complete
mov esi, 2000 ; 2000ms = 2s
call delay_ms
pop eax
push eax
call e3c59x_mdio_read ; returns with window #4
test ah, 0x80
jnz .fail_finish
pop eax
push eax
; wait for a while after reset
mov esi, 20 ; 20ms
call delay_ms
pop eax
push eax
mov al, E3C59X_REG_MII_BMSR
call e3c59x_mdio_read ; returns with window #4
test al, 1 ; extended capability supported?
jz .no_ext_cap
; auto-neg capable?
test al, 1000b
jz .fail_finish ; not auto-negotiation capable
; auto-neg complete?
test al, 100000b
jnz .auto_neg_ok
; restart auto-negotiation
pop eax
push eax
mov al, E3C59X_REG_MII_ANAR
push eax
call e3c59x_mdio_read ; returns with window #4
or ax, (1111b shl 5) ; advertise only 10base-T and 100base-TX
mov ebx, eax
pop eax
call e3c59x_mdio_write ; returns with window #4
pop eax
push eax
call e3c59x_mdio_read ; returns with window #4
mov ebx, eax
or bh, 10010b ; restart auto-negotiation
pop eax
push eax
call e3c59x_mdio_write ; returns with window #4
mov esi, 4000 ; 4000ms = 4 seconds
call delay_ms
pop eax
push eax
mov al, E3C59X_REG_MII_BMSR
call e3c59x_mdio_read ; returns with window #4
test al, 100000b ; auto-neg complete?
jnz .auto_neg_ok
jmp .fail_finish
.auto_neg_ok:
; compare advertisement and link partner ability registers
pop eax
push eax
mov al, E3C59X_REG_MII_ANAR
call e3c59x_mdio_read ; returns with window #4
xchg eax, [esp]
mov al, E3C59X_REG_MII_ANLPAR
call e3c59x_mdio_read ; returns with window #4
pop ebx
and eax, ebx
and eax, 1111100000b
push eax
if defined E3C59X_DEBUG
mov word [e3c59x_link_type], ax
end if ; defined E3C59X_DEBUG
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
; set full-duplex mode
lea edx, [ebp+E3C59X_REG_MAC_CONTROL]
in ax, dx
and ax, not 0x120 ; clear full duplex and flow control
pop ebx
test ebx, (1010b shl 5) ; check for full-duplex
jz .half_duplex
or ax, 0x120 ; set full duplex and flow control
.half_duplex:
out dx, ax
mov al, 1
ret
.no_ext_cap:
; not yet implemented BCM5000
.fail_finish:
pop eax
xor al, al
ret
;***************************************************************************
; Function
; e3c59x_try_mii
; Description
; e3c59x_try_MII checks the on-chip auto-negotiation logic
; or an off-chip MII PHY, depending upon what is set in
; xcvrSelect by the caller.
; It exits when it finds the first device with a good link.
; Parameters
; ebp - io_addr
; Return value
; al - 0
; al - 1
; Destroyed registers
; eax, ebx, ecx, edx, esi
;
;***************************************************************************
align 4
e3c59x_try_mii:
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
lea edx, [ebp+E3C59X_REG_INTERNAL_CONFIG]
in eax, dx
and eax, (1111b shl 20)
cmp eax, (1000b shl 20) ; is auto-negotiation set?
jne .mii_device
; auto-negotiation is set
; switch to register window 4
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+4
out dx, ax
; PHY==24 is the on-chip auto-negotiation logic
; it supports only 10base-T and 100base-TX
mov ah, 24
call e3c59x_try_phy
test al, al
jz .fail_finish
mov cl, 24
jmp .check_preamble
.mii_device:
cmp eax, (0110b shl 20)
jne .fail_finish
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+4
out dx, ax
lea edx, [ebp+E3C59X_REG_PHYSICAL_MGMT]
in ax, dx
and al, (1 shl E3C59X_BIT_MGMT_DIR) or (1 shl E3C59X_BIT_MGMT_DATA)
cmp al, (1 shl E3C59X_BIT_MGMT_DATA)
je .serch_for_phy
xor al, al
ret
.serch_for_phy:
; search for PHY
mov cl, 31
.search_phy_loop:
cmp cl, 24
je .next_phy
mov ah, cl ; ah = phy
mov al, E3C59X_REG_MII_BMCR ; al = Basic Mode Status Register
push ecx
call e3c59x_mdio_read
pop ecx
test ax, ax
jz .next_phy
cmp ax, 0xffff
je .next_phy
mov ah, cl ; ah = phy
push ecx
call e3c59x_try_phy
pop ecx
test al, al
jnz .check_preamble
.next_phy:
dec cl
jns .search_phy_loop
.fail_finish:
xor al, al
ret
; epilog
.check_preamble:
push eax ; eax contains the return value of e3c59x_try_phy
; check hard coded preamble forcing
movzx eax, byte [e3c59x_ver_id]
test word [eax*4+e3c59x_hw_versions+2], EXTRA_PREAMBLE
setnz [e3c59x_preamble] ; force preamble
jnz .finish
; check mii for preamble suppression
mov ah, cl
mov al, E3C59X_REG_MII_BMSR
call e3c59x_mdio_read
test al, 1000000b ; preamble suppression?
setz [e3c59x_preamble] ; no
.finish:
pop eax
ret
;***************************************************************************
; Function
; e3c59x_test_packet
; Description
; e3c59x_try_loopback try a loopback packet for 10BASE2 or AUI port
; Parameters
; ebp - io_addr
; Return value
; al - 0
; al - 1
; Destroyed registers
; eax, ebx, ecx, edx, edi, esi
;
;***************************************************************************
align 4
e3c59x_test_packet:
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
; set fullDuplexEnable in MacControl register
lea edx, [ebp+E3C59X_REG_MAC_CONTROL]
in ax, dx
or ax, 0x120
out dx, ax
; switch to register window 5
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+5
out dx, ax
; set RxFilter to enable individual address matches
mov ax, (10000b shl 11)
lea edx, [ebp+E3C59X_REG_RX_FILTER]
in al, dx
or al, 1
lea edx, [ebp+E3C59X_REG_COMMAND]
out dx, ax
; issue RxEnable and TxEnable
call e3c59x_rx_reset
call e3c59x_tx_reset
; download a self-directed test packet
mov edi, node_addr
mov bx, 0x0608 ; packet type
mov esi, e3c59x_self_directed_packet
mov ecx, 6 ; 6 + 6 + 2 + 6 = 20 bytes
call dword [e3c59x_transmit_function]
; wait for 2s
mov esi, 2000 ; 2000ms = 2s
call delay_ms
; check if self-directed packet is received
call dword [e3c59x_receive_function]
test al, al
jnz .finish
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
; clear fullDuplexEnable in MacControl register
lea edx, [ebp+E3C59X_REG_MAC_CONTROL]
in ax, dx
and ax, not 0x120
out dx, ax
xor al, al
.finish:
ret
;***************************************************************************
; Function
; e3c59x_try_loopback
; Description
; tries a loopback packet for 10BASE2 or AUI port
; Parameters
; al - 0: 10Mbps AUI connector
; 1: 10BASE-2
; ebp - io_addr
; Return value
; al - 0
; al - 1
; Destroyed registers
; eax, ebx, ecx, edx, edi, esi
;
;***************************************************************************
align 4
e3c59x_try_loopback:
push eax
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
pop eax
push eax
if defined E3C59X_DEBUG
mov bl, al
inc bl
shl bl, 3
or byte [e3c59x_link_type+1], bl
end if ; defined E3C59X_DEBUG
test al, al ; aui or coax?
jz .complete_loopback
; enable 100BASE-2 DC-DC converter
mov ax, (10b shl 11) ; EnableDcConverter
out dx, ax
.complete_loopback:
mov cl, 2 ; give a port 3 chances to complete a loopback
.next_try:
push ecx
call e3c59x_test_packet
pop ecx
test al, al
jnz .finish
dec cl
jns .next_try
.finish:
xchg eax, [esp]
test al, al
jz .aui_finish
; issue DisableDcConverter command
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (10111b shl 11)
out dx, ax
.aui_finish:
pop eax ; al contains the result of operation
if defined E3C59X_DEBUG
test al, al
jnz @f
and byte [e3c59x_link_type+1], not 11000b
@@:
end if ; defined E3C59X_DEBUG
ret
;***************************************************************************
; Function
; e3c59x_set_available_media
; Description
; sets the first available media
; Parameters
; ebp - io_addr
; Return value
; al - 0
; al - 1
; Destroyed registers
; eax, edx
;
;***************************************************************************
align 4
e3c59x_set_available_media:
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
lea edx, [ebp+E3C59X_REG_INTERNAL_CONFIG]
in eax, dx
push eax
lea edx, [ebp+E3C59X_REG_MEDIA_OPTIONS]
in ax, dx
test al, 10b
jz @f
; baseTXAvailable
pop eax
and eax, not (1111b shl 20)
or eax, (100b shl 20)
if defined E3C59X_DEBUG & defined E3C59X_FORCE_FD
mov word [e3c59x_link_type], (1 shl 8)
else if defined E3C59X_DEBUG
mov word [e3c59x_link_type], (1 shl 7)
end if
jmp .set_media
@@:
test al, 100b
jz @f
; baseFXAvailable
pop eax
and eax, not (1111b shl 20)
or eax, (101b shl 20)
if defined E3C59X_DEBUG
mov word [e3c59x_link_type], (1 shl 10)
end if
jmp .set_media
@@:
test al, 1000000b
jz @f
; miiDevice
pop eax
and eax, not (1111b shl 20)
or eax, (0110b shl 20)
if defined E3C59X_DEBUG
mov word [e3c59x_link_type], (1 shl 13)
end if
jmp .set_media
@@:
test al, 1000b
jz @f
.set_default:
; 10bTAvailable
pop eax
and eax, not (1111b shl 20)
if defined E3C59X_DEBUG & defined E3C59X_FORCE_FD
mov word [e3c59x_link_type], (1 shl 6)
else if defined E3C59X_DEBUG
mov word [e3c59x_link_type], (1 shl 5)
end if ; E3C59X_FORCE_FD
jmp .set_media
@@:
test al, 10000b
jz @f
; coaxAvailable
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (10b shl 11) ; EnableDcConverter
out dx, ax
pop eax
and eax, not (1111b shl 20)
or eax, (11b shl 20)
if defined E3C59X_DEBUG
mov word [e3c59x_link_type], (1 shl 12)
end if ; defined E3C59X_DEBUG
jmp .set_media
@@:
test al, 10000b
jz .set_default
; auiAvailable
pop eax
and eax, not (1111b shl 20)
or eax, (1 shl 20)
if defined E3C59X_DEBUG
mov word [e3c59x_link_type], (1 shl 11)
end if ; defined E3C59X_DEBUG
.set_media:
lea edx, [ebp+E3C59X_REG_INTERNAL_CONFIG]
out dx, eax
if defined E3C59X_FORCE_FD
; set fullDuplexEnable in MacControl register
lea edx, [ebp+E3C59X_REG_MAC_CONTROL]
in ax, dx
or ax, 0x120
out dx, ax
end if ; E3C59X_FORCE_FD
mov al, 1
ret
;***************************************************************************
; Function
; e3c59x_set_active_port
; Description
; It selects the media port (transceiver) to be used
; Parameters:
; ebp - io_addr
; Return value:
; Destroyed registers
; eax, ebx, ecx, edx, edi, esi
;
;***************************************************************************
align 4
e3c59x_set_active_port:
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
lea edx, [ebp+E3C59X_REG_INTERNAL_CONFIG]
in eax, dx
test eax, (1 shl 24) ; check if autoselect enable
jz .set_first_available_media
; check 100BASE-TX and 10BASE-T
lea edx, [ebp+E3C59X_REG_MEDIA_OPTIONS]
in ax, dx
test al, 1010b ; check whether 100BASE-TX or 10BASE-T available
jz .mii_device ; they are not available
; set auto-negotiation
lea edx, [ebp+E3C59X_REG_INTERNAL_CONFIG]
in eax, dx
and eax, not (1111b shl 20)
or eax, (1000b shl 20)
out dx, eax
call e3c59x_try_mii
test al, al
jz .mii_device
ret
.mii_device:
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
; check for off-chip mii device
lea edx, [ebp+E3C59X_REG_MEDIA_OPTIONS]
in ax, dx
test al, 1000000b ; check miiDevice
jz .base_fx
lea edx, [ebp+E3C59X_REG_INTERNAL_CONFIG]
in eax, dx
and eax, not (1111b shl 20)
or eax, (0110b shl 20) ; set MIIDevice
out dx, eax
call e3c59x_try_mii
test al, al
jz .base_fx
ret
.base_fx:
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
; check for 100BASE-FX
lea edx, [ebp+E3C59X_REG_MEDIA_OPTIONS]
in ax, dx ; read media option register
test al, 100b ; check 100BASE-FX
jz .aui_enable
lea edx, [ebp+E3C59X_REG_INTERNAL_CONFIG]
in eax, dx
and eax, not (1111b shl 20)
or eax, (0101b shl 20) ; set 100base-FX
out dx, eax
call e3c59x_try_link_detect
test al, al
jz .aui_enable
ret
.aui_enable:
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
; check for 10Mbps AUI connector
lea edx, [ebp+E3C59X_REG_MEDIA_OPTIONS]
in ax, dx ; read media option register
test al, 100000b ; check 10Mbps AUI connector
jz .coax_available
lea edx, [ebp+E3C59X_REG_INTERNAL_CONFIG]
in eax, dx
and eax, not (1111b shl 20)
or eax, (0001b shl 20) ; set 10Mbps AUI connector
out dx, eax
xor al, al ; try 10Mbps AUI connector
call e3c59x_try_loopback
test al, al
jz .coax_available
ret
.coax_available:
; switch to register window 3
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+3
out dx, ax
; check for coaxial 10BASE-2 port
lea edx, [ebp+E3C59X_REG_MEDIA_OPTIONS]
in ax, dx ; read media option register
test al, 10000b ; check 10BASE-2
jz .set_first_available_media
lea edx, [ebp+E3C59X_REG_INTERNAL_CONFIG]
in eax, dx
and eax, not (1111b shl 20)
or eax, (0011b shl 20) ; set 10BASE-2
out dx, eax
mov al, 1
call e3c59x_try_loopback
test al, al
jz .set_first_available_media
ret
.set_first_available_media:
jmp e3c59x_set_available_media
;***************************************************************************
; Function
; e3c59x_wake_up
; Description
; set the power state to D0
; Destroyed registers
; eax, ebx, ecx, edx, edi, esi
;
;***************************************************************************
align 4
e3c59x_wake_up:
; wake up - we directly do it by programming PCI
; check if the device is power management capable
mov al, 2
mov ah, [pci_bus]
mov bl, PCI_REG_STATUS
mov bh, [pci_dev]
push eax ebx
call pci_read_reg
test al, 10000b ; is there "new capabilities" linked list?
pop ebx eax
jz .device_awake
; search for power management register
mov al, 1
mov bl, PCI_REG_CAP_PTR
push eax ebx
call pci_read_reg
mov cl, al
cmp cl, 0x3f
pop ebx eax
jbe .device_awake
; traverse the list
mov al, 2
.pm_loop:
mov bl, cl
push eax ebx
call pci_read_reg
cmp al, 1
je .set_pm_state
test ah, ah
mov cl, ah
pop ebx eax
jnz .pm_loop
jmp .device_awake
; waku up the device if necessary
.set_pm_state:
pop ebx eax
add bl, PCI_REG_PM_CTRL
push eax ebx
call pci_read_reg
mov cx, ax
test cl, 3
pop ebx eax
jz .device_awake
and cl, not 11b ; set state to D0
call pci_write_reg
.device_awake:
ret
;***************************************************************************
; Function
; e3c59x_probe
; Description
; Searches for an ethernet card, enables it and clears the rx buffer
; If a card was found, it enables the ethernet -> TCPIP link
; Destroyed registers
; eax, ebx, ecx, edx, edi, esi
;
;***************************************************************************
align 4
e3c59x_probe:
movzx ebp, word [io_addr]
mov al, 2
mov ah, [pci_bus]
mov bh, [pci_dev]
mov bl, PCI_REG_COMMAND
push ebp eax ebx
call pci_read_reg
mov cx, ax
or cl, (1 shl PCI_BIT_MASTER) or (1 shl PCI_BIT_PIO)
and cl, not (1 shl PCI_BIT_MMIO)
pop ebx eax
call pci_write_reg
; wake up the card
call e3c59x_wake_up
pop ebp
; get chip version
mov ax, [pci_data+2]
mov ecx, E3C59X_HW_VERSIONS_SIZE/4-1
.chip_ver_loop:
cmp ax, [e3c59x_hw_versions+ecx*4]
jz .chip_ver_found
dec ecx
jns .chip_ver_loop
xor ecx, ecx
.chip_ver_found:
mov [e3c59x_ver_id], cl
test word [e3c59x_hw_versions+2+ecx*4], HAS_HWCKSM
setnz [e3c59x_has_hwcksm]
; set pci latency for vortex cards
test word [e3c59x_hw_versions+2+ecx*4], IS_VORTEX
jz .not_vortex
mov cx, 11111000b ; 248 = max latency
mov al, 1
mov ah, [pci_bus]
mov bl, PCI_REG_LATENCY
mov bh, [pci_dev]
call pci_write_reg
.not_vortex:
; set RX/TX functions
mov ax, E3C59X_EEPROM_REG_CAPABILITIES
call e3c59x_read_eeprom
test al, 100000b ; full bus master?
setnz [e3c59x_full_bus_master]
jnz .boomerang_func
mov dword [e3c59x_transmit_function], e3c59x_vortex_transmit
mov dword [e3c59x_receive_function], e3c59x_vortex_poll
jmp @f
.boomerang_func: ; full bus master, so use boomerang functions
mov dword [e3c59x_transmit_function], e3c59x_boomerang_transmit
mov dword [e3c59x_receive_function], e3c59x_boomerang_poll
@@:
; read MAC from eeprom
mov ecx, 2
.mac_loop:
lea ax, [E3C59X_EEPROM_REG_OEM_NODE_ADDR+ecx]
call e3c59x_read_eeprom
xchg ah, al ; htons
mov [node_addr+ecx*2], ax
dec ecx
jns .mac_loop
test byte [e3c59x_full_bus_master], 0xff
jz .set_preamble
; switch to register window 2
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+2
out dx, ax
; activate xcvr by setting some magic bits
lea edx, [ebp+E3C59X_REG_RESET_OPTIONS]
in ax, dx
and ax, not 0x4010
movzx ebx, byte [e3c59x_ver_id]
test word [ebx*4+e3c59x_hw_versions+2], INVERT_LED_PWR
jz @f
or al, 0x10
@@:
test word [ebx*4+e3c59x_hw_versions+2], INVERT_MII_PWR
jz @f
or ah, 0x40
@@:
out dx, ax
.set_preamble:
; use preamble as default
mov byte [e3c59x_preamble], 1 ; enable preamble
;***************************************************************************
; Function
; e3c59x_reset
; Description
; Place the chip (ie, the ethernet card) into a virgin state
; Destroyed registers
; eax, ebx, ecx, edx, edi, esi
;
;***************************************************************************
e3c59x_reset:
; issue global reset
call e3c59x_global_reset
; disable interrupts
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (1110b shl 11)
out dx, ax
; enable Statistics
mov ax, (10101b shl 11)
out dx, ax
; set indication
mov ax, (1111b shl 11) or 0x6c6
out dx, ax
; acknowledge (clear) every interrupt indicator
mov ax, (1101b shl 11) or 0x661
out dx, ax
; switch to register window 2
mov ax, E3C59X_SELECT_REGISTER_WINDOW+2
out dx, ax
; write MAC addres back into the station address registers
lea edx, [ebp+E3C59X_REG_STATION_ADDRESS_LO]
mov esi, node_addr
cld
outsw
add edx, 2
outsw
add edx, 2
outsw
add edx, 2
; clear station mask
xor eax, eax
out dx, ax
add edx, 2
out dx, ax
add edx, 2
out dx, ax
; switch to register window 6
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+6
out dx, ax
; clear all statistics by reading
lea edx, [ebp+E3C59X_REG_CARRIER_LOST]
mov cl, 9
.stat_clearing_loop:
in al, dx
inc edx
dec cl
jns .stat_clearing_loop
in ax, dx
add dx, 2
in ax, dx
; switch to register window 4
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+4
out dx, ax
; clear BadSSD
lea edx, [ebp+E3C59X_REG_BAD_SSD]
in al, dx
; clear extra statistics bit in NetworkDiagnostic
lea edx, [ebp+E3C59X_REG_NETWORK_DIAGNOSTIC]
in ax, dx
or ax, 0x0040
out dx, ax
; SetRxEarlyThreshold
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (10001b shl 11)+(E3C59X_MAX_ETH_PKT_SIZE shr 2)
out dx, ax
test byte [e3c59x_full_bus_master], 0xff
jz .skip_boomerang_setting
; set upRxEarlyEnable
lea edx, [ebp+E3C59X_REG_DMA_CTRL]
in eax, dx
or eax, 0x20
out dx, eax
; TxFreeThreshold
lea edx, [ebp+E3C59X_REG_TX_FREE_THRESH]
mov al, (E3C59X_MAX_ETH_PKT_SIZE / 256)
out dx, al
; program DnListPtr
lea edx, [ebp+E3C59X_REG_DN_LIST_PTR]
xor eax, eax
out dx, eax
.skip_boomerang_setting:
; initialization
call e3c59x_rx_reset
call e3c59x_tx_reset
call e3c59x_set_active_port
call e3c59x_rx_reset
call e3c59x_tx_reset
; switch to register window 5
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+5
out dx, ax
; program RxFilter for promiscuous operation
mov ax, (10000b shl 11)
lea edx, [ebp+E3C59X_REG_RX_FILTER]
in al, dx
or al, 1111b
lea edx, [ebp+E3C59X_REG_COMMAND]
out dx, ax
; switch to register window 4
mov ax, E3C59X_SELECT_REGISTER_WINDOW+4
out dx, ax
; wait for linkDetect
lea edx, [ebp+E3C59X_REG_MEDIA_STATUS]
mov cl, 20 ; wait for max 2s
mov esi, 100 ; 100ms
.link_detect_loop:
call delay_ms
in ax, dx
test ah, 1000b ; linkDetect
jnz @f
dec cl
jnz .link_detect_loop
@@:
; Indicate that we have successfully reset the card
mov eax, [pci_data]
mov [eth_status], eax
if defined E3C59X_DEBUG
call e3c59x_debug
end if ; defined E3C59X_DEBUG
ret
;***************************************************************************
; Function
; e3c59x_global_reset
; Description
; resets the device
; Parameters:
; ebp - io_addr
; Return value:
; Destroyed registers
; ax, ecx, edx, esi
;
;***************************************************************************
align 4
e3c59x_global_reset:
; GlobalReset
lea edx, [ebp+E3C59X_REG_COMMAND]
xor eax, eax
; or al, 0x14
out dx, ax
; wait for GlobalReset to complete
mov ecx, 64000
.global_reset_loop:
in ax, dx
test ah, 10000b ; check CmdInProgress
jz .finish
dec ecx
jnz .global_reset_loop
.finish:
; wait for 2 seconds for NIC to boot
mov esi, 2000 ; 2000ms = 2s
push ebp
call delay_ms
pop ebp
ret
;***************************************************************************
; Function
; e3c59x_tx_reset
; Description
; resets and enables transmitter engine
; Parameters:
; ebp - io_addr
; Return value:
; Destroyed registers
; ax, ecx, edx
;
;***************************************************************************
align 4
e3c59x_tx_reset:
; TxReset
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (01011b shl 11)
out dx, ax
; wait for TxReset to complete
mov ecx, 2000
.tx_reset_loop:
in ax, dx
test ah, 10000b ; check CmdInProgress
jz .tx_enable
dec ecx
jns .tx_reset_loop
test byte [e3c59x_full_bus_master], 0xff
jz .tx_enable
; init last_dpd
mov dword [e3c59x_prev_dpd], e3c59x_dpd_buff+(E3C59X_NUM_TX_DESC-1)*E3C59X_DPD_SIZE
mov dword [e3c59x_prev_tx_frame], e3c59x_tx_buff+(E3C59X_NUM_TX_DESC-1)*E3C59X_MAX_ETH_FRAME_SIZE
.tx_enable:
mov ax, (01001b shl 11) ; TxEnable
out dx, ax
ret
;***************************************************************************
; Function
; e3c59x_rx_reset
; Description
; resets and enables receiver engine
; Parameters:
; ebp - io_addr
; Return value:
; Destroyed registers
; eax, ebx, ecx, edx, edi, esi
;
;***************************************************************************
align 4
e3c59x_rx_reset:
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (0101b shl 11) or 0x4 ; RxReset
out dx, ax
; wait for RxReset to complete
mov ecx, 200000
.rx_reset_loop:
in ax, dx
test ah, 10000b ; check CmdInProgress
jz .setup_upd
dec ecx
jns .rx_reset_loop
.setup_upd:
; check if full bus mastering
test byte [e3c59x_full_bus_master], 0xff
jz .rx_enable
; create upd ring
mov eax, e3c59x_upd_buff
zero_to_virt eax
mov [e3c59x_curr_upd], eax
mov esi, eax
virt_to_dma esi
mov edi, e3c59x_rx_buff
zero_to_dma edi
mov ebx, e3c59x_upd_buff+(E3C59X_NUM_RX_DESC-1)*E3C59X_UPD_SIZE
zero_to_virt ebx
mov cl, E3C59X_NUM_RX_DESC-1
.upd_loop:
mov [ebx+E3C59X_UPD_UP_NEXT_PTR], esi
and dword [eax+E3C59X_UPD_PKT_STATUS], 0
mov [eax+E3C59X_UPD_UP_FRAG_ADDR], edi
mov dword [eax+E3C59X_UPD_UP_FRAG_LEN], E3C59X_MAX_ETH_FRAME_SIZE or (1 shl 31)
add edi, E3C59X_MAX_ETH_FRAME_SIZE
add esi, E3C59X_UPD_SIZE
mov ebx, eax
add eax, E3C59X_UPD_SIZE
dec cl
jns .upd_loop
mov eax, e3c59x_upd_buff
zero_to_dma eax
lea edx, [ebp+E3C59X_REG_UP_LIST_PTR]
out dx, eax ; write E3C59X_REG_UP_LIST_PTR
lea edx, [ebp+E3C59X_REG_COMMAND]
.rx_enable:
mov ax, (00100b shl 11) ; RxEnable
out dx, ax
ret
;***************************************************************************
; Function
; e3c59x_write_eeprom
; Description
; reads eeprom
; Note : the caller must switch to the register window 0
; before calling this function
; Parameters:
; ax - register to be read (only the first 63 words can be read)
; cx - value to be read into the register
; Return value:
; ax - word read
; Destroyed registers
; ax, ebx, edx
;
;***************************************************************************
; align 4
;e3c59x_write_eeprom:
; mov edx, [io_addr]
; add edx, E3C59X_REG_EEPROM_COMMAND
; cmp ah, 11b
; ja .finish ; address may have a value of maximal 1023
; shl ax, 2
; shr al, 2
; push eax
;; wait for busy
; mov ebx, 0xffff
;@@:
; in ax, dx
; test ah, 0x80
; jz .write_enable
; dec ebx
; jns @r
;; write enable
;.write_enable:
; xor eax, eax
; mov eax, (11b shl 4)
; out dx, ax
;; wait for busy
; mov ebx, 0xffff
;@@:
; in ax, dx
; test ah, 0x80
; jz .erase_loop
; dec ebx
; jns @r
;.erase_loop:
; pop eax
; push eax
; or ax, (11b shl 6) ; erase register
; out dx, ax
; mov ebx, 0xffff
;@@:
; in ax, dx
; test ah, 0x80
; jz .write_reg
; dec ebx
; jns @r
;.write_reg:
; add edx, E3C59X_REG_EEPROM_DATA-E3C59X_REG_EEPROM_COMMAND
; mov eax, ecx
; out dx, ax
;; write enable
; add edx, E3C59X_REG_EEPROM_COMMAND-E3C59X_REG_EEPROM_DATA
; xor eax, eax
; mov eax, (11b shl 4)
; out dx, ax
; wait for busy
; mov ebx, 0xffff
;@@:
; in ax, dx
; test ah, 0x80
; jz .issue_write_reg
; dec ebx
; jns @r
;.issue_write_reg:
; pop eax
; or ax, 01b shl 6
; out dx, ax
;.finish:
; ret
;***************************************************************************
; Function
; e3c59x_read_eeprom
; Description
; reads eeprom
; Parameters:
; ax - register to be read (only the first 63 words can be read)
; ebp - io_addr
; Return value:
; ax - word read
; Destroyed registers
; ax, ebx, edx, ebp
;
;***************************************************************************
align 4
e3c59x_read_eeprom:
push eax
; switch to register window 0
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+0
out dx, ax
pop eax
and ax, 111111b ; take only the first 6 bits into account
movzx ebx, byte [e3c59x_ver_id]
test word [ebx*4+e3c59x_hw_versions+2], EEPROM_8BIT
jz @f
add ax, 0x230 ; hardware constant
jmp .read
@@:
add ax, E3C59X_EEPROM_CMD_READ
test word [ebx*4+e3c59x_hw_versions+2], EEPROM_OFFSET
jz .read
add ax, 0x30
.read:
lea edx, [ebp+E3C59X_REG_EEPROM_COMMAND]
out dx, ax
mov ebx, 0xffff ; duration of about 162 us ;-)
.wait_for_reading:
in ax, dx
test ah, 0x80 ; check bit eepromBusy
jz .read_data
dec ebx
jns .wait_for_reading
.read_data:
lea edx, [ebp+E3C59X_REG_EEPROM_DATA]
in ax, dx
ret
;***************************************************************************
; Function
; e3c59x_mdio_sync
; Description
; initial synchronization
; Parameters
; ebp - io_addr
; Return value
; Destroyed registers
; ax, edx, cl
;
;***************************************************************************
align 4
e3c59x_mdio_sync:
; switch to register window 4
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+4
out dx, ax
cmp byte [e3c59x_preamble], 0
je .no_preamble
; send 32 logic ones
lea edx, [ebp+E3C59X_REG_PHYSICAL_MGMT]
mov cl, 31
.loop:
mov ax, (1 shl E3C59X_BIT_MGMT_DATA) or (1 shl E3C59X_BIT_MGMT_DIR)
out dx, ax
in ax, dx ; delay
mov ax, (1 shl E3C59X_BIT_MGMT_DATA) \
or (1 shl E3C59X_BIT_MGMT_DIR) \
or (1 shl E3C59X_BIT_MGMT_CLK)
out dx, ax
in ax, dx ; delay
dec cl
jns .loop
.no_preamble:
ret
;***************************************************************************
; Function
; e3c59x_mdio_read
; Description
; read MII register
; see page 16 in D83840A.pdf
; Parameters
; ah - PHY addr
; al - register addr
; ebp - io_addr
; Return value
; ax - register read
; Destroyed registers
; eax, ebx, cx, edx
;
;***************************************************************************
align 4
e3c59x_mdio_read:
push eax
call e3c59x_mdio_sync ; returns with window #4
pop eax
lea edx, [ebp+E3C59X_REG_PHYSICAL_MGMT]
shl al, 3
shr ax, 3
and ax, not E3C59X_MII_CMD_MASK
or ax, E3C59X_MII_CMD_READ
mov ebx, eax
xor ecx, ecx
mov cl, 13
.cmd_loop:
mov ax, (1 shl E3C59X_BIT_MGMT_DIR) ; write mii
bt ebx, ecx
jnc .zero_bit
or al, (1 shl E3C59X_BIT_MGMT_DATA)
.zero_bit:
out dx, ax
push eax
in ax, dx ; delay
pop eax
or al, (1 shl E3C59X_BIT_MGMT_CLK) ; write
out dx, ax
in ax, dx ; delay
dec cl
jns .cmd_loop
; read data (18 bits with the two transition bits)
mov cl, 17
xor ebx, ebx
.read_loop:
shl ebx, 1
xor eax, eax ; read comand
out dx, ax
in ax, dx ; delay
in ax, dx
test al, (1 shl E3C59X_BIT_MGMT_DATA)
jz .dont_set
inc ebx
.dont_set:
mov ax, (1 shl E3C59X_BIT_MGMT_CLK)
out dx, ax
in ax, dx ; delay
dec cl
jns .read_loop
mov eax, ebx
ret
;***************************************************************************
; Function
; e3c59x_mdio_write
; Description
; write MII register
; see page 16 in D83840A.pdf
; Parameters
; ah - PHY addr
; al - register addr
; bx - word to be written
; ebp - io_addr
; Return value
; ax - register read
; Destroyed registers
; eax, ebx, cx, edx
;
;***************************************************************************
align 4
e3c59x_mdio_write:
push eax
call e3c59x_mdio_sync
pop eax
lea edx, [ebp+E3C59X_REG_PHYSICAL_MGMT]
shl al, 3
shr ax, 3
and ax, not E3C59X_MII_CMD_MASK
or ax, E3C59X_MII_CMD_WRITE
shl eax, 2
or eax, 10b ; transition bits
shl eax, 16
mov ax, bx
mov ebx, eax
mov ecx, 31
.cmd_loop:
mov ax, (1 shl E3C59X_BIT_MGMT_DIR) ; write mii
bt ebx, ecx
jnc .zero_bit
or al, (1 shl E3C59X_BIT_MGMT_DATA)
.zero_bit:
out dx, ax
push eax
in ax, dx ; delay
pop eax
or al, (1 shl E3C59X_BIT_MGMT_CLK) ; write
out dx, ax
in ax, dx ; delay
dec ecx
jns .cmd_loop
ret
;***************************************************************************
; Function
; e3c59x_transmit
; Description
; Transmits a packet of data via the ethernet card
; edi - Pointer to 48 bit destination address
; bx - Type of packet
; ecx - size of packet
; esi - pointer to packet data
; ebp - io_addr
; Destroyed registers
; eax, ecx, edx, ebp
;
;***************************************************************************
align 4
e3c59x_transmit:
jmp dword [e3c59x_transmit_function]
;***************************************************************************
; Function
; e3c59x_check_tx_status
; Description
; Checks TxStatus queue.
; Return value
; al - 0 no error was found
; al - 1 error was found TxReset is needed
; Destroyed registers
; eax, ecx, edx, ebp
;
;***************************************************************************
e3c59x_check_tx_status:
movzx ebp, word [io_addr] ; to be implemented in ETHERNET.INC
; clear TxStatus queue
lea edx, [ebp+E3C59X_REG_TX_STATUS]
mov cl, 31 ; max number of queue entries
.tx_status_loop:
in al, dx
test al, al
jz .finish ; no error
test al, 0x3f
jnz .finish ; error
.no_error_found:
; clear current TxStatus entry which advances the next one
xor al, al
out dx, al
dec cl
jns .tx_status_loop
.finish:
ret
;***************************************************************************
; Function
; e3c59x_vortex_transmit
; Description
; Transmits a packet of data via the ethernet card
; edi - Pointer to 48 bit destination address
; bx - Type of packet
; ecx - size of packet
; esi - pointer to packet data
; ebp - io_addr
; Destroyed registers
; eax, edx, ecx, edi, esi, ebp
;
;***************************************************************************
align 4
e3c59x_vortex_transmit:
push ecx
call e3c59x_check_tx_status
pop ecx
test al, al
jz .no_error_found
jmp e3c59x_tx_reset
.no_error_found:
; switch to register window 7
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+7
out dx, ax
; check for master operation in progress
lea edx, [ebp+E3C59X_REG_MASTER_STATUS]
in ax, dx
test ah, 0x80
jnz .finish ; no DMA for sending
; dword boundary correction
cmp ecx, E3C59X_MAX_ETH_FRAME_SIZE
ja .finish ; packet is too long
; write Frame Start Header
mov eax, ecx
; add header length and extend the complete length to dword boundary
add eax, ETH_HLEN+3
and eax, not 3
lea edx, [ebp+E3C59X_REG_TX_DATA]
out dx, eax
; prepare the complete frame
push esi
mov esi, edi
mov edi, e3c59x_tx_buff
zero_to_virt edi
cld
; copy destination address
movsd
movsw
; copy source address
mov esi, node_addr
movsd
movsw
; copy packet type
mov [edi], bx
add edi, 2
; copy packet data
pop esi
push ecx
shr ecx, 2
rep movsd
pop ecx
and ecx, 3
rep movsb
mov ecx, eax
; program frame address to be sent
lea edx, [ebp+E3C59X_REG_MASTER_ADDRESS]
mov eax, e3c59x_tx_buff
zero_to_dma eax
out dx, eax
; program frame length
lea edx, [ebp+E3C59X_REG_MASTER_LEN]
mov eax, ecx
out dx, ax
; start DMA Down
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (10100b shl 11) + 1 ; StartDMADown
out dx, ax
.finish:
ret
;***************************************************************************
; Function
; e3c59x_boomerang_transmit
; Description
; Transmits a packet of data via the ethernet card
; edi - Pointer to 48 bit destination address
; bx - Type of packet
; ecx - size of packet
; esi - pointer to packet data
; ebp - io_addr
; Destroyed registers
; eax, ebx, ecx, edx, esi, edi, ebp
;
;***************************************************************************
align 4
e3c59x_boomerang_transmit:
push ecx
call e3c59x_check_tx_status
pop ecx
test al, al
jz .no_error_found
jmp e3c59x_tx_reset
.no_error_found:
cmp ecx, E3C59X_MAX_ETH_FRAME_SIZE
ja .finish ; packet is too long
; calculate descriptor address
mov eax, [e3c59x_prev_dpd]
cmp eax, e3c59x_dpd_buff+(E3C59X_NUM_TX_DESC-1)*E3C59X_DPD_SIZE
jb @f
; wrap around
mov eax, e3c59x_dpd_buff-E3C59X_DPD_SIZE
@@:
add eax, E3C59X_DPD_SIZE
zero_to_virt eax
push eax
; check DnListPtr
lea edx, [ebp+E3C59X_REG_DN_LIST_PTR]
in eax, dx
; mark if Dn_List_Ptr is cleared
test eax, eax
setz [e3c59x_dn_list_ptr_cleared]
; finish if no more free descriptor is available - FIXME!
cmp eax, [esp]
pop eax
jz .finish
push eax esi
mov esi, edi
; calculate tx_buffer address
mov edi, [e3c59x_prev_tx_frame]
cmp edi, e3c59x_tx_buff+(E3C59X_NUM_TX_DESC-1)*E3C59X_MAX_ETH_FRAME_SIZE
jb @f
; wrap around
mov edi, e3c59x_tx_buff-E3C59X_MAX_ETH_FRAME_SIZE
@@:
add edi, E3C59X_MAX_ETH_FRAME_SIZE
zero_to_virt edi
mov eax, edi
cld
; copy destination address
movsd
movsw
; copy source address
mov esi, node_addr
movsd
movsw
; copy packet type
mov [edi], bx
add edi, 2
; copy packet data
pop esi
push ecx
shr ecx, 2
rep movsd
pop ecx
push ecx
and ecx, 3
rep movsb
; padding, do we really need it?
pop ecx
add ecx, ETH_HLEN
cmp ecx, ETH_ZLEN
jae @f
mov ecx, ETH_ZLEN
@@:
; calculate
mov ebx, ecx
test byte [e3c59x_has_hwcksm], 0xff
jz @f
or ebx, (1 shl 26) ; set AddTcpChecksum
@@:
or ebx, 0x8000 ; transmission complete notification
or ecx, 0x80000000 ; last fragment
; program DPD
mov edi, eax
pop eax
and dword [eax+E3C59X_DPD_DN_NEXT_PTR], 0
mov dword [eax+E3C59X_DPD_FRAME_START_HDR], ebx
virt_to_dma edi
mov dword [eax+E3C59X_DPD_DN_FRAG_ADDR], edi
mov [eax+E3C59X_DPD_DN_FRAG_LEN], ecx
; calculate physical address
virt_to_dma eax
push eax
cmp byte [e3c59x_dn_list_ptr_cleared], 0
jz .add_to_list
; write Dn_List_Ptr
out dx, eax
jmp .finish
.add_to_list:
; DnStall
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, ((110b shl 11)+2)
out dx, ax
; wait for DnStall to complete
mov ecx, 6000
.wait_for_stall:
in ax, dx ; read E3C59X_REG_INT_STATUS
test ah, 10000b
jz .dnstall_ok
dec ecx
jnz .wait_for_stall
.dnstall_ok:
pop eax
push eax
mov ebx, [e3c59x_prev_dpd]
zero_to_virt ebx
mov [ebx], eax
lea edx, [ebp+E3C59X_REG_DN_LIST_PTR]
in eax, dx
test eax, eax
jnz .dnunstall
; if Dn_List_Ptr has been cleared fill it up
pop eax
push eax
out dx, eax
.dnunstall:
; DnUnStall
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, ((110b shl 11)+3)
out dx, ax
.finish:
pop eax
dma_to_zero eax
mov [e3c59x_prev_dpd], eax
dma_to_zero edi
mov [e3c59x_prev_tx_frame], edi
ret
;***************************************************************************
; Function
; e3c59x_poll
; Description
; Polls the ethernet card for a received packet
; Received data, if any, ends up in Ether_buffer
; Destroyed registers
; eax, ebx, edx, ecx, edi, esi, ebp
;
;***************************************************************************
align 4
e3c59x_poll:
jmp dword [e3c59x_receive_function]
;***************************************************************************
; Function
; e3c59x_vortex_poll
; Description
; Polls the ethernet card for a received packet
; Received data, if any, ends up in Ether_buffer
; Parameters
; ebp - io_addr
; Return value
; al - 0 ; no packet received
; al - 1 ; packet received
; Destroyed registers
; eax, ebx, edx, ecx, edi, esi, ebp
;
;***************************************************************************
align 4
e3c59x_vortex_poll:
and word [eth_rx_data_len], 0 ; assume no packet received
movzx ebp, word [io_addr] ; to be implemented in ETHERNET.INC
.rx_status_loop:
; examine RxStatus
lea edx, [ebp+E3C59X_REG_RX_STATUS]
in ax, dx
test ax, ax
jz .finish
test ah, 0x80 ; rxIncomplete
jz .check_error
jmp .finish
.check_error:
test ah, 0x40
jz .check_length
; discard the top frame received advancing the next one
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (01000b shl 11)
out dx, ax
jmp .rx_status_loop
.check_length:
and eax, 0x1fff
cmp eax, E3C59X_MAX_ETH_PKT_SIZE
ja .discard_frame ; frame is too long discard it
.check_dma:
push eax
; switch to register window 7
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, E3C59X_SELECT_REGISTER_WINDOW+7
out dx, ax
; check for master operation in progress
lea edx, [ebp+E3C59X_REG_MASTER_STATUS]
in ax, dx
test ah, 0x80
jz .read_frame ; no DMA for receiving
pop eax
jmp .finish
.read_frame:
; program buffer address to read in
lea edx, [ebp+E3C59X_REG_MASTER_ADDRESS]
if defined E3C59X_LINUX
mov eax, e3c59x_rx_buff
zero_to_dma eax
else
mov eax, Ether_buffer
end if
out dx, eax
; program frame length
lea edx, [ebp+E3C59X_REG_MASTER_LEN]
mov ax, 1560
out dx, ax
; start DMA Up
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (10100b shl 11) ; StartDMAUp
out dx, ax
; check for master operation in progress
.dma_loop:
lea edx, [ebp+E3C59X_REG_MASTER_STATUS]
in ax, dx
test ah, 0x80
jnz .dma_loop
; registrate the received packet length
pop eax
mov word [eth_rx_data_len], ax
; discard the top frame received
.discard_frame:
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, (01000b shl 11)
out dx, ax
.finish:
; set return value
cmp word [eth_rx_data_len], 0
setne al
ret
;***************************************************************************
; Function
; e3c59x_boomerang_poll
; Description
; Polls the ethernet card for a received packet
; Received data, if any, ends up in Ether_buffer
; Parameters
; ebp - io_addr
; Return value
; al - 0 ; no packet received
; al - 1 ; packet received
; Destroyed registers
; eax, edx, ecx, edi, esi, ebp
;
;***************************************************************************
align 4
e3c59x_boomerang_poll:
and word [eth_rx_data_len], 0 ; assume no packet received
movzx ebp, word [io_addr] ; to be implemented in ETHERNET.INC
; check if packet is uploaded
mov eax, [e3c59x_curr_upd]
test byte [eax+E3C59X_UPD_PKT_STATUS+1], 0x80 ; upPktComplete
jnz .check_error
jmp .finish
; packet is uploaded check for any error
.check_error:
test byte [eax+E3C59X_UPD_PKT_STATUS+1], 0x40 ; upError
jz .copy_packet_length
and dword [eax+E3C59X_UPD_PKT_STATUS], 0
jmp .finish
.copy_packet_length:
mov ecx, [eax+E3C59X_UPD_PKT_STATUS]
and ecx, 0x1fff
cmp ecx, E3C59X_MAX_ETH_PKT_SIZE
jbe .copy_packet
and dword [eax+E3C59X_UPD_PKT_STATUS], 0
jmp .finish
.copy_packet:
push ecx
mov word [eth_rx_data_len], cx
mov esi, [eax+E3C59X_UPD_UP_FRAG_ADDR]
dma_to_virt esi
mov edi, Ether_buffer
shr ecx, 2 ; first copy dword-wise
cld
rep movsd ; copy the dwords
pop ecx
and ecx, 3
rep movsb ; copy the rest bytes
mov eax, [e3c59x_curr_upd]
and dword [eax+E3C59X_UPD_PKT_STATUS], 0
virt_to_zero eax
cmp eax, e3c59x_upd_buff+(E3C59X_NUM_RX_DESC-1)*E3C59X_UPD_SIZE
jb .no_wrap
; wrap around
mov eax, e3c59x_upd_buff-E3C59X_UPD_SIZE
.no_wrap:
add eax, E3C59X_UPD_SIZE
zero_to_virt eax
mov [e3c59x_curr_upd], eax
.finish:
; check if the NIC is in the upStall state
lea edx, [ebp+E3C59X_REG_UP_PKT_STATUS]
in eax, dx
test ah, 0x20 ; UpStalled
jz .noUpUnStall
; issue upUnStall command
lea edx, [ebp+E3C59X_REG_COMMAND]
mov ax, ((110b shl 11)+1) ; upUnStall
out dx, ax
.noUpUnStall:
; set return value
cmp word [eth_rx_data_len], 0
setnz al
ret