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i8255x: Link detection.

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git-svn-id: svn://kolibrios.org@9243 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr 2021-11-03 21:45:38 +00:00
parent 9ca128acbd
commit 78c7f262bf
1 changed files with 100 additions and 3 deletions
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103
drivers/ethernet/i8255x.asm
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@ -228,6 +228,7 @@ struct device ETH_DEVICE
rx_desc dd ?
cur_tx dd ?
last_tx dd ?
link_timer dd ?
ee_bus_width db ?
irq_line db ?
@ -412,6 +413,12 @@ endp
unload:
cmp [ebx + device.link_timer], 0
je @f
invoke CancelTimerHS, [ebx + device.link_timer]
@@:
; TODO: (in this particular order)
;
; - Stop the device
@ -475,6 +482,13 @@ probe:
align 4
reset:
; Stop link check timer if it was already running
cmp [ebx + device.link_timer], 0
je @f
invoke CancelTimerHS, [ebx + device.link_timer]
@@:
; attach int handler
movzx eax, [ebx + device.irq_line]
DEBUGF 1,"Attaching int handler to irq %x\n", eax:1
invoke AttachIntHandler, eax, int_handler, ebx
@ -639,11 +653,14 @@ reset:
out dx, ax
call cmd_wait
DEBUGF 1,"Reset complete\n"
; Start media check timer
mov [ebx + device.state], ETH_LINK_DOWN
invoke TimerHS, 0, 50, check_media_mii, ebx
mov [ebx + device.link_timer], eax
mov [ebx + device.mtu], 1514
; Set link state to unknown
mov [ebx + device.state], ETH_LINK_UNKNOWN
DEBUGF 1,"Reset complete\n"
xor eax, eax ; indicate that we have successfully reset the card
ret
@ -982,6 +999,86 @@ int_handler:
ret
align 16
proc check_media_mii stdcall dev:dword
spin_lock_irqsave
mov ebx, [dev]
mov ecx, 1 ;;;
mov edx, MII_BMSR
call mdio_read
mov ecx, 1 ;;;
mov edx, MII_BMSR
call mdio_read
mov ecx, eax
and eax, BMSR_LSTATUS
shr eax, 2
cmp eax, [ebx + device.state]
jne .changed
spin_unlock_irqrestore
ret
.changed:
test eax, eax
jz .update
test ecx, BMSR_ANEGCOMPLETE
jz .update
mov ecx, 1 ;;;
mov edx, MII_ADVERTISE
call mdio_read
mov esi, eax
mov ecx, 1 ;;;
mov edx, MII_LPA
call mdio_read
and eax, esi
test eax, LPA_100FULL
jz @f
mov eax, ETH_LINK_SPEED_100M or ETH_LINK_FULL_DUPLEX
jmp .update
@@:
test eax, LPA_100HALF
jz @f
mov eax, ETH_LINK_SPEED_100M
jmp .update
@@:
test eax, LPA_10FULL
jz @f
mov eax, ETH_LINK_SPEED_10M or ETH_LINK_FULL_DUPLEX
jmp .update
@@:
test eax, LPA_10HALF
jz @f
mov eax, ETH_LINK_SPEED_10M
jmp .update
@@:
mov eax, ETH_LINK_UNKNOWN
.update:
mov [ebx + device.state], eax
invoke NetLinkChanged
spin_unlock_irqrestore
ret
endp
align 4
cmd_wait: