KolibriOS/kolibrios
13
4
Fork 12
Code Issues 78 Pull Requests 5 Projects Releases Activity

rtl8169: Improved interrupt handling.

Browse Source 
git-svn-id: svn://kolibrios.org@9148 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr 2021-08-22 20:57:59 +00:00
parent b13c4c9c6d
commit 55487f48ed
1 changed files with 24 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
drivers/ethernet/RTL8169.asm
View File

@ -1027,15 +1027,14 @@ write_mac:
; Description
; Transmits a packet of data via the ethernet card
;
; Destroyed registers
; eax, edx, esi, edi
; In: pointer to device structure in ebx
; Out: eax = 0 on success
;
;***************************************************************************
align 16
proc transmit stdcall bufferptr
pushf
cli
spin_lock_irqsave
mov esi, [bufferptr]
DEBUGF 1,"Transmitting packet, buffer:%x, size:%u\n", [bufferptr], [esi + NET_BUFF.length]
@ -1107,7 +1106,7 @@ proc transmit stdcall bufferptr
add dword [ebx + device.bytes_tx], ecx
adc dword [ebx + device.bytes_tx + 4], 0
popf
spin_unlock_irqrestore
xor eax, eax
ret
@ -1116,7 +1115,7 @@ proc transmit stdcall bufferptr
inc [ebx + device.packets_tx_err]
invoke NetFree, [bufferptr]
popf
spin_unlock_irqrestore
or eax, -1
ret
@ -1125,7 +1124,7 @@ proc transmit stdcall bufferptr
inc [ebx + device.packets_tx_ovr]
invoke NetFree, [bufferptr]
popf
spin_unlock_irqrestore
or eax, -1
ret
@ -1138,43 +1137,28 @@ endp
;; Interrupt handler ;;
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;
align 4
align 16
int_handler:
push ebx esi edi
DEBUGF 1,"INT\n"
mov ebx, [esp+4*4]
DEBUGF 1,"INT for 0x%x\n", ebx
; find pointer of device wich made IRQ occur
mov ecx, [devices]
test ecx, ecx
jz .nothing
mov esi, device_list
.nextdevice:
mov ebx, [esi]
; TODO? if we are paranoid, we can check that the value from ebx is present in the current device_list
set_io [ebx + device.io_addr], 0
set_io [ebx + device.io_addr], REG_IntrStatus
in ax, dx
out dx, ax ; ACK all interrupts
cmp ax, 0xffff ; if so, hardware is no longer present
je .nothing
test ax, ax
jnz .got_it
.continue:
add esi, 4
dec ecx
jnz .nextdevice
.nothing:
pop edi esi ebx
xor eax, eax
jz .nothing
cmp ax, 0xffff ; if so, hardware is no longer present
je .nothing ;
test ax, ax
jz .nothing
out dx, ax ; ACK all interrupts
ret ; If no device was found, abort (The irq was probably for a device, not registered to this driver)
.got_it:
DEBUGF 1,"Device: %x Status: %x\n", ebx, ax
DEBUGF 1,"Status: %x\n", ax
;--------
; Receive
@ -1326,6 +1310,12 @@ int_handler:
ret
.nothing:
pop edi esi ebx
xor eax, eax
ret
align 4