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uart driver

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git-svn-id: svn://kolibrios.org@8384 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
bw 2020-12-13 02:57:39 +00:00
parent 9d28bd0e9d
commit 91d4003b6e
1 changed files with 77 additions and 59 deletions
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128
drivers/old/uart.asm
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@ -5,14 +5,11 @@
;; ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
format MS COFF
DEBUG equ 1
include 'proc32.inc'
include 'imports.inc'
format PE DLL native 0.05
entry START
__DEBUG__ equ 1
__DEBUG_LEVEL__ equ 1 ; 1 = verbose, 2 = errors only
API_VERSION equ 0
UART_VERSION equ API_VERSION
@ -26,6 +23,15 @@ TASK_COUNT equ (OS_BASE+0x0003004)
CURRENT_TASK equ (OS_BASE+0x0003000)
section '.flat' readable writable executable
include 'proc32.inc'
include 'struct.inc'
include 'macros.inc'
include 'fdo.inc'
include 'peimport.inc'
struc APPOBJ ;common object header
{
.magic dd ? ;
@ -33,30 +39,12 @@ struc APPOBJ ;common object header
.fd dd ? ;next object in list
.bk dd ? ;prev object in list
.pid dd ? ;owner id
};
}
virtual at 0
APPOBJ APPOBJ
end virtual
struc IOCTL
{ .handle dd ?
.io_code dd ?
.input dd ?
.inp_size dd ?
.output dd ?
.out_size dd ?
}
virtual at 0
IOCTL IOCTL
end virtual
DEBUG equ 1
DRV_ENTRY equ 1
DRV_EXIT equ -1
THR_REG equ 0; x3f8 ;transtitter/reciever
IER_REG equ 1; x3f9 ;interrupt enable
IIR_REG equ 2; x3fA ;interrupt info
@ -106,7 +94,7 @@ MCR_DTR equ 0x01 ;0-> DTR=1, 1-> DTR=0
MCR_RTS equ 0x02 ;0-> RTS=1, 1-> RTS=0
MCR_OUT_1 equ 0x04 ;0-> OUT1=1, 1-> OUT1=0
MCR_OUT_2 equ 0x08 ;0-> OUT2=1, 1-> OUT2=0; enable intr
MCR_LOOP equ 0x10 ;lopback mode
MCR_LOOP equ 0x10 ;loopback mode
MSR_DCTS equ 0x01 ;delta clear to send
MSR_DDSR equ 0x02 ;delta data set redy
@ -173,6 +161,7 @@ struc UART
.xmit_free dd ?
.xmit_top dd ?
}
virtual at 0
UART UART
end virtual
@ -197,22 +186,31 @@ end virtual
CONNECTION_SIZE equ 7*4
public START
public service_proc
public version
section '.flat' code readable align 16
;proc START c, state:dword
; cmp [state], 1
proc START stdcall, state:dword
align 4
proc START c, state:dword
DEBUGF 1, "Loading driver UART (entry at %x)...\n", START
cmp [state], 1
push esi ; [bw] ???
cmp [state], DRV_ENTRY
jne .stop
mov esi, msg_start
invoke SysMsgBoardStr
mov eax, UART_SIZE
call Kmalloc
invoke Kmalloc
; invoke Kmalloc, UART_SIZE (1) -- failure
; invoke Kmalloc, UART_SIZE (2) -- success
; DEBUGF 1,"[UART.START] Kmalloc: UART_SIZE=%d eax=%d\n", UART_SIZE, eax
test eax, eax
jz .fail
DEBUGF 1, "Structure %x allocated\n", eax
mov [com1], eax
mov edi, eax
mov ecx, UART_SIZE/4
@ -223,7 +221,7 @@ proc START stdcall, state:dword
mov eax, [com1]
mov [eax+UART.base], COM_1_BASE
stdcall AllocKernelSpace, 32768
invoke AllocKernelSpace, 32768
mov edi, [com1]
mov edx, eax
@ -236,7 +234,7 @@ proc START stdcall, state:dword
add eax, 8192
mov [edi+UART.xmit_top], eax
call AllocPage
invoke AllocPage
test eax, eax
jz .fail
@ -245,7 +243,7 @@ proc START stdcall, state:dword
mov [page_tabs+edx*4], eax
mov [page_tabs+edx*4+8], eax
call AllocPage
invoke AllocPage
test eax, eax
jz .fail
@ -253,7 +251,7 @@ proc START stdcall, state:dword
mov [page_tabs+edx*4+4], eax
mov [page_tabs+edx*4+12], eax
call AllocPage
invoke AllocPage
test eax, eax
jz .fail
@ -261,7 +259,7 @@ proc START stdcall, state:dword
mov [page_tabs+edx*4+16], eax
mov [page_tabs+edx*4+24], eax
call AllocPage
invoke AllocPage
test eax, eax
jz .fail
@ -282,11 +280,22 @@ proc START stdcall, state:dword
mov eax, edi
call uart_reset.internal ;eax= uart
stdcall AttachIntHandler, COM_1_IRQ, com_1_isr, dword 0
stdcall RegService, sz_uart_srv, service_proc
invoke AttachIntHandler, COM_1_IRQ, com_1_isr, dword 0
test eax, eax
jnz @f
DEBUGF 2, "Could not attach int handler (%x)\n", COM_1_IRQ
jmp .fail
@@:
DEBUGF 1, "Attached int handler (%x)\n", COM_1_IRQ
pop esi
invoke RegService, sz_uart_srv, service_proc
ret
.fail:
.stop:
DEBUGF 2, "Failed\n"
pop esi
xor eax, eax
ret
endp
@ -312,7 +321,6 @@ PORT_WRITE equ 9
align 4
proc service_proc stdcall, ioctl:dword
mov ebx, [ioctl]
mov eax, [ebx+io_code]
cmp eax, PORT_WRITE
@ -349,15 +357,14 @@ proc service_proc stdcall, ioctl:dword
.fail:
or eax, -1
ret
endp
restore handle
restore io_code
restore input
restore inp_size
restore output
restore out_size
;restore handle
;restore io_code
;restore input
;restore inp_size
;restore output
;restore out_size
; param
@ -398,7 +405,8 @@ align 4
out dx, al ;clear DTR & RTS
mov eax, esi
mov ebx, RATE_2400
; mov ebx, RATE_2400
mov ebx, RATE_115200
mov ecx, LCR_8BIT+LCR_STOP_1
call uart_set_mode.internal
@ -613,7 +621,7 @@ uart_open:
shl ebx, 5
mov ebx, [CURRENT_TASK+ebx+4]
mov eax, CONNECTION_SIZE
call CreateObject
invoke CreateObject
pop esi ;uart
test eax, eax
jz .fail
@ -640,15 +648,17 @@ uart_close:
cmp [eax+APPOBJ.destroy], uart_close.destroy
jne .fail
.destroy:
; DEBUGF 1, "[UART.destroy] eax=%x uart=%x\n", eax, [eax+CONNECTION.uart]
push [eax+CONNECTION.uart]
call DestroyObject ;eax= object
invoke DestroyObject ;eax= object
pop eax ;eax= uart
test eax, eax
jz .fail
mov [eax+UART.state], UART_CLOSED
mov [eax+UART.lock], 0;release port
mov [eax+UART.lock], 0 ;release port
xor eax, eax
ret
.fail:
@ -882,9 +892,11 @@ align 4
com_2_isr:
mov ebx, [com2]
jmp com_1_isr.get_info
align 4
com_1_isr:
mov ebx, [com1]
.get_info:
mov edx, [ebx+UART.base]
add edx, IIR_REG
@ -910,6 +922,7 @@ isr_line:
align 4
isr_recieve:
; DEBUGF 1, "[UART.isr_recieve] ebx=%x\n", ebx
mov esi, [ebx+UART.base]
add esi, LSR_REG
mov edi, [ebx+UART.rcvr_wp]
@ -967,10 +980,15 @@ isr_action dd isr_modem
version dd (5 shl 16) or (UART_VERSION and 0xFFFF)
sz_uart_srv db 'UART',0
sz_uart_srv db 'UART', 0
msg_start db 'Loading UART driver...',13,10,0
include_debug_strings ; All data wich FDO uses will be included here
align 4
com1 rd 1
com2 rd 1
align 4
data fixups
end data