uart driver
git-svn-id: svn://kolibrios.org@8384 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
bw
parent
9d28bd0e9d
commit
91d4003b6e
@ -5,14 +5,11 @@
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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format MS COFF
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DEBUG equ 1
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include 'proc32.inc'
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include 'imports.inc'
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format PE DLL native 0.05
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entry START
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__DEBUG__ equ 1
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__DEBUG_LEVEL__ equ 1 ; 1 = verbose, 2 = errors only
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API_VERSION equ 0
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UART_VERSION equ API_VERSION
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@ -26,6 +23,15 @@ TASK_COUNT equ (OS_BASE+0x0003004)
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CURRENT_TASK equ (OS_BASE+0x0003000)
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section '.flat' readable writable executable
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include 'proc32.inc'
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include 'struct.inc'
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include 'macros.inc'
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include 'fdo.inc'
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include 'peimport.inc'
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struc APPOBJ ;common object header
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{
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.magic dd ? ;
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@ -33,30 +39,12 @@ struc APPOBJ ;common object header
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.fd dd ? ;next object in list
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.bk dd ? ;prev object in list
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.pid dd ? ;owner id
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};
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}
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virtual at 0
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APPOBJ APPOBJ
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end virtual
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struc IOCTL
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{ .handle dd ?
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.io_code dd ?
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.input dd ?
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.inp_size dd ?
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.output dd ?
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.out_size dd ?
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}
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virtual at 0
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IOCTL IOCTL
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end virtual
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DEBUG equ 1
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DRV_ENTRY equ 1
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DRV_EXIT equ -1
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THR_REG equ 0; x3f8 ;transtitter/reciever
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IER_REG equ 1; x3f9 ;interrupt enable
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IIR_REG equ 2; x3fA ;interrupt info
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@ -106,7 +94,7 @@ MCR_DTR equ 0x01 ;0-> DTR=1, 1-> DTR=0
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MCR_RTS equ 0x02 ;0-> RTS=1, 1-> RTS=0
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MCR_OUT_1 equ 0x04 ;0-> OUT1=1, 1-> OUT1=0
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MCR_OUT_2 equ 0x08 ;0-> OUT2=1, 1-> OUT2=0; enable intr
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MCR_LOOP equ 0x10 ;lopback mode
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MCR_LOOP equ 0x10 ;loopback mode
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MSR_DCTS equ 0x01 ;delta clear to send
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MSR_DDSR equ 0x02 ;delta data set redy
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@ -173,11 +161,12 @@ struc UART
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.xmit_free dd ?
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.xmit_top dd ?
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}
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virtual at 0
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UART UART
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end virtual
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UART_SIZE equ 18*4
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UART_SIZE equ 18*4
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struc CONNECTION
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{
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@ -197,22 +186,31 @@ end virtual
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CONNECTION_SIZE equ 7*4
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public START
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public service_proc
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public version
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section '.flat' code readable align 16
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;proc START c, state:dword
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; cmp [state], 1
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proc START stdcall, state:dword
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align 4
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proc START c, state:dword
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DEBUGF 1, "Loading driver UART (entry at %x)...\n", START
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cmp [state], 1
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push esi ; [bw] ???
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cmp [state], DRV_ENTRY
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jne .stop
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mov eax, UART_SIZE
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call Kmalloc
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mov esi, msg_start
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invoke SysMsgBoardStr
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mov eax, UART_SIZE
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invoke Kmalloc
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; invoke Kmalloc, UART_SIZE (1) -- failure
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; invoke Kmalloc, UART_SIZE (2) -- success
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; DEBUGF 1,"[UART.START] Kmalloc: UART_SIZE=%d eax=%d\n", UART_SIZE, eax
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test eax, eax
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jz .fail
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DEBUGF 1, "Structure %x allocated\n", eax
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mov [com1], eax
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mov edi, eax
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mov ecx, UART_SIZE/4
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@ -223,7 +221,7 @@ proc START stdcall, state:dword
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mov eax, [com1]
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mov [eax+UART.base], COM_1_BASE
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stdcall AllocKernelSpace, 32768
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invoke AllocKernelSpace, 32768
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mov edi, [com1]
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mov edx, eax
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@ -236,7 +234,7 @@ proc START stdcall, state:dword
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add eax, 8192
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mov [edi+UART.xmit_top], eax
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call AllocPage
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invoke AllocPage
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test eax, eax
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jz .fail
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@ -245,7 +243,7 @@ proc START stdcall, state:dword
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mov [page_tabs+edx*4], eax
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mov [page_tabs+edx*4+8], eax
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call AllocPage
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invoke AllocPage
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test eax, eax
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jz .fail
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@ -253,7 +251,7 @@ proc START stdcall, state:dword
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mov [page_tabs+edx*4+4], eax
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mov [page_tabs+edx*4+12], eax
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call AllocPage
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invoke AllocPage
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test eax, eax
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jz .fail
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@ -261,7 +259,7 @@ proc START stdcall, state:dword
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mov [page_tabs+edx*4+16], eax
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mov [page_tabs+edx*4+24], eax
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call AllocPage
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invoke AllocPage
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test eax, eax
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jz .fail
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@ -282,11 +280,22 @@ proc START stdcall, state:dword
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mov eax, edi
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call uart_reset.internal ;eax= uart
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stdcall AttachIntHandler, COM_1_IRQ, com_1_isr, dword 0
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stdcall RegService, sz_uart_srv, service_proc
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invoke AttachIntHandler, COM_1_IRQ, com_1_isr, dword 0
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test eax, eax
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jnz @f
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DEBUGF 2, "Could not attach int handler (%x)\n", COM_1_IRQ
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jmp .fail
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@@:
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DEBUGF 1, "Attached int handler (%x)\n", COM_1_IRQ
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pop esi
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invoke RegService, sz_uart_srv, service_proc
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ret
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.fail:
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.stop:
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DEBUGF 2, "Failed\n"
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pop esi
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xor eax, eax
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ret
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endp
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@ -312,7 +321,6 @@ PORT_WRITE equ 9
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align 4
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proc service_proc stdcall, ioctl:dword
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mov ebx, [ioctl]
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mov eax, [ebx+io_code]
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cmp eax, PORT_WRITE
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@ -349,15 +357,14 @@ proc service_proc stdcall, ioctl:dword
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.fail:
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or eax, -1
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ret
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endp
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restore handle
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restore io_code
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restore input
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restore inp_size
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restore output
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restore out_size
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;restore handle
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;restore io_code
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;restore input
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;restore inp_size
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;restore output
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;restore out_size
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; param
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@ -398,7 +405,8 @@ align 4
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out dx, al ;clear DTR & RTS
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mov eax, esi
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mov ebx, RATE_2400
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; mov ebx, RATE_2400
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mov ebx, RATE_115200
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mov ecx, LCR_8BIT+LCR_STOP_1
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call uart_set_mode.internal
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@ -593,7 +601,7 @@ uart_open:
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cmp eax, COM_MAX
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jae .fail
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mov esi, [com1+eax*4] ;uart
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mov esi, [com1+eax*4] ;uart
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push esi
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.do_wait:
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cmp dword [esi+UART.lock], 0
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@ -613,7 +621,7 @@ uart_open:
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shl ebx, 5
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mov ebx, [CURRENT_TASK+ebx+4]
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mov eax, CONNECTION_SIZE
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call CreateObject
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invoke CreateObject
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pop esi ;uart
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test eax, eax
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jz .fail
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@ -640,15 +648,17 @@ uart_close:
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cmp [eax+APPOBJ.destroy], uart_close.destroy
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jne .fail
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.destroy:
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; DEBUGF 1, "[UART.destroy] eax=%x uart=%x\n", eax, [eax+CONNECTION.uart]
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push [eax+CONNECTION.uart]
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call DestroyObject ;eax= object
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pop eax ;eax= uart
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invoke DestroyObject ;eax= object
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pop eax ;eax= uart
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test eax, eax
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jz .fail
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mov [eax+UART.state], UART_CLOSED
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mov [eax+UART.lock], 0;release port
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mov [eax+UART.lock], 0 ;release port
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xor eax, eax
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ret
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.fail:
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@ -882,9 +892,11 @@ align 4
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com_2_isr:
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mov ebx, [com2]
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jmp com_1_isr.get_info
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align 4
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com_1_isr:
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mov ebx, [com1]
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.get_info:
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mov edx, [ebx+UART.base]
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add edx, IIR_REG
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@ -910,6 +922,7 @@ isr_line:
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align 4
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isr_recieve:
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; DEBUGF 1, "[UART.isr_recieve] ebx=%x\n", ebx
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mov esi, [ebx+UART.base]
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add esi, LSR_REG
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mov edi, [ebx+UART.rcvr_wp]
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@ -967,10 +980,15 @@ isr_action dd isr_modem
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version dd (5 shl 16) or (UART_VERSION and 0xFFFF)
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sz_uart_srv db 'UART',0
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sz_uart_srv db 'UART', 0
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msg_start db 'Loading UART driver...',13,10,0
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include_debug_strings ; All data wich FDO uses will be included here
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align 4
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com1 rd 1
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com2 rd 1
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align 4
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data fixups
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end data
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