From 2a81124ad80cd50febda36ea36e1fcb35e2d69be Mon Sep 17 00:00:00 2001 From: "Sergey Semyonov (Serge)" Date: Mon, 12 Mar 2007 14:14:24 +0000 Subject: [PATCH] com driver git-svn-id: svn://kolibrios.org@414 a494cfbc-eb01-0410-851d-a64ba20cac60 --- .../branches/flat_kernel/drivers/comport.asm | 305 ++++++++++++++---- 1 file changed, 235 insertions(+), 70 deletions(-) diff --git a/kernel/branches/flat_kernel/drivers/comport.asm b/kernel/branches/flat_kernel/drivers/comport.asm index 3d42841cec..b7852e0a6d 100644 --- a/kernel/branches/flat_kernel/drivers/comport.asm +++ b/kernel/branches/flat_kernel/drivers/comport.asm @@ -70,7 +70,7 @@ IER_MSI equ 0x08 ;modem status interrupt 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_OUT_2 equ 0x08 ;0-> OUT2=1, 1-> OUT2=0; enable intr MCR_LOOP equ 0x10 ;lopback mode MSR_DCTS equ 0x01 ;delta clear to send @@ -113,10 +113,10 @@ COM_2_IRQ equ 3 UART_CLOSED equ 0 UART_TRANSMIT equ 1 +UART_STOP equ 2 struc UART { - ; .owner dd ? unused .lock dd ? .base dd ? .lcr_reg dd ? @@ -127,21 +127,20 @@ struc UART .rcvr_rp dd ? .rcvr_wp dd ? - .rcvr_free dd ? + .rcvr_cnt dd ? + .xmit_buff dd ? .xmit_rp dd ? .xmit_wp dd ? + .xmit_count dd ? .xmit_free dd ? - .rcvr_buffer rb 128 - .xmit_buffer rb 128 + .xmit_top dd ? } virtual at 0 UART UART end virtual -RCVR_OFFSET equ 14*4 -XMIT_OFFSET equ (13*4*128) -UART_SIZE equ (256+13*4) +UART_SIZE equ 16*4 struc CONNECTION { @@ -179,7 +178,39 @@ init_uart_service: mov eax, [com1] mov [eax+UART.base], COM_1_BASE - call uart_reset ;eax= uart + stdcall alloc_kernel_space, 16384 + + mov edi, [com1] + mov edx, eax + mov [edi+UART.xmit_buff], eax + add eax, 8192 + mov [edi+UART.xmit_top], eax + + call alloc_page + test eax, eax + jz .fail + + shr edx, 12 + or eax, PG_SW + mov [page_tabs+edx*4], eax + mov [page_tabs+edx*4+8], eax + + call alloc_page + test eax, eax + jz .fail + + or eax, PG_SW + mov [page_tabs+edx*4+4], eax + mov [page_tabs+edx*4+12], eax + + mov eax, [edi+UART.xmit_buff] + invlpg [eax] + invlpg [eax+0x1000] + invlpg [eax+0x2000] + invlpg [eax+0x3000] + + mov eax, edi + call uart_reset.internal ;eax= uart stdcall attach_int_handler, COM_1_IRQ, com_1_isr stdcall reg_service, sz_uart_srv, uart_proc @@ -234,6 +265,7 @@ proc uart_proc stdcall, ioctl:dword ret @@: mov esi, [ebx+input] ;input buffer + mov edi, [ebx+output] call [uart_func+eax*4] ret .fail: @@ -250,6 +282,26 @@ restore output restore out_size +; param +; esi= input buffer +; +0 connection +; +; retval +; eax= error code + +align 4 +uart_reset: + mov eax, [esi] + cmp [eax+APPOBJ.magic], 'CNCT' + jne .fail + + cmp [eax+APPOBJ.destroy], uart_close.destroy + jne .fail + + mov eax, [eax+CONNECTION.uart] + test eax, eax + jz .fail + ; set mode 2400 bod 8-bit ; disable DTR & RTS ; clear FIFO @@ -259,7 +311,7 @@ restore out_size ; eax= uart align 4 -uart_reset: +.internal: mov esi, eax mov [eax+UART.state], UART_CLOSED mov edx, [eax+UART.base] @@ -322,22 +374,28 @@ uart_reset: in al, dx jmp .clear_IIR .done: - lea edi, [esi+UART.rcvr_buffer] - mov ecx, 256/4 + mov edi, [esi+UART.xmit_buff] + mov ecx, 8192/4 xor eax, eax - mov [esi+UART.rcvr_rp], eax - mov [esi+UART.rcvr_wp], eax - mov [esi+UART.rcvr_free], 128 - mov [esi+UART.xmit_rp], eax - mov [esi+UART.xmit_wp], eax - mov [esi+UART.xmit_free], 128 + mov [esi+UART.xmit_rp], edi + mov [esi+UART.xmit_wp], edi + mov [esi+UART.xmit_count], eax + mov [esi+UART.xmit_free], 8192 cld rep stosd - ret +; mov [esi+UART.rcvr_rp], eax +; mov [esi+UART.rcvr_wp], eax +; mov [esi+UART.rcvr_cnt], eax + + ret +.fail: + or eax, -1 + ret + ; param ; esi= input buffer ; +0 connection @@ -406,15 +464,39 @@ align 4 or eax, -1 ret +; param +; esi= input buffer +; +0 connection +; +4 modem control reg valie +; +; retval +; eax= error code align 4 -uart_set_modem: +uart_set_mcr: + + mov eax, [esi] + cmp [eax+APPOBJ.magic], 'CNCT' + jne .fail + + cmp [eax+APPOBJ.destroy], uart_close.destroy + jne .fail + + mov eax, [eax+CONNECTION.uart] + test eax, eax + jz .fail + + mov ebx, [esi+4] mov [eax+UART.mcr_reg], ebx mov edx, [eax+UART.base] add edx, MCR_REG mov al, bl out dx, al + xor eax, eax + ret +.fail: + or eax, -1 ret ; param @@ -444,7 +526,7 @@ uart_open: jnz .do_wait mov eax, esi ;uart - call uart_reset + call uart_reset.internal mov ebx, [CURRENT_TASK] shl ebx, 5 @@ -534,56 +616,145 @@ align 4 transmit: push esi push edi - push ebp mov edx, [ebx+UART.base] pushfd cli - mov ebp, 16 mov esi, [ebx+UART.xmit_rp] - lea edi, [ebx+UART.xmit_buffer] - mov ecx, [ebx+UART.xmit_free] + mov ecx, [ebx+UART.xmit_count] + test ecx, ecx + je .stop - cmp ecx, 128 - je .exit + cmp ecx, 16 + jbe @F + mov ecx, 16 @@: - and esi, 127 - mov al, [esi+edi] - inc esi - + sub [ebx+UART.xmit_count], ecx + add [ebx+UART.xmit_free], ecx + cld +@@: + lodsb out dx, al - inc ecx - dec ebp - jz .done + dec ecx + jnz @B - cmp ecx, 128 - jne @B -.done: + cmp esi,[ebx+UART.xmit_top] + jb @F + sub esi, 8192 +@@: mov [ebx+UART.xmit_rp], esi - mov [ebx+UART.xmit_free], ecx + + cmp [ebx+UART.xmit_count], 0 + je .stop + mov [ebx+UART.state], UART_TRANSMIT -.exit: + jmp @F +.stop: + mov [ebx+UART.state], UART_STOP +@@: popfd - pop ebp pop edi pop esi ret + +; param +; esi= input buffer +; +0 connection +; +4 dst buffer +; +8 dst size +; edi= output buffer +; +0 bytes read + +; retval +; eax= error code + +align 4 +uart_read: + mov eax, [esi] + cmp [eax+APPOBJ.magic], 'CNCT' + jne .fail + + cmp [eax+APPOBJ.destroy], uart_close.destroy + jne .fail + + mov eax, [eax+CONNECTION.uart] + test eax, eax + jz .fail + + mov ebx, [esi+8] ;dst size + mov ecx, [eax+UART.rcvr_cnt] + cmp ecx, ebx + jbe @F + mov ecx, ebx +@@: + mov [edi], ecx ;bytes read + test ecx, ecx + jz .done + + sub [eax+UART.rcvr_cnt], ecx + + push eax + mov edi, [esi+4] ;dst + ; lea esi, [eax+RCVR_OFFSET] + mov ebx, [eax+UART.rcvr_rp] + cld +@@: + and ebx, 127 + mov al, [esi+ebx] + stosb + inc ebx + dec ecx + jnz @B + + pop eax + mov [eax+UART.rcvr_rp], ebx +.done: + xor eax, eax + rep +.fail: + or eax, -1 + ret + +; param +; esi= input buffer +; +0 connection +; +4 src buffer +; +8 src size +; +; retval +; eax= error code + +align 4 +uart_write: + mov eax, [esi] + cmp [eax+APPOBJ.magic], 'CNCT' + jne .fail + + cmp [eax+APPOBJ.destroy], uart_close.destroy + jne .fail + + mov eax, [eax+CONNECTION.uart] + test eax, eax + jz .fail + + mov ebx, [esi+4] + mov edx, [esi+8] + ; param ; eax= uart ; ebx= src ; edx= count align 4 -uart_write: +.internal: mov esi, ebx mov edi, [eax+UART.xmit_wp] - lea ebx, [eax+UART.xmit_buffer] .write: test edx, edx - jz .done + jz .fail .wait: cmp [eax+UART.xmit_free], 0 jne .fill @@ -596,40 +767,38 @@ uart_write: call transmit pop edx mov eax, ebx - lea ebx, [ebx+UART.xmit_buffer] jmp .write .fill: - mov ecx, 128 - sub ecx, edi - jz .clip - cmp ecx, [eax+UART.xmit_free] - jbe @F - mov ecx, [eax+UART.xmit_free] -@@: cmp ecx, edx jbe @F mov ecx, edx @@: - sub [eax+UART.xmit_free], ecx - sub edx, ecx - - add edi, ebx + push ecx cld rep movsb - - sub edi, ebx -.clip: - and edi, 127 - jmp .write + pop ecx + sub [eax+UART.xmit_free], ecx + add [eax+UART.xmit_count], ecx + sub edx, ecx + jnz .wait .done: + cmp edi, [eax+UART.xmit_top] + jb @F + sub edi, 8192 +@@: mov [eax+UART.xmit_wp], edi cmp [eax+UART.state], UART_TRANSMIT je @F mov ebx, eax call transmit @@: + xor eax, eax ret +.fail: + or eax, -1 + ret + align 4 com_2_isr: @@ -638,7 +807,6 @@ com_2_isr: align 4 com_1_isr: mov ebx, [com1] - .get_info: mov edx, [ebx+UART.base] add edx, IIR_REG @@ -684,16 +852,13 @@ align 4 uart_func dd 0 ;SRV_GETVERSION dd 0 ;PORT_OPEN dd uart_close ;PORT_CLOSE - dd 0 ;PORT_RESET + dd uart_reset ;PORT_RESET dd uart_set_mode ;PORT_SETMODE -; dd uart.get_mode ;PORT_GETMODE -; dd uart.set_mcr ;PORT_SETMCR -;PORT_GETMCR equ 7 -;PORT_READ equ 8 -;PORT_WRITE equ 9 - - - + dd 0 ;PORT_GETMODE + dd uart_set_mcr ;PORT_SETMODEM + dd 0 ;PORT_GETMODEM + dd uart_read ;PORT_READ + dd uart_write ;PORT_WRITE isr_action dd isr_modem dd transmit