kolibri-ahci:
- added ahci_read git-svn-id: svn://kolibrios.org@9143 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Rustem Gimadutdinov (rgimad)
parent
b89963de95
commit
7126f01a79
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@ -322,7 +322,7 @@ ahci_callbacks:
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dd 0 ; no close function
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dd 0 ; no closemedia function
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dd ahci_querymedia
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dd 0;ahci_read
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dd ahci_read
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dd 0;ahci_write
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dd 0 ; no flush function
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dd 0 ; use default cache size
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@ -564,7 +564,8 @@ ahci_init:
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cmp [ecx + PORT_DATA.drive_type], AHCI_DEV_SATA
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jne .after_add_disk ; skip adding disk code
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; register disk in system:
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stdcall ahci_read_first_sector, ecx
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;stdcall ahci_read_first_sector, ecx
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push ecx
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mov eax, [hd_counter]
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@ -883,6 +884,212 @@ endp
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tmpstr2 rb 16
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;----------------------------------------------------------
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; Read sectors
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; return value: 0 = success, otherwise = error
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proc ahci_read stdcall pdata: dword, buffer: dword, startsector: qword, numsectors_ptr:dword
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locals
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cmdslot dd ?
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cmdheader dd ?
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cmdtable dd ?
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numsectors dd ?
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buffer_pos dd ?
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buffer_length dd ?
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endl
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pushad
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mov ecx, ahci_mutex
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call mutex_lock
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; xor ecx, ecx
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; mov esi, [buffer]
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; .print_data:
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; cmp ecx, 512
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; jae .end_print_data
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; mov al, byte [esi + ecx]
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; mov byte [tmpstr], al
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; mov byte [tmpstr + 1], 0
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; DEBUGF 1, "0x%x(%s) ", al:2, tmpstr
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; inc ecx
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; jmp .print_data
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; .end_print_data:
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; DEBUGF 1, "\n"
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mov eax, [numsectors_ptr]
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mov eax, [eax]
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mov [numsectors], eax
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DEBUGF 1, " ahci_read: buffer = 0x%x, startsector = 0x%x:%x, numsectors = %u\n", [buffer], [startsector], [startsector + 4], eax
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mov esi, [pdata] ; esi - address of PORT_DATA struct of port
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mov edi, [esi + PORT_DATA.port] ; edi - address of HBA_PORT struct of port
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mov eax, edi
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call ahci_find_cmdslot
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cmp eax, -1
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jne .cmdslot_found
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DEBUGF 1, "No free cmdslot on port %u\n", [esi + PORT_DATA.portno]
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jmp .ret
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.cmdslot_found:
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mov [cmdslot], eax
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DEBUGF 1, "Found free cmdslot %u on port %u\n", [cmdslot], [esi + PORT_DATA.portno]
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shl eax, BSF sizeof.HBA_CMD_HDR
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add eax, [esi + PORT_DATA.clb]
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mov [cmdheader], eax ; address of virtual mapping of command header
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mov eax, [cmdslot]
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mov eax, [esi + eax*4 + PORT_DATA.ctba_arr]
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mov [cmdtable], eax ; address of virtual mapping of command table of command header
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mov eax, [cmdheader]
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and [eax + HBA_CMD_HDR.flags1], not 0x1F ; zero out lower 5 bits, they will be used for cfl
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or [eax + HBA_CMD_HDR.flags1], (sizeof.FIS_REG_H2D / 4) ; set command fis length in dwords
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movzx bx, [eax + HBA_CMD_HDR.flags1]
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btr bx, 6 ; flag W = 0
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mov [eax + HBA_CMD_HDR.flags1], bl
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movzx bx, [eax + HBA_CMD_HDR.flags2]
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btr bx, 2 ; flag C = 0
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mov [eax + HBA_CMD_HDR.flags2], bl
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mov ebx, [numsectors]
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shl ebx, 9 ; *= 512
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mov [buffer_length], ebx
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dec ebx
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shr ebx, 12 ; /= 4096
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inc ebx
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mov [eax + HBA_CMD_HDR.prdtl], bx
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;DEBUGF 1, " prdtl = %u\n", [eax + HBA_CMD_HDR.prdtl]:2
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; zero out the command table with its prdt entries
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dec ebx
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shl ebx, BSF sizeof.HBA_PRDT_ENTRY
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add ebx, sizeof.HBA_CMD_TBL
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stdcall _memset, [cmdtable], 0, ebx
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DEBUGF 1, " prdtl = %u\n", [eax + HBA_CMD_HDR.prdtl]:2
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;jmp .ret
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xor ecx, ecx
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movzx edx, [eax + HBA_CMD_HDR.prdtl]
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dec edx
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mov eax, [buffer]
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mov [buffer_pos], eax
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.prdt_fill:
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cmp ecx, edx
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jae .prdt_fill_end
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mov ebx, [buffer_pos]
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and ebx, 0xFFF
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call get_pg_addr ; eax = phys addr
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add eax, ebx
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DEBUGF 1, " PHYS = 0x%x\n", eax
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mov ebx, ecx
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shl ebx, BSF sizeof.HBA_PRDT_ENTRY
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add ebx, [cmdtable]
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add ebx, HBA_CMD_TBL.prdt_entry ; now ebx - address of ecx'th prdt_entry
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mov [ebx + HBA_PRDT_ENTRY.dba], eax
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mov [ebx + HBA_PRDT_ENTRY.dbau], 0
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and [ebx + HBA_PRDT_ENTRY.flags], not 0x3FFFFF ; zero out lower 22 bits, they used for byte count
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or [ebx + HBA_PRDT_ENTRY.flags], 4096 - 1 ; reason why -1 see in spec on this field
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; or [eax + HBA_CMD_TBL.prdt_entry + HBA_PRDT_ENTRY.flags], 1 shl 31 ; enable interrupt on completion
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add [buffer_pos], 4096
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sub [buffer_length], 4096
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inc ecx
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jmp .prdt_fill
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.prdt_fill_end:
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mov ebx, [buffer_pos]
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and ebx, 0xFFF
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call get_pg_addr ; eax = phys addr
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add eax, ebx
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DEBUGF 1, " PHYS. = 0x%x\n", eax
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DEBUGF 1, " ecx = 0x%x\n", ecx
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mov ebx, ecx
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shl ebx, BSF sizeof.HBA_PRDT_ENTRY
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add ebx, [cmdtable]
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add ebx, HBA_CMD_TBL.prdt_entry ; now ebx - address of ecx'th prdt_entry
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mov [ebx + HBA_PRDT_ENTRY.dba], eax
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mov [ebx + HBA_PRDT_ENTRY.dbau], 0
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and [ebx + HBA_PRDT_ENTRY.flags], not 0x3FFFFF ; zero out lower 22 bits, they used for byte count
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mov eax, [buffer_length]
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dec eax
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DEBUGF 1, " DBC. = %u\n", eax
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or [ebx + HBA_PRDT_ENTRY.flags], eax ; reason why -1 see in spec on this field
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; or [eax + HBA_CMD_TBL.prdt_entry + HBA_PRDT_ENTRY.flags], 1 shl 31 ; enable interrupt on completion
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mov eax, [cmdtable]
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.fis_type], FIS_TYPE_REG_H2D
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movzx ebx, byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.flags]
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bts ebx, bit_AHCI_H2D_FLAG_CMD ; Set Command bit in H2D FIS.
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.flags], bl
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.command], ATA_CMD_READ_DMA_EX
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mov ebx, dword [startsector]
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.lba0], bl
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shr ebx, 8
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.lba1], bl
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shr ebx, 8
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.lba2], bl
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.device], 1 shl 6 ; LBA mode
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shr ebx, 8
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.lba3], bl
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mov ebx, dword [startsector + 4]
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.lba4], bl
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shr ebx, 8
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.lba5], bl
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mov ebx, [numsectors]
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.countl], bl
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shr ebx, 8
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mov byte [eax + HBA_CMD_TBL.cfis + FIS_REG_H2D.counth], bl
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; Wait on previous command to complete, before issuing new command.
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stdcall ahci_port_wait, edi, AHCI_PORT_TIMEOUT
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mov eax, [cmdslot]
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bts [edi + HBA_PORT.command_issue], eax ; Issue the command
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; Wait for command completion
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stdcall ahci_port_cmd_wait, edi, eax;, AHCI_PORT_CMD_TIMEOUT
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DEBUGF 1, "sata_error register = 0x%x\n", [edi + HBA_PORT.sata_error]
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DEBUGF 1, "reading completed\n"
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xor ecx, ecx
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mov esi, [buffer]
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.print_data:
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cmp ecx, 512
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jae .end_print_data
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mov al, byte [esi + ecx]
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mov byte [tmpstr], al
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mov byte [tmpstr + 1], 0
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DEBUGF 1, "0x%x(%s) ", al:2, tmpstr
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inc ecx
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jmp .print_data
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.end_print_data:
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DEBUGF 1, "\n"
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.ret:
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mov ecx, ahci_mutex
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call mutex_unlock
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popad
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xor eax, eax
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ret
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endp
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tmpstr rb 16
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; Start command engine
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; in: eax - address of HBA_PORT structure
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ahci_start_cmd:
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