Subversion Repositories Kolibri OS

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;;                                                              ;;

;; Copyright (C) KolibriOS team 2004-2020. All rights reserved. ;;

;; Distributed under terms of the GNU General Public License    ;;

;;                                                              ;;

;;  PCMCIA aka cardbus driver for KolibriOS                     ;;

;;  Written by hidnplayr@gmail.com                              ;;

;;                                                              ;;

;;  Many credits go to Paolo Franchetti for his HWTEST program  ;;

;;  (https://sites.google.com/site/pfranz73/) from which large  ;;

;;  parts of code have been borrowed.                           ;;

;;                                                              ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

; This module detects and initialises all Cardbus/pc-card/PCMCIA cards.

; WARNING: Cards must be inserted before the driver starts, and shouldn't be removed.

; This module doesn't handle insertions and removals.

; TODO:

;

; Use GetPCIList instead of reading directly from PCI bus to detect bridge.

; (See #5544 agp.asm for example).

; Export a function in kernel to re-scan PCI device list (fix 'dirty hack').

; Fix bugs (currently not working on all PCMCIA bridges).

format PE DLL native

entry START

        CURRENT_API             = 0x0200

        COMPATIBLE_API          = 0x0100

        API_VERSION             = (COMPATIBLE_API shl 16) + CURRENT_API

        CARDBUS_IO_BASE         = 0x1400

        CARDBUS_IO_SIZE         = 0x100

        CARDBUS_IRQ             = 0x0A

        __DEBUG__               = 1

        __DEBUG_LEVEL__         = 1

section '.flat' readable writable executable

include '../proc32.inc'

include '../struct.inc'

include '../macros.inc'

include '../pci.inc'

include '../fdo.inc'

;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;                        ;;

;; proc START             ;;

;;                        ;;

;; (standard driver proc) ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;

proc START c, reason:dword, cmdline:dword

        cmp     [reason], DRV_ENTRY

        jne     .fail

        DEBUGF  1, "Loading cardbus driver\n"

        invoke  RegService, my_service, service_proc

        call    detect

        ret

  .fail:

        xor     eax, eax

        ret

endp

;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;                        ;;

;; proc SERVICE_PROC      ;;

;;                        ;;

;; (standard driver proc) ;;

;;;;;;;;;;;;;;;;;;;;;;;;;;;;

proc service_proc stdcall, ioctl:dword

        mov     edx, [ioctl]

        mov     eax, [edx + IOCTL.io_code]

;------------------------------------------------------

        cmp     eax, 0 ;SRV_GETVERSION

        jne     .fail

        cmp     [edx + IOCTL.out_size], 4

        jb      .fail

        mov     eax, [edx + IOCTL.output]

        mov     [eax], dword API_VERSION

        xor     eax, eax

        ret

  .fail:

        or      eax, -1

        ret

endp

align 4

proc detect

           locals

             last_bus dd ?

             card_bus dd ?

             bus      dd ?

             devfn    dd ?

           endl

        DEBUGF  1, "Searching for cardbus bridges...\n"

        xor     eax, eax

        mov     [bus], eax

        inc     eax

        invoke  PciApi

        cmp     eax, -1

        je      .err

        mov     [last_bus], eax

        inc     eax

        mov     [card_bus], eax

  .next_bus:

        and     [devfn], 0

  .next_dev:

        invoke  PciRead32, [bus], [devfn], PCI_header.vendor_id

        test    eax, eax

        jz      .next

        cmp     eax, -1

        je      .next

        invoke  PciRead16, [bus], [devfn], PCI_header.subclass  ; class & subclass

        cmp     ax, 0x0607

        je      .found

  .next:

        test    [devfn], 7

        jnz     .next_fn

        invoke  PciRead8, [bus], [devfn], PCI_header.header_type

        test    al, al

        js      .next_fn

        or      [devfn], 7

  .next_fn:

        inc     [devfn]

        cmp     [devfn], 256

        jb      .next_dev

        mov     eax, [bus]

        inc     eax

        mov     [bus], eax

        cmp     eax, [last_bus]

        jna     .next_bus

        DEBUGF  1, "Search complete\n"

        xor     eax, eax

        inc     eax

        ret

  .found:

        DEBUGF  1, "Found cardbus bridge: bus=0x%x, dev=0x%x\n", [bus], [devfn]

        invoke  PciRead8, [bus], [devfn], PCI_header.header_type

        and     al, not 0x80                                            ; Mask the multifunction device bit

        DEBUGF  1, "Header type=0x%x\n", eax:2

        cmp     al, 2

        jne     .next

; Write PCI and cardbus numbers

        invoke  PciRead32, [bus], [devfn], PCI_header02.pci_bus_nr      ; PCcard latency settings + Card bus number, PCI bus number

        and     eax, 0xff000000                                         ; Keep original latency setting, clear the rest

        mov     al, byte[bus]

        mov     ah, byte[card_bus]

        mov     ebx, [card_bus]         ; sub bus nr???

        shl     ebx, 16

        or      eax, ebx

        DEBUGF  1, "Latency, bus,.. 0x%x\n", eax

        invoke  PciWrite32, [bus], [devfn], PCI_header02.pci_bus_nr, eax

; set ExCA legacy mode base

        invoke  PciWrite32, [bus], [devfn], 0x44, 1

; Enable power

        invoke  PciRead8, [bus], [devfn], 0x14                  ; get capabilities offset

        movzx   eax, al                                         ; (A0 for TI bridges)

        DEBUGF  1, "Capabilities offset=0x%x\n", eax:2

        add     al, 4                                           ; Power management control/status

        invoke  PciWrite16, [bus], [devfn], eax, 0x0100         ; Enable PME signaling, power state=D0

; Enable Bus master, io space, memory space

        invoke  PciWrite16, [bus], [devfn], PCI_header02.command, 0x0007

; Write CardBus Socket/ExCA base address

        mov     eax, 0x7f000000

        push    eax

        invoke  PciWrite32, [bus], [devfn], PCI_header02.base_addr, eax ; base is 4 Kbyte aligned

        pop     ebx

        invoke  MapIoMem, ebx, 4096, PG_SW+PG_NOCACHE

        mov     ecx, eax

; Check if a card is present in the socket

        mov     eax, [ecx + 8]                                  ; Socket present state register

        DEBUGF  1, "Socket present state reg: 0x%x\n", eax

        and     al, 10110110b                                   ; NotACard | CBCard | 16bitCard | CDetect1 | CDetect2

        cmp     al, 00100000b                                   ; Check for inserted cardbus card

        je      .CardbusInserted

; No card found... set PCI command back to 0

        invoke  PciWrite16, [bus], [devfn], PCI_header02.command, 0  ; To avoid conflicts with other sockets

        DEBUGF  1, "Cardbus KO\n"

        jmp     .next

  .CardbusInserted:

        DEBUGF  1, "Card inserted\n"

        ;mov     word[ecx + 0x802], 0x00F9       ; Assert reset, output enable, vcc=vpp=3.3V

        mov     dword[ecx + 0x10], 0x33         ; Request 3.3V for Vcc and Vpp (Control register)

        ;push    ecx

        ;mov     esi, 1

        ;invoke  Sleep

        ;pop     ecx

        ;mov     byte[ecx + 0x803], 0x40         ; stop reset

        mov     dword[ecx + 0xC], 0x4000        ; force Card CV test (Force register)   ;;; WHY???

        DEBUGF  1, "Resetting card\n"

; Next power up test can be deferred until before writing to Bridge control PCI reg 0x3E

  .waitpower:                                   ; For TI, you can check that bits 8-11 in PCI reg 80h are all 0

        test    dword[ecx + 8], 1 shl 3         ; Test PWRCYCLE bit

        jz      .waitpower                      ; Wait for power to go up

        DEBUGF  1, "Interface is powered up\n"

; Write MemBase-Limit 0 and 1, then IOBase-Limit 0 and 1

; mem0 space limit = base => size is 4 kilobytes

; set to 0 the second interval (mem1 and IO1)

; IO0: size is 256 bytes

        invoke  PciWrite32, [bus], [devfn], PCI_header02.mbar_0, 0x7EFFF000

        invoke  PciWrite32, [bus], [devfn], PCI_header02.mlimit_0, 0x7EFFF000

        invoke  PciWrite32, [bus], [devfn], PCI_header02.mbar_1, 0

        invoke  PciWrite32, [bus], [devfn], PCI_header02.mlimit_1, 0

        invoke  PciWrite32, [bus], [devfn], PCI_header02.iobar_0, CARDBUS_IO

        invoke  PciWrite32, [bus], [devfn], PCI_header02.iolimit_0, CARDBUS_IO + 0xFC

        invoke  PciWrite32, [bus], [devfn], PCI_header02.iobar_1, 0

        invoke  PciWrite32, [bus], [devfn], PCI_header02.iolimit_1, 0

        invoke  PciWrite8, [bus], [devfn], PCI_header02.interrupt_line, CARDBUS_IRQ     ; IRQ line

        invoke  PciRead16, [bus], [devfn], PCI_header02.bridge_ctrl                     ; Bridge control

        or      ax, 0x0700                                      ; Enable write posting, both memory windows prefetchable

        invoke  PciWrite16, [bus], [devfn], PCI_header02.bridge_ctrl, eax

        DEBUGF  1, "Write posting enabled\n"

        DEBUGF  1, "Bridge PCI registers:\n"

rept    17 reg

{

        invoke  PciRead32, [bus], [devfn], 4*(reg-1)

        DEBUGF  1, "0x%x\n", eax

}

        inc     byte[0x80009021]                                ; LAST PCI bus count in kernel (dirty HACK!)

        mov     ecx, 100

  .waitactive:

        push    ecx

        invoke  PciRead32, [card_bus], 0, PCI_header.vendor_id         ; Check if the card is awake yet

        inc     eax

        jnz     .got_it

        mov     esi, 2

        invoke  Sleep

        pop     ecx

        dec     ecx

        jnz     .waitactive

        DEBUGF  1, "Timeout!\n"

        ; TODO: disable card/bridge again ?

        jmp     .next

  .got_it:

        pop     eax

        DEBUGF  1, "Card is enabled!\n"

        invoke  PciWrite32, [card_bus], 0, PCI_header02.base_addr, CARDBUS_IO       ; Supposing it's IO space that is needed

        invoke  PciWrite8, [card_bus], 0, PCI_header02.interrupt_line, 0xC                      ; FIXME

        invoke  PciWrite16, [card_bus], 0, PCI_header02.command, PCI_CMD_PIO or PCI_CMD_MMIO

        DEBUGF  1, "done\n"

        jmp     .next

  .err:

        DEBUGF  1, "Error\n"

        xor     eax, eax

        ret

endp

; End of code

data fixups

end data

include '../peimport.inc'

my_service      db 'CARDBUS',0                  ; max 16 chars include zero

include_debug_strings                           ; All data wich FDO uses will be included here