WebSVN – Kolibri OS – Diff – /kernel/trunk/bus/pci/pci32.inc



;;                                                              ;;
;;  See file COPYING for details                                ;;
;;                                                              ;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

 

$Revision: 1354 $
 
;***************************************************************************
;   Function

	cmp al,9
	jz pci_write_reg  ;word
	cmp al,10
	jz pci_write_reg  ;dword

 
if defined mmio_pci_addr
	cmp al,11	    ; <<< user-level MMIO functions <<< NEW!
	jz pci_mmio_init
	cmp al,12
	jz pci_mmio_map
	cmp al,13
	jz pci_mmio_unmap

end if

 

pci_write_reg_err:
	xor	eax,eax
	dec	eax
	ret

 
if defined mmio_pci_addr
;***************************************************************************
;   Function
;      pci_mmio_init ; NEW!
;

;   Error codes
;       eax = -1 : PCI user access blocked,
;       eax = -2 : device not registered for uMMIO service
;       eax = -3 : user heap initialization failure
;***************************************************************************
 
pci_mmio_init:
    cmp     bx, mmio_pci_addr	; must be set in kernel/data32.inc
    jz	    @f
    mov     eax,-2
    ret
@@:
    call    init_heap	   ; (if not initialized yet)

;       eax = -3 : no i/o space on that BAR
;       eax = -4 : a port i/o BAR register referred
;       eax = -5 : dynamic userspace allocation problem
;***************************************************************************

 
 
pci_mmio_map:
    and     edx,0x0ffff
    cmp     ah,6
    jc     .bar_0_5

    push    ebx
    mov     bl, ah	; bl = BAR# (0..5), however bl=8 for BAR6
    shl     bl, 1
    shl     bl, 1
    add     bl, 0x10	; now bl = BAR offset in PCI config. space
    mov     ax, mmio_pci_addr
    mov     bh, al	; bh = dddddfff
    mov     al, 2	; al : DW to read
    call    pci_read_reg
    or	    eax, eax
    jnz     @f

;   Error codes
;       eax = -1 if no user PCI access allowed,
;       eax =  0 if unmapping failed
;***************************************************************************

 
 
pci_mmio_unmap:
    stdcall user_free, ebx

    ret

 

end if
 

Rev 1353	Rev 1354
Line 19...	Line 19...
19	;; ;;	19	;; ;;
20	;; See file COPYING for details ;;	20	;; See file COPYING for details ;;
21	;; ;;	21	;; ;;
22	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;	22	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Line 23...	Line 23...
23		23
Line 24...	Line 24...
24	$Revision: 1353 $	24	$Revision: 1354 $
25		25
26	;***************************************************************************	26	;***************************************************************************
27	; Function	27	; Function
Line 72...	Line 72...
72	cmp al,9	72	cmp al,9
73	jz pci_write_reg ;word	73	jz pci_write_reg ;word
74	cmp al,10	74	cmp al,10
75	jz pci_write_reg ;dword	75	jz pci_write_reg ;dword
Line -...	Line 76...
-		76
76		77	if defined mmio_pci_addr
77	cmp al,11 ; <<< user-level MMIO functions <<< NEW!	78	cmp al,11 ; <<< user-level MMIO functions <<< NEW!
78	jz pci_mmio_init	79	jz pci_mmio_init
79	cmp al,12	80	cmp al,12
80	jz pci_mmio_map	81	jz pci_mmio_map
81	cmp al,13	82	cmp al,13
82	jz pci_mmio_unmap	83	jz pci_mmio_unmap
Line 83...	Line 84...
83		84	end if
Line 84...	Line 85...
84		85
Line 372...	Line 373...
372	pci_write_reg_err:	373	pci_write_reg_err:
373	xor eax,eax	374	xor eax,eax
374	dec eax	375	dec eax
375	ret	376	ret
Line -...	Line 377...
-		377
376		378	if defined mmio_pci_addr
377	;***************************************************************************	379	;***************************************************************************
378	; Function	380	; Function
379	; pci_mmio_init ; NEW!	381	; pci_mmio_init ; NEW!
380	;	382	;
Line 384...	Line 386...
384	; Error codes	386	; Error codes
385	; eax = -1 : PCI user access blocked,	387	; eax = -1 : PCI user access blocked,
386	; eax = -2 : device not registered for uMMIO service	388	; eax = -2 : device not registered for uMMIO service
387	; eax = -3 : user heap initialization failure	389	; eax = -3 : user heap initialization failure
388	;***************************************************************************	390	;***************************************************************************
389	align 4	-
390	pci_mmio_init:	391	pci_mmio_init:
391	cmp bx, word [mmio_pci_addr] ; must be set in kernel/data32.inc	392	cmp bx, mmio_pci_addr ; must be set in kernel/data32.inc
392	jz @f	393	jz @f
393	mov eax,-2	394	mov eax,-2
394	ret	395	ret
395	@@:	396	@@:
396	call init_heap ; (if not initialized yet)	397	call init_heap ; (if not initialized yet)
Line 425...	Line 426...
425	; eax = -3 : no i/o space on that BAR	426	; eax = -3 : no i/o space on that BAR
426	; eax = -4 : a port i/o BAR register referred	427	; eax = -4 : a port i/o BAR register referred
427	; eax = -5 : dynamic userspace allocation problem	428	; eax = -5 : dynamic userspace allocation problem
428	;***************************************************************************	429	;***************************************************************************
Line 429...	Line -...
429		-
430	align 4	430
431	pci_mmio_map:	431	pci_mmio_map:
432	and edx,0x0ffff	432	and edx,0x0ffff
433	cmp ah,6	433	cmp ah,6
434	jc .bar_0_5	434	jc .bar_0_5
Line 444...	Line 444...
444	push ebx	444	push ebx
445	mov bl, ah ; bl = BAR# (0..5), however bl=8 for BAR6	445	mov bl, ah ; bl = BAR# (0..5), however bl=8 for BAR6
446	shl bl, 1	446	shl bl, 1
447	shl bl, 1	447	shl bl, 1
448	add bl, 0x10 ; now bl = BAR offset in PCI config. space	448	add bl, 0x10 ; now bl = BAR offset in PCI config. space
449	mov ax,word [mmio_pci_addr]	449	mov ax, mmio_pci_addr
450	mov bh, al ; bh = dddddfff	450	mov bh, al ; bh = dddddfff
451	mov al, 2 ; al : DW to read	451	mov al, 2 ; al : DW to read
452	call pci_read_reg	452	call pci_read_reg
453	or eax, eax	453	or eax, eax
454	jnz @f	454	jnz @f
Line 502...	Line 502...
502	; Error codes	502	; Error codes
503	; eax = -1 if no user PCI access allowed,	503	; eax = -1 if no user PCI access allowed,
504	; eax = 0 if unmapping failed	504	; eax = 0 if unmapping failed
505	;***************************************************************************	505	;***************************************************************************
Line 506...	Line -...
506		-
507	align 4	506
508	pci_mmio_unmap:	507	pci_mmio_unmap:
509	stdcall user_free, ebx	508	stdcall user_free, ebx
Line -...	Line 509...
-		509	ret
Line 510...	Line 510...
510	ret	510
Line 511...	Line 511...
511		511	end if
512		512

Subversion Repositories Kolibri OS

(root)/kernel/trunk/bus/pci/pci32.inc @ 1353 – Rev 1353 → 1354