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



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

 

$Revision: 1370 $
 
;***************************************************************************
;   Function
;      pci_api:
;
;   Description
;       entry point for system PCI calls
;***************************************************************************

;mmio_pci_addr	equ  0x400		 ; set actual PCI address here to activate user-MMIO

 

	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 
	jz pci_mmio_init
	cmp al,12
	jz pci_mmio_map
	cmp al,13

pci_write_reg_err:
	xor	eax,eax
	dec	eax
	ret

 
if defined mmio_pci_addr	; must be set above
;***************************************************************************
;   Function
;      pci_mmio_init 
;
;   Description
;       IN:  bx = device's PCI bus address (bbbbbbbbdddddfff)
;   Returns  eax = user heap space available (bytes)
;   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	
    jz	    @f
    mov     eax,-2
    ret
@@:

    ret

 
 
;***************************************************************************
;   Function
;      pci_mmio_map 
;
;   Description
;       maps a block of PCI memory to user-accessible linear address

    mov     eax, edi
    ret

 
;***************************************************************************
;   Function
;      pci_mmio_unmap_page 
;
;   Description
;       unmaps the linear space previously tied to a PCI memory block
;

Rev 1358	Rev 1370
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: 1358 $	24	$Revision: 1370 $
25		25
26	;***************************************************************************	26	;***************************************************************************
27	; Function	27	; Function
28	; pci_api:	28	; pci_api:
29	;	29	;
30	; Description	30	; Description
-		31	; entry point for system PCI calls
-		32	;***************************************************************************
Line 31...	Line 33...
31	; entry point for system PCI calls	33	;mmio_pci_addr equ 0x400 ; set actual PCI address here to activate user-MMIO
Line 32...	Line 34...
32	;***************************************************************************	34
Line 73...	Line 75...
73	jz pci_write_reg ;word	75	jz pci_write_reg ;word
74	cmp al,10	76	cmp al,10
75	jz pci_write_reg ;dword	77	jz pci_write_reg ;dword
Line 76...	Line 78...
76		78
77	if defined mmio_pci_addr	79	if defined mmio_pci_addr
78	cmp al,11 ; <<< user-level MMIO functions <<< NEW!	80	cmp al,11 ; user-level MMIO functions
79	jz pci_mmio_init	81	jz pci_mmio_init
80	cmp al,12	82	cmp al,12
81	jz pci_mmio_map	83	jz pci_mmio_map
82	cmp al,13	84	cmp al,13
Line 373...	Line 375...
373	pci_write_reg_err:	375	pci_write_reg_err:
374	xor eax,eax	376	xor eax,eax
375	dec eax	377	dec eax
376	ret	378	ret
Line 377...	Line 379...
377		379
378	if defined mmio_pci_addr	380	if defined mmio_pci_addr ; must be set above
379	;***************************************************************************	381	;***************************************************************************
380	; Function	382	; Function
381	; pci_mmio_init ; NEW!	383	; pci_mmio_init
382	;	384	;
383	; Description	385	; Description
384	; IN: bx = device's PCI bus address (bbbbbbbbdddddfff)	386	; IN: bx = device's PCI bus address (bbbbbbbbdddddfff)
385	; Returns eax = user heap space available (bytes)	387	; Returns eax = user heap space available (bytes)
386	; Error codes	388	; Error codes
387	; eax = -1 : PCI user access blocked,	389	; eax = -1 : PCI user access blocked,
388	; eax = -2 : device not registered for uMMIO service	390	; eax = -2 : device not registered for uMMIO service
389	; eax = -3 : user heap initialization failure	391	; eax = -3 : user heap initialization failure
390	;***************************************************************************	392	;***************************************************************************
391	pci_mmio_init:	393	pci_mmio_init:
392	cmp bx, mmio_pci_addr ; must be set in kernel/data32.inc	394	cmp bx, mmio_pci_addr
393	jz @f	395	jz @f
394	mov eax,-2	396	mov eax,-2
395	ret	397	ret
396	@@:	398	@@:
Line 403...	Line 405...
403	ret	405	ret
Line 404...	Line 406...
404		406
405		407
406	;***************************************************************************	408	;***************************************************************************
407	; Function	409	; Function
408	; pci_mmio_map ; NEW!	410	; pci_mmio_map
409	;	411	;
410	; Description	412	; Description
411	; maps a block of PCI memory to user-accessible linear address	413	; maps a block of PCI memory to user-accessible linear address
Line 489...	Line 491...
489	mov eax, edi	491	mov eax, edi
490	ret	492	ret
Line 491...	Line 493...
491		493
492	;***************************************************************************	494	;***************************************************************************
493	; Function	495	; Function
494	; pci_mmio_unmap_page ; NEW!	496	; pci_mmio_unmap_page
495	;	497	;
496	; Description	498	; Description
497	; unmaps the linear space previously tied to a PCI memory block	499	; unmaps the linear space previously tied to a PCI memory block
498	;	500	;

Subversion Repositories Kolibri OS

(root)/kernel/trunk/bus/pci/pci32.inc – Rev 1358 → 1370