oemrpci.asm

本源码为BIOS研发技术剖析光盘原代码,是SIS530BIOS完整原代码.

;   directly to an IRQ, then set this field to 0Fxh (where x is 0-F for        ;
;   IRQ 0 - IRQ 15).  This is useful if a motherboard has a PCI IDE chip that  ;
;   has its Int A pin hardwired to IRQ 14.                                     ;
;                                                                              ;
; - Int A Pin, Bitmap of IRQs Routable to Pin: This field should be set to     ;
;   indicate which IRQs the chipset is capable of routing to the slot's (or    ;
;   device's) Int A pin.  If the value for Chipset Reg (see above) was set to  ;
;   0, then set all bits in this field to 0 also.  If the value for Chipset    ;
;   Reg was set to 0Fxh to indicate a hardwired connection to a certain IRQ,   ;
;   then only one bit corresponding to that IRQ should be set in this field.   ;
;                                                                              ;
; - Int B,C,D Pin, Chipset Reg: These fields work exactly like the Chipset Reg ;
;   field for Int A Pin (see above).                                           ;
;                                                                              ;
; - Int B,C,D Pin, Bitmap of IRQs Routable to Pin: These fields work exactly   ;
;   like the corresponding field for Int A Pin (see above).                    ;
;                                                                              ;
; - Physical Slot Number: This field should be set to the slot number of a     ;
;   PCI slot as it appears to the end user.  Numbers like 1, 2, 3, 4 should be ;
;   used.  On board PCI devices such as PCI IDE chips should have this field   ;
;   set to 0 to indicate that the device is not a removable card that is       ;
;   plugged into a slot.  Configuration software can use this value to         ;
;   translate a PCI device number (0 - 1F) to a value that is meaningful to    ;
;   an end user.                                                               ;
;                                                                              ;
; - Reserved Byte: Always set to 0.                                            ;
;                                                                              ;
;------------------------------------------------------------------------------;
        public rth_pci_device_limit
        public rth_pci_device_count
        public rth_pci_dedicated_irqs
        public rth_pci_irq_routing_table

rth_pci_irq_routing_table_signature     db '$IRT'       ;So BCP can find table

rth_pci_device_limit    db 7    ;Total number of table entries below
rth_pci_device_count    db 7    ;Number of table entries actually used

rth_pci_dedicated_irqs  dw 0000000000000000b ;Bitmap of IRQs dedicated to PCI


rth_pci_irq_routing_table       label byte
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; USB         |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
;             | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 1    | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     008h,      062h,   1101111010111000b,  000h,   0000000000000000b,  000h,   0000000000000000b,  000h,   0000000000000000b,  0,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AGP Bridge  |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
;             | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 2    | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     010h,      041h,   1101111010111000b,  042h,   1101111010111000b,  043h,   1101111010111000b,  044h,   1101111010111000b,  0,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; Slot 1      |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AD#20       | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 9    | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     048h,      041h,   1101111010111000b,  042h,   1101111010111000b,  043h,   1101111010111000b,  044h,   1101111010111000b,  1,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; Slot 2      |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AD#21       | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 10   | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     050h,      044h,   1101111010111000b,  041h,   1101111010111000b,  042h,   1101111010111000b,  043h,   1101111010111000b,  2,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; Slot 3      |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AD#22       | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 11   | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     058h,      043h,   1101111010111000b,  044h,   1101111010111000b,  041h,   1101111010111000b,  042h,   1101111010111000b,  3,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; Slot 4      |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AD#23       | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 12   | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     060h,      042h,   1101111010111000b,  043h,   1101111010111000b,  044h,   1101111010111000b,  041h,   1101111010111000b,  4,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; Audio       |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AD#24       | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 13   | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     068h,      044h,   1101111010111000b,  000h,   0000000000000000b,  000h,   0000000000000000b,  000h,   0000000000000000b,  0,        0        >

align   16
        public  ms_irq_route_table_sign
ms_irq_route_table_sign label byte
                        db      "$PIR"
ms_irq_route_table_ver  dw      0100h
ms_irq_route_table_size dw      32+(6*16)
ms_irq_route_table_bus  db      00h
ms_irq_route_table_dev  db      S5595_PCI2ISA_DEV_FUNC_NUM 
ms_irq_route_table_irq  dw      0h
ms_irq_route_table_id   dd      00081039h               ; SiS5595
ms_irq_route_table_mini dd      0h
ms_irq_route_table_resd db      11 dup(0)
ms_irq_route_table_cksm db      0
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; USB         |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
;             | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 1    | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |
;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
pci_irq_entry < 00h,     008h,      062h,   1101111010111000b,  000h,   0000000000000000b,  000h,   0000000000000000b,  000h,   0000000000000000b,  0,        0        >

;-------------+-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
; AGP Bridge  |  Device Location  |        Int A Pin          |        Int B Pin          |        Int C Pin          |        Int D Pin          |                    |
;             +-------------------+---------------------------+---------------------------+---------------------------+---------------------------+--------------------+
;             | PCI Bus  Dev Num  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Chipset   Bitmap of IRQs  | Physical  Reserved |
; Device 2    | Number   (Shl 3)  | Reg       Routable to Pin | Reg       Routable Pin    | Reg       Routable Pin    | Reg       Routable Pin    | Slot Num  Byte     |