mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 08:28:13 +00:00
19df0d1169
This is to break the code of people who think they are supposed to scribble into the pci device structure - it's off limits. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
149 lines
4.3 KiB
C
149 lines
4.3 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
* SNI specific PCI support for RM200/RM300.
|
|
*
|
|
* Copyright (C) 1997 - 2000, 2003, 04 Ralf Baechle (ralf@linux-mips.org)
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
|
|
#include <asm/mipsregs.h>
|
|
#include <asm/sni.h>
|
|
|
|
#include <irq.h>
|
|
|
|
/*
|
|
* PCIMT Shortcuts ...
|
|
*/
|
|
#define SCSI PCIMT_IRQ_SCSI
|
|
#define ETH PCIMT_IRQ_ETHERNET
|
|
#define INTA PCIMT_IRQ_INTA
|
|
#define INTB PCIMT_IRQ_INTB
|
|
#define INTC PCIMT_IRQ_INTC
|
|
#define INTD PCIMT_IRQ_INTD
|
|
|
|
/*
|
|
* Device 0: PCI EISA Bridge (directly routed)
|
|
* Device 1: NCR53c810 SCSI (directly routed)
|
|
* Device 2: PCnet32 Ethernet (directly routed)
|
|
* Device 3: VGA (routed to INTB)
|
|
* Device 4: Unused
|
|
* Device 5: Slot 2
|
|
* Device 6: Slot 3
|
|
* Device 7: Slot 4
|
|
*
|
|
* Documentation says the VGA is device 5 and device 3 is unused but that
|
|
* seem to be a documentation error. At least on my RM200C the Cirrus
|
|
* Logic CL-GD5434 VGA is device 3.
|
|
*/
|
|
static char irq_tab_rm200[8][5] __initdata = {
|
|
/* INTA INTB INTC INTD */
|
|
{ 0, 0, 0, 0, 0 }, /* EISA bridge */
|
|
{ SCSI, SCSI, SCSI, SCSI, SCSI }, /* SCSI */
|
|
{ ETH, ETH, ETH, ETH, ETH }, /* Ethernet */
|
|
{ INTB, INTB, INTB, INTB, INTB }, /* VGA */
|
|
{ 0, 0, 0, 0, 0 }, /* Unused */
|
|
{ 0, INTB, INTC, INTD, INTA }, /* Slot 2 */
|
|
{ 0, INTC, INTD, INTA, INTB }, /* Slot 3 */
|
|
{ 0, INTD, INTA, INTB, INTC }, /* Slot 4 */
|
|
};
|
|
|
|
/*
|
|
* In Revision D of the RM300 Device 2 has become a normal purpose Slot 1
|
|
*
|
|
* The VGA card is optional for RM300 systems.
|
|
*/
|
|
static char irq_tab_rm300d[8][5] __initdata = {
|
|
/* INTA INTB INTC INTD */
|
|
{ 0, 0, 0, 0, 0 }, /* EISA bridge */
|
|
{ SCSI, SCSI, SCSI, SCSI, SCSI }, /* SCSI */
|
|
{ 0, INTC, INTD, INTA, INTB }, /* Slot 1 */
|
|
{ INTB, INTB, INTB, INTB, INTB }, /* VGA */
|
|
{ 0, 0, 0, 0, 0 }, /* Unused */
|
|
{ 0, INTB, INTC, INTD, INTA }, /* Slot 2 */
|
|
{ 0, INTC, INTD, INTA, INTB }, /* Slot 3 */
|
|
{ 0, INTD, INTA, INTB, INTC }, /* Slot 4 */
|
|
};
|
|
|
|
static char irq_tab_rm300e[5][5] __initdata = {
|
|
/* INTA INTB INTC INTD */
|
|
{ 0, 0, 0, 0, 0 }, /* HOST bridge */
|
|
{ SCSI, SCSI, SCSI, SCSI, SCSI }, /* SCSI */
|
|
{ 0, INTC, INTD, INTA, INTB }, /* Bridge/i960 */
|
|
{ 0, INTD, INTA, INTB, INTC }, /* Slot 1 */
|
|
{ 0, INTA, INTB, INTC, INTD }, /* Slot 2 */
|
|
};
|
|
#undef SCSI
|
|
#undef ETH
|
|
#undef INTA
|
|
#undef INTB
|
|
#undef INTC
|
|
#undef INTD
|
|
|
|
|
|
/*
|
|
* PCIT Shortcuts ...
|
|
*/
|
|
#define SCSI0 PCIT_IRQ_SCSI0
|
|
#define SCSI1 PCIT_IRQ_SCSI1
|
|
#define ETH PCIT_IRQ_ETHERNET
|
|
#define INTA PCIT_IRQ_INTA
|
|
#define INTB PCIT_IRQ_INTB
|
|
#define INTC PCIT_IRQ_INTC
|
|
#define INTD PCIT_IRQ_INTD
|
|
|
|
static char irq_tab_pcit[13][5] __initdata = {
|
|
/* INTA INTB INTC INTD */
|
|
{ 0, 0, 0, 0, 0 }, /* HOST bridge */
|
|
{ SCSI0, SCSI0, SCSI0, SCSI0, SCSI0 }, /* SCSI */
|
|
{ SCSI1, SCSI1, SCSI1, SCSI1, SCSI1 }, /* SCSI */
|
|
{ ETH, ETH, ETH, ETH, ETH }, /* Ethernet */
|
|
{ 0, INTA, INTB, INTC, INTD }, /* PCI-PCI bridge */
|
|
{ 0, 0, 0, 0, 0 }, /* Unused */
|
|
{ 0, 0, 0, 0, 0 }, /* Unused */
|
|
{ 0, 0, 0, 0, 0 }, /* Unused */
|
|
{ 0, INTA, INTB, INTC, INTD }, /* Slot 1 */
|
|
{ 0, INTB, INTC, INTD, INTA }, /* Slot 2 */
|
|
{ 0, INTC, INTD, INTA, INTB }, /* Slot 3 */
|
|
{ 0, INTD, INTA, INTB, INTC }, /* Slot 4 */
|
|
{ 0, INTA, INTB, INTC, INTD }, /* Slot 5 */
|
|
};
|
|
|
|
static inline int is_rm300_revd(void)
|
|
{
|
|
unsigned char csmsr = *(volatile unsigned char *)PCIMT_CSMSR;
|
|
|
|
return (csmsr & 0xa0) == 0x20;
|
|
}
|
|
|
|
int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
switch (sni_brd_type) {
|
|
case SNI_BRD_PCI_TOWER:
|
|
case SNI_BRD_PCI_TOWER_CPLUS:
|
|
return irq_tab_pcit[slot][pin];
|
|
|
|
case SNI_BRD_PCI_MTOWER:
|
|
if (is_rm300_revd())
|
|
return irq_tab_rm300d[slot][pin];
|
|
/* fall through */
|
|
|
|
case SNI_BRD_PCI_DESKTOP:
|
|
return irq_tab_rm200[slot][pin];
|
|
|
|
case SNI_BRD_PCI_MTOWER_CPLUS:
|
|
return irq_tab_rm300e[slot][pin];
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Do platform specific device initialization at pci_enable_device() time */
|
|
int pcibios_plat_dev_init(struct pci_dev *dev)
|
|
{
|
|
return 0;
|
|
}
|