161 lines
4.7 KiB
C
161 lines
4.7 KiB
C
/*
|
|
* Copyright (C) 2008 Lemote Technology
|
|
* Copyright (C) 2004 ICT CAS
|
|
* Author: Li xiaoyu, lixy@ict.ac.cn
|
|
*
|
|
* Copyright (C) 2007 Lemote, Inc.
|
|
* Author: Fuxin Zhang, zhangfx@lemote.com
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*/
|
|
#include <linux/init.h>
|
|
#include <linux/pci.h>
|
|
|
|
#include <loongson.h>
|
|
#include <cs5536/cs5536.h>
|
|
#include <cs5536/cs5536_pci.h>
|
|
|
|
/* PCI interrupt pins
|
|
*
|
|
* These should not be changed, or you should consider loongson2f interrupt
|
|
* register and your pci card dispatch
|
|
*/
|
|
|
|
#define PCIA 4
|
|
#define PCIB 5
|
|
#define PCIC 6
|
|
#define PCID 7
|
|
|
|
/* all the pci device has the PCIA pin, check the datasheet. */
|
|
static char irq_tab[][5] __initdata = {
|
|
/* INTA INTB INTC INTD */
|
|
{0, 0, 0, 0, 0}, /* 11: Unused */
|
|
{0, 0, 0, 0, 0}, /* 12: Unused */
|
|
{0, 0, 0, 0, 0}, /* 13: Unused */
|
|
{0, 0, 0, 0, 0}, /* 14: Unused */
|
|
{0, 0, 0, 0, 0}, /* 15: Unused */
|
|
{0, 0, 0, 0, 0}, /* 16: Unused */
|
|
{0, PCIA, 0, 0, 0}, /* 17: RTL8110-0 */
|
|
{0, PCIB, 0, 0, 0}, /* 18: RTL8110-1 */
|
|
{0, PCIC, 0, 0, 0}, /* 19: SiI3114 */
|
|
{0, PCID, 0, 0, 0}, /* 20: 3-ports nec usb */
|
|
{0, PCIA, PCIB, PCIC, PCID}, /* 21: PCI-SLOT */
|
|
{0, 0, 0, 0, 0}, /* 22: Unused */
|
|
{0, 0, 0, 0, 0}, /* 23: Unused */
|
|
{0, 0, 0, 0, 0}, /* 24: Unused */
|
|
{0, 0, 0, 0, 0}, /* 25: Unused */
|
|
{0, 0, 0, 0, 0}, /* 26: Unused */
|
|
{0, 0, 0, 0, 0}, /* 27: Unused */
|
|
};
|
|
|
|
int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
int virq;
|
|
|
|
if ((PCI_SLOT(dev->devfn) != PCI_IDSEL_CS5536)
|
|
&& (PCI_SLOT(dev->devfn) < 32)) {
|
|
virq = irq_tab[slot][pin];
|
|
printk(KERN_INFO "slot: %d, pin: %d, irq: %d\n", slot, pin,
|
|
virq + LOONGSON_IRQ_BASE);
|
|
if (virq != 0)
|
|
return LOONGSON_IRQ_BASE + virq;
|
|
else
|
|
return 0;
|
|
} else if (PCI_SLOT(dev->devfn) == PCI_IDSEL_CS5536) { /* cs5536 */
|
|
switch (PCI_FUNC(dev->devfn)) {
|
|
case 2:
|
|
pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
|
|
CS5536_IDE_INTR);
|
|
return CS5536_IDE_INTR; /* for IDE */
|
|
case 3:
|
|
pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
|
|
CS5536_ACC_INTR);
|
|
return CS5536_ACC_INTR; /* for AUDIO */
|
|
case 4: /* for OHCI */
|
|
case 5: /* for EHCI */
|
|
case 6: /* for UDC */
|
|
case 7: /* for OTG */
|
|
pci_write_config_byte(dev, PCI_INTERRUPT_LINE,
|
|
CS5536_USB_INTR);
|
|
return CS5536_USB_INTR;
|
|
}
|
|
return dev->irq;
|
|
} else {
|
|
printk(KERN_INFO " strange pci slot number.\n");
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/* Do platform specific device initialization at pci_enable_device() time */
|
|
int pcibios_plat_dev_init(struct pci_dev *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/* CS5536 SPEC. fixup */
|
|
static void loongson_cs5536_isa_fixup(struct pci_dev *pdev)
|
|
{
|
|
/* the uart1 and uart2 interrupt in PIC is enabled as default */
|
|
pci_write_config_dword(pdev, PCI_UART1_INT_REG, 1);
|
|
pci_write_config_dword(pdev, PCI_UART2_INT_REG, 1);
|
|
}
|
|
|
|
static void loongson_cs5536_ide_fixup(struct pci_dev *pdev)
|
|
{
|
|
/* setting the mutex pin as IDE function */
|
|
pci_write_config_dword(pdev, PCI_IDE_CFG_REG,
|
|
CS5536_IDE_FLASH_SIGNATURE);
|
|
}
|
|
|
|
static void loongson_cs5536_acc_fixup(struct pci_dev *pdev)
|
|
{
|
|
/* enable the AUDIO interrupt in PIC */
|
|
pci_write_config_dword(pdev, PCI_ACC_INT_REG, 1);
|
|
|
|
pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0xc0);
|
|
}
|
|
|
|
static void loongson_cs5536_ohci_fixup(struct pci_dev *pdev)
|
|
{
|
|
/* enable the OHCI interrupt in PIC */
|
|
/* THE OHCI, EHCI, UDC, OTG are shared with interrupt in PIC */
|
|
pci_write_config_dword(pdev, PCI_OHCI_INT_REG, 1);
|
|
}
|
|
|
|
static void loongson_cs5536_ehci_fixup(struct pci_dev *pdev)
|
|
{
|
|
u32 hi, lo;
|
|
|
|
/* Serial short detect enable */
|
|
_rdmsr(USB_MSR_REG(USB_CONFIG), &hi, &lo);
|
|
_wrmsr(USB_MSR_REG(USB_CONFIG), (1 << 1) | (1 << 3), lo);
|
|
|
|
/* setting the USB2.0 micro frame length */
|
|
pci_write_config_dword(pdev, PCI_EHCI_FLADJ_REG, 0x2000);
|
|
}
|
|
|
|
static void loongson_nec_fixup(struct pci_dev *pdev)
|
|
{
|
|
unsigned int val;
|
|
|
|
pci_read_config_dword(pdev, 0xe0, &val);
|
|
/* Only 2 port be used */
|
|
pci_write_config_dword(pdev, 0xe0, (val & ~3) | 0x2);
|
|
}
|
|
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA,
|
|
loongson_cs5536_isa_fixup);
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_OHC,
|
|
loongson_cs5536_ohci_fixup);
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_EHC,
|
|
loongson_cs5536_ehci_fixup);
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_AUDIO,
|
|
loongson_cs5536_acc_fixup);
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_IDE,
|
|
loongson_cs5536_ide_fixup);
|
|
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_USB,
|
|
loongson_nec_fixup);
|