void
ppc4xx_find_bridges(void)
{
struct pci_controller *hose_a;
struct pcil0_regs *pcip;
unsigned int new_pmm_max;
unsigned int new_pmm_min;
isa_io_base = 0;
isa_mem_base = 0;
pci_dram_offset = 0;
#if (PSR_PCI_ARBIT_EN > 1)
/* Check if running in slave mode */
if ((mfdcr(DCRN_CHPSR) & PSR_PCI_ARBIT_EN) == 0) {
printk("Running as PCI slave, kernel PCI disabled !\n");
return;
}
#endif
/* Setup PCI32 hose */
hose_a = pcibios_alloc_controller();
if (!hose_a)
return;
setup_indirect_pci(hose_a, PPC405_PCI_CONFIG_ADDR,
PPC405_PCI_CONFIG_DATA);
#ifdef CONFIG_XILINX_OCP
/* Eliminate "unused variable" warning for pcip. Optimizer removes. */
pcip = NULL;
new_pmm_min = PPC405_PCI_LOWER_MEM;
new_pmm_max = PPC405_PCI_UPPER_MEM;
#else /* Must be IBM */
pcip = ioremap(PPC4xx_PCI_LCFG_PADDR, PAGE_SIZE);
if (pcip != NULL) {
unsigned int tmp_addr;
unsigned int tmp_size;
unsigned int reg_index;
#if defined(CONFIG_BIOS_FIXUP)
bios_fixup(hose_a, pcip);
#endif
new_pmm_min = 0xffffffff;
for (reg_index = 0; reg_index < 3; reg_index++) {
tmp_size = in_le32((void *) &(pcip->pmm[reg_index].ma)); // *_PMM0MA
if (tmp_size & 0x1) {
tmp_addr = in_le32((void *) &(pcip->pmm[reg_index].pcila)); // *_PMM0PCILA
if (tmp_addr < PPC405_PCI_PHY_MEM_BASE) {
printk(KERN_DEBUG
"Disabling mapping to PCI mem addr 0x%8.8x\n",
tmp_addr);
out_le32((void *) &(pcip->pmm[reg_index].ma), tmp_size & ~1); // *_PMMOMA
} else {
tmp_addr = in_le32((void *) &(pcip->pmm[reg_index].la)); // *_PMMOLA
if (tmp_addr < new_pmm_min)
new_pmm_min = tmp_addr;
tmp_addr =
tmp_addr + (0xffffffff -
(tmp_size &
0xffffc000));
if (tmp_addr > PPC405_PCI_UPPER_MEM) {
new_pmm_max = tmp_addr; // PPC405_PCI_UPPER_MEM
} else {
new_pmm_max =
PPC405_PCI_UPPER_MEM;
}
}
}
} // for
iounmap(pcip);
}
#endif
hose_a->first_busno = 0;
hose_a->last_busno = 0xff;
hose_a->pci_mem_offset = 0;
/* Setup bridge memory/IO ranges & resources
* TODO: Handle firmwares setting up a legacy ISA mem base
*/
hose_a->io_space.start = PPC405_PCI_LOWER_IO;
hose_a->io_space.end = PPC405_PCI_UPPER_IO;
hose_a->mem_space.start = new_pmm_min;
hose_a->mem_space.end = new_pmm_max;
hose_a->io_base_phys = PPC405_PCI_PHY_IO_BASE;
hose_a->io_base_virt = ioremap(hose_a->io_base_phys, 0x10000);
hose_a->io_resource.start = 0;
hose_a->io_resource.end = PPC405_PCI_UPPER_IO - PPC405_PCI_LOWER_IO;
hose_a->io_resource.flags = IORESOURCE_IO;
hose_a->io_resource.name = "PCI I/O";
hose_a->mem_resources[0].start = new_pmm_min;
hose_a->mem_resources[0].end = new_pmm_max;
hose_a->mem_resources[0].flags = IORESOURCE_MEM;
hose_a->mem_resources[0].name = "PCI Memory";
isa_io_base = (int) hose_a->io_base_virt;
isa_mem_base = 0; /* ISA not implemented */
ISA_DMA_THRESHOLD = 0x00ffffff; /* ??? ISA not implemented */
/* Scan busses & initial setup by pci_auto */
hose_a->last_busno = pciauto_bus_scan(hose_a, hose_a->first_busno);
/* Setup ppc_md */
ppc_md.pcibios_fixup = NULL;
ppc_md.pci_exclude_device = ppc4xx_exclude_device;
ppc_md.pcibios_fixup_resources = ppc405_pcibios_fixup_resources;
ppc_md.pci_swizzle = common_swizzle;
ppc_md.pci_map_irq = ppc405_map_irq;
}
void
ppc4xx_find_bridges(void)
{
struct pci_controller *hose_a;
struct pcil0_regs *pcip;
unsigned int tmp_addr;
unsigned int tmp_size;
unsigned int reg_index;
unsigned int new_pmm_max = 0;
unsigned int new_pmm_min = 0;
isa_io_base = 0;
isa_mem_base = 0;
pci_dram_offset = 0;
/* Setup PCI32 hose */
hose_a = pcibios_alloc_controller();
if (!hose_a)
return;
setup_indirect_pci(hose_a, PPC405_PCI_CONFIG_ADDR,
PPC405_PCI_CONFIG_DATA);
pcip = ioremap(PPC4xx_PCI_LCFG_PADDR, PAGE_SIZE);
if (pcip != NULL) {
#if defined(CONFIG_BIOS_FIXUP)
bios_fixup(hose_a, pcip);
#endif
new_pmm_min = 0xffffffff;
for (reg_index = 0; reg_index < 3; reg_index++) {
tmp_size = in_le32(&pcip->pmm[reg_index].ma); // mask & attrs
/* test the enable bit */
if ((tmp_size & 0x1) == 0)
continue;
tmp_addr = in_le32(&pcip->pmm[reg_index].pcila); // PCI addr
if (tmp_addr < PPC405_PCI_PHY_MEM_BASE) {
printk(KERN_DEBUG
"Disabling mapping to PCI mem addr 0x%8.8x\n",
tmp_addr);
out_le32(&pcip->pmm[reg_index].ma, tmp_size & ~1); // *_PMMOMA
continue;
}
tmp_addr = in_le32(&pcip->pmm[reg_index].la); // *_PMMOLA
if (tmp_addr < new_pmm_min)
new_pmm_min = tmp_addr;
tmp_addr = tmp_addr +
(0xffffffff - (tmp_size & 0xffffc000));
if (tmp_addr > PPC405_PCI_UPPER_MEM) {
new_pmm_max = tmp_addr; // PPC405_PCI_UPPER_MEM
} else {
new_pmm_max = PPC405_PCI_UPPER_MEM;
}
} // for
iounmap(pcip);
}
hose_a->first_busno = 0;
hose_a->last_busno = 0xff;
hose_a->pci_mem_offset = 0;
/* Setup bridge memory/IO ranges & resources
* TODO: Handle firmwares setting up a legacy ISA mem base
*/
hose_a->io_space.start = PPC405_PCI_LOWER_IO;
hose_a->io_space.end = PPC405_PCI_UPPER_IO;
hose_a->mem_space.start = new_pmm_min;
hose_a->mem_space.end = new_pmm_max;
hose_a->io_base_phys = PPC405_PCI_PHY_IO_BASE;
hose_a->io_base_virt = ioremap(hose_a->io_base_phys, 0x10000);
hose_a->io_resource.start = 0;
hose_a->io_resource.end = PPC405_PCI_UPPER_IO - PPC405_PCI_LOWER_IO;
hose_a->io_resource.flags = IORESOURCE_IO;
hose_a->io_resource.name = "PCI I/O";
hose_a->mem_resources[0].start = new_pmm_min;
hose_a->mem_resources[0].end = new_pmm_max;
hose_a->mem_resources[0].flags = IORESOURCE_MEM;
hose_a->mem_resources[0].name = "PCI Memory";
isa_io_base = (int) hose_a->io_base_virt;
isa_mem_base = 0; /* ISA not implemented */
ISA_DMA_THRESHOLD = 0x00ffffff; /* ??? ISA not implemented */
/* Scan busses & initial setup by pci_auto */
hose_a->last_busno = pciauto_bus_scan(hose_a, hose_a->first_busno);
hose_a->last_busno = 0;
/* Setup ppc_md */
ppc_md.pcibios_fixup = NULL;
ppc_md.pci_exclude_device = ppc4xx_exclude_device;
ppc_md.pcibios_fixup_resources = ppc405_pcibios_fixup_resources;
ppc_md.pci_swizzle = common_swizzle;
ppc_md.pci_map_irq = ppc405_map_irq;
}