diff options
Diffstat (limited to 'arch/alpha/kernel/sys_nautilus.c')
| -rw-r--r-- | arch/alpha/kernel/sys_nautilus.c | 90 |
1 files changed, 51 insertions, 39 deletions
diff --git a/arch/alpha/kernel/sys_nautilus.c b/arch/alpha/kernel/sys_nautilus.c index 837c0fa58317..13b79960b4b9 100644 --- a/arch/alpha/kernel/sys_nautilus.c +++ b/arch/alpha/kernel/sys_nautilus.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * linux/arch/alpha/kernel/sys_nautilus.c * @@ -31,7 +32,7 @@ #include <linux/pci.h> #include <linux/init.h> #include <linux/reboot.h> -#include <linux/bootmem.h> +#include <linux/memblock.h> #include <linux/bitops.h> #include <asm/ptrace.h> @@ -39,8 +40,6 @@ #include <asm/irq.h> #include <asm/mmu_context.h> #include <asm/io.h> -#include <asm/pci.h> -#include <asm/pgtable.h> #include <asm/core_irongate.h> #include <asm/hwrpb.h> #include <asm/tlbflush.h> @@ -63,7 +62,7 @@ nautilus_init_irq(void) common_init_isa_dma(); } -static int __init +static int nautilus_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { /* Preserve the IRQ set up by the console. */ @@ -79,7 +78,7 @@ nautilus_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) return irq; } -void +static void nautilus_kill_arch(int mode) { struct pci_bus *bus = pci_isa_hose->bus; @@ -128,7 +127,7 @@ naut_sys_machine_check(unsigned long vector, unsigned long la_ptr, /* Machine checks can come from two sources - those on the CPU and those in the system. They are analysed separately but all starts here. */ -void +static void nautilus_machine_check(unsigned long vector, unsigned long la_ptr) { char *mchk_class; @@ -185,74 +184,87 @@ nautilus_machine_check(unsigned long vector, unsigned long la_ptr) mb(); } -extern void pcibios_claim_one_bus(struct pci_bus *); - -static struct resource irongate_io = { - .name = "Irongate PCI IO", - .flags = IORESOURCE_IO, -}; static struct resource irongate_mem = { .name = "Irongate PCI MEM", .flags = IORESOURCE_MEM, }; +static struct resource busn_resource = { + .name = "PCI busn", + .start = 0, + .end = 255, + .flags = IORESOURCE_BUS, +}; -void __init +static void __init nautilus_init_pci(void) { struct pci_controller *hose = hose_head; + struct pci_host_bridge *bridge; struct pci_bus *bus; - struct pci_dev *irongate; unsigned long bus_align, bus_size, pci_mem; unsigned long memtop = max_low_pfn << PAGE_SHIFT; + bridge = pci_alloc_host_bridge(0); + if (!bridge) + return; + + /* Use default IO. */ + pci_add_resource(&bridge->windows, &ioport_resource); + /* Irongate PCI memory aperture, calculate required size before + setting it up. */ + pci_add_resource(&bridge->windows, &irongate_mem); + + pci_add_resource(&bridge->windows, &busn_resource); + bridge->dev.parent = NULL; + bridge->sysdata = hose; + bridge->busnr = 0; + bridge->ops = alpha_mv.pci_ops; + bridge->swizzle_irq = alpha_mv.pci_swizzle; + bridge->map_irq = alpha_mv.pci_map_irq; + bridge->size_windows = 1; + /* Scan our single hose. */ - bus = pci_scan_bus(0, alpha_mv.pci_ops, hose); - hose->bus = bus; + if (pci_scan_root_bus_bridge(bridge)) { + pci_free_host_bridge(bridge); + return; + } + bus = hose->bus = bridge->bus; pcibios_claim_one_bus(bus); - irongate = pci_get_bus_and_slot(0, 0); - bus->self = irongate; - bus->resource[0] = &irongate_io; - bus->resource[1] = &irongate_mem; - pci_bus_size_bridges(bus); - /* IO port range. */ - bus->resource[0]->start = 0; - bus->resource[0]->end = 0xffff; - - /* Set up PCI memory range - limit is hardwired to 0xffffffff, - base must be at aligned to 16Mb. */ - bus_align = bus->resource[1]->start; - bus_size = bus->resource[1]->end + 1 - bus_align; + /* Now we've got the size and alignment of PCI memory resources + stored in irongate_mem. Set up the PCI memory range: limit is + hardwired to 0xffffffff, base must be aligned to 16Mb. */ + bus_align = irongate_mem.start; + bus_size = irongate_mem.end + 1 - bus_align; if (bus_align < 0x1000000UL) bus_align = 0x1000000UL; pci_mem = (0x100000000UL - bus_size) & -bus_align; + irongate_mem.start = pci_mem; + irongate_mem.end = 0xffffffffUL; - bus->resource[1]->start = pci_mem; - bus->resource[1]->end = 0xffffffffUL; - if (request_resource(&iomem_resource, bus->resource[1]) < 0) + /* Register our newly calculated PCI memory window in the resource + tree. */ + if (request_resource(&iomem_resource, &irongate_mem) < 0) printk(KERN_ERR "Failed to request MEM on hose 0\n"); + printk(KERN_INFO "Irongate pci_mem %pR\n", &irongate_mem); + if (pci_mem < memtop) memtop = pci_mem; if (memtop > alpha_mv.min_mem_address) { free_reserved_area(__va(alpha_mv.min_mem_address), __va(memtop), -1, NULL); - printk("nautilus_init_pci: %ldk freed\n", + printk(KERN_INFO "nautilus_init_pci: %ldk freed\n", (memtop - alpha_mv.min_mem_address) >> 10); } - if ((IRONGATE0->dev_vendor >> 16) > 0x7006) /* Albacore? */ IRONGATE0->pci_mem = pci_mem; pci_bus_assign_resources(bus); - - /* pci_common_swizzle() relies on bus->self being NULL - for the root bus, so just clear it. */ - bus->self = NULL; - pci_fixup_irqs(alpha_mv.pci_swizzle, alpha_mv.pci_map_irq); + pci_bus_add_devices(bus); } /* |