diff options
Diffstat (limited to 'arch/powerpc/kernel')
24 files changed, 572 insertions, 346 deletions
diff --git a/arch/powerpc/kernel/cpu_setup_power4.S b/arch/powerpc/kernel/cpu_setup_power4.S index b61d86e7ceb6..271418308d53 100644 --- a/arch/powerpc/kernel/cpu_setup_power4.S +++ b/arch/powerpc/kernel/cpu_setup_power4.S @@ -73,23 +73,6 @@ _GLOBAL(__970_cpu_preinit) isync blr -_GLOBAL(__setup_cpu_power4) - blr - -_GLOBAL(__setup_cpu_be) - /* Set large page sizes LP=0: 16MB, LP=1: 64KB */ - addi r3, 0, 0 - ori r3, r3, HID6_LB - sldi r3, r3, 32 - nor r3, r3, r3 - mfspr r4, SPRN_HID6 - and r4, r4, r3 - addi r3, 0, 0x02000 - sldi r3, r3, 32 - or r4, r4, r3 - mtspr SPRN_HID6, r4 - blr - _GLOBAL(__setup_cpu_ppc970) mfspr r0,SPRN_HID0 li r11,5 /* clear DOZE and SLEEP */ diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 3f7182db9ed5..0c487ee4d483 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -30,11 +30,7 @@ EXPORT_SYMBOL(cur_cpu_spec); * part of the cputable though. That has to be fixed for both ppc32 * and ppc64 */ -#ifdef CONFIG_PPC64 -extern void __setup_cpu_power3(unsigned long offset, struct cpu_spec* spec); -extern void __setup_cpu_power4(unsigned long offset, struct cpu_spec* spec); -extern void __setup_cpu_be(unsigned long offset, struct cpu_spec* spec); -#else +#ifdef CONFIG_PPC32 extern void __setup_cpu_603(unsigned long offset, struct cpu_spec* spec); extern void __setup_cpu_604(unsigned long offset, struct cpu_spec* spec); extern void __setup_cpu_750(unsigned long offset, struct cpu_spec* spec); @@ -82,7 +78,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 8, - .cpu_setup = __setup_cpu_power3, .oprofile_cpu_type = "ppc64/power3", .oprofile_type = PPC_OPROFILE_RS64, .platform = "power3", @@ -96,7 +91,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 8, - .cpu_setup = __setup_cpu_power3, .oprofile_cpu_type = "ppc64/power3", .oprofile_type = PPC_OPROFILE_RS64, .platform = "power3", @@ -110,7 +104,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 8, - .cpu_setup = __setup_cpu_power3, .oprofile_cpu_type = "ppc64/rs64", .oprofile_type = PPC_OPROFILE_RS64, .platform = "rs64", @@ -124,7 +117,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 8, - .cpu_setup = __setup_cpu_power3, .oprofile_cpu_type = "ppc64/rs64", .oprofile_type = PPC_OPROFILE_RS64, .platform = "rs64", @@ -138,7 +130,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 8, - .cpu_setup = __setup_cpu_power3, .oprofile_cpu_type = "ppc64/rs64", .oprofile_type = PPC_OPROFILE_RS64, .platform = "rs64", @@ -152,7 +143,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 8, - .cpu_setup = __setup_cpu_power3, .oprofile_cpu_type = "ppc64/rs64", .oprofile_type = PPC_OPROFILE_RS64, .platform = "rs64", @@ -166,7 +156,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 8, - .cpu_setup = __setup_cpu_power4, .oprofile_cpu_type = "ppc64/power4", .oprofile_type = PPC_OPROFILE_POWER4, .platform = "power4", @@ -180,7 +169,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 8, - .cpu_setup = __setup_cpu_power4, .oprofile_cpu_type = "ppc64/power4", .oprofile_type = PPC_OPROFILE_POWER4, .platform = "power4", @@ -246,7 +234,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 6, - .cpu_setup = __setup_cpu_power4, .oprofile_cpu_type = "ppc64/power5", .oprofile_type = PPC_OPROFILE_POWER4, .platform = "power5", @@ -260,7 +247,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 6, - .cpu_setup = __setup_cpu_power4, .oprofile_cpu_type = "ppc64/power5+", .oprofile_type = PPC_OPROFILE_POWER4, .platform = "power5+", @@ -274,7 +260,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 6, - .cpu_setup = __setup_cpu_power4, .oprofile_cpu_type = "ppc64/power6", .oprofile_type = PPC_OPROFILE_POWER4, .platform = "power6", @@ -289,7 +274,6 @@ struct cpu_spec cpu_specs[] = { PPC_FEATURE_SMT, .icache_bsize = 128, .dcache_bsize = 128, - .cpu_setup = __setup_cpu_be, .platform = "ppc-cell-be", }, { /* default match */ @@ -301,7 +285,6 @@ struct cpu_spec cpu_specs[] = { .icache_bsize = 128, .dcache_bsize = 128, .num_pmcs = 6, - .cpu_setup = __setup_cpu_power4, .platform = "power4", } #endif /* CONFIG_PPC64 */ diff --git a/arch/powerpc/kernel/crash.c b/arch/powerpc/kernel/crash.c index 778f22fd85d2..dbcb85994f46 100644 --- a/arch/powerpc/kernel/crash.c +++ b/arch/powerpc/kernel/crash.c @@ -22,6 +22,7 @@ #include <linux/elf.h> #include <linux/elfcore.h> #include <linux/init.h> +#include <linux/irq.h> #include <linux/types.h> #include <asm/processor.h> @@ -174,6 +175,8 @@ static void crash_kexec_prepare_cpus(void) void default_machine_crash_shutdown(struct pt_regs *regs) { + unsigned int irq; + /* * This function is only called after the system * has paniced or is otherwise in a critical state. @@ -186,6 +189,16 @@ void default_machine_crash_shutdown(struct pt_regs *regs) */ local_irq_disable(); + for_each_irq(irq) { + struct irq_desc *desc = irq_descp(irq); + + if (desc->status & IRQ_INPROGRESS) + desc->handler->end(irq); + + if (!(desc->status & IRQ_DISABLED)) + desc->handler->disable(irq); + } + if (ppc_md.kexec_cpu_down) ppc_md.kexec_cpu_down(1, 0); diff --git a/arch/powerpc/kernel/crash_dump.c b/arch/powerpc/kernel/crash_dump.c index 764d07329716..371973be8d71 100644 --- a/arch/powerpc/kernel/crash_dump.c +++ b/arch/powerpc/kernel/crash_dump.c @@ -25,6 +25,11 @@ #define DBG(fmt...) #endif +void reserve_kdump_trampoline(void) +{ + lmb_reserve(0, KDUMP_RESERVE_LIMIT); +} + static void __init create_trampoline(unsigned long addr) { /* The maximum range of a single instruction branch, is the current @@ -39,11 +44,11 @@ static void __init create_trampoline(unsigned long addr) create_branch(addr + 4, addr + PHYSICAL_START, 0); } -void __init kdump_setup(void) +void __init setup_kdump_trampoline(void) { unsigned long i; - DBG(" -> kdump_setup()\n"); + DBG(" -> setup_kdump_trampoline()\n"); for (i = KDUMP_TRAMPOLINE_START; i < KDUMP_TRAMPOLINE_END; i += 8) { create_trampoline(i); @@ -52,7 +57,7 @@ void __init kdump_setup(void) create_trampoline(__pa(system_reset_fwnmi) - PHYSICAL_START); create_trampoline(__pa(machine_check_fwnmi) - PHYSICAL_START); - DBG(" <- kdump_setup()\n"); + DBG(" <- setup_kdump_trampoline()\n"); } #ifdef CONFIG_PROC_VMCORE diff --git a/arch/powerpc/kernel/iomap.c b/arch/powerpc/kernel/iomap.c index fd8214caedee..a13a93dfc655 100644 --- a/arch/powerpc/kernel/iomap.c +++ b/arch/powerpc/kernel/iomap.c @@ -106,8 +106,6 @@ EXPORT_SYMBOL(iowrite32_rep); void __iomem *ioport_map(unsigned long port, unsigned int len) { - if (!_IO_IS_VALID(port)) - return NULL; return (void __iomem *) (port+pci_io_base); } diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c index 2cbde865d4f5..c02deaab26c7 100644 --- a/arch/powerpc/kernel/lparcfg.c +++ b/arch/powerpc/kernel/lparcfg.c @@ -521,10 +521,10 @@ static ssize_t lparcfg_write(struct file *file, const char __user * buf, current_weight = (resource >> 5 * 8) & 0xFF; - pr_debug("%s: current_entitled = %lu, current_weight = %lu\n", + pr_debug("%s: current_entitled = %lu, current_weight = %u\n", __FUNCTION__, current_entitled, current_weight); - pr_debug("%s: new_entitled = %lu, new_weight = %lu\n", + pr_debug("%s: new_entitled = %lu, new_weight = %u\n", __FUNCTION__, *new_entitled_ptr, *new_weight_ptr); retval = plpar_hcall_norets(H_SET_PPP, *new_entitled_ptr, diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c index ee166c586642..a8fa04ef27cd 100644 --- a/arch/powerpc/kernel/machine_kexec_64.c +++ b/arch/powerpc/kernel/machine_kexec_64.c @@ -21,6 +21,7 @@ #include <asm/machdep.h> #include <asm/cacheflush.h> #include <asm/paca.h> +#include <asm/lmb.h> #include <asm/mmu.h> #include <asm/sections.h> /* _end */ #include <asm/prom.h> @@ -335,7 +336,105 @@ static void __init export_htab_values(void) of_node_put(node); } +static struct property crashk_base_prop = { + .name = "linux,crashkernel-base", + .length = sizeof(unsigned long), + .value = (unsigned char *)&crashk_res.start, +}; + +static unsigned long crashk_size; + +static struct property crashk_size_prop = { + .name = "linux,crashkernel-size", + .length = sizeof(unsigned long), + .value = (unsigned char *)&crashk_size, +}; + +static void __init export_crashk_values(void) +{ + struct device_node *node; + struct property *prop; + + node = of_find_node_by_path("/chosen"); + if (!node) + return; + + /* There might be existing crash kernel properties, but we can't + * be sure what's in them, so remove them. */ + prop = of_find_property(node, "linux,crashkernel-base", NULL); + if (prop) + prom_remove_property(node, prop); + + prop = of_find_property(node, "linux,crashkernel-size", NULL); + if (prop) + prom_remove_property(node, prop); + + if (crashk_res.start != 0) { + prom_add_property(node, &crashk_base_prop); + crashk_size = crashk_res.end - crashk_res.start + 1; + prom_add_property(node, &crashk_size_prop); + } + + of_node_put(node); +} + void __init kexec_setup(void) { export_htab_values(); + export_crashk_values(); +} + +static int __init early_parse_crashk(char *p) +{ + unsigned long size; + + if (!p) + return 1; + + size = memparse(p, &p); + + if (*p == '@') + crashk_res.start = memparse(p + 1, &p); + else + crashk_res.start = KDUMP_KERNELBASE; + + crashk_res.end = crashk_res.start + size - 1; + + return 0; +} +early_param("crashkernel", early_parse_crashk); + +void __init reserve_crashkernel(void) +{ + unsigned long size; + + if (crashk_res.start == 0) + return; + + /* We might have got these values via the command line or the + * device tree, either way sanitise them now. */ + + size = crashk_res.end - crashk_res.start + 1; + + if (crashk_res.start != KDUMP_KERNELBASE) + printk("Crash kernel location must be 0x%x\n", + KDUMP_KERNELBASE); + + crashk_res.start = KDUMP_KERNELBASE; + size = PAGE_ALIGN(size); + crashk_res.end = crashk_res.start + size - 1; + + /* Crash kernel trumps memory limit */ + if (memory_limit && memory_limit <= crashk_res.end) { + memory_limit = crashk_res.end + 1; + printk("Adjusted memory limit for crashkernel, now 0x%lx\n", + memory_limit); + } + + lmb_reserve(crashk_res.start, size); +} + +int overlaps_crashkernel(unsigned long start, unsigned long size) +{ + return (start + size) > crashk_res.start && start <= crashk_res.end; } diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index be982023409e..01d3916c4cb1 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -216,7 +216,7 @@ _GLOBAL(call_setup_cpu) lwz r4,0(r4) add r4,r4,r3 lwz r5,CPU_SPEC_SETUP(r4) - cmpi 0,r5,0 + cmpwi 0,r5,0 add r5,r5,r3 beqlr mtctr r5 diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index 2778cce058e2..e8883d42c43c 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S @@ -482,7 +482,9 @@ _GLOBAL(identify_cpu) sub r0,r3,r5 std r0,0(r4) ld r4,CPU_SPEC_SETUP(r3) + cmpdi 0,r4,0 add r4,r4,r5 + beqlr ld r4,0(r4) add r4,r4,r5 mtctr r4 @@ -768,9 +770,6 @@ _GLOBAL(giveup_altivec) #endif /* CONFIG_ALTIVEC */ -_GLOBAL(__setup_cpu_power3) - blr - _GLOBAL(execve) li r0,__NR_execve sc diff --git a/arch/powerpc/kernel/nvram_64.c b/arch/powerpc/kernel/nvram_64.c index ada50aa5b600..6960f090991e 100644 --- a/arch/powerpc/kernel/nvram_64.c +++ b/arch/powerpc/kernel/nvram_64.c @@ -204,7 +204,7 @@ static void nvram_print_partitions(char * label) printk(KERN_WARNING "indx\t\tsig\tchks\tlen\tname\n"); list_for_each(p, &nvram_part->partition) { tmp_part = list_entry(p, struct nvram_partition, partition); - printk(KERN_WARNING "%d \t%02x\t%02x\t%d\t%s\n", + printk(KERN_WARNING "%4d \t%02x\t%02x\t%d\t%s\n", tmp_part->index, tmp_part->header.signature, tmp_part->header.checksum, tmp_part->header.length, tmp_part->header.name); diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index 4c4449be81ce..30a4e6a1368a 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -42,14 +42,6 @@ unsigned long pci_probe_only = 1; int pci_assign_all_buses = 0; -/* - * legal IO pages under MAX_ISA_PORT. This is to ensure we don't touch - * devices we don't have access to. - */ -unsigned long io_page_mask; - -EXPORT_SYMBOL(io_page_mask); - #ifdef CONFIG_PPC_MULTIPLATFORM static void fixup_resource(struct resource *res, struct pci_dev *dev); static void do_bus_setup(struct pci_bus *bus); @@ -605,7 +597,7 @@ static int __init pcibios_init(void) iSeries_pcibios_init(); #endif - printk("PCI: Probing PCI hardware\n"); + printk(KERN_DEBUG "PCI: Probing PCI hardware\n"); /* Scan all of the recorded PCI controllers. */ list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { @@ -630,14 +622,14 @@ static int __init pcibios_init(void) /* Cache the location of the ISA bridge (if we have one) */ ppc64_isabridge_dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); if (ppc64_isabridge_dev != NULL) - printk("ISA bridge at %s\n", pci_name(ppc64_isabridge_dev)); + printk(KERN_DEBUG "ISA bridge at %s\n", pci_name(ppc64_isabridge_dev)); #ifdef CONFIG_PPC_MULTIPLATFORM /* map in PCI I/O space */ phbs_remap_io(); #endif - printk("PCI: Probing PCI hardware done\n"); + printk(KERN_DEBUG "PCI: Probing PCI hardware done\n"); return 0; } @@ -804,7 +796,7 @@ static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp, else prot |= _PAGE_GUARDED; - printk("PCI map for %s:%lx, prot: %lx\n", pci_name(dev), rp->start, + printk(KERN_DEBUG "PCI map for %s:%lx, prot: %lx\n", pci_name(dev), rp->start, prot); return __pgprot(prot); @@ -894,8 +886,8 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, return ret; } -#ifdef CONFIG_PPC_MULTIPLATFORM -static ssize_t pci_show_devspec(struct device *dev, struct device_attribute *attr, char *buf) +static ssize_t pci_show_devspec(struct device *dev, + struct device_attribute *attr, char *buf) { struct pci_dev *pdev; struct device_node *np; @@ -907,13 +899,10 @@ static ssize_t pci_show_devspec(struct device *dev, struct device_attribute *att return sprintf(buf, "%s", np->full_name); } static DEVICE_ATTR(devspec, S_IRUGO, pci_show_devspec, NULL); -#endif /* CONFIG_PPC_MULTIPLATFORM */ void pcibios_add_platform_entries(struct pci_dev *pdev) { -#ifdef CONFIG_PPC_MULTIPLATFORM device_create_file(&pdev->dev, &dev_attr_devspec); -#endif /* CONFIG_PPC_MULTIPLATFORM */ } #ifdef CONFIG_PPC_MULTIPLATFORM @@ -1104,8 +1093,6 @@ void __init pci_setup_phb_io(struct pci_controller *hose, int primary) pci_process_ISA_OF_ranges(isa_dn, hose->io_base_phys, hose->io_base_virt); of_node_put(isa_dn); - /* Allow all IO */ - io_page_mask = -1; } } @@ -1212,7 +1199,7 @@ int remap_bus_range(struct pci_bus *bus) return 1; if (start_phys == 0) return 1; - printk("mapping IO %lx -> %lx, size: %lx\n", start_phys, start_virt, size); + printk(KERN_DEBUG "mapping IO %lx -> %lx, size: %lx\n", start_phys, start_virt, size); if (__ioremap_explicit(start_phys, start_virt, size, _PAGE_NO_CACHE | _PAGE_GUARDED)) return 1; @@ -1232,27 +1219,13 @@ static void phbs_remap_io(void) static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev) { struct pci_controller *hose = pci_bus_to_host(dev->bus); - unsigned long start, end, mask, offset; + unsigned long offset; if (res->flags & IORESOURCE_IO) { offset = (unsigned long)hose->io_base_virt - pci_io_base; - start = res->start += offset; - end = res->end += offset; - - /* Need to allow IO access to pages that are in the - ISA range */ - if (start < MAX_ISA_PORT) { - if (end > MAX_ISA_PORT) - end = MAX_ISA_PORT; - - start >>= PAGE_SHIFT; - end >>= PAGE_SHIFT; - - /* get the range of pages for the map */ - mask = ((1 << (end+1)) - 1) ^ ((1 << start) - 1); - io_page_mask |= mask; - } + res->start += offset; + res->end += offset; } else if (res->flags & IORESOURCE_MEM) { res->start += hose->pci_mem_offset; res->end += hose->pci_mem_offset; diff --git a/arch/powerpc/kernel/pci_dn.c b/arch/powerpc/kernel/pci_dn.c index 12c4c9e9bbc7..1c18953514c3 100644 --- a/arch/powerpc/kernel/pci_dn.c +++ b/arch/powerpc/kernel/pci_dn.c @@ -31,6 +31,7 @@ #include <asm/pci-bridge.h> #include <asm/pSeries_reconfig.h> #include <asm/ppc-pci.h> +#include <asm/firmware.h> /* * Traverse_func that inits the PCI fields of the device node. @@ -59,6 +60,11 @@ static void * __devinit update_dn_pci_info(struct device_node *dn, void *data) pdn->busno = (regs[0] >> 16) & 0xff; pdn->devfn = (regs[0] >> 8) & 0xff; } + if (firmware_has_feature(FW_FEATURE_ISERIES)) { + u32 *busp = (u32 *)get_property(dn, "linux,subbus", NULL); + if (busp) + pdn->bussubno = *busp; + } pdn->pci_ext_config_space = (type && *type == 1); return NULL; diff --git a/arch/powerpc/kernel/pci_iommu.c b/arch/powerpc/kernel/pci_iommu.c index c1d95e14bbed..48aa82d01624 100644 --- a/arch/powerpc/kernel/pci_iommu.c +++ b/arch/powerpc/kernel/pci_iommu.c @@ -44,16 +44,16 @@ */ #define PCI_GET_DN(dev) ((struct device_node *)((dev)->sysdata)) -static inline struct iommu_table *devnode_table(struct device *dev) +static inline struct iommu_table *device_to_table(struct device *hwdev) { struct pci_dev *pdev; - if (!dev) { + if (!hwdev) { pdev = ppc64_isabridge_dev; if (!pdev) return NULL; } else - pdev = to_pci_dev(dev); + pdev = to_pci_dev(hwdev); return PCI_DN(PCI_GET_DN(pdev))->iommu_table; } @@ -85,14 +85,14 @@ static inline unsigned long device_to_mask(struct device *hwdev) static void *pci_iommu_alloc_coherent(struct device *hwdev, size_t size, dma_addr_t *dma_handle, gfp_t flag) { - return iommu_alloc_coherent(devnode_table(hwdev), size, dma_handle, + return iommu_alloc_coherent(device_to_table(hwdev), size, dma_handle, device_to_mask(hwdev), flag); } static void pci_iommu_free_coherent(struct device *hwdev, size_t size, void *vaddr, dma_addr_t dma_handle) { - iommu_free_coherent(devnode_table(hwdev), size, vaddr, dma_handle); + iommu_free_coherent(device_to_table(hwdev), size, vaddr, dma_handle); } /* Creates TCEs for a user provided buffer. The user buffer must be @@ -104,7 +104,7 @@ static void pci_iommu_free_coherent(struct device *hwdev, size_t size, static dma_addr_t pci_iommu_map_single(struct device *hwdev, void *vaddr, size_t size, enum dma_data_direction direction) { - return iommu_map_single(devnode_table(hwdev), vaddr, size, + return iommu_map_single(device_to_table(hwdev), vaddr, size, device_to_mask(hwdev), direction); } @@ -112,27 +112,27 @@ static dma_addr_t pci_iommu_map_single(struct device *hwdev, void *vaddr, static void pci_iommu_unmap_single(struct device *hwdev, dma_addr_t dma_handle, size_t size, enum dma_data_direction direction) { - iommu_unmap_single(devnode_table(hwdev), dma_handle, size, direction); + iommu_unmap_single(device_to_table(hwdev), dma_handle, size, direction); } static int pci_iommu_map_sg(struct device *pdev, struct scatterlist *sglist, int nelems, enum dma_data_direction direction) { - return iommu_map_sg(pdev, devnode_table(pdev), sglist, + return iommu_map_sg(pdev, device_to_table(pdev), sglist, nelems, device_to_mask(pdev), direction); } static void pci_iommu_unmap_sg(struct device *pdev, struct scatterlist *sglist, int nelems, enum dma_data_direction direction) { - iommu_unmap_sg(devnode_table(pdev), sglist, nelems, direction); + iommu_unmap_sg(device_to_table(pdev), sglist, nelems, direction); } /* We support DMA to/from any memory page via the iommu */ static int pci_iommu_dma_supported(struct device *dev, u64 mask) { - struct iommu_table *tbl = devnode_table(dev); + struct iommu_table *tbl = device_to_table(dev); if (!tbl || tbl->it_offset > mask) { printk(KERN_INFO "Warning: IOMMU table offset too big for device mask\n"); diff --git a/arch/powerpc/kernel/proc_ppc64.c b/arch/powerpc/kernel/proc_ppc64.c index 3c2cf661f6d9..2b87f82df135 100644 --- a/arch/powerpc/kernel/proc_ppc64.c +++ b/arch/powerpc/kernel/proc_ppc64.c @@ -52,7 +52,7 @@ static int __init proc_ppc64_create(void) if (!root) return 1; - if (!machine_is(pseries) && !machine_is(cell)) + if (!of_find_node_by_path("/rtas")) return 0; if (!proc_mkdir("rtas", root)) diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 9a07f97f0712..969f4abcc0be 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -50,6 +50,7 @@ #include <asm/machdep.h> #include <asm/pSeries_reconfig.h> #include <asm/pci-bridge.h> +#include <asm/kexec.h> #ifdef DEBUG #define DBG(fmt...) printk(KERN_ERR fmt) @@ -836,6 +837,42 @@ static unsigned long __init unflatten_dt_node(unsigned long mem, return mem; } +static int __init early_parse_mem(char *p) +{ + if (!p) + return 1; + + memory_limit = PAGE_ALIGN(memparse(p, &p)); + DBG("memory limit = 0x%lx\n", memory_limit); + + return 0; +} +early_param("mem", early_parse_mem); + +/* + * The device tree may be allocated below our memory limit, or inside the + * crash kernel region for kdump. If so, move it out now. + */ +static void move_device_tree(void) +{ + unsigned long start, size; + void *p; + + DBG("-> move_device_tree\n"); + + start = __pa(initial_boot_params); + size = initial_boot_params->totalsize; + + if ((memory_limit && (start + size) > memory_limit) || + overlaps_crashkernel(start, size)) { + p = __va(lmb_alloc_base(size, PAGE_SIZE, lmb.rmo_size)); + memcpy(p, initial_boot_params, size); + initial_boot_params = (struct boot_param_header *)p; + DBG("Moved device tree to 0x%p\n", p); + } + + DBG("<- move_device_tree\n"); +} /** * unflattens the device-tree passed by the firmware, creating the @@ -1070,6 +1107,7 @@ static int __init early_init_dt_scan_chosen(unsigned long node, iommu_force_on = 1; #endif + /* mem=x on the command line is the preferred mechanism */ lprop = of_get_flat_dt_prop(node, "linux,memory-limit", NULL); if (lprop) memory_limit = *lprop; @@ -1123,17 +1161,6 @@ static int __init early_init_dt_scan_chosen(unsigned long node, DBG("Command line is: %s\n", cmd_line); - if (strstr(cmd_line, "mem=")) { - char *p, *q; - - for (q = cmd_line; (p = strstr(q, "mem=")) != 0; ) { - q = p + 4; - if (p > cmd_line && p[-1] != ' ') - continue; - memory_limit = memparse(q, &q); - } - } - /* break now */ return 1; } @@ -1240,6 +1267,11 @@ static void __init early_reserve_mem(void) reserve_map = (u64 *)(((unsigned long)initial_boot_params) + initial_boot_params->off_mem_rsvmap); + + /* before we do anything, lets reserve the dt blob */ + lmb_reserve(__pa((unsigned long)initial_boot_params), + initial_boot_params->totalsize); + #ifdef CONFIG_PPC32 /* * Handle the case where we might be booting from an old kexec @@ -1292,18 +1324,26 @@ void __init early_init_devtree(void *params) lmb_init(); of_scan_flat_dt(early_init_dt_scan_root, NULL); of_scan_flat_dt(early_init_dt_scan_memory, NULL); - lmb_enforce_memory_limit(memory_limit); - lmb_analyze(); - DBG("Phys. mem: %lx\n", lmb_phys_mem_size()); + /* Save command line for /proc/cmdline and then parse parameters */ + strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE); + parse_early_param(); /* Reserve LMB regions used by kernel, initrd, dt, etc... */ lmb_reserve(PHYSICAL_START, __pa(klimit) - PHYSICAL_START); -#ifdef CONFIG_CRASH_DUMP - lmb_reserve(0, KDUMP_RESERVE_LIMIT); -#endif + reserve_kdump_trampoline(); + reserve_crashkernel(); early_reserve_mem(); + lmb_enforce_memory_limit(memory_limit); + lmb_analyze(); + + DBG("Phys. mem: %lx\n", lmb_phys_mem_size()); + + /* We may need to relocate the flat tree, do it now. + * FIXME .. and the initrd too? */ + move_device_tree(); + DBG("Scanning CPUs ...\n"); /* Retreive CPU related informations from the flat tree @@ -2053,29 +2093,3 @@ int prom_update_property(struct device_node *np, return 0; } -#ifdef CONFIG_KEXEC -/* We may have allocated the flat device tree inside the crash kernel region - * in prom_init. If so we need to move it out into regular memory. */ -void kdump_move_device_tree(void) -{ - unsigned long start, end; - struct boot_param_header *new; - - start = __pa((unsigned long)initial_boot_params); - end = start + initial_boot_params->totalsize; - - if (end < crashk_res.start || start > crashk_res.end) - return; - - new = (struct boot_param_header*) - __va(lmb_alloc(initial_boot_params->totalsize, PAGE_SIZE)); - - memcpy(new, initial_boot_params, initial_boot_params->totalsize); - - initial_boot_params = new; - - DBG("Flat device tree blob moved to %p\n", initial_boot_params); - - /* XXX should we unreserve the old DT? */ -} -#endif /* CONFIG_KEXEC */ diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c index 41e9ab40cd54..5908690d0868 100644 --- a/arch/powerpc/kernel/prom_init.c +++ b/arch/powerpc/kernel/prom_init.c @@ -194,19 +194,12 @@ static int __initdata of_platform; static char __initdata prom_cmd_line[COMMAND_LINE_SIZE]; -static unsigned long __initdata prom_memory_limit; - static unsigned long __initdata alloc_top; static unsigned long __initdata alloc_top_high; static unsigned long __initdata alloc_bottom; static unsigned long __initdata rmo_top; static unsigned long __initdata ram_top; -#ifdef CONFIG_KEXEC -static unsigned long __initdata prom_crashk_base; -static unsigned long __initdata prom_crashk_size; -#endif - static struct mem_map_entry __initdata mem_reserve_map[MEM_RESERVE_MAP_SIZE]; static int __initdata mem_reserve_cnt; @@ -593,45 +586,6 @@ static void __init early_cmdline_parse(void) RELOC(iommu_force_on) = 1; } #endif - - opt = strstr(RELOC(prom_cmd_line), RELOC("mem=")); - if (opt) { - opt += 4; - RELOC(prom_memory_limit) = prom_memparse(opt, (const char **)&opt); -#ifdef CONFIG_PPC64 - /* Align to 16 MB == size of ppc64 large page */ - RELOC(prom_memory_limit) = ALIGN(RELOC(prom_memory_limit), 0x1000000); -#endif - } - -#ifdef CONFIG_KEXEC - /* - * crashkernel=size@addr specifies the location to reserve for - * crash kernel. - */ - opt = strstr(RELOC(prom_cmd_line), RELOC("crashkernel=")); - if (opt) { - opt += 12; - RELOC(prom_crashk_size) = - prom_memparse(opt, (const char **)&opt); - - if (ALIGN(RELOC(prom_crashk_size), 0x1000000) != - RELOC(prom_crashk_size)) { - prom_printf("Warning: crashkernel size is not " - "aligned to 16MB\n"); - } - - /* - * At present, the crash kernel always run at 32MB. - * Just ignore whatever user passed. - */ - RELOC(prom_crashk_base) = 0x2000000; - if (*opt == '@') { - prom_printf("Warning: PPC64 kdump kernel always runs " - "at 32 MB\n"); - } - } -#endif } #ifdef CONFIG_PPC_PSERIES @@ -1115,29 +1069,6 @@ static void __init prom_init_mem(void) } /* - * If prom_memory_limit is set we reduce the upper limits *except* for - * alloc_top_high. This must be the real top of RAM so we can put - * TCE's up there. - */ - - RELOC(alloc_top_high) = RELOC(ram_top); - - if (RELOC(prom_memory_limit)) { - if (RELOC(prom_memory_limit) <= RELOC(alloc_bottom)) { - prom_printf("Ignoring mem=%x <= alloc_bottom.\n", - RELOC(prom_memory_limit)); - RELOC(prom_memory_limit) = 0; - } else if (RELOC(prom_memory_limit) >= RELOC(ram_top)) { - prom_printf("Ignoring mem=%x >= ram_top.\n", - RELOC(prom_memory_limit)); - RELOC(prom_memory_limit) = 0; - } else { - RELOC(ram_top) = RELOC(prom_memory_limit); - RELOC(rmo_top) = min(RELOC(rmo_top), RELOC(prom_memory_limit)); - } - } - - /* * Setup our top alloc point, that is top of RMO or top of * segment 0 when running non-LPAR. * Some RS64 machines have buggy firmware where claims up at @@ -1149,20 +1080,14 @@ static void __init prom_init_mem(void) RELOC(rmo_top) = RELOC(ram_top); RELOC(rmo_top) = min(0x30000000ul, RELOC(rmo_top)); RELOC(alloc_top) = RELOC(rmo_top); + RELOC(alloc_top_high) = RELOC(ram_top); prom_printf("memory layout at init:\n"); - prom_printf(" memory_limit : %x (16 MB aligned)\n", RELOC(prom_memory_limit)); prom_printf(" alloc_bottom : %x\n", RELOC(alloc_bottom)); prom_printf(" alloc_top : %x\n", RELOC(alloc_top)); prom_printf(" alloc_top_hi : %x\n", RELOC(alloc_top_high)); prom_printf(" rmo_top : %x\n", RELOC(rmo_top)); prom_printf(" ram_top : %x\n", RELOC(ram_top)); -#ifdef CONFIG_KEXEC - if (RELOC(prom_crashk_base)) { - prom_printf(" crashk_base : %x\n", RELOC(prom_crashk_base)); - prom_printf(" crashk_size : %x\n", RELOC(prom_crashk_size)); - } -#endif } @@ -1348,16 +1273,10 @@ static void __init prom_initialize_tce_table(void) reserve_mem(local_alloc_bottom, local_alloc_top - local_alloc_bottom); - if (RELOC(prom_memory_limit)) { - /* - * We align the start to a 16MB boundary so we can map - * the TCE area using large pages if possible. - * The end should be the top of RAM so no need to align it. - */ - RELOC(prom_tce_alloc_start) = _ALIGN_DOWN(local_alloc_bottom, - 0x1000000); - RELOC(prom_tce_alloc_end) = local_alloc_top; - } + /* These are only really needed if there is a memory limit in + * effect, but we don't know so export them always. */ + RELOC(prom_tce_alloc_start) = local_alloc_bottom; + RELOC(prom_tce_alloc_end) = local_alloc_top; /* Flag the first invalid entry */ prom_debug("ending prom_initialize_tce_table\n"); @@ -2031,11 +1950,7 @@ static void __init flatten_device_tree(void) /* Version 16 is not backward compatible */ hdr->last_comp_version = 0x10; - /* Reserve the whole thing and copy the reserve map in, we - * also bump mem_reserve_cnt to cause further reservations to - * fail since it's too late. - */ - reserve_mem(RELOC(dt_header_start), hdr->totalsize); + /* Copy the reserve map in */ memcpy(rsvmap, RELOC(mem_reserve_map), sizeof(mem_reserve_map)); #ifdef DEBUG_PROM @@ -2048,6 +1963,9 @@ static void __init flatten_device_tree(void) RELOC(mem_reserve_map)[i].size); } #endif + /* Bump mem_reserve_cnt to cause further reservations to fail + * since it's too late. + */ RELOC(mem_reserve_cnt) = MEM_RESERVE_MAP_SIZE; prom_printf("Device tree strings 0x%x -> 0x%x\n", @@ -2270,10 +2188,6 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, */ prom_init_mem(); -#ifdef CONFIG_KEXEC - if (RELOC(prom_crashk_base)) - reserve_mem(RELOC(prom_crashk_base), RELOC(prom_crashk_size)); -#endif /* * Determine which cpu is actually running right _now_ */ @@ -2307,10 +2221,6 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, /* * Fill in some infos for use by the kernel later on */ - if (RELOC(prom_memory_limit)) - prom_setprop(_prom->chosen, "/chosen", "linux,memory-limit", - &RELOC(prom_memory_limit), - sizeof(prom_memory_limit)); #ifdef CONFIG_PPC64 if (RELOC(ppc64_iommu_off)) prom_setprop(_prom->chosen, "/chosen", "linux,iommu-off", @@ -2330,16 +2240,6 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4, } #endif -#ifdef CONFIG_KEXEC - if (RELOC(prom_crashk_base)) { - prom_setprop(_prom->chosen, "/chosen", "linux,crashkernel-base", - PTRRELOC(&prom_crashk_base), - sizeof(RELOC(prom_crashk_base))); - prom_setprop(_prom->chosen, "/chosen", "linux,crashkernel-size", - PTRRELOC(&prom_crashk_size), - sizeof(RELOC(prom_crashk_size))); - } -#endif /* * Fixup any known bugs in the device-tree */ diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c index 3934c227549b..23bb060330ef 100644 --- a/arch/powerpc/kernel/prom_parse.c +++ b/arch/powerpc/kernel/prom_parse.c @@ -548,3 +548,25 @@ int of_pci_address_to_resource(struct device_node *dev, int bar, return __of_address_to_resource(dev, addrp, size, flags, r); } EXPORT_SYMBOL_GPL(of_pci_address_to_resource); + +void of_parse_dma_window(struct device_node *dn, unsigned char *dma_window_prop, + unsigned long *busno, unsigned long *phys, unsigned long *size) +{ + u32 *dma_window, cells; + unsigned char *prop; + + dma_window = (u32 *)dma_window_prop; + + /* busno is always one cell */ + *busno = *(dma_window++); + + prop = get_property(dn, "ibm,#dma-address-cells", NULL); + cells = prop ? *(u32 *)prop : prom_n_addr_cells(dn); + *phys = of_read_addr(dma_window, cells); + + dma_window += cells; + + prop = get_property(dn, "ibm,#dma-size-cells", NULL); + cells = prop ? *(u32 *)prop : prom_n_size_cells(dn); + *size = of_read_addr(dma_window, cells); +} diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 684ab1d49c65..bd328123af75 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -443,6 +443,7 @@ void __init smp_setup_cpu_maps(void) } #endif /* CONFIG_SMP */ +int __initdata do_early_xmon; #ifdef CONFIG_XMON static int __init early_xmon(char *p) { @@ -456,7 +457,7 @@ static int __init early_xmon(char *p) return 0; } xmon_init(1); - debugger(NULL); + do_early_xmon = 1; return 0; } @@ -524,3 +525,20 @@ int check_legacy_ioport(unsigned long base_port) return ppc_md.check_legacy_ioport(base_port); } EXPORT_SYMBOL(check_legacy_ioport); + +static int ppc_panic_event(struct notifier_block *this, + unsigned long event, void *ptr) +{ + ppc_md.panic(ptr); /* May not return */ + return NOTIFY_DONE; +} + +static struct notifier_block ppc_panic_block = { + .notifier_call = ppc_panic_event, + .priority = INT_MIN /* may not return; must be done last */ +}; + +void __init setup_panic(void) +{ + atomic_notifier_chain_register(&panic_notifier_list, &ppc_panic_block); +} diff --git a/arch/powerpc/kernel/setup.h b/arch/powerpc/kernel/setup.h index 2ebba755272e..4c67ad7fae08 100644 --- a/arch/powerpc/kernel/setup.h +++ b/arch/powerpc/kernel/setup.h @@ -2,5 +2,8 @@ #define _POWERPC_KERNEL_SETUP_H void check_for_initrd(void); +void do_init_bootmem(void); +void setup_panic(void); +extern int do_early_xmon; #endif /* _POWERPC_KERNEL_SETUP_H */ diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 69ac25701344..e5a44812441a 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -131,12 +131,6 @@ void __init machine_init(unsigned long dt_ptr, unsigned long phys) /* Do some early initialization based on the flat device tree */ early_init_devtree(__va(dt_ptr)); - /* Check default command line */ -#ifdef CONFIG_CMDLINE - if (cmd_line[0] == 0) - strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line)); -#endif /* CONFIG_CMDLINE */ - probe_machine(); #ifdef CONFIG_6xx @@ -235,7 +229,7 @@ arch_initcall(ppc_init); /* Warning, IO base is not yet inited */ void __init setup_arch(char **cmdline_p) { - extern void do_init_bootmem(void); + *cmdline_p = cmd_line; /* so udelay does something sensible, assume <= 1000 bogomips */ loops_per_jiffy = 500000000 / HZ; @@ -285,16 +279,16 @@ void __init setup_arch(char **cmdline_p) /* reboot on panic */ panic_timeout = 180; + if (ppc_md.panic) + setup_panic(); + init_mm.start_code = PAGE_OFFSET; init_mm.end_code = (unsigned long) _etext; init_mm.end_data = (unsigned long) _edata; init_mm.brk = klimit; - /* Save unparsed command line copy for /proc/cmdline */ - strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE); - *cmdline_p = cmd_line; - - parse_early_param(); + if (do_early_xmon) + debugger(NULL); /* set up the bootmem stuff with available memory */ do_init_bootmem(); diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 4467c49903b6..78f3a5fd43f6 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -100,12 +100,6 @@ unsigned long SYSRQ_KEY; #endif /* CONFIG_MAGIC_SYSRQ */ -static int ppc64_panic_event(struct notifier_block *, unsigned long, void *); -static struct notifier_block ppc64_panic_block = { - .notifier_call = ppc64_panic_event, - .priority = INT_MIN /* may not return; must be done last */ -}; - #ifdef CONFIG_SMP static int smt_enabled_cmdline; @@ -199,9 +193,7 @@ void __init early_setup(unsigned long dt_ptr) /* Probe the machine type */ probe_machine(); -#ifdef CONFIG_CRASH_DUMP - kdump_setup(); -#endif + setup_kdump_trampoline(); DBG("Found, Initializing memory management...\n"); @@ -353,9 +345,6 @@ void __init setup_system(void) { DBG(" -> setup_system()\n"); -#ifdef CONFIG_KEXEC - kdump_move_device_tree(); -#endif /* * Unflatten the device-tree passed by prom_init or kexec */ @@ -420,10 +409,8 @@ void __init setup_system(void) */ register_early_udbg_console(); - /* Save unparsed command line copy for /proc/cmdline */ - strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE); - - parse_early_param(); + if (do_early_xmon) + debugger(NULL); check_smt_enabled(); smp_setup_cpu_maps(); @@ -456,13 +443,6 @@ void __init setup_system(void) DBG(" <- setup_system()\n"); } -static int ppc64_panic_event(struct notifier_block *this, - unsigned long event, void *ptr) -{ - ppc_md.panic((char *)ptr); /* May not return */ - return NOTIFY_DONE; -} - #ifdef CONFIG_IRQSTACKS static void __init irqstack_early_init(void) { @@ -517,8 +497,6 @@ static void __init emergency_stack_init(void) */ void __init setup_arch(char **cmdline_p) { - extern void do_init_bootmem(void); - ppc64_boot_msg(0x12, "Setup Arch"); *cmdline_p = cmd_line; @@ -535,8 +513,7 @@ void __init setup_arch(char **cmdline_p) panic_timeout = 180; if (ppc_md.panic) - atomic_notifier_chain_register(&panic_notifier_list, - &ppc64_panic_block); + setup_panic(); init_mm.start_code = PAGE_OFFSET; init_mm.end_code = (unsigned long) _etext; diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c index 24e3ad756de0..528e7f84cb67 100644 --- a/arch/powerpc/kernel/time.c +++ b/arch/powerpc/kernel/time.c @@ -76,7 +76,6 @@ /* keep track of when we need to update the rtc */ time_t last_rtc_update; -extern int piranha_simulator; #ifdef CONFIG_PPC_ISERIES unsigned long iSeries_recal_titan = 0; unsigned long iSeries_recal_tb = 0; @@ -945,9 +944,9 @@ void __init time_init(void) } else { /* Normal PowerPC with timebase register */ ppc_md.calibrate_decr(); - printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n", + printk(KERN_DEBUG "time_init: decrementer frequency = %lu.%.6lu MHz\n", ppc_tb_freq / 1000000, ppc_tb_freq % 1000000); - printk(KERN_INFO "time_init: processor frequency = %lu.%.6lu MHz\n", + printk(KERN_DEBUG "time_init: processor frequency = %lu.%.6lu MHz\n", ppc_proc_freq / 1000000, ppc_proc_freq % 1000000); tb_last_stamp = tb_last_jiffy = get_tb(); } @@ -1010,10 +1009,7 @@ void __init time_init(void) tb_to_ns_scale = scale; tb_to_ns_shift = shift; -#ifdef CONFIG_PPC_ISERIES - if (!piranha_simulator) -#endif - tm = get_boot_time(); + tm = get_boot_time(); write_seqlock_irqsave(&xtime_lock, flags); diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index 971020cf3f7d..fe92727aca30 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -13,27 +13,116 @@ * 2 of the License, or (at your option) any later version. */ +#include <linux/types.h> +#include <linux/device.h> #include <linux/init.h> #include <linux/console.h> #include <linux/module.h> #include <linux/mm.h> #include <linux/dma-mapping.h> +#include <linux/kobject.h> + #include <asm/iommu.h> #include <asm/dma.h> #include <asm/vio.h> #include <asm/prom.h> - -static const struct vio_device_id *vio_match_device( - const struct vio_device_id *, const struct vio_dev *); - -struct vio_dev vio_bus_device = { /* fake "parent" device */ +#include <asm/firmware.h> +#include <asm/tce.h> +#include <asm/abs_addr.h> +#include <asm/page.h> +#include <asm/hvcall.h> +#include <asm/iseries/vio.h> +#include <asm/iseries/hv_types.h> +#include <asm/iseries/hv_lp_config.h> +#include <asm/iseries/hv_call_xm.h> +#include <asm/iseries/iommu.h> + +extern struct subsystem devices_subsys; /* needed for vio_find_name() */ + +static struct vio_dev vio_bus_device = { /* fake "parent" device */ .name = vio_bus_device.dev.bus_id, .type = "", .dev.bus_id = "vio", .dev.bus = &vio_bus_type, }; -static struct vio_bus_ops vio_bus_ops; +#ifdef CONFIG_PPC_ISERIES +struct device *iSeries_vio_dev = &vio_bus_device.dev; +EXPORT_SYMBOL(iSeries_vio_dev); + +static struct iommu_table veth_iommu_table; +static struct iommu_table vio_iommu_table; + +static void __init iommu_vio_init(void) +{ + iommu_table_getparms_iSeries(255, 0, 0xff, &veth_iommu_table); + veth_iommu_table.it_size /= 2; + vio_iommu_table = veth_iommu_table; + vio_iommu_table.it_offset += veth_iommu_table.it_size; + + if (!iommu_init_table(&veth_iommu_table)) + printk("Virtual Bus VETH TCE table failed.\n"); + if (!iommu_init_table(&vio_iommu_table)) + printk("Virtual Bus VIO TCE table failed.\n"); +} +#endif + +static struct iommu_table *vio_build_iommu_table(struct vio_dev *dev) +{ +#ifdef CONFIG_PPC_ISERIES + if (firmware_has_feature(FW_FEATURE_ISERIES)) { + if (strcmp(dev->type, "network") == 0) + return &veth_iommu_table; + return &vio_iommu_table; + } else +#endif + { + unsigned char *dma_window; + struct iommu_table *tbl; + unsigned long offset, size; + + dma_window = get_property(dev->dev.platform_data, + "ibm,my-dma-window", NULL); + if (!dma_window) + return NULL; + + tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); + + of_parse_dma_window(dev->dev.platform_data, dma_window, + &tbl->it_index, &offset, &size); + + /* TCE table size - measured in tce entries */ + tbl->it_size = size >> PAGE_SHIFT; + /* offset for VIO should always be 0 */ + tbl->it_offset = offset >> PAGE_SHIFT; + tbl->it_busno = 0; + tbl->it_type = TCE_VB; + + return iommu_init_table(tbl); + } +} + +/** + * vio_match_device: - Tell if a VIO device has a matching + * VIO device id structure. + * @ids: array of VIO device id structures to search in + * @dev: the VIO device structure to match against + * + * Used by a driver to check whether a VIO device present in the + * system is in its list of supported devices. Returns the matching + * vio_device_id structure or NULL if there is no match. + */ +static const struct vio_device_id *vio_match_device( + const struct vio_device_id *ids, const struct vio_dev *dev) +{ + while (ids->type[0] != '\0') { + if ((strncmp(dev->type, ids->type, strlen(ids->type)) == 0) && + device_is_compatible(dev->dev.platform_data, ids->compat)) + return ids; + ids++; + } + return NULL; +} /* * Convert from struct device to struct vio_dev and pass to driver. @@ -106,35 +195,110 @@ void vio_unregister_driver(struct vio_driver *viodrv) } EXPORT_SYMBOL(vio_unregister_driver); +/* vio_dev refcount hit 0 */ +static void __devinit vio_dev_release(struct device *dev) +{ + if (dev->platform_data) { + /* XXX free TCE table */ + of_node_put(dev->platform_data); + } + kfree(to_vio_dev(dev)); +} + /** - * vio_match_device: - Tell if a VIO device has a matching - * VIO device id structure. - * @ids: array of VIO device id structures to search in - * @dev: the VIO device structure to match against + * vio_register_device_node: - Register a new vio device. + * @of_node: The OF node for this device. * - * Used by a driver to check whether a VIO device present in the - * system is in its list of supported devices. Returns the matching - * vio_device_id structure or NULL if there is no match. + * Creates and initializes a vio_dev structure from the data in + * of_node (dev.platform_data) and adds it to the list of virtual devices. + * Returns a pointer to the created vio_dev or NULL if node has + * NULL device_type or compatible fields. */ -static const struct vio_device_id *vio_match_device( - const struct vio_device_id *ids, const struct vio_dev *dev) +struct vio_dev * __devinit vio_register_device_node(struct device_node *of_node) { - while (ids->type[0] != '\0') { - if (vio_bus_ops.match(ids, dev)) - return ids; - ids++; + struct vio_dev *viodev; + unsigned int *unit_address; + unsigned int *irq_p; + + /* we need the 'device_type' property, in order to match with drivers */ + if (of_node->type == NULL) { + printk(KERN_WARNING "%s: node %s missing 'device_type'\n", + __FUNCTION__, + of_node->name ? of_node->name : "<unknown>"); + return NULL; } - return NULL; + + unit_address = (unsigned int *)get_property(of_node, "reg", NULL); + if (unit_address == NULL) { + printk(KERN_WARNING "%s: node %s missing 'reg'\n", + __FUNCTION__, + of_node->name ? of_node->name : "<unknown>"); + return NULL; + } + + /* allocate a vio_dev for this node */ + viodev = kzalloc(sizeof(struct vio_dev), GFP_KERNEL); + if (viodev == NULL) + return NULL; + + viodev->dev.platform_data = of_node_get(of_node); + + viodev->irq = NO_IRQ; + irq_p = (unsigned int *)get_property(of_node, "interrupts", NULL); + if (irq_p) { + int virq = virt_irq_create_mapping(*irq_p); + if (virq == NO_IRQ) { + printk(KERN_ERR "Unable to allocate interrupt " + "number for %s\n", of_node->full_name); + } else + viodev->irq = irq_offset_up(virq); + } + + snprintf(viodev->dev.bus_id, BUS_ID_SIZE, "%x", *unit_address); + viodev->name = of_node->name; + viodev->type = of_node->type; + viodev->unit_address = *unit_address; + if (firmware_has_feature(FW_FEATURE_ISERIES)) { + unit_address = (unsigned int *)get_property(of_node, + "linux,unit_address", NULL); + if (unit_address != NULL) + viodev->unit_address = *unit_address; + } + viodev->iommu_table = vio_build_iommu_table(viodev); + + /* init generic 'struct device' fields: */ + viodev->dev.parent = &vio_bus_device.dev; + viodev->dev.bus = &vio_bus_type; + viodev->dev.release = vio_dev_release; + + /* register with generic device framework */ + if (device_register(&viodev->dev)) { + printk(KERN_ERR "%s: failed to register device %s\n", + __FUNCTION__, viodev->dev.bus_id); + /* XXX free TCE table */ + kfree(viodev); + return NULL; + } + + return viodev; } +EXPORT_SYMBOL(vio_register_device_node); /** * vio_bus_init: - Initialize the virtual IO bus */ -int __init vio_bus_init(struct vio_bus_ops *ops) +static int __init vio_bus_init(void) { int err; + struct device_node *node_vroot; - vio_bus_ops = *ops; +#ifdef CONFIG_PPC_ISERIES + if (firmware_has_feature(FW_FEATURE_ISERIES)) { + iommu_vio_init(); + vio_bus_device.iommu_table = &vio_iommu_table; + iSeries_vio_dev = &vio_bus_device.dev; + } +#endif err = bus_register(&vio_bus_type); if (err) { @@ -153,47 +317,48 @@ int __init vio_bus_init(struct vio_bus_ops *ops) return err; } - return 0; -} + node_vroot = find_devices("vdevice"); + if (node_vroot) { + struct device_node *of_node; + + /* + * Create struct vio_devices for each virtual device in + * the device tree. Drivers will associate with them later. + */ + for (of_node = node_vroot->child; of_node != NULL; + of_node = of_node->sibling) { + printk(KERN_DEBUG "%s: processing %p\n", + __FUNCTION__, of_node); + vio_register_device_node(of_node); + } + } -/* vio_dev refcount hit 0 */ -static void __devinit vio_dev_release(struct device *dev) -{ - if (vio_bus_ops.release_device) - vio_bus_ops.release_device(dev); - kfree(to_vio_dev(dev)); + return 0; } +__initcall(vio_bus_init); -static ssize_t viodev_show_name(struct device *dev, +static ssize_t name_show(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "%s\n", to_vio_dev(dev)->name); } -DEVICE_ATTR(name, S_IRUSR | S_IRGRP | S_IROTH, viodev_show_name, NULL); -struct vio_dev * __devinit vio_register_device(struct vio_dev *viodev) +static ssize_t devspec_show(struct device *dev, + struct device_attribute *attr, char *buf) { - /* init generic 'struct device' fields: */ - viodev->dev.parent = &vio_bus_device.dev; - viodev->dev.bus = &vio_bus_type; - viodev->dev.release = vio_dev_release; - - /* register with generic device framework */ - if (device_register(&viodev->dev)) { - printk(KERN_ERR "%s: failed to register device %s\n", - __FUNCTION__, viodev->dev.bus_id); - return NULL; - } - device_create_file(&viodev->dev, &dev_attr_name); + struct device_node *of_node = dev->platform_data; - return viodev; + return sprintf(buf, "%s\n", of_node ? of_node->full_name : "none"); } +static struct device_attribute vio_dev_attrs[] = { + __ATTR_RO(name), + __ATTR_RO(devspec), + __ATTR_NULL +}; + void __devinit vio_unregister_device(struct vio_dev *viodev) { - if (vio_bus_ops.unregister_device) - vio_bus_ops.unregister_device(viodev); - device_remove_file(&viodev->dev, &dev_attr_name); device_unregister(&viodev->dev); } EXPORT_SYMBOL(vio_unregister_device); @@ -267,22 +432,23 @@ static int vio_hotplug(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size) { const struct vio_dev *vio_dev = to_vio_dev(dev); + struct device_node *dn = dev->platform_data; char *cp; int length; if (!num_envp) return -ENOMEM; - if (!vio_dev->dev.platform_data) + if (!dn) return -ENODEV; - cp = (char *)get_property(vio_dev->dev.platform_data, "compatible", &length); + cp = (char *)get_property(dn, "compatible", &length); if (!cp) return -ENODEV; envp[0] = buffer; length = scnprintf(buffer, buffer_size, "MODALIAS=vio:T%sS%s", vio_dev->type, cp); - if (buffer_size - length <= 0) + if ((buffer_size - length) <= 0) return -ENOMEM; envp[1] = NULL; return 0; @@ -290,9 +456,81 @@ static int vio_hotplug(struct device *dev, char **envp, int num_envp, struct bus_type vio_bus_type = { .name = "vio", + .dev_attrs = vio_dev_attrs, .uevent = vio_hotplug, .match = vio_bus_match, .probe = vio_bus_probe, .remove = vio_bus_remove, .shutdown = vio_bus_shutdown, }; + +/** + * vio_get_attribute: - get attribute for virtual device + * @vdev: The vio device to get property. + * @which: The property/attribute to be extracted. + * @length: Pointer to length of returned data size (unused if NULL). + * + * Calls prom.c's get_property() to return the value of the + * attribute specified by @which +*/ +const void *vio_get_attribute(struct vio_dev *vdev, char *which, int *length) +{ + return get_property(vdev->dev.platform_data, which, length); +} +EXPORT_SYMBOL(vio_get_attribute); + +#ifdef CONFIG_PPC_PSERIES +/* vio_find_name() - internal because only vio.c knows how we formatted the + * kobject name + * XXX once vio_bus_type.devices is actually used as a kset in + * drivers/base/bus.c, this function should be removed in favor of + * "device_find(kobj_name, &vio_bus_type)" + */ +static struct vio_dev *vio_find_name(const char *kobj_name) +{ + struct kobject *found; + + found = kset_find_obj(&devices_subsys.kset, kobj_name); + if (!found) + return NULL; + + return to_vio_dev(container_of(found, struct device, kobj)); +} + +/** + * vio_find_node - find an already-registered vio_dev + * @vnode: device_node of the virtual device we're looking for + */ +struct vio_dev *vio_find_node(struct device_node *vnode) +{ + uint32_t *unit_address; + char kobj_name[BUS_ID_SIZE]; + + /* construct the kobject name from the device node */ + unit_address = (uint32_t *)get_property(vnode, "reg", NULL); + if (!unit_address) + return NULL; + snprintf(kobj_name, BUS_ID_SIZE, "%x", *unit_address); + + return vio_find_name(kobj_name); +} +EXPORT_SYMBOL(vio_find_node); + +int vio_enable_interrupts(struct vio_dev *dev) +{ + int rc = h_vio_signal(dev->unit_address, VIO_IRQ_ENABLE); + if (rc != H_SUCCESS) + printk(KERN_ERR "vio: Error 0x%x enabling interrupts\n", rc); + return rc; +} +EXPORT_SYMBOL(vio_enable_interrupts); + +int vio_disable_interrupts(struct vio_dev *dev) +{ + int rc = h_vio_signal(dev->unit_address, VIO_IRQ_DISABLE); + if (rc != H_SUCCESS) + printk(KERN_ERR "vio: Error 0x%x disabling interrupts\n", rc); + return rc; +} +EXPORT_SYMBOL(vio_disable_interrupts); +#endif /* CONFIG_PPC_PSERIES */ diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S index fe79c2584cb0..8b25953dc4f0 100644 --- a/arch/powerpc/kernel/vmlinux.lds.S +++ b/arch/powerpc/kernel/vmlinux.lds.S @@ -93,6 +93,11 @@ SECTIONS __ptov_table_begin = .; *(.ptov_fixup); __ptov_table_end = .; +#ifdef CONFIG_PPC_ISERIES + __dt_strings_start = .; + *(.dt_strings); + __dt_strings_end = .; +#endif } . = ALIGN(16); |