diff options
| -rw-r--r-- | arch/powerpc/platforms/cell/Kconfig | 3 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/setup.c | 78 | ||||
| -rw-r--r-- | arch/powerpc/platforms/cell/spu_base.c | 72 | ||||
| -rw-r--r-- | mm/memory_hotplug.c | 6 |
4 files changed, 70 insertions, 89 deletions
diff --git a/arch/powerpc/platforms/cell/Kconfig b/arch/powerpc/platforms/cell/Kconfig index c2a3db8..6a02d51 100644 --- a/arch/powerpc/platforms/cell/Kconfig +++ b/arch/powerpc/platforms/cell/Kconfig @@ -12,7 +12,8 @@ config SPU_FS config SPUFS_MMAP bool - depends on SPU_FS && SPARSEMEM && !PPC_64K_PAGES + depends on SPU_FS && SPARSEMEM + select MEMORY_HOTPLUG default y endmenu diff --git a/arch/powerpc/platforms/cell/setup.c b/arch/powerpc/platforms/cell/setup.c index dac5d03..6574b22 100644 --- a/arch/powerpc/platforms/cell/setup.c +++ b/arch/powerpc/platforms/cell/setup.c @@ -29,6 +29,8 @@ #include <linux/seq_file.h> #include <linux/root_dev.h> #include <linux/console.h> +#include <linux/mutex.h> +#include <linux/memory_hotplug.h> #include <asm/mmu.h> #include <asm/processor.h> @@ -46,6 +48,7 @@ #include <asm/cputable.h> #include <asm/ppc-pci.h> #include <asm/irq.h> +#include <asm/spu.h> #include "interrupt.h" #include "iommu.h" @@ -69,77 +72,6 @@ static void cell_show_cpuinfo(struct seq_file *m) of_node_put(root); } -#ifdef CONFIG_SPARSEMEM -static int __init find_spu_node_id(struct device_node *spe) -{ - unsigned int *id; -#ifdef CONFIG_NUMA - struct device_node *cpu; - cpu = spe->parent->parent; - id = (unsigned int *)get_property(cpu, "node-id", NULL); -#else - id = NULL; -#endif - return id ? *id : 0; -} - -static void __init cell_spuprop_present(struct device_node *spe, - const char *prop, int early) -{ - struct address_prop { - unsigned long address; - unsigned int len; - } __attribute__((packed)) *p; - int proplen; - - unsigned long start_pfn, end_pfn, pfn; - int node_id; - - p = (void*)get_property(spe, prop, &proplen); - WARN_ON(proplen != sizeof (*p)); - - node_id = find_spu_node_id(spe); - - start_pfn = p->address >> PAGE_SHIFT; - end_pfn = (p->address + p->len + PAGE_SIZE - 1) >> PAGE_SHIFT; - - /* We need to call memory_present *before* the call to sparse_init, - but we can initialize the page structs only *after* that call. - Thus, we're being called twice. */ - if (early) - memory_present(node_id, start_pfn, end_pfn); - else { - /* As the pages backing SPU LS and I/O are outside the range - of regular memory, their page structs were not initialized - by free_area_init. Do it here instead. */ - for (pfn = start_pfn; pfn < end_pfn; pfn++) { - struct page *page = pfn_to_page(pfn); - set_page_links(page, ZONE_DMA, node_id, pfn); - init_page_count(page); - reset_page_mapcount(page); - SetPageReserved(page); - INIT_LIST_HEAD(&page->lru); - } - } -} - -static void __init cell_spumem_init(int early) -{ - struct device_node *node; - for (node = of_find_node_by_type(NULL, "spe"); - node; node = of_find_node_by_type(node, "spe")) { - cell_spuprop_present(node, "local-store", early); - cell_spuprop_present(node, "problem", early); - cell_spuprop_present(node, "priv1", early); - cell_spuprop_present(node, "priv2", early); - } -} -#else -static void __init cell_spumem_init(int early) -{ -} -#endif - static void cell_progress(char *s, unsigned short hex) { printk("*** %04x : %s\n", hex, s ? s : ""); @@ -172,8 +104,6 @@ static void __init cell_setup_arch(void) #endif mmio_nvram_init(); - - cell_spumem_init(0); } /* @@ -189,8 +119,6 @@ static void __init cell_init_early(void) ppc64_interrupt_controller = IC_CELL_PIC; - cell_spumem_init(1); - DBG(" <- cell_init_early()\n"); } diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c index ef47a62..b788e16 100644 --- a/arch/powerpc/platforms/cell/spu_base.c +++ b/arch/powerpc/platforms/cell/spu_base.c @@ -520,6 +520,56 @@ void spu_irq_setaffinity(struct spu *spu, int cpu) } EXPORT_SYMBOL_GPL(spu_irq_setaffinity); +static int __init find_spu_node_id(struct device_node *spe) +{ + unsigned int *id; + struct device_node *cpu; + cpu = spe->parent->parent; + id = (unsigned int *)get_property(cpu, "node-id", NULL); + return id ? *id : 0; +} + +static int __init cell_spuprop_present(struct device_node *spe, + const char *prop) +{ + static DEFINE_MUTEX(add_spumem_mutex); + + struct address_prop { + unsigned long address; + unsigned int len; + } __attribute__((packed)) *p; + int proplen; + + unsigned long start_pfn, nr_pages; + int node_id; + struct pglist_data *pgdata; + struct zone *zone; + int ret; + + p = (void*)get_property(spe, prop, &proplen); + WARN_ON(proplen != sizeof (*p)); + + start_pfn = p->address >> PAGE_SHIFT; + nr_pages = ((unsigned long)p->len + PAGE_SIZE - 1) >> PAGE_SHIFT; + + /* + * XXX need to get the correct NUMA node in here. This may + * be different from the spe::node_id property, e.g. when + * the host firmware is not NUMA aware. + */ + node_id = 0; + + pgdata = NODE_DATA(node_id); + zone = pgdata->node_zones; + + /* XXX rethink locking here */ + mutex_lock(&add_spumem_mutex); + ret = __add_pages(zone, start_pfn, nr_pages); + mutex_unlock(&add_spumem_mutex); + + return ret; +} + static void __iomem * __init map_spe_prop(struct device_node *n, const char *name) { @@ -530,6 +580,8 @@ static void __iomem * __init map_spe_prop(struct device_node *n, void *p; int proplen; + void* ret = NULL; + int err = 0; p = get_property(n, name, &proplen); if (proplen != sizeof (struct address_prop)) @@ -537,7 +589,14 @@ static void __iomem * __init map_spe_prop(struct device_node *n, prop = p; - return ioremap(prop->address, prop->len); + err = cell_spuprop_present(n, name); + if (err && (err != -EEXIST)) + goto out; + + ret = ioremap(prop->address, prop->len); + + out: + return ret; } static void spu_unmap(struct spu *spu) @@ -597,17 +656,6 @@ out: return ret; } -static int __init find_spu_node_id(struct device_node *spe) -{ - unsigned int *id; - struct device_node *cpu; - - cpu = spe->parent->parent; - id = (unsigned int *)get_property(cpu, "node-id", NULL); - - return id ? *id : 0; -} - static int __init create_spu(struct device_node *spe) { struct spu *spu; diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 1fe76d9..1ae2b2c 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -69,12 +69,16 @@ int __add_pages(struct zone *zone, unsigned long phys_start_pfn, for (i = 0; i < nr_pages; i += PAGES_PER_SECTION) { err = __add_section(zone, phys_start_pfn + i); - if (err) + /* We want to keep adding the rest of the + * sections if the first ones already exist + */ + if (err && (err != -EEXIST)) break; } return err; } +EXPORT_SYMBOL_GPL(__add_pages); static void grow_zone_span(struct zone *zone, unsigned long start_pfn, unsigned long end_pfn) |