diff options
Diffstat (limited to 'arch/powerpc/platforms/cell/spu_base.c')
| -rw-r--r-- | arch/powerpc/platforms/cell/spu_base.c | 168 |
1 files changed, 131 insertions, 37 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c index f78680346e5..ac5f12662db 100644 --- a/arch/powerpc/platforms/cell/spu_base.c +++ b/arch/powerpc/platforms/cell/spu_base.c @@ -25,11 +25,13 @@ #include <linux/interrupt.h> #include <linux/list.h> #include <linux/module.h> +#include <linux/pci.h> #include <linux/poll.h> #include <linux/ptrace.h> #include <linux/slab.h> #include <linux/wait.h> +#include <asm/firmware.h> #include <asm/io.h> #include <asm/prom.h> #include <linux/mutex.h> @@ -46,21 +48,21 @@ EXPORT_SYMBOL_GPL(spu_priv1_ops); static int __spu_trap_invalid_dma(struct spu *spu) { pr_debug("%s\n", __FUNCTION__); - force_sig(SIGBUS, /* info, */ current); + spu->dma_callback(spu, SPE_EVENT_INVALID_DMA); return 0; } static int __spu_trap_dma_align(struct spu *spu) { pr_debug("%s\n", __FUNCTION__); - force_sig(SIGBUS, /* info, */ current); + spu->dma_callback(spu, SPE_EVENT_DMA_ALIGNMENT); return 0; } static int __spu_trap_error(struct spu *spu) { pr_debug("%s\n", __FUNCTION__); - force_sig(SIGILL, /* info, */ current); + spu->dma_callback(spu, SPE_EVENT_SPE_ERROR); return 0; } @@ -317,7 +319,7 @@ static void spu_free_irqs(struct spu *spu) free_irq(spu->irqs[2], spu); } -static LIST_HEAD(spu_list); +static struct list_head spu_list[MAX_NUMNODES]; static DEFINE_MUTEX(spu_mutex); static void spu_init_channels(struct spu *spu) @@ -354,32 +356,42 @@ static void spu_init_channels(struct spu *spu) } } -struct spu *spu_alloc(void) +struct spu *spu_alloc_node(int node) { - struct spu *spu; + struct spu *spu = NULL; mutex_lock(&spu_mutex); - if (!list_empty(&spu_list)) { - spu = list_entry(spu_list.next, struct spu, list); + if (!list_empty(&spu_list[node])) { + spu = list_entry(spu_list[node].next, struct spu, list); list_del_init(&spu->list); - pr_debug("Got SPU %x %d\n", spu->isrc, spu->number); - } else { - pr_debug("No SPU left\n"); - spu = NULL; + pr_debug("Got SPU %x %d %d\n", + spu->isrc, spu->number, spu->node); + spu_init_channels(spu); } mutex_unlock(&spu_mutex); - if (spu) - spu_init_channels(spu); + return spu; +} +EXPORT_SYMBOL_GPL(spu_alloc_node); + +struct spu *spu_alloc(void) +{ + struct spu *spu = NULL; + int node; + + for (node = 0; node < MAX_NUMNODES; node++) { + spu = spu_alloc_node(node); + if (spu) + break; + } return spu; } -EXPORT_SYMBOL_GPL(spu_alloc); void spu_free(struct spu *spu) { mutex_lock(&spu_mutex); - list_add_tail(&spu->list, &spu_list); + list_add_tail(&spu->list, &spu_list[spu->node]); mutex_unlock(&spu_mutex); } EXPORT_SYMBOL_GPL(spu_free); @@ -566,7 +578,7 @@ static void spu_unmap(struct spu *spu) } /* This function shall be abstracted for HV platforms */ -static int __init spu_map_interrupts(struct spu *spu, struct device_node *np) +static int __init spu_map_interrupts_old(struct spu *spu, struct device_node *np) { unsigned int isrc; const u32 *tmp; @@ -590,7 +602,7 @@ static int __init spu_map_interrupts(struct spu *spu, struct device_node *np) return spu->irqs[2] == NO_IRQ ? -EINVAL : 0; } -static int __init spu_map_device(struct spu *spu, struct device_node *node) +static int __init spu_map_device_old(struct spu *spu, struct device_node *node) { const char *prop; int ret; @@ -635,6 +647,88 @@ out: return ret; } +static int __init spu_map_interrupts(struct spu *spu, struct device_node *np) +{ + struct of_irq oirq; + int ret; + int i; + + for (i=0; i < 3; i++) { + ret = of_irq_map_one(np, i, &oirq); + if (ret) + goto err; + + ret = -EINVAL; + spu->irqs[i] = irq_create_of_mapping(oirq.controller, + oirq.specifier, oirq.size); + if (spu->irqs[i] == NO_IRQ) + goto err; + } + return 0; + +err: + pr_debug("failed to map irq %x for spu %s\n", *oirq.specifier, spu->name); + for (; i >= 0; i--) { + if (spu->irqs[i] != NO_IRQ) + irq_dispose_mapping(spu->irqs[i]); + } + return ret; +} + +static int spu_map_resource(struct device_node *node, int nr, + void __iomem** virt, unsigned long *phys) +{ + struct resource resource = { }; + int ret; + + ret = of_address_to_resource(node, 0, &resource); + if (ret) + goto out; + + if (phys) + *phys = resource.start; + *virt = ioremap(resource.start, resource.end - resource.start); + if (!*virt) + ret = -EINVAL; + +out: + return ret; +} + +static int __init spu_map_device(struct spu *spu, struct device_node *node) +{ + int ret = -ENODEV; + spu->name = get_property(node, "name", NULL); + if (!spu->name) + goto out; + + ret = spu_map_resource(node, 0, (void __iomem**)&spu->local_store, + &spu->local_store_phys); + if (ret) + goto out; + ret = spu_map_resource(node, 1, (void __iomem**)&spu->problem, + &spu->problem_phys); + if (ret) + goto out_unmap; + ret = spu_map_resource(node, 2, (void __iomem**)&spu->priv2, + NULL); + if (ret) + goto out_unmap; + + if (!firmware_has_feature(FW_FEATURE_LPAR)) + ret = spu_map_resource(node, 3, (void __iomem**)&spu->priv1, + NULL); + if (ret) + goto out_unmap; + return 0; + +out_unmap: + spu_unmap(spu); +out: + pr_debug("failed to map spe %s: %d\n", spu->name, ret); + return ret; +} + struct sysdev_class spu_sysdev_class = { set_kset_name("spu") }; @@ -688,6 +782,9 @@ static int __init create_spu(struct device_node *spe) goto out; ret = spu_map_device(spu, spe); + /* try old method */ + if (ret) + ret = spu_map_device_old(spu, spe); if (ret) goto out_free; @@ -697,6 +794,8 @@ static int __init create_spu(struct device_node *spe) spu->nid = 0; ret = spu_map_interrupts(spu, spe); if (ret) + ret = spu_map_interrupts_old(spu, spe); + if (ret) goto out_unmap; spin_lock_init(&spu->register_lock); spu_mfc_sdr_set(spu, mfspr(SPRN_SDR1)); @@ -706,13 +805,13 @@ static int __init create_spu(struct device_node *spe) spu->number = number++; ret = spu_request_irqs(spu); if (ret) - goto out_unmap; + goto out_unlock; ret = spu_create_sysdev(spu); if (ret) goto out_free_irqs; - list_add(&spu->list, &spu_list); + list_add(&spu->list, &spu_list[spu->node]); mutex_unlock(&spu_mutex); pr_debug(KERN_DEBUG "Using SPE %s %02x %p %p %p %p %d\n", @@ -722,9 +821,9 @@ static int __init create_spu(struct device_node *spe) out_free_irqs: spu_free_irqs(spu); - -out_unmap: +out_unlock: mutex_unlock(&spu_mutex); +out_unmap: spu_unmap(spu); out_free: kfree(spu); @@ -745,9 +844,13 @@ static void destroy_spu(struct spu *spu) static void cleanup_spu_base(void) { struct spu *spu, *tmp; + int node; + mutex_lock(&spu_mutex); - list_for_each_entry_safe(spu, tmp, &spu_list, list) - destroy_spu(spu); + for (node = 0; node < MAX_NUMNODES; node++) { + list_for_each_entry_safe(spu, tmp, &spu_list[node], list) + destroy_spu(spu); + } mutex_unlock(&spu_mutex); sysdev_class_unregister(&spu_sysdev_class); } @@ -756,13 +859,16 @@ module_exit(cleanup_spu_base); static int __init init_spu_base(void) { struct device_node *node; - int ret; + int i, ret; /* create sysdev class for spus */ ret = sysdev_class_register(&spu_sysdev_class); if (ret) return ret; + for (i = 0; i < MAX_NUMNODES; i++) + INIT_LIST_HEAD(&spu_list[i]); + ret = -ENODEV; for (node = of_find_node_by_type(NULL, "spe"); node; node = of_find_node_by_type(node, "spe")) { @@ -774,18 +880,6 @@ static int __init init_spu_base(void) break; } } - /* in some old firmware versions, the spe is called 'spc', so we - look for that as well */ - for (node = of_find_node_by_type(NULL, "spc"); - node; node = of_find_node_by_type(node, "spc")) { - ret = create_spu(node); - if (ret) { - printk(KERN_WARNING "%s: Error initializing %s\n", - __FUNCTION__, node->name); - cleanup_spu_base(); - break; - } - } return ret; } module_init(init_spu_base); |