#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/mm.h>
+#include <linux/io.h>
#include <linux/mutex.h>
+#include <linux/linux_logo.h>
#include <asm/spu.h>
#include <asm/spu_priv1.h>
-#include <asm/mmu_context.h>
+#include <asm/spu_csa.h>
+#include <asm/xmon.h>
+#include <asm/prom.h>
-#include "interrupt.h"
+const struct spu_management_ops *spu_management_ops;
+EXPORT_SYMBOL_GPL(spu_management_ops);
const struct spu_priv1_ops *spu_priv1_ops;
-
EXPORT_SYMBOL_GPL(spu_priv1_ops);
+struct cbe_spu_info cbe_spu_info[MAX_NUMNODES];
+EXPORT_SYMBOL_GPL(cbe_spu_info);
+
+/*
+ * The spufs fault-handling code needs to call force_sig_info to raise signals
+ * on DMA errors. Export it here to avoid general kernel-wide access to this
+ * function
+ */
+EXPORT_SYMBOL_GPL(force_sig_info);
+
+/*
+ * Protects cbe_spu_info and spu->number.
+ */
+static DEFINE_SPINLOCK(spu_lock);
+
+/*
+ * List of all spus in the system.
+ *
+ * This list is iterated by callers from irq context and callers that
+ * want to sleep. Thus modifications need to be done with both
+ * spu_full_list_lock and spu_full_list_mutex held, while iterating
+ * through it requires either of these locks.
+ *
+ * In addition spu_full_list_lock protects all assignmens to
+ * spu->mm.
+ */
+static LIST_HEAD(spu_full_list);
+static DEFINE_SPINLOCK(spu_full_list_lock);
+static DEFINE_MUTEX(spu_full_list_mutex);
+
+struct spu_slb {
+ u64 esid, vsid;
+};
+
+void spu_invalidate_slbs(struct spu *spu)
+{
+ struct spu_priv2 __iomem *priv2 = spu->priv2;
+
+ if (spu_mfc_sr1_get(spu) & MFC_STATE1_RELOCATE_MASK)
+ out_be64(&priv2->slb_invalidate_all_W, 0UL);
+}
+EXPORT_SYMBOL_GPL(spu_invalidate_slbs);
+
+/* This is called by the MM core when a segment size is changed, to
+ * request a flush of all the SPEs using a given mm
+ */
+void spu_flush_all_slbs(struct mm_struct *mm)
+{
+ struct spu *spu;
+ unsigned long flags;
+
+ spin_lock_irqsave(&spu_full_list_lock, flags);
+ list_for_each_entry(spu, &spu_full_list, full_list) {
+ if (spu->mm == mm)
+ spu_invalidate_slbs(spu);
+ }
+ spin_unlock_irqrestore(&spu_full_list_lock, flags);
+}
+
+/* The hack below stinks... try to do something better one of
+ * these days... Does it even work properly with NR_CPUS == 1 ?
+ */
+static inline void mm_needs_global_tlbie(struct mm_struct *mm)
+{
+ int nr = (NR_CPUS > 1) ? NR_CPUS : NR_CPUS + 1;
+
+ /* Global TLBIE broadcast required with SPEs. */
+ __cpus_setall(&mm->cpu_vm_mask, nr);
+}
+
+void spu_associate_mm(struct spu *spu, struct mm_struct *mm)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&spu_full_list_lock, flags);
+ spu->mm = mm;
+ spin_unlock_irqrestore(&spu_full_list_lock, flags);
+ if (mm)
+ mm_needs_global_tlbie(mm);
+}
+EXPORT_SYMBOL_GPL(spu_associate_mm);
+
+int spu_64k_pages_available(void)
+{
+ return mmu_psize_defs[MMU_PAGE_64K].shift != 0;
+}
+EXPORT_SYMBOL_GPL(spu_64k_pages_available);
+
static int __spu_trap_invalid_dma(struct spu *spu)
{
pr_debug("%s\n", __FUNCTION__);
out_be64(&priv2->mfc_control_RW, MFC_CNTL_RESTART_DMA_COMMAND);
}
-static int __spu_trap_data_seg(struct spu *spu, unsigned long ea)
+static inline void spu_load_slb(struct spu *spu, int slbe, struct spu_slb *slb)
{
struct spu_priv2 __iomem *priv2 = spu->priv2;
+
+ pr_debug("%s: adding SLB[%d] 0x%016lx 0x%016lx\n",
+ __func__, slbe, slb->vsid, slb->esid);
+
+ out_be64(&priv2->slb_index_W, slbe);
+ out_be64(&priv2->slb_vsid_RW, slb->vsid);
+ out_be64(&priv2->slb_esid_RW, slb->esid);
+}
+
+static int __spu_trap_data_seg(struct spu *spu, unsigned long ea)
+{
struct mm_struct *mm = spu->mm;
- u64 esid, vsid, llp;
+ struct spu_slb slb;
+ int psize;
pr_debug("%s\n", __FUNCTION__);
printk("%s: invalid access during switch!\n", __func__);
return 1;
}
- esid = (ea & ESID_MASK) | SLB_ESID_V;
+ slb.esid = (ea & ESID_MASK) | SLB_ESID_V;
switch(REGION_ID(ea)) {
case USER_REGION_ID:
-#ifdef CONFIG_HUGETLB_PAGE
- if (in_hugepage_area(mm->context, ea))
- llp = mmu_psize_defs[mmu_huge_psize].sllp;
- else
+#ifdef CONFIG_PPC_MM_SLICES
+ psize = get_slice_psize(mm, ea);
+#else
+ psize = mm->context.user_psize;
#endif
- llp = mmu_psize_defs[mmu_virtual_psize].sllp;
- vsid = (get_vsid(mm->context.id, ea) << SLB_VSID_SHIFT) |
- SLB_VSID_USER | llp;
+ slb.vsid = (get_vsid(mm->context.id, ea, MMU_SEGSIZE_256M)
+ << SLB_VSID_SHIFT) | SLB_VSID_USER;
break;
case VMALLOC_REGION_ID:
- llp = mmu_psize_defs[mmu_virtual_psize].sllp;
- vsid = (get_kernel_vsid(ea) << SLB_VSID_SHIFT) |
- SLB_VSID_KERNEL | llp;
+ if (ea < VMALLOC_END)
+ psize = mmu_vmalloc_psize;
+ else
+ psize = mmu_io_psize;
+ slb.vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M)
+ << SLB_VSID_SHIFT) | SLB_VSID_KERNEL;
break;
case KERNEL_REGION_ID:
- llp = mmu_psize_defs[mmu_linear_psize].sllp;
- vsid = (get_kernel_vsid(ea) << SLB_VSID_SHIFT) |
- SLB_VSID_KERNEL | llp;
+ psize = mmu_linear_psize;
+ slb.vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M)
+ << SLB_VSID_SHIFT) | SLB_VSID_KERNEL;
break;
default:
/* Future: support kernel segments so that drivers
pr_debug("invalid region access at %016lx\n", ea);
return 1;
}
+ slb.vsid |= mmu_psize_defs[psize].sllp;
- out_be64(&priv2->slb_index_W, spu->slb_replace);
- out_be64(&priv2->slb_vsid_RW, vsid);
- out_be64(&priv2->slb_esid_RW, esid);
+ spu_load_slb(spu, spu->slb_replace, &slb);
spu->slb_replace++;
if (spu->slb_replace >= 8)
spu->slb_replace = 0;
spu_restart_dma(spu);
-
+ spu->stats.slb_flt++;
return 0;
}
return 0;
}
+static void __spu_kernel_slb(void *addr, struct spu_slb *slb)
+{
+ unsigned long ea = (unsigned long)addr;
+ u64 llp;
+
+ if (REGION_ID(ea) == KERNEL_REGION_ID)
+ llp = mmu_psize_defs[mmu_linear_psize].sllp;
+ else
+ llp = mmu_psize_defs[mmu_virtual_psize].sllp;
+
+ slb->vsid = (get_kernel_vsid(ea, MMU_SEGSIZE_256M) << SLB_VSID_SHIFT) |
+ SLB_VSID_KERNEL | llp;
+ slb->esid = (ea & ESID_MASK) | SLB_ESID_V;
+}
+
+/**
+ * Given an array of @nr_slbs SLB entries, @slbs, return non-zero if the
+ * address @new_addr is present.
+ */
+static inline int __slb_present(struct spu_slb *slbs, int nr_slbs,
+ void *new_addr)
+{
+ unsigned long ea = (unsigned long)new_addr;
+ int i;
+
+ for (i = 0; i < nr_slbs; i++)
+ if (!((slbs[i].esid ^ ea) & ESID_MASK))
+ return 1;
+
+ return 0;
+}
+
+/**
+ * Setup the SPU kernel SLBs, in preparation for a context save/restore. We
+ * need to map both the context save area, and the save/restore code.
+ *
+ * Because the lscsa and code may cross segment boundaires, we check to see
+ * if mappings are required for the start and end of each range. We currently
+ * assume that the mappings are smaller that one segment - if not, something
+ * is seriously wrong.
+ */
+void spu_setup_kernel_slbs(struct spu *spu, struct spu_lscsa *lscsa,
+ void *code, int code_size)
+{
+ struct spu_slb slbs[4];
+ int i, nr_slbs = 0;
+ /* start and end addresses of both mappings */
+ void *addrs[] = {
+ lscsa, (void *)lscsa + sizeof(*lscsa) - 1,
+ code, code + code_size - 1
+ };
+
+ /* check the set of addresses, and create a new entry in the slbs array
+ * if there isn't already a SLB for that address */
+ for (i = 0; i < ARRAY_SIZE(addrs); i++) {
+ if (__slb_present(slbs, nr_slbs, addrs[i]))
+ continue;
+
+ __spu_kernel_slb(addrs[i], &slbs[nr_slbs]);
+ nr_slbs++;
+ }
+
+ /* Add the set of SLBs */
+ for (i = 0; i < nr_slbs; i++)
+ spu_load_slb(spu, i, &slbs[i]);
+}
+EXPORT_SYMBOL_GPL(spu_setup_kernel_slbs);
+
static irqreturn_t
spu_irq_class_0(int irq, void *data)
{
struct spu *spu;
+ unsigned long stat, mask;
spu = data;
- spu->class_0_pending = 1;
+
+ mask = spu_int_mask_get(spu, 0);
+ stat = spu_int_stat_get(spu, 0);
+ stat &= mask;
+
+ spin_lock(&spu->register_lock);
+ spu->class_0_pending |= stat;
+ spin_unlock(&spu->register_lock);
+
spu->stop_callback(spu);
+ spu_int_stat_clear(spu, 0, stat);
+
return IRQ_HANDLED;
}
int
spu_irq_class_0_bottom(struct spu *spu)
{
- unsigned long stat, mask;
+ unsigned long flags;
+ unsigned long stat;
+ spin_lock_irqsave(&spu->register_lock, flags);
+ stat = spu->class_0_pending;
spu->class_0_pending = 0;
- mask = spu_int_mask_get(spu, 0);
- stat = spu_int_stat_get(spu, 0);
-
- stat &= mask;
-
if (stat & 1) /* invalid DMA alignment */
__spu_trap_dma_align(spu);
if (stat & 4) /* error on SPU */
__spu_trap_error(spu);
- spu_int_stat_clear(spu, 0, stat);
+ spin_unlock_irqrestore(&spu->register_lock, flags);
return (stat & 0x7) ? -EIO : 0;
}
return stat ? IRQ_HANDLED : IRQ_NONE;
}
-EXPORT_SYMBOL_GPL(spu_irq_class_1_bottom);
static irqreturn_t
spu_irq_class_2(int irq, void *data)
if (stat & 0x10) /* SPU mailbox threshold */
spu->wbox_callback(spu);
+ spu->stats.class2_intr++;
return stat ? IRQ_HANDLED : IRQ_NONE;
}
free_irq(spu->irqs[2], spu);
}
-static struct list_head spu_list[MAX_NUMNODES];
-static LIST_HEAD(spu_full_list);
-static DEFINE_MUTEX(spu_mutex);
-
-static void spu_init_channels(struct spu *spu)
+void spu_init_channels(struct spu *spu)
{
static const struct {
unsigned channel;
out_be64(&priv2->spu_chnlcnt_RW, count_list[i].count);
}
}
+EXPORT_SYMBOL_GPL(spu_init_channels);
-struct spu *spu_alloc_node(int node)
-{
- struct spu *spu = NULL;
-
- mutex_lock(&spu_mutex);
- 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 %d %d\n", spu->number, spu->node);
- spu_init_channels(spu);
- }
- mutex_unlock(&spu_mutex);
-
- 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;
-}
-
-void spu_free(struct spu *spu)
-{
- mutex_lock(&spu_mutex);
- list_add_tail(&spu->list, &spu_list[spu->node]);
- mutex_unlock(&spu_mutex);
-}
-EXPORT_SYMBOL_GPL(spu_free);
-
-static int spu_handle_mm_fault(struct spu *spu)
-{
- struct mm_struct *mm = spu->mm;
- struct vm_area_struct *vma;
- u64 ea, dsisr, is_write;
- int ret;
-
- ea = spu->dar;
- dsisr = spu->dsisr;
-#if 0
- if (!IS_VALID_EA(ea)) {
- return -EFAULT;
- }
-#endif /* XXX */
- if (mm == NULL) {
- return -EFAULT;
- }
- if (mm->pgd == NULL) {
- return -EFAULT;
- }
-
- down_read(&mm->mmap_sem);
- vma = find_vma(mm, ea);
- if (!vma)
- goto bad_area;
- if (vma->vm_start <= ea)
- goto good_area;
- if (!(vma->vm_flags & VM_GROWSDOWN))
- goto bad_area;
-#if 0
- if (expand_stack(vma, ea))
- goto bad_area;
-#endif /* XXX */
-good_area:
- is_write = dsisr & MFC_DSISR_ACCESS_PUT;
- if (is_write) {
- if (!(vma->vm_flags & VM_WRITE))
- goto bad_area;
- } else {
- if (dsisr & MFC_DSISR_ACCESS_DENIED)
- goto bad_area;
- if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
- goto bad_area;
- }
- ret = 0;
- switch (handle_mm_fault(mm, vma, ea, is_write)) {
- case VM_FAULT_MINOR:
- current->min_flt++;
- break;
- case VM_FAULT_MAJOR:
- current->maj_flt++;
- break;
- case VM_FAULT_SIGBUS:
- ret = -EFAULT;
- goto bad_area;
- case VM_FAULT_OOM:
- ret = -ENOMEM;
- goto bad_area;
- default:
- BUG();
- }
- up_read(&mm->mmap_sem);
- return ret;
-
-bad_area:
- up_read(&mm->mmap_sem);
- return -EFAULT;
-}
-
-int spu_irq_class_1_bottom(struct spu *spu)
-{
- u64 ea, dsisr, access, error = 0UL;
- int ret = 0;
-
- ea = spu->dar;
- dsisr = spu->dsisr;
- if (dsisr & (MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED)) {
- u64 flags;
-
- access = (_PAGE_PRESENT | _PAGE_USER);
- access |= (dsisr & MFC_DSISR_ACCESS_PUT) ? _PAGE_RW : 0UL;
- local_irq_save(flags);
- if (hash_page(ea, access, 0x300) != 0)
- error |= CLASS1_ENABLE_STORAGE_FAULT_INTR;
- local_irq_restore(flags);
- }
- if (error & CLASS1_ENABLE_STORAGE_FAULT_INTR) {
- if ((ret = spu_handle_mm_fault(spu)) != 0)
- error |= CLASS1_ENABLE_STORAGE_FAULT_INTR;
- else
- error &= ~CLASS1_ENABLE_STORAGE_FAULT_INTR;
- }
- spu->dar = 0UL;
- spu->dsisr = 0UL;
- if (!error) {
- spu_restart_dma(spu);
- } else {
- __spu_trap_invalid_dma(spu);
- }
- return ret;
-}
-
-static int __init find_spu_node_id(struct device_node *spe)
-{
- const unsigned int *id;
- struct device_node *cpu;
- cpu = spe->parent->parent;
- id = get_property(cpu, "node-id", NULL);
- return id ? *id : 0;
-}
-
-static int __init cell_spuprop_present(struct spu *spu, struct device_node *spe,
- const char *prop)
-{
- static DEFINE_MUTEX(add_spumem_mutex);
-
- const struct address_prop {
- unsigned long address;
- unsigned int len;
- } __attribute__((packed)) *p;
- int proplen;
-
- unsigned long start_pfn, nr_pages;
- struct pglist_data *pgdata;
- struct zone *zone;
- int ret;
-
- p = 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;
-
- pgdata = NODE_DATA(spu->nid);
- 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 spu *spu,
- struct device_node *n, const char *name)
-{
- const struct address_prop {
- unsigned long address;
- unsigned int len;
- } __attribute__((packed)) *prop;
-
- const void *p;
- int proplen;
- void __iomem *ret = NULL;
- int err = 0;
-
- p = get_property(n, name, &proplen);
- if (proplen != sizeof (struct address_prop))
- return NULL;
-
- prop = p;
-
- err = cell_spuprop_present(spu, n, name);
- if (err && (err != -EEXIST))
- goto out;
-
- ret = ioremap(prop->address, prop->len);
-
- out:
- return ret;
-}
-
-static void spu_unmap(struct spu *spu)
-{
- iounmap(spu->priv2);
- iounmap(spu->priv1);
- iounmap(spu->problem);
- iounmap((__force u8 __iomem *)spu->local_store);
-}
-
-/* This function shall be abstracted for HV platforms */
-static int __init spu_map_interrupts_old(struct spu *spu, struct device_node *np)
-{
- unsigned int isrc;
- const u32 *tmp;
-
- /* Get the interrupt source unit from the device-tree */
- tmp = get_property(np, "isrc", NULL);
- if (!tmp)
- return -ENODEV;
- isrc = tmp[0];
-
- /* Add the node number */
- isrc |= spu->node << IIC_IRQ_NODE_SHIFT;
-
- /* Now map interrupts of all 3 classes */
- spu->irqs[0] = irq_create_mapping(NULL, IIC_IRQ_CLASS_0 | isrc);
- spu->irqs[1] = irq_create_mapping(NULL, IIC_IRQ_CLASS_1 | isrc);
- spu->irqs[2] = irq_create_mapping(NULL, IIC_IRQ_CLASS_2 | isrc);
-
- /* Right now, we only fail if class 2 failed */
- return spu->irqs[2] == NO_IRQ ? -EINVAL : 0;
-}
-
-static int __init spu_map_device_old(struct spu *spu, struct device_node *node)
-{
- const char *prop;
- int ret;
-
- ret = -ENODEV;
- spu->name = get_property(node, "name", NULL);
- if (!spu->name)
- goto out;
-
- prop = get_property(node, "local-store", NULL);
- if (!prop)
- goto out;
- spu->local_store_phys = *(unsigned long *)prop;
-
- /* we use local store as ram, not io memory */
- spu->local_store = (void __force *)
- map_spe_prop(spu, node, "local-store");
- if (!spu->local_store)
- goto out;
-
- prop = get_property(node, "problem", NULL);
- if (!prop)
- goto out_unmap;
- spu->problem_phys = *(unsigned long *)prop;
-
- spu->problem= map_spe_prop(spu, node, "problem");
- if (!spu->problem)
- goto out_unmap;
-
- spu->priv1= map_spe_prop(spu, node, "priv1");
- /* priv1 is not available on a hypervisor */
-
- spu->priv2= map_spe_prop(spu, node, "priv2");
- if (!spu->priv2)
- goto out_unmap;
- ret = 0;
- goto out;
-
-out_unmap:
- spu_unmap(spu);
-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)
+static int spu_shutdown(struct sys_device *sysdev)
{
- int ret = -ENODEV;
- spu->name = get_property(node, "name", NULL);
- if (!spu->name)
- goto out;
+ struct spu *spu = container_of(sysdev, struct spu, sysdev);
- 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;
+ spu_free_irqs(spu);
+ spu_destroy_spu(spu);
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")
+static struct sysdev_class spu_sysdev_class = {
+ set_kset_name("spu"),
+ .shutdown = spu_shutdown,
};
int spu_add_sysdev_attr(struct sysdev_attribute *attr)
{
struct spu *spu;
- mutex_lock(&spu_mutex);
+ mutex_lock(&spu_full_list_mutex);
list_for_each_entry(spu, &spu_full_list, full_list)
sysdev_create_file(&spu->sysdev, attr);
+ mutex_unlock(&spu_full_list_mutex);
- mutex_unlock(&spu_mutex);
return 0;
}
EXPORT_SYMBOL_GPL(spu_add_sysdev_attr);
int spu_add_sysdev_attr_group(struct attribute_group *attrs)
{
struct spu *spu;
- mutex_lock(&spu_mutex);
+ int rc = 0;
- list_for_each_entry(spu, &spu_full_list, full_list)
- sysfs_create_group(&spu->sysdev.kobj, attrs);
+ mutex_lock(&spu_full_list_mutex);
+ list_for_each_entry(spu, &spu_full_list, full_list) {
+ rc = sysfs_create_group(&spu->sysdev.kobj, attrs);
- mutex_unlock(&spu_mutex);
- return 0;
+ /* we're in trouble here, but try unwinding anyway */
+ if (rc) {
+ printk(KERN_ERR "%s: can't create sysfs group '%s'\n",
+ __func__, attrs->name);
+
+ list_for_each_entry_continue_reverse(spu,
+ &spu_full_list, full_list)
+ sysfs_remove_group(&spu->sysdev.kobj, attrs);
+ break;
+ }
+ }
+
+ mutex_unlock(&spu_full_list_mutex);
+
+ return rc;
}
EXPORT_SYMBOL_GPL(spu_add_sysdev_attr_group);
void spu_remove_sysdev_attr(struct sysdev_attribute *attr)
{
struct spu *spu;
- mutex_lock(&spu_mutex);
+ mutex_lock(&spu_full_list_mutex);
list_for_each_entry(spu, &spu_full_list, full_list)
sysdev_remove_file(&spu->sysdev, attr);
-
- mutex_unlock(&spu_mutex);
+ mutex_unlock(&spu_full_list_mutex);
}
EXPORT_SYMBOL_GPL(spu_remove_sysdev_attr);
void spu_remove_sysdev_attr_group(struct attribute_group *attrs)
{
struct spu *spu;
- mutex_lock(&spu_mutex);
+ mutex_lock(&spu_full_list_mutex);
list_for_each_entry(spu, &spu_full_list, full_list)
sysfs_remove_group(&spu->sysdev.kobj, attrs);
-
- mutex_unlock(&spu_mutex);
+ mutex_unlock(&spu_full_list_mutex);
}
EXPORT_SYMBOL_GPL(spu_remove_sysdev_attr_group);
return ret;
}
- sysfs_add_device_to_node(&spu->sysdev, spu->nid);
+ sysfs_add_device_to_node(&spu->sysdev, spu->node);
return 0;
}
-static void spu_destroy_sysdev(struct spu *spu)
-{
- sysfs_remove_device_from_node(&spu->sysdev, spu->nid);
- sysdev_unregister(&spu->sysdev);
-}
-
-static int __init create_spu(struct device_node *spe)
+static int __init create_spu(void *data)
{
struct spu *spu;
int ret;
static int number;
+ unsigned long flags;
+ struct timespec ts;
ret = -ENOMEM;
spu = kzalloc(sizeof (*spu), GFP_KERNEL);
if (!spu)
goto out;
- spu->node = find_spu_node_id(spe);
- if (spu->node >= MAX_NUMNODES) {
- printk(KERN_WARNING "SPE %s on node %d ignored,"
- " node number too big\n", spe->full_name, spu->node);
- printk(KERN_WARNING "Check if CONFIG_NUMA is enabled.\n");
- return -ENODEV;
- }
- spu->nid = of_node_to_nid(spe);
- if (spu->nid == -1)
- spu->nid = 0;
+ spu->alloc_state = SPU_FREE;
+
+ spin_lock_init(&spu->register_lock);
+ spin_lock(&spu_lock);
+ spu->number = number++;
+ spin_unlock(&spu_lock);
+
+ ret = spu_create_spu(spu, data);
- ret = spu_map_device(spu, spe);
- /* try old method */
- if (ret)
- ret = spu_map_device_old(spu, spe);
if (ret)
goto out_free;
- 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_setup(spu);
spu_mfc_sr1_set(spu, 0x33);
- mutex_lock(&spu_mutex);
-
- spu->number = number++;
ret = spu_request_irqs(spu);
if (ret)
- goto out_unlock;
+ goto out_destroy;
ret = spu_create_sysdev(spu);
if (ret)
goto out_free_irqs;
- list_add(&spu->list, &spu_list[spu->node]);
+ mutex_lock(&cbe_spu_info[spu->node].list_mutex);
+ list_add(&spu->cbe_list, &cbe_spu_info[spu->node].spus);
+ cbe_spu_info[spu->node].n_spus++;
+ mutex_unlock(&cbe_spu_info[spu->node].list_mutex);
+
+ mutex_lock(&spu_full_list_mutex);
+ spin_lock_irqsave(&spu_full_list_lock, flags);
list_add(&spu->full_list, &spu_full_list);
- spu->devnode = of_node_get(spe);
+ spin_unlock_irqrestore(&spu_full_list_lock, flags);
+ mutex_unlock(&spu_full_list_mutex);
+
+ spu->stats.util_state = SPU_UTIL_IDLE_LOADED;
+ ktime_get_ts(&ts);
+ spu->stats.tstamp = timespec_to_ns(&ts);
- mutex_unlock(&spu_mutex);
+ INIT_LIST_HEAD(&spu->aff_list);
- pr_debug(KERN_DEBUG "Using SPE %s %p %p %p %p %d\n",
- spu->name, spu->local_store,
- spu->problem, spu->priv1, spu->priv2, spu->number);
goto out;
out_free_irqs:
spu_free_irqs(spu);
-out_unlock:
- mutex_unlock(&spu_mutex);
-out_unmap:
- spu_unmap(spu);
+out_destroy:
+ spu_destroy_spu(spu);
out_free:
kfree(spu);
out:
return ret;
}
-static void destroy_spu(struct spu *spu)
+static const char *spu_state_names[] = {
+ "user", "system", "iowait", "idle"
+};
+
+static unsigned long long spu_acct_time(struct spu *spu,
+ enum spu_utilization_state state)
{
- list_del_init(&spu->list);
- list_del_init(&spu->full_list);
+ struct timespec ts;
+ unsigned long long time = spu->stats.times[state];
- of_node_put(spu->devnode);
+ /*
+ * If the spu is idle or the context is stopped, utilization
+ * statistics are not updated. Apply the time delta from the
+ * last recorded state of the spu.
+ */
+ if (spu->stats.util_state == state) {
+ ktime_get_ts(&ts);
+ time += timespec_to_ns(&ts) - spu->stats.tstamp;
+ }
- spu_destroy_sysdev(spu);
- spu_free_irqs(spu);
- spu_unmap(spu);
- kfree(spu);
+ return time / NSEC_PER_MSEC;
}
-static void cleanup_spu_base(void)
+
+static ssize_t spu_stat_show(struct sys_device *sysdev, char *buf)
{
- struct spu *spu, *tmp;
- int node;
+ struct spu *spu = container_of(sysdev, struct spu, sysdev);
- mutex_lock(&spu_mutex);
- 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);
+ return sprintf(buf, "%s %llu %llu %llu %llu "
+ "%llu %llu %llu %llu %llu %llu %llu %llu\n",
+ spu_state_names[spu->stats.util_state],
+ spu_acct_time(spu, SPU_UTIL_USER),
+ spu_acct_time(spu, SPU_UTIL_SYSTEM),
+ spu_acct_time(spu, SPU_UTIL_IOWAIT),
+ spu_acct_time(spu, SPU_UTIL_IDLE_LOADED),
+ spu->stats.vol_ctx_switch,
+ spu->stats.invol_ctx_switch,
+ spu->stats.slb_flt,
+ spu->stats.hash_flt,
+ spu->stats.min_flt,
+ spu->stats.maj_flt,
+ spu->stats.class2_intr,
+ spu->stats.libassist);
}
-module_exit(cleanup_spu_base);
+
+static SYSDEV_ATTR(stat, 0644, spu_stat_show, NULL);
static int __init init_spu_base(void)
{
- struct device_node *node;
- int i, ret;
+ int i, ret = 0;
+
+ for (i = 0; i < MAX_NUMNODES; i++) {
+ mutex_init(&cbe_spu_info[i].list_mutex);
+ INIT_LIST_HEAD(&cbe_spu_info[i].spus);
+ }
+
+ if (!spu_management_ops)
+ goto out;
/* create sysdev class for spus */
ret = sysdev_class_register(&spu_sysdev_class);
if (ret)
- return ret;
+ goto out;
- 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")) {
- ret = create_spu(node);
- if (ret) {
- printk(KERN_WARNING "%s: Error initializing %s\n",
- __FUNCTION__, node->name);
- cleanup_spu_base();
- break;
- }
+ ret = spu_enumerate_spus(create_spu);
+
+ if (ret < 0) {
+ printk(KERN_WARNING "%s: Error initializing spus\n",
+ __FUNCTION__);
+ goto out_unregister_sysdev_class;
+ }
+
+ if (ret > 0) {
+ /*
+ * We cannot put the forward declaration in
+ * <linux/linux_logo.h> because of conflicting session type
+ * conflicts for const and __initdata with different compiler
+ * versions
+ */
+ extern const struct linux_logo logo_spe_clut224;
+
+ fb_append_extra_logo(&logo_spe_clut224, ret);
}
+
+ mutex_lock(&spu_full_list_mutex);
+ xmon_register_spus(&spu_full_list);
+ crash_register_spus(&spu_full_list);
+ mutex_unlock(&spu_full_list_mutex);
+ spu_add_sysdev_attr(&attr_stat);
+
+ spu_init_affinity();
+
+ return 0;
+
+ out_unregister_sysdev_class:
+ sysdev_class_unregister(&spu_sysdev_class);
+ out:
return ret;
}
module_init(init_spu_base);