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-rw-r--r--arch/powerpc/kernel/Makefile1
-rw-r--r--arch/powerpc/kernel/cputable.c5
-rw-r--r--arch/powerpc/kernel/head_32.S7
-rw-r--r--arch/powerpc/kernel/module_32.c23
-rw-r--r--arch/powerpc/kernel/module_64.c23
-rw-r--r--arch/powerpc/kernel/of_device.c4
-rw-r--r--arch/powerpc/kernel/of_platform.c2
-rw-r--r--arch/powerpc/kernel/pci_32.c143
-rw-r--r--arch/powerpc/kernel/pci_64.c42
-rw-r--r--arch/powerpc/kernel/ppc_ksyms.c2
-rw-r--r--arch/powerpc/kernel/prom.c55
-rw-r--r--arch/powerpc/kernel/prom_init.c2
-rw-r--r--arch/powerpc/kernel/rtas.c35
-rw-r--r--arch/powerpc/kernel/sysfs.c16
-rw-r--r--arch/powerpc/kernel/traps.c56
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S6
16 files changed, 228 insertions, 194 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 4fe53d08ab81..d2ded19e4064 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -77,6 +77,7 @@ endif
ifeq ($(CONFIG_PPC_ISERIES),y)
extra-y += lparmap.s
+$(obj)/head_64.o: $(obj)/lparmap.s
AFLAGS_head_64.o += -I$(obj)
endif
diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c
index 9d1614c3ce67..b742013bb9da 100644
--- a/arch/powerpc/kernel/cputable.c
+++ b/arch/powerpc/kernel/cputable.c
@@ -833,7 +833,7 @@ static struct cpu_spec cpu_specs[] = {
.pvr_mask = 0x7fff0000,
.pvr_value = 0x00840000,
.cpu_name = "e300c2",
- .cpu_features = CPU_FTRS_E300,
+ .cpu_features = CPU_FTRS_E300C2,
.cpu_user_features = PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU,
.icache_bsize = 32,
.dcache_bsize = 32,
@@ -1136,8 +1136,7 @@ static struct cpu_spec cpu_specs[] = {
.pvr_mask = 0xff000fff,
.pvr_value = 0x53000890,
.cpu_name = "440SPe Rev. A",
- .cpu_features = CPU_FTR_SPLIT_ID_CACHE |
- CPU_FTR_USE_TB,
+ .cpu_features = CPU_FTRS_44X,
.cpu_user_features = COMMON_USER_BOOKE,
.icache_bsize = 32,
.dcache_bsize = 32,
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S
index d88e182e40b3..9417cf5b4b7e 100644
--- a/arch/powerpc/kernel/head_32.S
+++ b/arch/powerpc/kernel/head_32.S
@@ -437,6 +437,13 @@ Alignment:
/* Floating-point unavailable */
. = 0x800
FPUnavailable:
+BEGIN_FTR_SECTION
+/*
+ * Certain Freescale cores don't have a FPU and treat fp instructions
+ * as a FP Unavailable exception. Redirect to illegal/emulation handling.
+ */
+ b ProgramCheck
+END_FTR_SECTION_IFSET(CPU_FTR_FPU_UNAVAILABLE)
EXCEPTION_PROLOG
bne load_up_fpu /* if from user, just load it up */
addi r3,r1,STACK_FRAME_OVERHEAD
diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c
index e2c3c6a85f33..8339fd609de0 100644
--- a/arch/powerpc/kernel/module_32.c
+++ b/arch/powerpc/kernel/module_32.c
@@ -23,6 +23,7 @@
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/cache.h>
+#include <linux/bug.h>
#include "setup.h"
@@ -290,23 +291,11 @@ int module_finalize(const Elf_Ehdr *hdr,
struct module *me)
{
const Elf_Shdr *sect;
+ int err;
- me->arch.bug_table = NULL;
- me->arch.num_bugs = 0;
-
- /* Find the __bug_table section, if present */
- sect = find_section(hdr, sechdrs, "__bug_table");
- if (sect != NULL) {
- me->arch.bug_table = (void *) sect->sh_addr;
- me->arch.num_bugs = sect->sh_size / sizeof(struct bug_entry);
- }
-
- /*
- * Strictly speaking this should have a spinlock to protect against
- * traversals, but since we only traverse on BUG()s, a spinlock
- * could potentially lead to deadlock and thus be counter-productive.
- */
- list_add(&me->arch.bug_list, &module_bug_list);
+ err = module_bug_finalize(hdr, sechdrs, me);
+ if (err) /* never true, currently */
+ return err;
/* Apply feature fixups */
sect = find_section(hdr, sechdrs, "__ftr_fixup");
@@ -320,7 +309,7 @@ int module_finalize(const Elf_Ehdr *hdr,
void module_arch_cleanup(struct module *mod)
{
- list_del(&mod->arch.bug_list);
+ module_bug_cleanup(mod);
}
struct bug_entry *module_find_bug(unsigned long bugaddr)
diff --git a/arch/powerpc/kernel/module_64.c b/arch/powerpc/kernel/module_64.c
index 8dd1f0aae5d6..75c7c4f19280 100644
--- a/arch/powerpc/kernel/module_64.c
+++ b/arch/powerpc/kernel/module_64.c
@@ -20,6 +20,7 @@
#include <linux/moduleloader.h>
#include <linux/err.h>
#include <linux/vmalloc.h>
+#include <linux/bug.h>
#include <asm/module.h>
#include <asm/uaccess.h>
#include <asm/firmware.h>
@@ -439,23 +440,11 @@ int module_finalize(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs, struct module *me)
{
const Elf_Shdr *sect;
+ int err;
- me->arch.bug_table = NULL;
- me->arch.num_bugs = 0;
-
- /* Find the __bug_table section, if present */
- sect = find_section(hdr, sechdrs, "__bug_table");
- if (sect != NULL) {
- me->arch.bug_table = (void *) sect->sh_addr;
- me->arch.num_bugs = sect->sh_size / sizeof(struct bug_entry);
- }
-
- /*
- * Strictly speaking this should have a spinlock to protect against
- * traversals, but since we only traverse on BUG()s, a spinlock
- * could potentially lead to deadlock and thus be counter-productive.
- */
- list_add(&me->arch.bug_list, &module_bug_list);
+ err = module_bug_finalize(hdr, sechdrs, me);
+ if (err)
+ return err;
/* Apply feature fixups */
sect = find_section(hdr, sechdrs, "__ftr_fixup");
@@ -475,7 +464,7 @@ int module_finalize(const Elf_Ehdr *hdr,
void module_arch_cleanup(struct module *mod)
{
- list_del(&mod->arch.bug_list);
+ module_bug_cleanup(mod);
}
struct bug_entry *module_find_bug(unsigned long bugaddr)
diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c
index 8a06724e029e..e921514e655b 100644
--- a/arch/powerpc/kernel/of_device.c
+++ b/arch/powerpc/kernel/of_device.c
@@ -109,9 +109,7 @@ int of_device_register(struct of_device *ofdev)
if (rc)
return rc;
- device_create_file(&ofdev->dev, &dev_attr_devspec);
-
- return 0;
+ return device_create_file(&ofdev->dev, &dev_attr_devspec);
}
void of_device_unregister(struct of_device *ofdev)
diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c
index b3189d0161b8..3002ea3a61a2 100644
--- a/arch/powerpc/kernel/of_platform.c
+++ b/arch/powerpc/kernel/of_platform.c
@@ -169,7 +169,7 @@ static void of_platform_make_bus_id(struct of_device *dev)
char *name = dev->dev.bus_id;
const u32 *reg;
u64 addr;
- long magic;
+ int magic;
/*
* If it's a DCR based device, use 'd' for native DCRs
diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 2f54cd81dea5..8336deafc624 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -736,25 +736,51 @@ scan_OF_pci_childs(struct device_node* node, pci_OF_scan_iterator filter, void*
return NULL;
}
-static int
-scan_OF_pci_childs_iterator(struct device_node* node, void* data)
+static struct device_node *scan_OF_for_pci_dev(struct device_node *parent,
+ unsigned int devfn)
{
- const unsigned int *reg;
- u8* fdata = (u8*)data;
-
- reg = get_property(node, "reg", NULL);
- if (reg && ((reg[0] >> 8) & 0xff) == fdata[1]
- && ((reg[0] >> 16) & 0xff) == fdata[0])
- return 1;
- return 0;
+ struct device_node *np = NULL;
+ const u32 *reg;
+ unsigned int psize;
+
+ while ((np = of_get_next_child(parent, np)) != NULL) {
+ reg = get_property(np, "reg", &psize);
+ if (reg == NULL || psize < 4)
+ continue;
+ if (((reg[0] >> 8) & 0xff) == devfn)
+ return np;
+ }
+ return NULL;
}
-static struct device_node*
-scan_OF_childs_for_device(struct device_node* node, u8 bus, u8 dev_fn)
+
+static struct device_node *scan_OF_for_pci_bus(struct pci_bus *bus)
{
- u8 filter_data[2] = {bus, dev_fn};
+ struct device_node *parent, *np;
+
+ /* Are we a root bus ? */
+ if (bus->self == NULL || bus->parent == NULL) {
+ struct pci_controller *hose = pci_bus_to_hose(bus->number);
+ if (hose == NULL)
+ return NULL;
+ return of_node_get(hose->arch_data);
+ }
+
+ /* not a root bus, we need to get our parent */
+ parent = scan_OF_for_pci_bus(bus->parent);
+ if (parent == NULL)
+ return NULL;
+
+ /* now iterate for children for a match */
+ np = scan_OF_for_pci_dev(parent, bus->self->devfn);
+ of_node_put(parent);
- return scan_OF_pci_childs(node, scan_OF_pci_childs_iterator, filter_data);
+ /* sanity check */
+ if (strcmp(np->type, "pci") != 0)
+ printk(KERN_WARNING "pci: wrong type \"%s\" for bridge %s\n",
+ np->type, np->full_name);
+
+ return np;
}
/*
@@ -763,43 +789,25 @@ scan_OF_childs_for_device(struct device_node* node, u8 bus, u8 dev_fn)
struct device_node *
pci_busdev_to_OF_node(struct pci_bus *bus, int devfn)
{
- struct pci_controller *hose;
- struct device_node *node;
- int busnr;
+ struct device_node *parent, *np;
if (!have_of)
return NULL;
-
- /* Lookup the hose */
- busnr = bus->number;
- hose = pci_bus_to_hose(busnr);
- if (!hose)
- return NULL;
- /* Check it has an OF node associated */
- node = (struct device_node *) hose->arch_data;
- if (!node)
+ DBG("pci_busdev_to_OF_node(%d,0x%x)\n", bus->number, devfn);
+ parent = scan_OF_for_pci_bus(bus);
+ if (parent == NULL)
return NULL;
-
- /* Fixup bus number according to what OF think it is. */
-#ifdef CONFIG_PPC_PMAC
- /* The G5 need a special case here. Basically, we don't remap all
- * busses on it so we don't create the pci-OF-map. However, we do
- * remap the AGP bus and so have to deal with it. A future better
- * fix has to be done by making the remapping per-host and always
- * filling the pci_to_OF map. --BenH
+ DBG(" parent is %s\n", parent ? parent->full_name : "<NULL>");
+ np = scan_OF_for_pci_dev(parent, devfn);
+ of_node_put(parent);
+ DBG(" result is %s\n", np ? np->full_name : "<NULL>");
+
+ /* XXX most callers don't release the returned node
+ * mostly because ppc64 doesn't increase the refcount,
+ * we need to fix that.
*/
- if (machine_is(powermac) && busnr >= 0xf0)
- busnr -= 0xf0;
- else
-#endif
- if (pci_to_OF_bus_map)
- busnr = pci_to_OF_bus_map[busnr];
- if (busnr == 0xff)
- return NULL;
-
- /* Now, lookup childs of the hose */
- return scan_OF_childs_for_device(node->child, busnr, devfn);
+ return np;
}
EXPORT_SYMBOL(pci_busdev_to_OF_node);
@@ -1544,7 +1552,7 @@ pci_resource_to_bus(struct pci_dev *pdev, struct resource *res)
static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
- unsigned long *offset,
+ resource_size_t *offset,
enum pci_mmap_state mmap_state)
{
struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
@@ -1556,7 +1564,9 @@ static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
/* If memory, add on the PCI bridge address offset */
if (mmap_state == pci_mmap_mem) {
+#if 0 /* See comment in pci_resource_to_user() for why this is disabled */
*offset += hose->pci_mem_offset;
+#endif
res_bit = IORESOURCE_MEM;
} else {
io_offset = hose->io_base_virt - (void __iomem *)_IO_BASE;
@@ -1624,9 +1634,6 @@ static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
else
prot |= _PAGE_GUARDED;
- printk("PCI map for %s:%llx, prot: %lx\n", pci_name(dev),
- (unsigned long long)rp->start, prot);
-
return __pgprot(prot);
}
@@ -1695,7 +1702,7 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
enum pci_mmap_state mmap_state,
int write_combine)
{
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+ resource_size_t offset = vma->vm_pgoff << PAGE_SHIFT;
struct resource *rp;
int ret;
@@ -1808,22 +1815,42 @@ void pci_resource_to_user(const struct pci_dev *dev, int bar,
resource_size_t *start, resource_size_t *end)
{
struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
- unsigned long offset = 0;
+ resource_size_t offset = 0;
if (hose == NULL)
return;
if (rsrc->flags & IORESOURCE_IO)
- offset = (void __iomem *)_IO_BASE - hose->io_base_virt
- + hose->io_base_phys;
+ offset = (unsigned long)hose->io_base_virt - _IO_BASE;
+
+ /* We pass a fully fixed up address to userland for MMIO instead of
+ * a BAR value because X is lame and expects to be able to use that
+ * to pass to /dev/mem !
+ *
+ * That means that we'll have potentially 64 bits values where some
+ * userland apps only expect 32 (like X itself since it thinks only
+ * Sparc has 64 bits MMIO) but if we don't do that, we break it on
+ * 32 bits CHRPs :-(
+ *
+ * Hopefully, the sysfs insterface is immune to that gunk. Once X
+ * has been fixed (and the fix spread enough), we can re-enable the
+ * 2 lines below and pass down a BAR value to userland. In that case
+ * we'll also have to re-enable the matching code in
+ * __pci_mmap_make_offset().
+ *
+ * BenH.
+ */
+#if 0
+ else if (rsrc->flags & IORESOURCE_MEM)
+ offset = hose->pci_mem_offset;
+#endif
- *start = rsrc->start + offset;
- *end = rsrc->end + offset;
+ *start = rsrc->start - offset;
+ *end = rsrc->end - offset;
}
-void __init
-pci_init_resource(struct resource *res, unsigned long start, unsigned long end,
- int flags, char *name)
+void __init pci_init_resource(struct resource *res, resource_size_t start,
+ resource_size_t end, int flags, char *name)
{
res->start = start;
res->end = end;
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 6fa9a0a5c8db..a6b7692c7269 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -682,7 +682,7 @@ int pci_proc_domain(struct pci_bus *bus)
* Returns negative error code on failure, zero on success.
*/
static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
- unsigned long *offset,
+ resource_size_t *offset,
enum pci_mmap_state mmap_state)
{
struct pci_controller *hose = pci_bus_to_host(dev->bus);
@@ -694,7 +694,9 @@ static struct resource *__pci_mmap_make_offset(struct pci_dev *dev,
/* If memory, add on the PCI bridge address offset */
if (mmap_state == pci_mmap_mem) {
+#if 0 /* See comment in pci_resource_to_user() for why this is disabled */
*offset += hose->pci_mem_offset;
+#endif
res_bit = IORESOURCE_MEM;
} else {
io_offset = (unsigned long)hose->io_base_virt - pci_io_base;
@@ -762,9 +764,6 @@ static pgprot_t __pci_mmap_set_pgprot(struct pci_dev *dev, struct resource *rp,
else
prot |= _PAGE_GUARDED;
- printk(KERN_DEBUG "PCI map for %s:%lx, prot: %lx\n", pci_name(dev), rp->start,
- prot);
-
return __pgprot(prot);
}
@@ -832,7 +831,7 @@ pgprot_t pci_phys_mem_access_prot(struct file *file,
int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine)
{
- unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
+ resource_size_t offset = vma->vm_pgoff << PAGE_SHIFT;
struct resource *rp;
int ret;
@@ -1333,20 +1332,41 @@ EXPORT_SYMBOL(pci_read_irq_line);
void pci_resource_to_user(const struct pci_dev *dev, int bar,
const struct resource *rsrc,
- u64 *start, u64 *end)
+ resource_size_t *start, resource_size_t *end)
{
struct pci_controller *hose = pci_bus_to_host(dev->bus);
- unsigned long offset = 0;
+ resource_size_t offset = 0;
if (hose == NULL)
return;
if (rsrc->flags & IORESOURCE_IO)
- offset = pci_io_base - (unsigned long)hose->io_base_virt +
- hose->io_base_phys;
+ offset = (unsigned long)hose->io_base_virt - pci_io_base;
+
+ /* We pass a fully fixed up address to userland for MMIO instead of
+ * a BAR value because X is lame and expects to be able to use that
+ * to pass to /dev/mem !
+ *
+ * That means that we'll have potentially 64 bits values where some
+ * userland apps only expect 32 (like X itself since it thinks only
+ * Sparc has 64 bits MMIO) but if we don't do that, we break it on
+ * 32 bits CHRPs :-(
+ *
+ * Hopefully, the sysfs insterface is immune to that gunk. Once X
+ * has been fixed (and the fix spread enough), we can re-enable the
+ * 2 lines below and pass down a BAR value to userland. In that case
+ * we'll also have to re-enable the matching code in
+ * __pci_mmap_make_offset().
+ *
+ * BenH.
+ */
+#if 0
+ else if (rsrc->flags & IORESOURCE_MEM)
+ offset = hose->pci_mem_offset;
+#endif
- *start = rsrc->start + offset;
- *end = rsrc->end + offset;
+ *start = rsrc->start - offset;
+ *end = rsrc->end - offset;
}
struct pci_controller* pci_find_hose_for_OF_device(struct device_node* node)
diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c
index 9179f0739ea2..95776b6af4e2 100644
--- a/arch/powerpc/kernel/ppc_ksyms.c
+++ b/arch/powerpc/kernel/ppc_ksyms.c
@@ -208,7 +208,7 @@ EXPORT_SYMBOL(mmu_hash_lock); /* For MOL */
extern long *intercept_table;
EXPORT_SYMBOL(intercept_table);
#endif /* CONFIG_PPC_STD_MMU_32 */
-#if defined(CONFIG_40x) || defined(CONFIG_BOOKE)
+#ifdef CONFIG_PPC_DCR_NATIVE
EXPORT_SYMBOL(__mtdcr);
EXPORT_SYMBOL(__mfdcr);
#endif
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index c18dbe77fdc2..1fc732a552db 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -804,6 +804,56 @@ static unsigned long __init dt_mem_next_cell(int s, cell_t **cellp)
return of_read_ulong(p, s);
}
+#ifdef CONFIG_PPC_PSERIES
+/*
+ * Interpret the ibm,dynamic-memory property in the
+ * /ibm,dynamic-reconfiguration-memory node.
+ * This contains a list of memory blocks along with NUMA affinity
+ * information.
+ */
+static int __init early_init_dt_scan_drconf_memory(unsigned long node)
+{
+ cell_t *dm, *ls;
+ unsigned long l, n;
+ unsigned long base, size, lmb_size, flags;
+
+ ls = (cell_t *)of_get_flat_dt_prop(node, "ibm,lmb-size", &l);
+ if (ls == NULL || l < dt_root_size_cells * sizeof(cell_t))
+ return 0;
+ lmb_size = dt_mem_next_cell(dt_root_size_cells, &ls);
+
+ dm = (cell_t *)of_get_flat_dt_prop(node, "ibm,dynamic-memory", &l);
+ if (dm == NULL || l < sizeof(cell_t))
+ return 0;
+
+ n = *dm++; /* number of entries */
+ if (l < (n * (dt_root_addr_cells + 4) + 1) * sizeof(cell_t))
+ return 0;
+
+ for (; n != 0; --n) {
+ base = dt_mem_next_cell(dt_root_addr_cells, &dm);
+ flags = dm[3];
+ /* skip DRC index, pad, assoc. list index, flags */
+ dm += 4;
+ /* skip this block if the reserved bit is set in flags (0x80)
+ or if the block is not assigned to this partition (0x8) */
+ if ((flags & 0x80) || !(flags & 0x8))
+ continue;
+ size = lmb_size;
+ if (iommu_is_off) {
+ if (base >= 0x80000000ul)
+ continue;
+ if ((base + size) > 0x80000000ul)
+ size = 0x80000000ul - base;
+ }
+ lmb_add(base, size);
+ }
+ lmb_dump_all();
+ return 0;
+}
+#else
+#define early_init_dt_scan_drconf_memory(node) 0
+#endif /* CONFIG_PPC_PSERIES */
static int __init early_init_dt_scan_memory(unsigned long node,
const char *uname, int depth, void *data)
@@ -812,6 +862,11 @@ static int __init early_init_dt_scan_memory(unsigned long node,
cell_t *reg, *endp;
unsigned long l;
+ /* Look for the ibm,dynamic-reconfiguration-memory node */
+ if (depth == 1 &&
+ strcmp(uname, "ibm,dynamic-reconfiguration-memory") == 0)
+ return early_init_dt_scan_drconf_memory(node);
+
/* We are scanning "memory" nodes only */
if (type == NULL) {
/*
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 46cf32670ddb..520ef42f642e 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -679,7 +679,7 @@ static unsigned char ibm_architecture_vec[] = {
/* option vector 5: PAPR/OF options */
3 - 2, /* length */
0, /* don't ignore, don't halt */
- OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES,
+ OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY,
};
/* Old method - ELF header with PT_NOTE sections */
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 387ed0d9ad61..76b5d7ebdcc6 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -303,6 +303,12 @@ int rtas_token(const char *service)
}
EXPORT_SYMBOL(rtas_token);
+int rtas_service_present(const char *service)
+{
+ return rtas_token(service) != RTAS_UNKNOWN_SERVICE;
+}
+EXPORT_SYMBOL(rtas_service_present);
+
#ifdef CONFIG_RTAS_ERROR_LOGGING
/*
* Return the firmware-specified size of the error log buffer
@@ -810,32 +816,6 @@ asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
return 0;
}
-#ifdef CONFIG_HOTPLUG_CPU
-/* This version can't take the spinlock, because it never returns */
-static struct rtas_args rtas_stop_self_args = {
- /* The token is initialized for real in setup_system() */
- .token = RTAS_UNKNOWN_SERVICE,
- .nargs = 0,
- .nret = 1,
- .rets = &rtas_stop_self_args.args[0],
-};
-
-void rtas_stop_self(void)
-{
- struct rtas_args *rtas_args = &rtas_stop_self_args;
-
- local_irq_disable();
-
- BUG_ON(rtas_args->token == RTAS_UNKNOWN_SERVICE);
-
- printk("cpu %u (hwid %u) Ready to die...\n",
- smp_processor_id(), hard_smp_processor_id());
- enter_rtas(__pa(rtas_args));
-
- panic("Alas, I survived.\n");
-}
-#endif
-
/*
* Call early during boot, before mem init or bootmem, to retrieve the RTAS
* informations from the device-tree and allocate the RMO buffer for userland
@@ -880,9 +860,6 @@ void __init rtas_initialize(void)
#endif
rtas_rmo_buf = lmb_alloc_base(RTAS_RMOBUF_MAX, PAGE_SIZE, rtas_region);
-#ifdef CONFIG_HOTPLUG_CPU
- rtas_stop_self_args.token = rtas_token("stop-self");
-#endif /* CONFIG_HOTPLUG_CPU */
#ifdef CONFIG_RTAS_ERROR_LOGGING
rtas_last_error_token = rtas_token("rtas-last-error");
#endif
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index 63ed265b7f09..400ab2b946e7 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -181,6 +181,8 @@ SYSFS_PMCSETUP(pmc6, SPRN_PMC6);
SYSFS_PMCSETUP(pmc7, SPRN_PMC7);
SYSFS_PMCSETUP(pmc8, SPRN_PMC8);
SYSFS_PMCSETUP(purr, SPRN_PURR);
+SYSFS_PMCSETUP(spurr, SPRN_SPURR);
+SYSFS_PMCSETUP(dscr, SPRN_DSCR);
static SYSDEV_ATTR(mmcr0, 0600, show_mmcr0, store_mmcr0);
static SYSDEV_ATTR(mmcr1, 0600, show_mmcr1, store_mmcr1);
@@ -194,6 +196,8 @@ static SYSDEV_ATTR(pmc6, 0600, show_pmc6, store_pmc6);
static SYSDEV_ATTR(pmc7, 0600, show_pmc7, store_pmc7);
static SYSDEV_ATTR(pmc8, 0600, show_pmc8, store_pmc8);
static SYSDEV_ATTR(purr, 0600, show_purr, NULL);
+static SYSDEV_ATTR(spurr, 0600, show_spurr, NULL);
+static SYSDEV_ATTR(dscr, 0600, show_dscr, store_dscr);
static void register_cpu_online(unsigned int cpu)
{
@@ -231,6 +235,12 @@ static void register_cpu_online(unsigned int cpu)
if (cpu_has_feature(CPU_FTR_PURR))
sysdev_create_file(s, &attr_purr);
+
+ if (cpu_has_feature(CPU_FTR_SPURR))
+ sysdev_create_file(s, &attr_spurr);
+
+ if (cpu_has_feature(CPU_FTR_DSCR))
+ sysdev_create_file(s, &attr_dscr);
}
#ifdef CONFIG_HOTPLUG_CPU
@@ -272,6 +282,12 @@ static void unregister_cpu_online(unsigned int cpu)
if (cpu_has_feature(CPU_FTR_PURR))
sysdev_remove_file(s, &attr_purr);
+
+ if (cpu_has_feature(CPU_FTR_SPURR))
+ sysdev_remove_file(s, &attr_spurr);
+
+ if (cpu_has_feature(CPU_FTR_DSCR))
+ sysdev_remove_file(s, &attr_dscr);
}
#endif /* CONFIG_HOTPLUG_CPU */
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 0d4e203fa7a0..535f50665647 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -32,6 +32,7 @@
#include <linux/kprobes.h>
#include <linux/kexec.h>
#include <linux/backlight.h>
+#include <linux/bug.h>
#include <asm/kdebug.h>
#include <asm/pgtable.h>
@@ -727,54 +728,9 @@ static int emulate_instruction(struct pt_regs *regs)
return -EINVAL;
}
-/*
- * Look through the list of trap instructions that are used for BUG(),
- * BUG_ON() and WARN_ON() and see if we hit one. At this point we know
- * that the exception was caused by a trap instruction of some kind.
- * Returns 1 if we should continue (i.e. it was a WARN_ON) or 0
- * otherwise.
- */
-extern struct bug_entry __start___bug_table[], __stop___bug_table[];
-
-#ifndef CONFIG_MODULES
-#define module_find_bug(x) NULL
-#endif
-
-struct bug_entry *find_bug(unsigned long bugaddr)
+int is_valid_bugaddr(unsigned long addr)
{
- struct bug_entry *bug;
-
- for (bug = __start___bug_table; bug < __stop___bug_table; ++bug)
- if (bugaddr == bug->bug_addr)
- return bug;
- return module_find_bug(bugaddr);
-}
-
-static int check_bug_trap(struct pt_regs *regs)
-{
- struct bug_entry *bug;
- unsigned long addr;
-
- if (regs->msr & MSR_PR)
- return 0; /* not in kernel */
- addr = regs->nip; /* address of trap instruction */
- if (addr < PAGE_OFFSET)
- return 0;
- bug = find_bug(regs->nip);
- if (bug == NULL)
- return 0;
- if (bug->line & BUG_WARNING_TRAP) {
- /* this is a WARN_ON rather than BUG/BUG_ON */
- printk(KERN_ERR "Badness in %s at %s:%ld\n",
- bug->function, bug->file,
- bug->line & ~BUG_WARNING_TRAP);
- dump_stack();
- return 1;
- }
- printk(KERN_CRIT "kernel BUG in %s at %s:%ld!\n",
- bug->function, bug->file, bug->line);
-
- return 0;
+ return is_kernel_addr(addr);
}
void __kprobes program_check_exception(struct pt_regs *regs)
@@ -782,6 +738,8 @@ void __kprobes program_check_exception(struct pt_regs *regs)
unsigned int reason = get_reason(regs);
extern int do_mathemu(struct pt_regs *regs);
+ /* We can now get here via a FP Unavailable exception if the core
+ * has no FPU, in that case no reason flags will be set */
#ifdef CONFIG_MATH_EMULATION
/* (reason & REASON_ILLEGAL) would be the obvious thing here,
* but there seems to be a hardware bug on the 405GP (RevD)
@@ -808,7 +766,9 @@ void __kprobes program_check_exception(struct pt_regs *regs)
return;
if (debugger_bpt(regs))
return;
- if (check_bug_trap(regs)) {
+
+ if (!(regs->msr & MSR_PR) && /* not user-mode */
+ report_bug(regs->nip) == BUG_TRAP_TYPE_WARN) {
regs->nip += 4;
return;
}
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 04b98671a060..04b8e71bf5b0 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -62,11 +62,7 @@ SECTIONS
__stop___ex_table = .;
}
- __bug_table : {
- __start___bug_table = .;
- *(__bug_table)
- __stop___bug_table = .;
- }
+ BUG_TABLE
/*
* Init sections discarded at runtime