Merge branch 'next-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc into test
Merge miscellaneous bits from benh. Fix a minor conflict with
OpalMessageType changing names to opal_msg_type.
diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
index 34a05a1..0dc42c5 100644
--- a/arch/powerpc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
@@ -76,9 +76,6 @@
#define _set_L3CR(val) do { } while(0)
#endif
-extern void cacheable_memzero(void *p, unsigned int nb);
-extern void *cacheable_memcpy(void *, const void *, unsigned int);
-
#endif /* !__ASSEMBLY__ */
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_CACHE_H */
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index 0ef0fd6..c08de77 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -210,6 +210,8 @@
extern int opal_message_notifier_register(enum opal_msg_type msg_type,
struct notifier_block *nb);
+extern int opal_message_notifier_unregister(enum opal_msg_type msg_type,
+ struct notifier_block *nb);
extern void opal_notifier_enable(void);
extern void opal_notifier_disable(void);
extern void opal_notifier_update_evt(uint64_t evt_mask, uint64_t evt_val);
diff --git a/arch/powerpc/lib/copy_32.S b/arch/powerpc/lib/copy_32.S
index 55f19f9..6813f80 100644
--- a/arch/powerpc/lib/copy_32.S
+++ b/arch/powerpc/lib/copy_32.S
@@ -69,54 +69,6 @@
LG_CACHELINE_BYTES = L1_CACHE_SHIFT
CACHELINE_MASK = (L1_CACHE_BYTES-1)
-/*
- * Use dcbz on the complete cache lines in the destination
- * to set them to zero. This requires that the destination
- * area is cacheable. -- paulus
- */
-_GLOBAL(cacheable_memzero)
- mr r5,r4
- li r4,0
- addi r6,r3,-4
- cmplwi 0,r5,4
- blt 7f
- stwu r4,4(r6)
- beqlr
- andi. r0,r6,3
- add r5,r0,r5
- subf r6,r0,r6
- clrlwi r7,r6,32-LG_CACHELINE_BYTES
- add r8,r7,r5
- srwi r9,r8,LG_CACHELINE_BYTES
- addic. r9,r9,-1 /* total number of complete cachelines */
- ble 2f
- xori r0,r7,CACHELINE_MASK & ~3
- srwi. r0,r0,2
- beq 3f
- mtctr r0
-4: stwu r4,4(r6)
- bdnz 4b
-3: mtctr r9
- li r7,4
-10: dcbz r7,r6
- addi r6,r6,CACHELINE_BYTES
- bdnz 10b
- clrlwi r5,r8,32-LG_CACHELINE_BYTES
- addi r5,r5,4
-2: srwi r0,r5,2
- mtctr r0
- bdz 6f
-1: stwu r4,4(r6)
- bdnz 1b
-6: andi. r5,r5,3
-7: cmpwi 0,r5,0
- beqlr
- mtctr r5
- addi r6,r6,3
-8: stbu r4,1(r6)
- bdnz 8b
- blr
-
_GLOBAL(memset)
rlwimi r4,r4,8,16,23
rlwimi r4,r4,16,0,15
@@ -142,85 +94,6 @@
bdnz 8b
blr
-/*
- * This version uses dcbz on the complete cache lines in the
- * destination area to reduce memory traffic. This requires that
- * the destination area is cacheable.
- * We only use this version if the source and dest don't overlap.
- * -- paulus.
- */
-_GLOBAL(cacheable_memcpy)
- add r7,r3,r5 /* test if the src & dst overlap */
- add r8,r4,r5
- cmplw 0,r4,r7
- cmplw 1,r3,r8
- crand 0,0,4 /* cr0.lt &= cr1.lt */
- blt memcpy /* if regions overlap */
-
- addi r4,r4,-4
- addi r6,r3,-4
- neg r0,r3
- andi. r0,r0,CACHELINE_MASK /* # bytes to start of cache line */
- beq 58f
-
- cmplw 0,r5,r0 /* is this more than total to do? */
- blt 63f /* if not much to do */
- andi. r8,r0,3 /* get it word-aligned first */
- subf r5,r0,r5
- mtctr r8
- beq+ 61f
-70: lbz r9,4(r4) /* do some bytes */
- stb r9,4(r6)
- addi r4,r4,1
- addi r6,r6,1
- bdnz 70b
-61: srwi. r0,r0,2
- mtctr r0
- beq 58f
-72: lwzu r9,4(r4) /* do some words */
- stwu r9,4(r6)
- bdnz 72b
-
-58: srwi. r0,r5,LG_CACHELINE_BYTES /* # complete cachelines */
- clrlwi r5,r5,32-LG_CACHELINE_BYTES
- li r11,4
- mtctr r0
- beq 63f
-53:
- dcbz r11,r6
- COPY_16_BYTES
-#if L1_CACHE_BYTES >= 32
- COPY_16_BYTES
-#if L1_CACHE_BYTES >= 64
- COPY_16_BYTES
- COPY_16_BYTES
-#if L1_CACHE_BYTES >= 128
- COPY_16_BYTES
- COPY_16_BYTES
- COPY_16_BYTES
- COPY_16_BYTES
-#endif
-#endif
-#endif
- bdnz 53b
-
-63: srwi. r0,r5,2
- mtctr r0
- beq 64f
-30: lwzu r0,4(r4)
- stwu r0,4(r6)
- bdnz 30b
-
-64: andi. r0,r5,3
- mtctr r0
- beq+ 65f
-40: lbz r0,4(r4)
- stb r0,4(r6)
- addi r4,r4,1
- addi r6,r6,1
- bdnz 40b
-65: blr
-
_GLOBAL(memmove)
cmplw 0,r3,r4
bgt backwards_memcpy
diff --git a/arch/powerpc/lib/locks.c b/arch/powerpc/lib/locks.c
index 170a034..f7deebd 100644
--- a/arch/powerpc/lib/locks.c
+++ b/arch/powerpc/lib/locks.c
@@ -41,6 +41,7 @@
plpar_hcall_norets(H_CONFER,
get_hard_smp_processor_id(holder_cpu), yield_count);
}
+EXPORT_SYMBOL_GPL(__spin_yield);
/*
* Waiting for a read lock or a write lock on a rwlock...
diff --git a/arch/powerpc/lib/ppc_ksyms.c b/arch/powerpc/lib/ppc_ksyms.c
index f993959..c7f8e95 100644
--- a/arch/powerpc/lib/ppc_ksyms.c
+++ b/arch/powerpc/lib/ppc_ksyms.c
@@ -8,10 +8,6 @@
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(memcmp);
EXPORT_SYMBOL(memchr);
-#ifdef CONFIG_PPC32
-EXPORT_SYMBOL(cacheable_memcpy);
-EXPORT_SYMBOL(cacheable_memzero);
-#endif
EXPORT_SYMBOL(strcpy);
EXPORT_SYMBOL(strncpy);
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index 5029dc1..eb0e489 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -224,7 +224,7 @@
*/
if ( ppc_md.progress ) ppc_md.progress("hash:find piece", 0x322);
Hash = __va(memblock_alloc(Hash_size, Hash_size));
- cacheable_memzero(Hash, Hash_size);
+ memset(Hash, 0, Hash_size);
_SDR1 = __pa(Hash) | SDR1_LOW_BITS;
Hash_end = (struct hash_pte *) ((unsigned long)Hash + Hash_size);
diff --git a/arch/powerpc/platforms/powermac/bootx_init.c b/arch/powerpc/platforms/powermac/bootx_init.c
index 3e91ef5..76f5013 100644
--- a/arch/powerpc/platforms/powermac/bootx_init.c
+++ b/arch/powerpc/platforms/powermac/bootx_init.c
@@ -246,7 +246,7 @@
DBG(" detected display ! adding properties names !\n");
bootx_dt_add_string("linux,boot-display", mem_end);
bootx_dt_add_string("linux,opened", mem_end);
- strncpy(bootx_disp_path, namep, 255);
+ strlcpy(bootx_disp_path, namep, sizeof(bootx_disp_path));
}
/* get and store all property names */
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 4c24bf6..59cfc9d 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -321,6 +321,9 @@
max_irqs = max_real_irqs = 64;
/* We might have a second cascaded heathrow */
+
+ /* Compensate for of_node_put() in of_find_node_by_name() */
+ of_node_get(master);
slave = of_find_node_by_name(master, "mac-io");
/* Check ordering of master & slave */
diff --git a/arch/powerpc/platforms/powernv/opal-flash.c b/arch/powerpc/platforms/powernv/opal-flash.c
index 5c21d9c..0ff07ff 100644
--- a/arch/powerpc/platforms/powernv/opal-flash.c
+++ b/arch/powerpc/platforms/powernv/opal-flash.c
@@ -120,7 +120,11 @@
static struct image_data_t image_data;
static struct validate_flash_t validate_flash_data;
static struct manage_flash_t manage_flash_data;
-static struct update_flash_t update_flash_data;
+
+/* Initialize update_flash_data status to No Operation */
+static struct update_flash_t update_flash_data = {
+ .status = FLASH_NO_OP,
+};
static DEFINE_MUTEX(image_data_mutex);
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index 142a08a..d403b2b 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -23,6 +23,8 @@
#include <linux/kobject.h>
#include <linux/delay.h>
#include <linux/memblock.h>
+#include <linux/kthread.h>
+#include <linux/freezer.h>
#include <asm/machdep.h>
#include <asm/opal.h>
@@ -58,6 +60,7 @@
static DEFINE_SPINLOCK(opal_notifier_lock);
static uint64_t last_notified_mask = 0x0ul;
static atomic_t opal_notifier_hold = ATOMIC_INIT(0);
+static uint32_t opal_heartbeat;
static void opal_reinit_cores(void)
{
@@ -305,20 +308,23 @@
int opal_message_notifier_register(enum opal_msg_type msg_type,
struct notifier_block *nb)
{
- if (!nb) {
- pr_warning("%s: Invalid argument (%p)\n",
- __func__, nb);
- return -EINVAL;
- }
- if (msg_type > OPAL_MSG_TYPE_MAX) {
- pr_warning("%s: Invalid message type argument (%d)\n",
+ if (!nb || msg_type >= OPAL_MSG_TYPE_MAX) {
+ pr_warning("%s: Invalid arguments, msg_type:%d\n",
__func__, msg_type);
return -EINVAL;
}
+
return atomic_notifier_chain_register(
&opal_msg_notifier_head[msg_type], nb);
}
+int opal_message_notifier_unregister(enum opal_msg_type msg_type,
+ struct notifier_block *nb)
+{
+ return atomic_notifier_chain_unregister(
+ &opal_msg_notifier_head[msg_type], nb);
+}
+
static void opal_message_do_notify(uint32_t msg_type, void *msg)
{
/* notify subscribers */
@@ -351,7 +357,7 @@
type = be32_to_cpu(msg.msg_type);
/* Sanity check */
- if (type > OPAL_MSG_TYPE_MAX) {
+ if (type >= OPAL_MSG_TYPE_MAX) {
pr_warning("%s: Unknown message type: %u\n", __func__, type);
return;
}
@@ -744,6 +750,29 @@
}
}
+static int kopald(void *unused)
+{
+ set_freezable();
+ do {
+ try_to_freeze();
+ opal_poll_events(NULL);
+ msleep_interruptible(opal_heartbeat);
+ } while (!kthread_should_stop());
+
+ return 0;
+}
+
+static void opal_init_heartbeat(void)
+{
+ /* Old firwmware, we assume the HVC heartbeat is sufficient */
+ if (of_property_read_u32(opal_node, "ibm,heartbeat-ms",
+ &opal_heartbeat) != 0)
+ opal_heartbeat = 0;
+
+ if (opal_heartbeat)
+ kthread_run(kopald, NULL, "kopald");
+}
+
static int __init opal_init(void)
{
struct device_node *np, *consoles;
@@ -772,6 +801,9 @@
/* Create i2c platform devices */
opal_i2c_create_devs();
+ /* Setup a heatbeat thread if requested by OPAL */
+ opal_init_heartbeat();
+
/* Find all OPAL interrupts and request them */
opal_irq_init(opal_node);
@@ -794,6 +826,7 @@
opal_msglog_init();
}
+ /* Initialize OPAL IPMI backend */
opal_ipmi_init(opal_node);
return 0;