Auto-update from upstream

1 files changed, 21 insertions, 83 deletions

diff --git a/arch/powerpc/platforms/cell/pervasive.c b/arch/powerpc/platforms/cell/pervasive.c
index 7eed8c624517..695ac4e1617e 100644
--- a/arch/powerpc/platforms/cell/pervasive.c
+++ b/arch/powerpc/platforms/cell/pervasive.c
@@ -37,36 +37,28 @@
 #include <asm/reg.h>
 
 #include "pervasive.h"
+#include "cbe_regs.h"
 
 static DEFINE_SPINLOCK(cbe_pervasive_lock);
-struct cbe_pervasive {
-	struct pmd_regs __iomem *regs;
-	unsigned int thread;
-};
-
-/* can't use per_cpu from setup_arch */
-static struct cbe_pervasive cbe_pervasive[NR_CPUS];
 
 static void __init cbe_enable_pause_zero(void)
 {
 	unsigned long thread_switch_control;
 	unsigned long temp_register;
-	struct cbe_pervasive *p;
-	int thread;
+	struct cbe_pmd_regs __iomem *pregs;
 
 	spin_lock_irq(&cbe_pervasive_lock);
-	p = &cbe_pervasive[smp_processor_id()];
-
-	if (!cbe_pervasive->regs)
+	pregs = cbe_get_cpu_pmd_regs(smp_processor_id());
+	if (pregs == NULL)
 		goto out;
 
 	pr_debug("Power Management: CPU %d\n", smp_processor_id());
 
 	 /* Enable Pause(0) control bit */
-	temp_register = in_be64(&p->regs->pm_control);
+	temp_register = in_be64(&pregs->pm_control);
 
-	out_be64(&p->regs->pm_control,
-		 temp_register|PMD_PAUSE_ZERO_CONTROL);
+	out_be64(&pregs->pm_control,
+		 temp_register | CBE_PMD_PAUSE_ZERO_CONTROL);
 
 	/* Enable DEC and EE interrupt request */
 	thread_switch_control  = mfspr(SPRN_TSC_CELL);
@@ -75,25 +67,16 @@ static void __init cbe_enable_pause_zero(void)
 	switch ((mfspr(SPRN_CTRLF) & CTRL_CT)) {
 	case CTRL_CT0:
 		thread_switch_control |= TSC_CELL_DEC_ENABLE_0;
-		thread = 0;
 		break;
 	case CTRL_CT1:
 		thread_switch_control |= TSC_CELL_DEC_ENABLE_1;
-		thread = 1;
 		break;
 	default:
 		printk(KERN_WARNING "%s: unknown configuration\n",
 			__FUNCTION__);
-		thread = -1;
 		break;
 	}
 
-	if (p->thread != thread)
-		printk(KERN_WARNING "%s: device tree inconsistant, "
-				     "cpu %i: %d/%d\n", __FUNCTION__,
-				     smp_processor_id(),
-				     p->thread, thread);
-
 	mtspr(SPRN_TSC_CELL, thread_switch_control);
 
 out:
@@ -104,6 +87,11 @@ static void cbe_idle(void)
 {
 	unsigned long ctrl;
 
+	/* Why do we do that on every idle ? Couldn't that be done once for
+	 * all or do we lose the state some way ? Also, the pm_control
+	 * register setting, that can't be set once at boot ? We really want
+	 * to move that away in order to implement a simple powersave
+	 */
 	cbe_enable_pause_zero();
 
 	while (1) {
@@ -152,8 +140,15 @@ static int cbe_system_reset_exception(struct pt_regs *regs)
 		timer_interrupt(regs);
 		break;
 	case SRR1_WAKEMT:
-		/* no action required */
 		break;
+#ifdef CONFIG_CBE_RAS
+	case SRR1_WAKESYSERR:
+		cbe_system_error_exception(regs);
+		break;
+	case SRR1_WAKETHERM:
+		cbe_thermal_exception(regs);
+		break;
+#endif /* CONFIG_CBE_RAS */
 	default:
 		/* do system reset */
 		return 0;
@@ -162,68 +157,11 @@ static int cbe_system_reset_exception(struct pt_regs *regs)
 	return 1;
 }
 
-static int __init cbe_find_pmd_mmio(int cpu, struct cbe_pervasive *p)
-{
-	struct device_node *node;
-	unsigned int *int_servers;
-	char *addr;
-	unsigned long real_address;
-	unsigned int size;
-
-	struct pmd_regs __iomem *pmd_mmio_area;
-	int hardid, thread;
-	int proplen;
-
-	pmd_mmio_area = NULL;
-	hardid = get_hard_smp_processor_id(cpu);
-	for (node = NULL; (node = of_find_node_by_type(node, "cpu"));) {
-		int_servers = (void *) get_property(node,
-				"ibm,ppc-interrupt-server#s", &proplen);
-		if (!int_servers) {
-			printk(KERN_WARNING "%s misses "
-				"ibm,ppc-interrupt-server#s property",
-				node->full_name);
-			continue;
-		}
-		for (thread = 0; thread < proplen / sizeof (int); thread++) {
-			if (hardid == int_servers[thread]) {
-				addr = get_property(node, "pervasive", NULL);
-				goto found;
-			}
-		}
-	}
-
-	printk(KERN_WARNING "%s: CPU %d not found\n", __FUNCTION__, cpu);
-	return -EINVAL;
-
-found:
-	real_address = *(unsigned long*) addr;
-	addr += sizeof (unsigned long);
-	size = *(unsigned int*) addr;
-
-	pr_debug("pervasive area for CPU %d at %lx, size %x\n",
-			cpu, real_address, size);
-	p->regs = ioremap(real_address, size);
-	p->thread = thread;
-	return 0;
-}
-
-void __init cell_pervasive_init(void)
+void __init cbe_pervasive_init(void)
 {
-	struct cbe_pervasive *p;
-	int cpu;
-	int ret;
-
 	if (!cpu_has_feature(CPU_FTR_PAUSE_ZERO))
 		return;
 
-	for_each_possible_cpu(cpu) {
-		p = &cbe_pervasive[cpu];
-		ret = cbe_find_pmd_mmio(cpu, p);
-		if (ret)
-			return;
-	}
-
 	ppc_md.idle_loop = cbe_idle;
 	ppc_md.system_reset_exception = cbe_system_reset_exception;
 }