sparc32: Move cache and TLB flushes over to method ops.

This eliminated most of the remaining users of btfixup.

There are some complications because of the special cases we
have for sun4d, leon, and some flavors of viking.

It was found that there are no cases where a flush_page_for_dma
method was not hooked up to something, so the "noflush" iommu
methods were removed.

Add some documentation to the viking_sun4d_smp_ops to describe exactly
the hardware bug which causes us to need special TLB flushing on
sun4d.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 10 deletions

diff --git a/arch/sparc/kernel/sun4m_smp.c b/arch/sparc/kernel/sun4m_smp.c
index 29f8ace10b59..afcf6743f0eb 100644
--- a/arch/sparc/kernel/sun4m_smp.c
+++ b/arch/sparc/kernel/sun4m_smp.c
@@ -8,12 +8,14 @@
 #include <linux/interrupt.h>
 #include <linux/profile.h>
 #include <linux/delay.h>
+#include <linux/sched.h>
 #include <linux/cpu.h>
 
 #include <asm/cacheflush.h>
 #include <asm/switch_to.h>
 #include <asm/tlbflush.h>
 #include <asm/timer.h>
+#include <asm/oplib.h>
 
 #include "irq.h"
 #include "kernel.h"
@@ -38,8 +40,8 @@ void __cpuinit smp4m_callin(void)
 {
 	int cpuid = hard_smp_processor_id();
 
-	local_flush_cache_all();
-	local_flush_tlb_all();
+	local_ops->cache_all();
+	local_ops->tlb_all();
 
 	notify_cpu_starting(cpuid);
 
@@ -48,8 +50,8 @@ void __cpuinit smp4m_callin(void)
 	calibrate_delay();
 	smp_store_cpu_info(cpuid);
 
-	local_flush_cache_all();
-	local_flush_tlb_all();
+	local_ops->cache_all();
+	local_ops->tlb_all();
 
 	/*
 	 * Unblock the master CPU _only_ when the scheduler state
@@ -61,8 +63,8 @@ void __cpuinit smp4m_callin(void)
 	swap_ulong(&cpu_callin_map[cpuid], 1);
 
 	/* XXX: What's up with all the flushes? */
-	local_flush_cache_all();
-	local_flush_tlb_all();
+	local_ops->cache_all();
+	local_ops->tlb_all();
 
 	/* Fix idle thread fields. */
 	__asm__ __volatile__("ld [%0], %%g6\n\t"
@@ -88,7 +90,7 @@ void __init smp4m_boot_cpus(void)
 {
 	smp4m_ipi_init();
 	sun4m_unmask_profile_irq();
-	local_flush_cache_all();
+	local_ops->cache_all();
 }
 
 int __cpuinit smp4m_boot_one_cpu(int i)
@@ -117,7 +119,7 @@ int __cpuinit smp4m_boot_one_cpu(int i)
 
 	/* whirrr, whirrr, whirrrrrrrrr... */
 	printk(KERN_INFO "Starting CPU %d at %p\n", i, entry);
-	local_flush_cache_all();
+	local_ops->cache_all();
 	prom_startcpu(cpu_node, &smp_penguin_ctable, 0, (char *)entry);
 
 	/* wheee... it's going... */
@@ -132,7 +134,7 @@ int __cpuinit smp4m_boot_one_cpu(int i)
 		return -ENODEV;
 	}
 
-	local_flush_cache_all();
+	local_ops->cache_all();
 	return 0;
 }
 
@@ -149,7 +151,7 @@ void __init smp4m_smp_done(void)
 		prev = &cpu_data(i).next;
 	}
 	*prev = first;
-	local_flush_cache_all();
+	local_ops->cache_all();
 
 	/* Ok, they are spinning and ready to go. */
 }