sparc64: Move generic PCR support code to seperate file.

It all lives in the oprofile support code currently and we will need
to share this stuff with NMI watchdog and perf_counter support.

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

1 files changed, 3 insertions, 107 deletions

diff --git a/arch/sparc/oprofile/init.c b/arch/sparc/oprofile/init.c
index d6e170c074fc..c8877a5202b0 100644
--- a/arch/sparc/oprofile/init.c
+++ b/arch/sparc/oprofile/init.c
@@ -17,47 +17,10 @@
 #include <asm/spitfire.h>
 #include <asm/cpudata.h>
 #include <asm/irq.h>
+#include <asm/pcr.h>
 
 static int nmi_enabled;
 
-struct pcr_ops {
-        u64 (*read)(void);
-        void (*write)(u64);
-};
-static const struct pcr_ops *pcr_ops;
-
-static u64 direct_pcr_read(void)
-{
-        u64 val;
-
-        read_pcr(val);
-        return val;
-}
-
-static void direct_pcr_write(u64 val)
-{
-        write_pcr(val);
-}
-
-static const struct pcr_ops direct_pcr_ops = {
-        .read   = direct_pcr_read,
-        .write  = direct_pcr_write,
-};
-
-static void n2_pcr_write(u64 val)
-{
-        unsigned long ret;
-
-        ret = sun4v_niagara2_setperf(HV_N2_PERF_SPARC_CTL, val);
-        if (val != HV_EOK)
-                write_pcr(val);
-}
-
-static const struct pcr_ops n2_pcr_ops = {
-        .read   = direct_pcr_read,
-        .write  = n2_pcr_write,
-};
-
 /* In order to commonize as much of the implementation as
  * possible, we use PICH as our counter.  Mostly this is
  * to accomodate Niagara-1 which can only count insn cycles
@@ -70,30 +33,13 @@ static u64 picl_value(void)
         return ((u64)((0 - delta) & 0xffffffff)) << 32;
 }
 
-#define PCR_PIC_PRIV            0x00000001 /* PIC access is privileged */
-#define PCR_STRACE              0x00000002 /* Trace supervisor events  */
-#define PCR_UTRACE              0x00000004 /* Trace user events        */
-#define PCR_N2_HTRACE           0x00000008 /* Trace hypervisor events  */
-#define PCR_N2_TOE_OV0          0x00000010 /* Trap if PIC 0 overflows  */
-#define PCR_N2_TOE_OV1          0x00000020 /* Trap if PIC 1 overflows  */
-#define PCR_N2_MASK0            0x00003fc0
-#define PCR_N2_MASK0_SHIFT      6
-#define PCR_N2_SL0              0x0003c000
-#define PCR_N2_SL0_SHIFT        14
-#define PCR_N2_OV0              0x00040000
-#define PCR_N2_MASK1            0x07f80000
-#define PCR_N2_MASK1_SHIFT      19
-#define PCR_N2_SL1              0x78000000
-#define PCR_N2_SL1_SHIFT        27
-#define PCR_N2_OV1              0x80000000
-
 #define PCR_SUN4U_ENABLE        (PCR_PIC_PRIV | PCR_STRACE | PCR_UTRACE)
 #define PCR_N2_ENABLE           (PCR_PIC_PRIV | PCR_STRACE | PCR_UTRACE | \
                                  PCR_N2_TOE_OV1 | \
                                  (2 << PCR_N2_SL1_SHIFT) | \
                                  (0xff << PCR_N2_MASK1_SHIFT))
 
-static u64 pcr_enable = PCR_SUN4U_ENABLE;
+static u64 pcr_enable;
 
 static void nmi_handler(struct pt_regs *regs)
 {
@@ -153,62 +99,16 @@ static void nmi_stop(void)
         synchronize_sched();
 }
 
-static unsigned long perf_hsvc_group;
-static unsigned long perf_hsvc_major;
-static unsigned long perf_hsvc_minor;
-
-static int __init register_perf_hsvc(void)
-{
-        if (tlb_type == hypervisor) {
-                switch (sun4v_chip_type) {
-                case SUN4V_CHIP_NIAGARA1:
-                        perf_hsvc_group = HV_GRP_NIAG_PERF;
-                        break;
-
-                case SUN4V_CHIP_NIAGARA2:
-                        perf_hsvc_group = HV_GRP_N2_CPU;
-                        break;
-
-                default:
-                        return -ENODEV;
-                }
-
-
-                perf_hsvc_major = 1;
-                perf_hsvc_minor = 0;
-                if (sun4v_hvapi_register(perf_hsvc_group,
-                                         perf_hsvc_major,
-                                         &perf_hsvc_minor)) {
-                        printk("perfmon: Could not register N2 hvapi.\n");
-                        return -ENODEV;
-                }
-        }
-        return 0;
-}
-
-static void unregister_perf_hsvc(void)
-{
-        if (tlb_type != hypervisor)
-                return;
-        sun4v_hvapi_unregister(perf_hsvc_group);
-}
-
 static int oprofile_nmi_init(struct oprofile_operations *ops)
 {
-        int err = register_perf_hsvc();
-
-        if (err)
-                return err;
-
         switch (tlb_type) {
         case hypervisor:
-                pcr_ops = &n2_pcr_ops;
                 pcr_enable = PCR_N2_ENABLE;
                 break;
 
         case cheetah:
         case cheetah_plus:
-                pcr_ops = &direct_pcr_ops;
+                pcr_enable = PCR_SUN4U_ENABLE;
                 break;
 
         default:
@@ -241,10 +141,6 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
         return ret;
 }
 
-
 void oprofile_arch_exit(void)
 {
-#ifdef CONFIG_SPARC64
-        unregister_perf_hsvc();
-#endif
 }