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authorDavid S. Miller <davem@davemloft.net>2009-01-21 21:30:23 -0800
committerDavid S. Miller <davem@davemloft.net>2009-01-28 17:13:57 -0800
commit3eb8057bbafc64dbf09d5c18513aa80c1b7f2fcb (patch)
tree77852bad482b27316d7333a2633b3fec61a4797b /arch/sparc/oprofile/init.c
parent5376071069ec8a7e6a8112beab16fc24f5139475 (diff)
downloadlinux-linaro-3eb8057bbafc64dbf09d5c18513aa80c1b7f2fcb.tar.gz
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>
Diffstat (limited to 'arch/sparc/oprofile/init.c')
-rw-r--r--arch/sparc/oprofile/init.c110
1 files changed, 3 insertions, 107 deletions
diff --git a/arch/sparc/oprofile/init.c b/arch/sparc/oprofile/init.c
index d6e170c074f..c8877a5202b 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
}