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-rw-r--r--arch/powerpc/include/asm/firmware.h3
-rw-r--r--arch/powerpc/include/asm/hvcall.h12
-rw-r--r--arch/powerpc/include/asm/pSeries_reconfig.h5
-rw-r--r--arch/powerpc/kernel/lparcfg.c53
-rw-r--r--arch/powerpc/kernel/prom_init.c4
-rw-r--r--arch/powerpc/kernel/rtas.c2
-rw-r--r--arch/powerpc/platforms/pseries/lpar.c46
-rw-r--r--arch/powerpc/platforms/pseries/setup.c11
8 files changed, 106 insertions, 30 deletions
diff --git a/arch/powerpc/include/asm/firmware.h b/arch/powerpc/include/asm/firmware.h
index 4ef662e4a31..3a6c586c4e4 100644
--- a/arch/powerpc/include/asm/firmware.h
+++ b/arch/powerpc/include/asm/firmware.h
@@ -47,6 +47,7 @@
#define FW_FEATURE_BEAT ASM_CONST(0x0000000001000000)
#define FW_FEATURE_CMO ASM_CONST(0x0000000002000000)
#define FW_FEATURE_VPHN ASM_CONST(0x0000000004000000)
+#define FW_FEATURE_XCMO ASM_CONST(0x0000000008000000)
#ifndef __ASSEMBLY__
@@ -60,7 +61,7 @@ enum {
FW_FEATURE_VIO | FW_FEATURE_RDMA | FW_FEATURE_LLAN |
FW_FEATURE_BULK_REMOVE | FW_FEATURE_XDABR |
FW_FEATURE_MULTITCE | FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
- FW_FEATURE_CMO | FW_FEATURE_VPHN,
+ FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO,
FW_FEATURE_PSERIES_ALWAYS = 0,
FW_FEATURE_ISERIES_POSSIBLE = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
FW_FEATURE_ISERIES_ALWAYS = FW_FEATURE_ISERIES | FW_FEATURE_LPAR,
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index 8edec710cc6..852b8c1c09d 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -102,6 +102,7 @@
#define H_ANDCOND (1UL<<(63-33))
#define H_ICACHE_INVALIDATE (1UL<<(63-40)) /* icbi, etc. (ignored for IO pages) */
#define H_ICACHE_SYNCHRONIZE (1UL<<(63-41)) /* dcbst, icbi, etc (ignored for IO pages */
+#define H_COALESCE_CAND (1UL<<(63-42)) /* page is a good candidate for coalescing */
#define H_ZERO_PAGE (1UL<<(63-48)) /* zero the page before mapping (ignored for IO pages) */
#define H_COPY_PAGE (1UL<<(63-49))
#define H_N (1UL<<(63-61))
@@ -234,6 +235,7 @@
#define H_GET_MPP 0x2D4
#define H_HOME_NODE_ASSOCIATIVITY 0x2EC
#define H_BEST_ENERGY 0x2F4
+#define H_GET_MPP_X 0x314
#define MAX_HCALL_OPCODE H_BEST_ENERGY
#ifndef __ASSEMBLY__
@@ -312,6 +314,16 @@ struct hvcall_mpp_data {
int h_get_mpp(struct hvcall_mpp_data *);
+struct hvcall_mpp_x_data {
+ unsigned long coalesced_bytes;
+ unsigned long pool_coalesced_bytes;
+ unsigned long pool_purr_cycles;
+ unsigned long pool_spurr_cycles;
+ unsigned long reserved[3];
+};
+
+int h_get_mpp_x(struct hvcall_mpp_x_data *mpp_x_data);
+
#ifdef CONFIG_PPC_PSERIES
extern int CMO_PrPSP;
extern int CMO_SecPSP;
diff --git a/arch/powerpc/include/asm/pSeries_reconfig.h b/arch/powerpc/include/asm/pSeries_reconfig.h
index d4b4bfa26fb..89d2f99c1bf 100644
--- a/arch/powerpc/include/asm/pSeries_reconfig.h
+++ b/arch/powerpc/include/asm/pSeries_reconfig.h
@@ -18,13 +18,18 @@
extern int pSeries_reconfig_notifier_register(struct notifier_block *);
extern void pSeries_reconfig_notifier_unregister(struct notifier_block *);
extern struct blocking_notifier_head pSeries_reconfig_chain;
+/* Not the best place to put this, will be fixed when we move some
+ * of the rtas suspend-me stuff to pseries */
+extern void pSeries_coalesce_init(void);
#else /* !CONFIG_PPC_PSERIES */
static inline int pSeries_reconfig_notifier_register(struct notifier_block *nb)
{
return 0;
}
static inline void pSeries_reconfig_notifier_unregister(struct notifier_block *nb) { }
+static inline void pSeries_coalesce_init(void) { }
#endif /* CONFIG_PPC_PSERIES */
+
#endif /* __KERNEL__ */
#endif /* _PPC64_PSERIES_RECONFIG_H */
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 301db65f05a..84daabe2fcb 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -132,34 +132,6 @@ static int iseries_lparcfg_data(struct seq_file *m, void *v)
/*
* Methods used to fetch LPAR data when running on a pSeries platform.
*/
-/**
- * h_get_mpp
- * H_GET_MPP hcall returns info in 7 parms
- */
-int h_get_mpp(struct hvcall_mpp_data *mpp_data)
-{
- int rc;
- unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
-
- rc = plpar_hcall9(H_GET_MPP, retbuf);
-
- mpp_data->entitled_mem = retbuf[0];
- mpp_data->mapped_mem = retbuf[1];
-
- mpp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff;
- mpp_data->pool_num = retbuf[2] & 0xffff;
-
- mpp_data->mem_weight = (retbuf[3] >> 7 * 8) & 0xff;
- mpp_data->unallocated_mem_weight = (retbuf[3] >> 6 * 8) & 0xff;
- mpp_data->unallocated_entitlement = retbuf[3] & 0xffffffffffff;
-
- mpp_data->pool_size = retbuf[4];
- mpp_data->loan_request = retbuf[5];
- mpp_data->backing_mem = retbuf[6];
-
- return rc;
-}
-EXPORT_SYMBOL(h_get_mpp);
struct hvcall_ppp_data {
u64 entitlement;
@@ -345,6 +317,30 @@ static void parse_mpp_data(struct seq_file *m)
seq_printf(m, "backing_memory=%ld bytes\n", mpp_data.backing_mem);
}
+/**
+ * parse_mpp_x_data
+ * Parse out data returned from h_get_mpp_x
+ */
+static void parse_mpp_x_data(struct seq_file *m)
+{
+ struct hvcall_mpp_x_data mpp_x_data;
+
+ if (!firmware_has_feature(FW_FEATURE_XCMO))
+ return;
+ if (h_get_mpp_x(&mpp_x_data))
+ return;
+
+ seq_printf(m, "coalesced_bytes=%ld\n", mpp_x_data.coalesced_bytes);
+
+ if (mpp_x_data.pool_coalesced_bytes)
+ seq_printf(m, "pool_coalesced_bytes=%ld\n",
+ mpp_x_data.pool_coalesced_bytes);
+ if (mpp_x_data.pool_purr_cycles)
+ seq_printf(m, "coalesce_pool_purr=%ld\n", mpp_x_data.pool_purr_cycles);
+ if (mpp_x_data.pool_spurr_cycles)
+ seq_printf(m, "coalesce_pool_spurr=%ld\n", mpp_x_data.pool_spurr_cycles);
+}
+
#define SPLPAR_CHARACTERISTICS_TOKEN 20
#define SPLPAR_MAXLENGTH 1026*(sizeof(char))
@@ -520,6 +516,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v)
parse_system_parameter_string(m);
parse_ppp_data(m);
parse_mpp_data(m);
+ parse_mpp_x_data(m);
pseries_cmo_data(m);
splpar_dispatch_data(m);
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 7839bd7bfd1..c016033ba78 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -700,8 +700,10 @@ static void __init early_cmdline_parse(void)
#endif /* CONFIG_PCI_MSI */
#ifdef CONFIG_PPC_SMLPAR
#define OV5_CMO 0x80 /* Cooperative Memory Overcommitment */
+#define OV5_XCMO 0x40 /* Page Coalescing */
#else
#define OV5_CMO 0x00
+#define OV5_XCMO 0x00
#endif
#define OV5_TYPE1_AFFINITY 0x80 /* Type 1 NUMA affinity */
@@ -756,7 +758,7 @@ static unsigned char ibm_architecture_vec[] = {
OV5_LPAR | OV5_SPLPAR | OV5_LARGE_PAGES | OV5_DRCONF_MEMORY |
OV5_DONATE_DEDICATE_CPU | OV5_MSI,
0,
- OV5_CMO,
+ OV5_CMO | OV5_XCMO,
OV5_TYPE1_AFFINITY,
0,
0,
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index f48446635c8..271ff6318ed 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -42,6 +42,7 @@
#include <asm/time.h>
#include <asm/mmu.h>
#include <asm/topology.h>
+#include <asm/pSeries_reconfig.h>
struct rtas_t rtas = {
.lock = __ARCH_SPIN_LOCK_UNLOCKED
@@ -731,6 +732,7 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w
atomic_set(&data->error, rc);
start_topology_update();
+ pSeries_coalesce_init();
if (wake_when_done) {
atomic_set(&data->done, 1);
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 6f0ed3aac77..39e6e0a7b2f 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -329,6 +329,8 @@ static long pSeries_lpar_hpte_insert(unsigned long hpte_group,
/* Make pHyp happy */
if ((rflags & _PAGE_NO_CACHE) & !(rflags & _PAGE_WRITETHRU))
hpte_r &= ~_PAGE_COHERENT;
+ if (firmware_has_feature(FW_FEATURE_XCMO) && !(hpte_r & HPTE_R_N))
+ flags |= H_COALESCE_CAND;
lpar_rc = plpar_pte_enter(flags, hpte_group, hpte_v, hpte_r, &slot);
if (unlikely(lpar_rc == H_PTEG_FULL)) {
@@ -771,3 +773,47 @@ out:
local_irq_restore(flags);
}
#endif
+
+/**
+ * h_get_mpp
+ * H_GET_MPP hcall returns info in 7 parms
+ */
+int h_get_mpp(struct hvcall_mpp_data *mpp_data)
+{
+ int rc;
+ unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
+
+ rc = plpar_hcall9(H_GET_MPP, retbuf);
+
+ mpp_data->entitled_mem = retbuf[0];
+ mpp_data->mapped_mem = retbuf[1];
+
+ mpp_data->group_num = (retbuf[2] >> 2 * 8) & 0xffff;
+ mpp_data->pool_num = retbuf[2] & 0xffff;
+
+ mpp_data->mem_weight = (retbuf[3] >> 7 * 8) & 0xff;
+ mpp_data->unallocated_mem_weight = (retbuf[3] >> 6 * 8) & 0xff;
+ mpp_data->unallocated_entitlement = retbuf[3] & 0xffffffffffff;
+
+ mpp_data->pool_size = retbuf[4];
+ mpp_data->loan_request = retbuf[5];
+ mpp_data->backing_mem = retbuf[6];
+
+ return rc;
+}
+EXPORT_SYMBOL(h_get_mpp);
+
+int h_get_mpp_x(struct hvcall_mpp_x_data *mpp_x_data)
+{
+ int rc;
+ unsigned long retbuf[PLPAR_HCALL9_BUFSIZE] = { 0 };
+
+ rc = plpar_hcall9(H_GET_MPP_X, retbuf);
+
+ mpp_x_data->coalesced_bytes = retbuf[0];
+ mpp_x_data->pool_coalesced_bytes = retbuf[1];
+ mpp_x_data->pool_purr_cycles = retbuf[2];
+ mpp_x_data->pool_spurr_cycles = retbuf[3];
+
+ return rc;
+}
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index ab73ad2ff59..1689adccc6d 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -405,6 +405,16 @@ static int pseries_set_xdabr(unsigned long dabr)
#define CMO_CHARACTERISTICS_TOKEN 44
#define CMO_MAXLENGTH 1026
+void pSeries_coalesce_init(void)
+{
+ struct hvcall_mpp_x_data mpp_x_data;
+
+ if (firmware_has_feature(FW_FEATURE_CMO) && !h_get_mpp_x(&mpp_x_data))
+ powerpc_firmware_features |= FW_FEATURE_XCMO;
+ else
+ powerpc_firmware_features &= ~FW_FEATURE_XCMO;
+}
+
/**
* fw_cmo_feature_init - FW_FEATURE_CMO is not stored in ibm,hypertas-functions,
* handle that here. (Stolen from parse_system_parameter_string)
@@ -474,6 +484,7 @@ void pSeries_cmo_feature_init(void)
pr_debug("CMO enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
CMO_SecPSP);
powerpc_firmware_features |= FW_FEATURE_CMO;
+ pSeries_coalesce_init();
} else
pr_debug("CMO not enabled, PrPSP=%d, SecPSP=%d\n", CMO_PrPSP,
CMO_SecPSP);