4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Stewart Smith <stewart@xxxxxxxxxxxxxxxxxx>
commit e4d54f71d29997344b4c4c8d47708240f9f23a5c upstream.
Long ago, only in the lab, there was OPALv1 and OPALv2. Now there is
just OPALv3, with nobody ever expecting anything on pre-OPALv3 to
be cared about or supported by mainline kernels.
So, let's remove FW_FEATURE_OPALv3 and instead use FW_FEATURE_OPAL
exclusively.
Signed-off-by: Stewart Smith <stewart@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Mike Galbraith <mgalbraith@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/firmware.h | 3 -
arch/powerpc/platforms/powernv/eeh-powernv.c | 4 -
arch/powerpc/platforms/powernv/idle.c | 2
arch/powerpc/platforms/powernv/opal-xscom.c | 2
arch/powerpc/platforms/powernv/opal.c | 25 ++++-----
arch/powerpc/platforms/powernv/pci-ioda.c | 2
arch/powerpc/platforms/powernv/setup.c | 8 +-
arch/powerpc/platforms/powernv/smp.c | 74 +++++++++++----------------
drivers/cpufreq/powernv-cpufreq.c | 2
drivers/cpuidle/cpuidle-powernv.c | 2
10 files changed, 54 insertions(+), 70 deletions(-)
--- a/arch/powerpc/include/asm/firmware.h
+++ b/arch/powerpc/include/asm/firmware.h
@@ -51,7 +51,6 @@
#define FW_FEATURE_BEST_ENERGY ASM_CONST(0x0000000080000000)
#define FW_FEATURE_TYPE1_AFFINITY ASM_CONST(0x0000000100000000)
#define FW_FEATURE_PRRN ASM_CONST(0x0000000200000000)
-#define FW_FEATURE_OPALv3 ASM_CONST(0x0000000400000000)
#ifndef __ASSEMBLY__
@@ -69,7 +68,7 @@ enum {
FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY |
FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN,
FW_FEATURE_PSERIES_ALWAYS = 0,
- FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL | FW_FEATURE_OPALv3,
+ FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL,
FW_FEATURE_POWERNV_ALWAYS = 0,
FW_FEATURE_PS3_POSSIBLE = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
FW_FEATURE_PS3_ALWAYS = FW_FEATURE_LPAR | FW_FEATURE_PS3_LV1,
--- a/arch/powerpc/platforms/powernv/eeh-powernv.c
+++ b/arch/powerpc/platforms/powernv/eeh-powernv.c
@@ -48,8 +48,8 @@ static int pnv_eeh_init(void)
struct pci_controller *hose;
struct pnv_phb *phb;
- if (!firmware_has_feature(FW_FEATURE_OPALv3)) {
- pr_warn("%s: OPALv3 is required !\n",
+ if (!firmware_has_feature(FW_FEATURE_OPAL)) {
+ pr_warn("%s: OPAL is required !\n",
__func__);
return -EINVAL;
}
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -242,7 +242,7 @@ static int __init pnv_init_idle_states(v
if (cpuidle_disable != IDLE_NO_OVERRIDE)
goto out;
- if (!firmware_has_feature(FW_FEATURE_OPALv3))
+ if (!firmware_has_feature(FW_FEATURE_OPAL))
goto out;
power_mgt = of_find_node_by_path("/ibm,opal/power-mgt");
--- a/arch/powerpc/platforms/powernv/opal-xscom.c
+++ b/arch/powerpc/platforms/powernv/opal-xscom.c
@@ -126,7 +126,7 @@ static const struct scom_controller opal
static int opal_xscom_init(void)
{
- if (firmware_has_feature(FW_FEATURE_OPALv3))
+ if (firmware_has_feature(FW_FEATURE_OPAL))
scom_init(&opal_scom_controller);
return 0;
}
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -98,10 +98,9 @@ int __init early_init_dt_scan_opal(unsig
pr_debug("OPAL Entry = 0x%llx (sizep=%p runtimesz=%d)\n",
opal.size, sizep, runtimesz);
- powerpc_firmware_features |= FW_FEATURE_OPAL;
if (of_flat_dt_is_compatible(node, "ibm,opal-v3")) {
- powerpc_firmware_features |= FW_FEATURE_OPALv3;
- pr_info("OPAL V3 detected !\n");
+ powerpc_firmware_features |= FW_FEATURE_OPAL;
+ pr_info("OPAL detected !\n");
} else {
panic("OPAL != V3 detected, no longer supported.\n");
}
@@ -348,17 +347,15 @@ int opal_put_chars(uint32_t vtermno, con
* enough room and be done with it
*/
spin_lock_irqsave(&opal_write_lock, flags);
- if (firmware_has_feature(FW_FEATURE_OPALv3)) {
- rc = opal_console_write_buffer_space(vtermno, &olen);
- len = be64_to_cpu(olen);
- if (rc || len < total_len) {
- spin_unlock_irqrestore(&opal_write_lock, flags);
- /* Closed -> drop characters */
- if (rc)
- return total_len;
- opal_poll_events(NULL);
- return -EAGAIN;
- }
+ rc = opal_console_write_buffer_space(vtermno, &olen);
+ len = be64_to_cpu(olen);
+ if (rc || len < total_len) {
+ spin_unlock_irqrestore(&opal_write_lock, flags);
+ /* Closed -> drop characters */
+ if (rc)
+ return total_len;
+ opal_poll_events(NULL);
+ return -EAGAIN;
}
/* We still try to handle partial completions, though they
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -344,7 +344,7 @@ static void __init pnv_ioda_parse_m64_wi
return;
}
- if (!firmware_has_feature(FW_FEATURE_OPALv3)) {
+ if (!firmware_has_feature(FW_FEATURE_OPAL)) {
pr_info(" Firmware too old to support M64 window\n");
return;
}
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -140,8 +140,8 @@ static void pnv_show_cpuinfo(struct seq_
if (root)
model = of_get_property(root, "model", NULL);
seq_printf(m, "machine\t\t: PowerNV %s\n", model);
- if (firmware_has_feature(FW_FEATURE_OPALv3))
- seq_printf(m, "firmware\t: OPAL v3\n");
+ if (firmware_has_feature(FW_FEATURE_OPAL))
+ seq_printf(m, "firmware\t: OPAL\n");
else
seq_printf(m, "firmware\t: BML\n");
of_node_put(root);
@@ -270,9 +270,9 @@ static void pnv_kexec_cpu_down(int crash
{
xics_kexec_teardown_cpu(secondary);
- /* On OPAL v3, we return all CPUs to firmware */
+ /* On OPAL, we return all CPUs to firmware */
- if (!firmware_has_feature(FW_FEATURE_OPALv3))
+ if (!firmware_has_feature(FW_FEATURE_OPAL))
return;
if (secondary) {
--- a/arch/powerpc/platforms/powernv/smp.c
+++ b/arch/powerpc/platforms/powernv/smp.c
@@ -61,14 +61,15 @@ static int pnv_smp_kick_cpu(int nr)
unsigned long start_here =
__pa(ppc_function_entry(generic_secondary_smp_init));
long rc;
+ uint8_t status;
BUG_ON(nr < 0 || nr >= NR_CPUS);
/*
- * If we already started or OPALv3 is not supported, we just
+ * If we already started or OPAL is not supported, we just
* kick the CPU via the PACA
*/
- if (paca[nr].cpu_start || !firmware_has_feature(FW_FEATURE_OPALv3))
+ if (paca[nr].cpu_start || !firmware_has_feature(FW_FEATURE_OPAL))
goto kick;
/*
@@ -77,55 +78,42 @@ static int pnv_smp_kick_cpu(int nr)
* first time. OPAL v3 allows us to query OPAL to know if it
* has the CPUs, so we do that
*/
- if (firmware_has_feature(FW_FEATURE_OPALv3)) {
- uint8_t status;
-
- rc = opal_query_cpu_status(pcpu, &status);
- if (rc != OPAL_SUCCESS) {
- pr_warn("OPAL Error %ld querying CPU %d state\n",
- rc, nr);
- return -ENODEV;
- }
+ rc = opal_query_cpu_status(pcpu, &status);
+ if (rc != OPAL_SUCCESS) {
+ pr_warn("OPAL Error %ld querying CPU %d state\n", rc, nr);
+ return -ENODEV;
+ }
- /*
- * Already started, just kick it, probably coming from
- * kexec and spinning
- */
- if (status == OPAL_THREAD_STARTED)
- goto kick;
+ /*
+ * Already started, just kick it, probably coming from
+ * kexec and spinning
+ */
+ if (status == OPAL_THREAD_STARTED)
+ goto kick;
- /*
- * Available/inactive, let's kick it
- */
- if (status == OPAL_THREAD_INACTIVE) {
- pr_devel("OPAL: Starting CPU %d (HW 0x%x)...\n",
- nr, pcpu);
- rc = opal_start_cpu(pcpu, start_here);
- if (rc != OPAL_SUCCESS) {
- pr_warn("OPAL Error %ld starting CPU %d\n",
- rc, nr);
- return -ENODEV;
- }
- } else {
- /*
- * An unavailable CPU (or any other unknown status)
- * shouldn't be started. It should also
- * not be in the possible map but currently it can
- * happen
- */
- pr_devel("OPAL: CPU %d (HW 0x%x) is unavailable"
- " (status %d)...\n", nr, pcpu, status);
+ /*
+ * Available/inactive, let's kick it
+ */
+ if (status == OPAL_THREAD_INACTIVE) {
+ pr_devel("OPAL: Starting CPU %d (HW 0x%x)...\n", nr, pcpu);
+ rc = opal_start_cpu(pcpu, start_here);
+ if (rc != OPAL_SUCCESS) {
+ pr_warn("OPAL Error %ld starting CPU %d\n", rc, nr);
return -ENODEV;
}
} else {
/*
- * On OPAL v2, we just kick it and hope for the best,
- * we must not test the error from opal_start_cpu() or
- * we would fail to get CPUs from kexec.
+ * An unavailable CPU (or any other unknown status)
+ * shouldn't be started. It should also
+ * not be in the possible map but currently it can
+ * happen
*/
- opal_start_cpu(pcpu, start_here);
+ pr_devel("OPAL: CPU %d (HW 0x%x) is unavailable"
+ " (status %d)...\n", nr, pcpu, status);
+ return -ENODEV;
}
- kick:
+
+kick:
return smp_generic_kick_cpu(nr);
}
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -592,7 +592,7 @@ static int __init powernv_cpufreq_init(v
int rc = 0;
/* Don't probe on pseries (guest) platforms */
- if (!firmware_has_feature(FW_FEATURE_OPALv3))
+ if (!firmware_has_feature(FW_FEATURE_OPAL))
return -ENODEV;
/* Discover pstates from device tree and init */
--- a/drivers/cpuidle/cpuidle-powernv.c
+++ b/drivers/cpuidle/cpuidle-powernv.c
@@ -282,7 +282,7 @@ static int powernv_idle_probe(void)
if (cpuidle_disable != IDLE_NO_OVERRIDE)
return -ENODEV;
- if (firmware_has_feature(FW_FEATURE_OPALv3)) {
+ if (firmware_has_feature(FW_FEATURE_OPAL)) {
cpuidle_state_table = powernv_states;
/* Device tree can indicate more idle states */
max_idle_state = powernv_add_idle_states();
