summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/cpuidle/cpuidle-powernv.c32
-rw-r--r--drivers/hwmon/ibmpowernv.c9
-rw-r--r--drivers/macintosh/via-pmu.c18
-rw-r--r--drivers/macintosh/windfarm_pm121.c2
-rw-r--r--drivers/macintosh/windfarm_pm81.c2
-rw-r--r--drivers/macintosh/windfarm_pm91.c2
-rw-r--r--drivers/misc/cxl/pci.c4
-rw-r--r--drivers/misc/cxl/sysfs.c16
-rw-r--r--drivers/misc/ocxl/context.c5
-rw-r--r--drivers/misc/ocxl/file.c80
-rw-r--r--drivers/misc/ocxl/link.c38
-rw-r--r--drivers/misc/ocxl/ocxl_internal.h1
-rw-r--r--drivers/tty/hvc/hvc_opal.c1
13 files changed, 180 insertions, 30 deletions
diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
index 1a8234e706bc..d29e4f041efe 100644
--- a/drivers/cpuidle/cpuidle-powernv.c
+++ b/drivers/cpuidle/cpuidle-powernv.c
@@ -43,9 +43,31 @@ struct stop_psscr_table {
static struct stop_psscr_table stop_psscr_table[CPUIDLE_STATE_MAX] __read_mostly;
-static u64 snooze_timeout __read_mostly;
+static u64 default_snooze_timeout __read_mostly;
static bool snooze_timeout_en __read_mostly;
+static u64 get_snooze_timeout(struct cpuidle_device *dev,
+ struct cpuidle_driver *drv,
+ int index)
+{
+ int i;
+
+ if (unlikely(!snooze_timeout_en))
+ return default_snooze_timeout;
+
+ for (i = index + 1; i < drv->state_count; i++) {
+ struct cpuidle_state *s = &drv->states[i];
+ struct cpuidle_state_usage *su = &dev->states_usage[i];
+
+ if (s->disabled || su->disable)
+ continue;
+
+ return s->target_residency * tb_ticks_per_usec;
+ }
+
+ return default_snooze_timeout;
+}
+
static int snooze_loop(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
@@ -56,7 +78,7 @@ static int snooze_loop(struct cpuidle_device *dev,
local_irq_enable();
- snooze_exit_time = get_tb() + snooze_timeout;
+ snooze_exit_time = get_tb() + get_snooze_timeout(dev, drv, index);
ppc64_runlatch_off();
HMT_very_low();
while (!need_resched()) {
@@ -465,11 +487,9 @@ static int powernv_idle_probe(void)
cpuidle_state_table = powernv_states;
/* Device tree can indicate more idle states */
max_idle_state = powernv_add_idle_states();
- if (max_idle_state > 1) {
+ default_snooze_timeout = TICK_USEC * tb_ticks_per_usec;
+ if (max_idle_state > 1)
snooze_timeout_en = true;
- snooze_timeout = powernv_states[1].target_residency *
- tb_ticks_per_usec;
- }
} else
return -ENODEV;
diff --git a/drivers/hwmon/ibmpowernv.c b/drivers/hwmon/ibmpowernv.c
index 5ccdd0b52650..0298745d46e4 100644
--- a/drivers/hwmon/ibmpowernv.c
+++ b/drivers/hwmon/ibmpowernv.c
@@ -51,6 +51,7 @@ enum sensors {
POWER_SUPPLY,
POWER_INPUT,
CURRENT,
+ ENERGY,
MAX_SENSOR_TYPE,
};
@@ -78,6 +79,7 @@ static struct sensor_group {
{ "in" },
{ "power" },
{ "curr" },
+ { "energy" },
};
struct sensor_data {
@@ -101,9 +103,10 @@ static ssize_t show_sensor(struct device *dev, struct device_attribute *devattr,
struct sensor_data *sdata = container_of(devattr, struct sensor_data,
dev_attr);
ssize_t ret;
- u32 x;
+ u64 x;
+
+ ret = opal_get_sensor_data_u64(sdata->id, &x);
- ret = opal_get_sensor_data(sdata->id, &x);
if (ret)
return ret;
@@ -114,7 +117,7 @@ static ssize_t show_sensor(struct device *dev, struct device_attribute *devattr,
else if (sdata->type == POWER_INPUT)
x *= 1000000;
- return sprintf(buf, "%u\n", x);
+ return sprintf(buf, "%llu\n", x);
}
static ssize_t show_label(struct device *dev, struct device_attribute *devattr,
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 6663893f41c4..25c1ce811053 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -274,7 +274,7 @@ int __init find_via_pmu(void)
u64 taddr;
const u32 *reg;
- if (via != 0)
+ if (via)
return 1;
vias = of_find_node_by_name(NULL, "via-pmu");
if (vias == NULL)
@@ -1115,7 +1115,7 @@ pmu_queue_request(struct adb_request *req)
req->complete = 0;
spin_lock_irqsave(&pmu_lock, flags);
- if (current_req != 0) {
+ if (current_req) {
last_req->next = req;
last_req = req;
} else {
@@ -1190,7 +1190,7 @@ pmu_start(void)
/* assert pmu_state == idle */
/* get the packet to send */
req = current_req;
- if (req == 0 || pmu_state != idle
+ if (!req || pmu_state != idle
|| (/*req->reply_expected && */req_awaiting_reply))
return;
@@ -1345,7 +1345,7 @@ next:
if ((1 << pirq) & PMU_INT_ADB) {
if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
struct adb_request *req = req_awaiting_reply;
- if (req == 0) {
+ if (!req) {
printk(KERN_ERR "PMU: extra ADB reply\n");
return;
}
@@ -1712,7 +1712,7 @@ pmu_shutdown(void)
int
pmu_present(void)
{
- return via != 0;
+ return via != NULL;
}
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
@@ -2044,7 +2044,7 @@ pmu_open(struct inode *inode, struct file *file)
unsigned long flags;
pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL);
- if (pp == 0)
+ if (!pp)
return -ENOMEM;
pp->rb_get = pp->rb_put = 0;
spin_lock_init(&pp->lock);
@@ -2070,7 +2070,7 @@ pmu_read(struct file *file, char __user *buf,
unsigned long flags;
int ret = 0;
- if (count < 1 || pp == 0)
+ if (count < 1 || !pp)
return -EINVAL;
if (!access_ok(VERIFY_WRITE, buf, count))
return -EFAULT;
@@ -2127,7 +2127,7 @@ pmu_fpoll(struct file *filp, poll_table *wait)
__poll_t mask = 0;
unsigned long flags;
- if (pp == 0)
+ if (!pp)
return 0;
poll_wait(filp, &pp->wait, wait);
spin_lock_irqsave(&pp->lock, flags);
@@ -2143,7 +2143,7 @@ pmu_release(struct inode *inode, struct file *file)
struct pmu_private *pp = file->private_data;
unsigned long flags;
- if (pp != 0) {
+ if (pp) {
file->private_data = NULL;
spin_lock_irqsave(&all_pvt_lock, flags);
list_del(&pp->list);
diff --git a/drivers/macintosh/windfarm_pm121.c b/drivers/macintosh/windfarm_pm121.c
index 4d72d8f58cb6..97634e030991 100644
--- a/drivers/macintosh/windfarm_pm121.c
+++ b/drivers/macintosh/windfarm_pm121.c
@@ -710,7 +710,7 @@ static void pm121_create_cpu_fans(void)
wf_cpu_pid_init(&pm121_cpu_state->pid, &pid_param);
pr_debug("pm121: CPU Fan control initialized.\n");
- pr_debug(" ttarged=%d.%03d, tmax=%d.%03d, min=%d RPM, max=%d RPM,\n",
+ pr_debug(" ttarget=%d.%03d, tmax=%d.%03d, min=%d RPM, max=%d RPM,\n",
FIX32TOPRINT(pid_param.ttarget), FIX32TOPRINT(pid_param.tmax),
pid_param.min, pid_param.max);
diff --git a/drivers/macintosh/windfarm_pm81.c b/drivers/macintosh/windfarm_pm81.c
index d9ea45581b9e..346c91744442 100644
--- a/drivers/macintosh/windfarm_pm81.c
+++ b/drivers/macintosh/windfarm_pm81.c
@@ -455,7 +455,7 @@ static void wf_smu_create_cpu_fans(void)
wf_cpu_pid_init(&wf_smu_cpu_fans->pid, &pid_param);
DBG("wf: CPU Fan control initialized.\n");
- DBG(" ttarged=%d.%03d, tmax=%d.%03d, min=%d RPM, max=%d RPM\n",
+ DBG(" ttarget=%d.%03d, tmax=%d.%03d, min=%d RPM, max=%d RPM\n",
FIX32TOPRINT(pid_param.ttarget), FIX32TOPRINT(pid_param.tmax),
pid_param.min, pid_param.max);
diff --git a/drivers/macintosh/windfarm_pm91.c b/drivers/macintosh/windfarm_pm91.c
index 7fd73dcb2b0a..a8a47c62a74b 100644
--- a/drivers/macintosh/windfarm_pm91.c
+++ b/drivers/macintosh/windfarm_pm91.c
@@ -200,7 +200,7 @@ static void wf_smu_create_cpu_fans(void)
wf_cpu_pid_init(&wf_smu_cpu_fans->pid, &pid_param);
DBG("wf: CPU Fan control initialized.\n");
- DBG(" ttarged=%d.%03d, tmax=%d.%03d, min=%d RPM, max=%d RPM\n",
+ DBG(" ttarget=%d.%03d, tmax=%d.%03d, min=%d RPM, max=%d RPM\n",
FIX32TOPRINT(pid_param.ttarget), FIX32TOPRINT(pid_param.tmax),
pid_param.min, pid_param.max);
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index 4d6736f9d463..429d6de1dde7 100644
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -514,9 +514,9 @@ static int init_implementation_adapter_regs_psl9(struct cxl *adapter,
cxl_p1_write(adapter, CXL_PSL9_FIR_CNTL, psl_fircntl);
/* Setup the PSL to transmit packets on the PCIe before the
- * CAPP is enabled
+ * CAPP is enabled. Make sure that CAPP virtual machines are disabled
*/
- cxl_p1_write(adapter, CXL_PSL9_DSNDCTL, 0x0001001000002A10ULL);
+ cxl_p1_write(adapter, CXL_PSL9_DSNDCTL, 0x0001001000012A10ULL);
/*
* A response to an ASB_Notify request is returned by the
diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c
index 4b5a4c5d3c01..629e2e156412 100644
--- a/drivers/misc/cxl/sysfs.c
+++ b/drivers/misc/cxl/sysfs.c
@@ -353,12 +353,20 @@ static ssize_t prefault_mode_store(struct device *device,
struct cxl_afu *afu = to_cxl_afu(device);
enum prefault_modes mode = -1;
- if (!strncmp(buf, "work_element_descriptor", 23))
- mode = CXL_PREFAULT_WED;
- if (!strncmp(buf, "all", 3))
- mode = CXL_PREFAULT_ALL;
if (!strncmp(buf, "none", 4))
mode = CXL_PREFAULT_NONE;
+ else {
+ if (!radix_enabled()) {
+
+ /* only allowed when not in radix mode */
+ if (!strncmp(buf, "work_element_descriptor", 23))
+ mode = CXL_PREFAULT_WED;
+ if (!strncmp(buf, "all", 3))
+ mode = CXL_PREFAULT_ALL;
+ } else {
+ dev_err(device, "Cannot prefault with radix enabled\n");
+ }
+ }
if (mode == -1)
return -EINVAL;
diff --git a/drivers/misc/ocxl/context.c b/drivers/misc/ocxl/context.c
index 909e8807824a..95f74623113e 100644
--- a/drivers/misc/ocxl/context.c
+++ b/drivers/misc/ocxl/context.c
@@ -34,6 +34,8 @@ int ocxl_context_init(struct ocxl_context *ctx, struct ocxl_afu *afu,
mutex_init(&ctx->xsl_error_lock);
mutex_init(&ctx->irq_lock);
idr_init(&ctx->irq_idr);
+ ctx->tidr = 0;
+
/*
* Keep a reference on the AFU to make sure it's valid for the
* duration of the life of the context
@@ -65,6 +67,7 @@ int ocxl_context_attach(struct ocxl_context *ctx, u64 amr)
{
int rc;
+ // Locks both status & tidr
mutex_lock(&ctx->status_mutex);
if (ctx->status != OPENED) {
rc = -EIO;
@@ -72,7 +75,7 @@ int ocxl_context_attach(struct ocxl_context *ctx, u64 amr)
}
rc = ocxl_link_add_pe(ctx->afu->fn->link, ctx->pasid,
- current->mm->context.id, 0, amr, current->mm,
+ current->mm->context.id, ctx->tidr, amr, current->mm,
xsl_fault_error, ctx);
if (rc)
goto out;
diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c
index 038509e5d031..e6a607488f8a 100644
--- a/drivers/misc/ocxl/file.c
+++ b/drivers/misc/ocxl/file.c
@@ -5,6 +5,8 @@
#include <linux/sched/signal.h>
#include <linux/uaccess.h>
#include <uapi/misc/ocxl.h>
+#include <asm/reg.h>
+#include <asm/switch_to.h>
#include "ocxl_internal.h"
@@ -123,11 +125,77 @@ static long afu_ioctl_get_metadata(struct ocxl_context *ctx,
return 0;
}
+#ifdef CONFIG_PPC64
+static long afu_ioctl_enable_p9_wait(struct ocxl_context *ctx,
+ struct ocxl_ioctl_p9_wait __user *uarg)
+{
+ struct ocxl_ioctl_p9_wait arg;
+
+ memset(&arg, 0, sizeof(arg));
+
+ if (cpu_has_feature(CPU_FTR_P9_TIDR)) {
+ enum ocxl_context_status status;
+
+ // Locks both status & tidr
+ mutex_lock(&ctx->status_mutex);
+ if (!ctx->tidr) {
+ if (set_thread_tidr(current)) {
+ mutex_unlock(&ctx->status_mutex);
+ return -ENOENT;
+ }
+
+ ctx->tidr = current->thread.tidr;
+ }
+
+ status = ctx->status;
+ mutex_unlock(&ctx->status_mutex);
+
+ if (status == ATTACHED) {
+ int rc;
+ struct link *link = ctx->afu->fn->link;
+
+ rc = ocxl_link_update_pe(link, ctx->pasid, ctx->tidr);
+ if (rc)
+ return rc;
+ }
+
+ arg.thread_id = ctx->tidr;
+ } else
+ return -ENOENT;
+
+ if (copy_to_user(uarg, &arg, sizeof(arg)))
+ return -EFAULT;
+
+ return 0;
+}
+#endif
+
+
+static long afu_ioctl_get_features(struct ocxl_context *ctx,
+ struct ocxl_ioctl_features __user *uarg)
+{
+ struct ocxl_ioctl_features arg;
+
+ memset(&arg, 0, sizeof(arg));
+
+#ifdef CONFIG_PPC64
+ if (cpu_has_feature(CPU_FTR_P9_TIDR))
+ arg.flags[0] |= OCXL_IOCTL_FEATURES_FLAGS0_P9_WAIT;
+#endif
+
+ if (copy_to_user(uarg, &arg, sizeof(arg)))
+ return -EFAULT;
+
+ return 0;
+}
+
#define CMD_STR(x) (x == OCXL_IOCTL_ATTACH ? "ATTACH" : \
x == OCXL_IOCTL_IRQ_ALLOC ? "IRQ_ALLOC" : \
x == OCXL_IOCTL_IRQ_FREE ? "IRQ_FREE" : \
x == OCXL_IOCTL_IRQ_SET_FD ? "IRQ_SET_FD" : \
x == OCXL_IOCTL_GET_METADATA ? "GET_METADATA" : \
+ x == OCXL_IOCTL_ENABLE_P9_WAIT ? "ENABLE_P9_WAIT" : \
+ x == OCXL_IOCTL_GET_FEATURES ? "GET_FEATURES" : \
"UNKNOWN")
static long afu_ioctl(struct file *file, unsigned int cmd,
@@ -186,6 +254,18 @@ static long afu_ioctl(struct file *file, unsigned int cmd,
(struct ocxl_ioctl_metadata __user *) args);
break;
+#ifdef CONFIG_PPC64
+ case OCXL_IOCTL_ENABLE_P9_WAIT:
+ rc = afu_ioctl_enable_p9_wait(ctx,
+ (struct ocxl_ioctl_p9_wait __user *) args);
+ break;
+#endif
+
+ case OCXL_IOCTL_GET_FEATURES:
+ rc = afu_ioctl_get_features(ctx,
+ (struct ocxl_ioctl_features __user *) args);
+ break;
+
default:
rc = -EINVAL;
}
diff --git a/drivers/misc/ocxl/link.c b/drivers/misc/ocxl/link.c
index f30790582dc0..88876ae8f330 100644
--- a/drivers/misc/ocxl/link.c
+++ b/drivers/misc/ocxl/link.c
@@ -544,6 +544,42 @@ unlock:
}
EXPORT_SYMBOL_GPL(ocxl_link_add_pe);
+int ocxl_link_update_pe(void *link_handle, int pasid, __u16 tid)
+{
+ struct link *link = (struct link *) link_handle;
+ struct spa *spa = link->spa;
+ struct ocxl_process_element *pe;
+ int pe_handle, rc;
+
+ if (pasid > SPA_PASID_MAX)
+ return -EINVAL;
+
+ pe_handle = pasid & SPA_PE_MASK;
+ pe = spa->spa_mem + pe_handle;
+
+ mutex_lock(&spa->spa_lock);
+
+ pe->tid = tid;
+
+ /*
+ * The barrier makes sure the PE is updated
+ * before we clear the NPU context cache below, so that the
+ * old PE cannot be reloaded erroneously.
+ */
+ mb();
+
+ /*
+ * hook to platform code
+ * On powerpc, the entry needs to be cleared from the context
+ * cache of the NPU.
+ */
+ rc = pnv_ocxl_spa_remove_pe_from_cache(link->platform_data, pe_handle);
+ WARN_ON(rc);
+
+ mutex_unlock(&spa->spa_lock);
+ return rc;
+}
+
int ocxl_link_remove_pe(void *link_handle, int pasid)
{
struct link *link = (struct link *) link_handle;
@@ -599,7 +635,7 @@ int ocxl_link_remove_pe(void *link_handle, int pasid)
* On powerpc, the entry needs to be cleared from the context
* cache of the NPU.
*/
- rc = pnv_ocxl_spa_remove_pe(link->platform_data, pe_handle);
+ rc = pnv_ocxl_spa_remove_pe_from_cache(link->platform_data, pe_handle);
WARN_ON(rc);
pe_data = radix_tree_delete(&spa->pe_tree, pe_handle);
diff --git a/drivers/misc/ocxl/ocxl_internal.h b/drivers/misc/ocxl/ocxl_internal.h
index 5d421824afd9..a32f2151029f 100644
--- a/drivers/misc/ocxl/ocxl_internal.h
+++ b/drivers/misc/ocxl/ocxl_internal.h
@@ -77,6 +77,7 @@ struct ocxl_context {
struct ocxl_xsl_error xsl_error;
struct mutex irq_lock;
struct idr irq_idr;
+ u16 tidr; // Thread ID used for P9 wait implementation
};
struct ocxl_process_element {
diff --git a/drivers/tty/hvc/hvc_opal.c b/drivers/tty/hvc/hvc_opal.c
index 2ed07ca6389e..9645c0062a90 100644
--- a/drivers/tty/hvc/hvc_opal.c
+++ b/drivers/tty/hvc/hvc_opal.c
@@ -318,7 +318,6 @@ static void udbg_init_opal_common(void)
udbg_putc = udbg_opal_putc;
udbg_getc = udbg_opal_getc;
udbg_getc_poll = udbg_opal_getc_poll;
- tb_ticks_per_usec = 0x200; /* Make udelay not suck */
}
void __init hvc_opal_init_early(void)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-08 00:24:29 +0000