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-rw-r--r--drivers/dma/idxd/device.c88
-rw-r--r--drivers/dma/idxd/idxd.h6
-rw-r--r--drivers/dma/idxd/irq.c4
-rw-r--r--drivers/dma/idxd/sysfs.c22
4 files changed, 74 insertions, 46 deletions
diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
index 420b93fe5feb..928c2c8817f0 100644
--- a/drivers/dma/idxd/device.c
+++ b/drivers/dma/idxd/device.c
@@ -15,6 +15,8 @@
static void idxd_cmd_exec(struct idxd_device *idxd, int cmd_code, u32 operand,
u32 *status);
+static void idxd_device_wqs_clear_state(struct idxd_device *idxd);
+static void idxd_wq_disable_cleanup(struct idxd_wq *wq);
/* Interrupt control bits */
void idxd_mask_msix_vector(struct idxd_device *idxd, int vec_id)
@@ -234,7 +236,7 @@ int idxd_wq_enable(struct idxd_wq *wq)
return 0;
}
-int idxd_wq_disable(struct idxd_wq *wq)
+int idxd_wq_disable(struct idxd_wq *wq, bool reset_config)
{
struct idxd_device *idxd = wq->idxd;
struct device *dev = &idxd->pdev->dev;
@@ -255,6 +257,8 @@ int idxd_wq_disable(struct idxd_wq *wq)
return -ENXIO;
}
+ if (reset_config)
+ idxd_wq_disable_cleanup(wq);
wq->state = IDXD_WQ_DISABLED;
dev_dbg(dev, "WQ %d disabled\n", wq->id);
return 0;
@@ -289,6 +293,7 @@ void idxd_wq_reset(struct idxd_wq *wq)
operand = BIT(wq->id % 16) | ((wq->id / 16) << 16);
idxd_cmd_exec(idxd, IDXD_CMD_RESET_WQ, operand, NULL);
+ idxd_wq_disable_cleanup(wq);
wq->state = IDXD_WQ_DISABLED;
}
@@ -337,7 +342,7 @@ int idxd_wq_set_pasid(struct idxd_wq *wq, int pasid)
unsigned int offset;
unsigned long flags;
- rc = idxd_wq_disable(wq);
+ rc = idxd_wq_disable(wq, false);
if (rc < 0)
return rc;
@@ -364,7 +369,7 @@ int idxd_wq_disable_pasid(struct idxd_wq *wq)
unsigned int offset;
unsigned long flags;
- rc = idxd_wq_disable(wq);
+ rc = idxd_wq_disable(wq, false);
if (rc < 0)
return rc;
@@ -383,11 +388,11 @@ int idxd_wq_disable_pasid(struct idxd_wq *wq)
return 0;
}
-void idxd_wq_disable_cleanup(struct idxd_wq *wq)
+static void idxd_wq_disable_cleanup(struct idxd_wq *wq)
{
struct idxd_device *idxd = wq->idxd;
- lockdep_assert_held(&idxd->dev_lock);
+ lockdep_assert_held(&wq->wq_lock);
memset(wq->wqcfg, 0, idxd->wqcfg_size);
wq->type = IDXD_WQT_NONE;
wq->size = 0;
@@ -548,22 +553,6 @@ int idxd_device_enable(struct idxd_device *idxd)
return 0;
}
-void idxd_device_wqs_clear_state(struct idxd_device *idxd)
-{
- int i;
-
- lockdep_assert_held(&idxd->dev_lock);
-
- for (i = 0; i < idxd->max_wqs; i++) {
- struct idxd_wq *wq = idxd->wqs[i];
-
- if (wq->state == IDXD_WQ_ENABLED) {
- idxd_wq_disable_cleanup(wq);
- wq->state = IDXD_WQ_DISABLED;
- }
- }
-}
-
int idxd_device_disable(struct idxd_device *idxd)
{
struct device *dev = &idxd->pdev->dev;
@@ -585,7 +574,7 @@ int idxd_device_disable(struct idxd_device *idxd)
}
spin_lock_irqsave(&idxd->dev_lock, flags);
- idxd_device_wqs_clear_state(idxd);
+ idxd_device_clear_state(idxd);
idxd->state = IDXD_DEV_CONF_READY;
spin_unlock_irqrestore(&idxd->dev_lock, flags);
return 0;
@@ -597,7 +586,7 @@ void idxd_device_reset(struct idxd_device *idxd)
idxd_cmd_exec(idxd, IDXD_CMD_RESET_DEVICE, 0, NULL);
spin_lock_irqsave(&idxd->dev_lock, flags);
- idxd_device_wqs_clear_state(idxd);
+ idxd_device_clear_state(idxd);
idxd->state = IDXD_DEV_CONF_READY;
spin_unlock_irqrestore(&idxd->dev_lock, flags);
}
@@ -685,6 +674,59 @@ int idxd_device_release_int_handle(struct idxd_device *idxd, int handle,
}
/* Device configuration bits */
+static void idxd_engines_clear_state(struct idxd_device *idxd)
+{
+ struct idxd_engine *engine;
+ int i;
+
+ lockdep_assert_held(&idxd->dev_lock);
+ for (i = 0; i < idxd->max_engines; i++) {
+ engine = idxd->engines[i];
+ engine->group = NULL;
+ }
+}
+
+static void idxd_groups_clear_state(struct idxd_device *idxd)
+{
+ struct idxd_group *group;
+ int i;
+
+ lockdep_assert_held(&idxd->dev_lock);
+ for (i = 0; i < idxd->max_groups; i++) {
+ group = idxd->groups[i];
+ memset(&group->grpcfg, 0, sizeof(group->grpcfg));
+ group->num_engines = 0;
+ group->num_wqs = 0;
+ group->use_token_limit = false;
+ group->tokens_allowed = 0;
+ group->tokens_reserved = 0;
+ group->tc_a = -1;
+ group->tc_b = -1;
+ }
+}
+
+static void idxd_device_wqs_clear_state(struct idxd_device *idxd)
+{
+ int i;
+
+ lockdep_assert_held(&idxd->dev_lock);
+ for (i = 0; i < idxd->max_wqs; i++) {
+ struct idxd_wq *wq = idxd->wqs[i];
+
+ if (wq->state == IDXD_WQ_ENABLED) {
+ idxd_wq_disable_cleanup(wq);
+ wq->state = IDXD_WQ_DISABLED;
+ }
+ }
+}
+
+void idxd_device_clear_state(struct idxd_device *idxd)
+{
+ idxd_groups_clear_state(idxd);
+ idxd_engines_clear_state(idxd);
+ idxd_device_wqs_clear_state(idxd);
+}
+
void idxd_msix_perm_setup(struct idxd_device *idxd)
{
union msix_perm mperm;
diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h
index 26482c7d4c3a..1f0991dec679 100644
--- a/drivers/dma/idxd/idxd.h
+++ b/drivers/dma/idxd/idxd.h
@@ -420,9 +420,8 @@ int idxd_device_init_reset(struct idxd_device *idxd);
int idxd_device_enable(struct idxd_device *idxd);
int idxd_device_disable(struct idxd_device *idxd);
void idxd_device_reset(struct idxd_device *idxd);
-void idxd_device_cleanup(struct idxd_device *idxd);
+void idxd_device_clear_state(struct idxd_device *idxd);
int idxd_device_config(struct idxd_device *idxd);
-void idxd_device_wqs_clear_state(struct idxd_device *idxd);
void idxd_device_drain_pasid(struct idxd_device *idxd, int pasid);
int idxd_device_load_config(struct idxd_device *idxd);
int idxd_device_request_int_handle(struct idxd_device *idxd, int idx, int *handle,
@@ -435,12 +434,11 @@ void idxd_wqs_unmap_portal(struct idxd_device *idxd);
int idxd_wq_alloc_resources(struct idxd_wq *wq);
void idxd_wq_free_resources(struct idxd_wq *wq);
int idxd_wq_enable(struct idxd_wq *wq);
-int idxd_wq_disable(struct idxd_wq *wq);
+int idxd_wq_disable(struct idxd_wq *wq, bool reset_config);
void idxd_wq_drain(struct idxd_wq *wq);
void idxd_wq_reset(struct idxd_wq *wq);
int idxd_wq_map_portal(struct idxd_wq *wq);
void idxd_wq_unmap_portal(struct idxd_wq *wq);
-void idxd_wq_disable_cleanup(struct idxd_wq *wq);
int idxd_wq_set_pasid(struct idxd_wq *wq, int pasid);
int idxd_wq_disable_pasid(struct idxd_wq *wq);
void idxd_wq_quiesce(struct idxd_wq *wq);
diff --git a/drivers/dma/idxd/irq.c b/drivers/dma/idxd/irq.c
index ae68e1e5487a..7a2cf0512501 100644
--- a/drivers/dma/idxd/irq.c
+++ b/drivers/dma/idxd/irq.c
@@ -59,7 +59,7 @@ static void idxd_device_reinit(struct work_struct *work)
return;
out:
- idxd_device_wqs_clear_state(idxd);
+ idxd_device_clear_state(idxd);
}
static void idxd_device_fault_work(struct work_struct *work)
@@ -192,7 +192,7 @@ static int process_misc_interrupts(struct idxd_device *idxd, u32 cause)
spin_lock_bh(&idxd->dev_lock);
idxd_wqs_quiesce(idxd);
idxd_wqs_unmap_portal(idxd);
- idxd_device_wqs_clear_state(idxd);
+ idxd_device_clear_state(idxd);
dev_err(&idxd->pdev->dev,
"idxd halted, need %s.\n",
gensts.reset_type == IDXD_DEVICE_RESET_FLR ?
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 0460d58e3941..71cd73fefec6 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -129,7 +129,7 @@ static int enable_wq(struct idxd_wq *wq)
rc = idxd_wq_map_portal(wq);
if (rc < 0) {
dev_warn(dev, "wq portal mapping failed: %d\n", rc);
- rc = idxd_wq_disable(wq);
+ rc = idxd_wq_disable(wq, false);
if (rc < 0)
dev_warn(dev, "IDXD wq disable failed\n");
mutex_unlock(&wq->wq_lock);
@@ -262,8 +262,6 @@ static void disable_wq(struct idxd_wq *wq)
static int idxd_config_bus_remove(struct device *dev)
{
- int rc;
-
dev_dbg(dev, "%s called for %s\n", __func__, dev_name(dev));
/* disable workqueue here */
@@ -288,22 +286,12 @@ static int idxd_config_bus_remove(struct device *dev)
}
idxd_unregister_dma_device(idxd);
- rc = idxd_device_disable(idxd);
- if (test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags)) {
- for (i = 0; i < idxd->max_wqs; i++) {
- struct idxd_wq *wq = idxd->wqs[i];
-
- mutex_lock(&wq->wq_lock);
- idxd_wq_disable_cleanup(wq);
- mutex_unlock(&wq->wq_lock);
- }
- }
+ idxd_device_disable(idxd);
+ if (test_bit(IDXD_FLAG_CONFIGURABLE, &idxd->flags))
+ idxd_device_reset(idxd);
module_put(THIS_MODULE);
- if (rc < 0)
- dev_warn(dev, "Device disable failed\n");
- else
- dev_info(dev, "Device %s disabled\n", dev_name(dev));
+ dev_info(dev, "Device %s disabled\n", dev_name(dev));
}
return 0;
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-17 14:28:01 +0300