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-rw-r--r--drivers/hwtracing/coresight/coresight-core.c116
-rw-r--r--drivers/hwtracing/coresight/coresight-etb10.c10
-rw-r--r--drivers/hwtracing/coresight/coresight-funnel.c26
-rw-r--r--drivers/hwtracing/coresight/coresight-platform.c109
-rw-r--r--drivers/hwtracing/coresight/coresight-replicator.c23
-rw-r--r--drivers/hwtracing/coresight/coresight-tmc-etf.c24
-rw-r--r--drivers/hwtracing/coresight/coresight-tmc-etr.c12
-rw-r--r--drivers/hwtracing/coresight/coresight-tpda.c23
-rw-r--r--drivers/hwtracing/coresight/coresight-tpiu.c4
-rw-r--r--drivers/hwtracing/coresight/ultrasoc-smb.c8
-rw-r--r--include/linux/coresight.h14
11 files changed, 126 insertions, 243 deletions
diff --git a/drivers/hwtracing/coresight/coresight-core.c b/drivers/hwtracing/coresight/coresight-core.c
index a0a0ea2c626b..939b7fb751b5 100644
--- a/drivers/hwtracing/coresight/coresight-core.c
+++ b/drivers/hwtracing/coresight/coresight-core.c
@@ -112,40 +112,24 @@ struct coresight_device *coresight_get_percpu_sink(int cpu)
}
EXPORT_SYMBOL_GPL(coresight_get_percpu_sink);
-static int coresight_find_link_inport(struct coresight_device *csdev,
- struct coresight_device *parent)
+static struct coresight_connection *
+coresight_find_out_connection(struct coresight_device *src_dev,
+ struct coresight_device *dest_dev)
{
int i;
struct coresight_connection *conn;
- for (i = 0; i < parent->pdata->nr_outconns; i++) {
- conn = parent->pdata->out_conns[i];
- if (conn->dest_dev == csdev)
- return conn->dest_port;
+ for (i = 0; i < src_dev->pdata->nr_outconns; i++) {
+ conn = src_dev->pdata->out_conns[i];
+ if (conn->dest_dev == dest_dev)
+ return conn;
}
- dev_err(&csdev->dev, "couldn't find inport, parent: %s, child: %s\n",
- dev_name(&parent->dev), dev_name(&csdev->dev));
+ dev_err(&src_dev->dev,
+ "couldn't find output connection, src_dev: %s, dest_dev: %s\n",
+ dev_name(&src_dev->dev), dev_name(&dest_dev->dev));
- return -ENODEV;
-}
-
-static int coresight_find_link_outport(struct coresight_device *csdev,
- struct coresight_device *child)
-{
- int i;
- struct coresight_connection *conn;
-
- for (i = 0; i < csdev->pdata->nr_outconns; i++) {
- conn = csdev->pdata->out_conns[i];
- if (conn->dest_dev == child)
- return conn->src_port;
- }
-
- dev_err(&csdev->dev, "couldn't find outport, parent: %s, child: %s\n",
- dev_name(&csdev->dev), dev_name(&child->dev));
-
- return -ENODEV;
+ return ERR_PTR(-ENODEV);
}
static inline u32 coresight_read_claim_tags(struct coresight_device *csdev)
@@ -352,24 +336,24 @@ static int coresight_enable_link(struct coresight_device *csdev,
{
int ret = 0;
int link_subtype;
- int inport, outport;
+ struct coresight_connection *inconn, *outconn;
if (!parent || !child)
return -EINVAL;
- inport = coresight_find_link_inport(csdev, parent);
- outport = coresight_find_link_outport(csdev, child);
+ inconn = coresight_find_out_connection(parent, csdev);
+ outconn = coresight_find_out_connection(csdev, child);
link_subtype = csdev->subtype.link_subtype;
- if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_MERG && inport < 0)
- return inport;
- if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_SPLIT && outport < 0)
- return outport;
+ if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_MERG && IS_ERR(inconn))
+ return PTR_ERR(inconn);
+ if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_SPLIT && IS_ERR(outconn))
+ return PTR_ERR(outconn);
if (link_ops(csdev)->enable) {
ret = coresight_control_assoc_ectdev(csdev, true);
if (!ret) {
- ret = link_ops(csdev)->enable(csdev, inport, outport);
+ ret = link_ops(csdev)->enable(csdev, inconn, outconn);
if (ret)
coresight_control_assoc_ectdev(csdev, false);
}
@@ -385,33 +369,36 @@ static void coresight_disable_link(struct coresight_device *csdev,
struct coresight_device *parent,
struct coresight_device *child)
{
- int i, nr_conns;
+ int i;
int link_subtype;
- int inport, outport;
+ struct coresight_connection *inconn, *outconn;
if (!parent || !child)
return;
- inport = coresight_find_link_inport(csdev, parent);
- outport = coresight_find_link_outport(csdev, child);
+ inconn = coresight_find_out_connection(parent, csdev);
+ outconn = coresight_find_out_connection(csdev, child);
link_subtype = csdev->subtype.link_subtype;
- if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_MERG) {
- nr_conns = csdev->pdata->high_inport;
- } else if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_SPLIT) {
- nr_conns = csdev->pdata->high_outport;
- } else {
- nr_conns = 1;
- }
-
if (link_ops(csdev)->disable) {
- link_ops(csdev)->disable(csdev, inport, outport);
+ link_ops(csdev)->disable(csdev, inconn, outconn);
coresight_control_assoc_ectdev(csdev, false);
}
- for (i = 0; i < nr_conns; i++)
- if (atomic_read(&csdev->refcnt[i]) != 0)
+ if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_MERG) {
+ for (i = 0; i < csdev->pdata->nr_inconns; i++)
+ if (atomic_read(&csdev->pdata->in_conns[i]->dest_refcnt) !=
+ 0)
+ return;
+ } else if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_SPLIT) {
+ for (i = 0; i < csdev->pdata->nr_outconns; i++)
+ if (atomic_read(&csdev->pdata->out_conns[i]->src_refcnt) !=
+ 0)
+ return;
+ } else {
+ if (atomic_read(&csdev->refcnt) != 0)
return;
+ }
csdev->enable = false;
}
@@ -435,7 +422,7 @@ static int coresight_enable_source(struct coresight_device *csdev,
csdev->enable = true;
}
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
return 0;
}
@@ -450,7 +437,7 @@ static int coresight_enable_source(struct coresight_device *csdev,
*/
static bool coresight_disable_source(struct coresight_device *csdev)
{
- if (atomic_dec_return(csdev->refcnt) == 0) {
+ if (atomic_dec_return(&csdev->refcnt) == 0) {
if (source_ops(csdev)->disable)
source_ops(csdev)->disable(csdev, NULL);
coresight_control_assoc_ectdev(csdev, false);
@@ -1094,7 +1081,7 @@ int coresight_enable(struct coresight_device *csdev)
* source is already enabled.
*/
if (subtype == CORESIGHT_DEV_SUBTYPE_SOURCE_SOFTWARE)
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
goto out;
}
@@ -1308,7 +1295,6 @@ static void coresight_device_release(struct device *dev)
struct coresight_device *csdev = to_coresight_device(dev);
fwnode_handle_put(csdev->dev.fwnode);
- kfree(csdev->refcnt);
kfree(csdev);
}
@@ -1537,9 +1523,6 @@ void coresight_release_platform_data(struct coresight_device *csdev,
struct coresight_device *coresight_register(struct coresight_desc *desc)
{
int ret;
- int link_subtype;
- int nr_refcnts = 1;
- atomic_t *refcnts = NULL;
struct coresight_device *csdev;
bool registered = false;
@@ -1549,25 +1532,6 @@ struct coresight_device *coresight_register(struct coresight_desc *desc)
goto err_out;
}
- if (desc->type == CORESIGHT_DEV_TYPE_LINK ||
- desc->type == CORESIGHT_DEV_TYPE_LINKSINK) {
- link_subtype = desc->subtype.link_subtype;
-
- if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_MERG)
- nr_refcnts = desc->pdata->high_inport;
- else if (link_subtype == CORESIGHT_DEV_SUBTYPE_LINK_SPLIT)
- nr_refcnts = desc->pdata->high_outport;
- }
-
- refcnts = kcalloc(nr_refcnts, sizeof(*refcnts), GFP_KERNEL);
- if (!refcnts) {
- ret = -ENOMEM;
- kfree(csdev);
- goto err_out;
- }
-
- csdev->refcnt = refcnts;
-
csdev->pdata = desc->pdata;
csdev->type = desc->type;
diff --git a/drivers/hwtracing/coresight/coresight-etb10.c b/drivers/hwtracing/coresight/coresight-etb10.c
index eb99c445015a..fa80039e0821 100644
--- a/drivers/hwtracing/coresight/coresight-etb10.c
+++ b/drivers/hwtracing/coresight/coresight-etb10.c
@@ -163,7 +163,7 @@ static int etb_enable_sysfs(struct coresight_device *csdev)
drvdata->mode = CS_MODE_SYSFS;
}
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
out:
spin_unlock_irqrestore(&drvdata->spinlock, flags);
return ret;
@@ -199,7 +199,7 @@ static int etb_enable_perf(struct coresight_device *csdev, void *data)
* use for this session.
*/
if (drvdata->pid == pid) {
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
goto out;
}
@@ -217,7 +217,7 @@ static int etb_enable_perf(struct coresight_device *csdev, void *data)
/* Associate with monitored process. */
drvdata->pid = pid;
drvdata->mode = CS_MODE_PERF;
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
}
out:
@@ -356,7 +356,7 @@ static int etb_disable(struct coresight_device *csdev)
spin_lock_irqsave(&drvdata->spinlock, flags);
- if (atomic_dec_return(csdev->refcnt)) {
+ if (atomic_dec_return(&csdev->refcnt)) {
spin_unlock_irqrestore(&drvdata->spinlock, flags);
return -EBUSY;
}
@@ -447,7 +447,7 @@ static unsigned long etb_update_buffer(struct coresight_device *csdev,
spin_lock_irqsave(&drvdata->spinlock, flags);
/* Don't do anything if another tracer is using this sink */
- if (atomic_read(csdev->refcnt) != 1)
+ if (atomic_read(&csdev->refcnt) != 1)
goto out;
__etb_disable_hw(drvdata);
diff --git a/drivers/hwtracing/coresight/coresight-funnel.c b/drivers/hwtracing/coresight/coresight-funnel.c
index b363dd6bc510..b8e150e45b27 100644
--- a/drivers/hwtracing/coresight/coresight-funnel.c
+++ b/drivers/hwtracing/coresight/coresight-funnel.c
@@ -74,8 +74,9 @@ done:
return rc;
}
-static int funnel_enable(struct coresight_device *csdev, int inport,
- int outport)
+static int funnel_enable(struct coresight_device *csdev,
+ struct coresight_connection *in,
+ struct coresight_connection *out)
{
int rc = 0;
struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
@@ -83,18 +84,19 @@ static int funnel_enable(struct coresight_device *csdev, int inport,
bool first_enable = false;
spin_lock_irqsave(&drvdata->spinlock, flags);
- if (atomic_read(&csdev->refcnt[inport]) == 0) {
+ if (atomic_read(&in->dest_refcnt) == 0) {
if (drvdata->base)
- rc = dynamic_funnel_enable_hw(drvdata, inport);
+ rc = dynamic_funnel_enable_hw(drvdata, in->dest_port);
if (!rc)
first_enable = true;
}
if (!rc)
- atomic_inc(&csdev->refcnt[inport]);
+ atomic_inc(&in->dest_refcnt);
spin_unlock_irqrestore(&drvdata->spinlock, flags);
if (first_enable)
- dev_dbg(&csdev->dev, "FUNNEL inport %d enabled\n", inport);
+ dev_dbg(&csdev->dev, "FUNNEL inport %d enabled\n",
+ in->dest_port);
return rc;
}
@@ -117,23 +119,25 @@ static void dynamic_funnel_disable_hw(struct funnel_drvdata *drvdata,
CS_LOCK(drvdata->base);
}
-static void funnel_disable(struct coresight_device *csdev, int inport,
- int outport)
+static void funnel_disable(struct coresight_device *csdev,
+ struct coresight_connection *in,
+ struct coresight_connection *out)
{
struct funnel_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
unsigned long flags;
bool last_disable = false;
spin_lock_irqsave(&drvdata->spinlock, flags);
- if (atomic_dec_return(&csdev->refcnt[inport]) == 0) {
+ if (atomic_dec_return(&in->dest_refcnt) == 0) {
if (drvdata->base)
- dynamic_funnel_disable_hw(drvdata, inport);
+ dynamic_funnel_disable_hw(drvdata, in->dest_port);
last_disable = true;
}
spin_unlock_irqrestore(&drvdata->spinlock, flags);
if (last_disable)
- dev_dbg(&csdev->dev, "FUNNEL inport %d disabled\n", inport);
+ dev_dbg(&csdev->dev, "FUNNEL inport %d disabled\n",
+ in->dest_port);
}
static const struct coresight_ops_link funnel_link_ops = {
diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
index 257ad48925a1..3e2e135cb8f6 100644
--- a/drivers/hwtracing/coresight/coresight-platform.c
+++ b/drivers/hwtracing/coresight/coresight-platform.c
@@ -146,41 +146,6 @@ static inline bool of_coresight_legacy_ep_is_input(struct device_node *ep)
return of_property_read_bool(ep, "slave-mode");
}
-static void of_coresight_get_ports_legacy(const struct device_node *node,
- int *nr_inconns, int *nr_outconns)
-{
- struct device_node *ep = NULL;
- struct of_endpoint endpoint;
- int in = 0, out = 0;
-
- /*
- * Avoid warnings in of_graph_get_next_endpoint()
- * if the device doesn't have any graph connections
- */
- if (!of_graph_is_present(node))
- return;
- do {
- ep = of_graph_get_next_endpoint(node, ep);
- if (!ep)
- break;
-
- if (of_graph_parse_endpoint(ep, &endpoint))
- continue;
-
- if (of_coresight_legacy_ep_is_input(ep)) {
- in = (endpoint.port + 1 > in) ?
- endpoint.port + 1 : in;
- } else {
- out = (endpoint.port + 1) > out ?
- endpoint.port + 1 : out;
- }
-
- } while (ep);
-
- *nr_inconns = in;
- *nr_outconns = out;
-}
-
static struct device_node *of_coresight_get_port_parent(struct device_node *ep)
{
struct device_node *parent = of_graph_get_port_parent(ep);
@@ -197,58 +162,11 @@ static struct device_node *of_coresight_get_port_parent(struct device_node *ep)
}
static inline struct device_node *
-of_coresight_get_input_ports_node(const struct device_node *node)
-{
- return of_get_child_by_name(node, "in-ports");
-}
-
-static inline struct device_node *
of_coresight_get_output_ports_node(const struct device_node *node)
{
return of_get_child_by_name(node, "out-ports");
}
-static inline int
-of_coresight_count_ports(struct device_node *port_parent)
-{
- int i = 0;
- struct device_node *ep = NULL;
- struct of_endpoint endpoint;
-
- while ((ep = of_graph_get_next_endpoint(port_parent, ep))) {
- /* Defer error handling to parsing */
- if (of_graph_parse_endpoint(ep, &endpoint))
- continue;
- if (endpoint.port + 1 > i)
- i = endpoint.port + 1;
- }
-
- return i;
-}
-
-static void of_coresight_get_ports(const struct device_node *node,
- int *nr_inconns, int *nr_outconns)
-{
- struct device_node *input_ports = NULL, *output_ports = NULL;
-
- input_ports = of_coresight_get_input_ports_node(node);
- output_ports = of_coresight_get_output_ports_node(node);
-
- if (input_ports || output_ports) {
- if (input_ports) {
- *nr_inconns = of_coresight_count_ports(input_ports);
- of_node_put(input_ports);
- }
- if (output_ports) {
- *nr_outconns = of_coresight_count_ports(output_ports);
- of_node_put(output_ports);
- }
- } else {
- /* Fall back to legacy DT bindings parsing */
- of_coresight_get_ports_legacy(node, nr_inconns, nr_outconns);
- }
-}
-
static int of_coresight_get_cpu(struct device *dev)
{
int cpu;
@@ -351,13 +269,6 @@ static int of_get_coresight_platform_data(struct device *dev,
bool legacy_binding = false;
struct device_node *node = dev->of_node;
- /* Get the number of input and output port for this component */
- of_coresight_get_ports(node, &pdata->high_inport, &pdata->high_outport);
-
- /* If there are no output connections, we are done */
- if (!pdata->high_outport)
- return 0;
-
parent = of_coresight_get_output_ports_node(node);
/*
* If the DT uses obsoleted bindings, the ports are listed
@@ -365,6 +276,12 @@ static int of_get_coresight_platform_data(struct device *dev,
* ports.
*/
if (!parent) {
+ /*
+ * Avoid warnings in of_graph_get_next_endpoint()
+ * if the device doesn't have any graph connections
+ */
+ if (!of_graph_is_present(node))
+ return 0;
legacy_binding = true;
parent = node;
dev_warn_once(dev, "Uses obsolete Coresight DT bindings\n");
@@ -751,7 +668,6 @@ static int acpi_coresight_parse_graph(struct device *dev,
struct coresight_connection conn, zero_conn = {};
struct coresight_connection *new_conn;
- pdata->nr_inconns = pdata->nr_outconns = 0;
graph = acpi_get_coresight_graph(adev);
if (!graph)
return -ENOENT;
@@ -770,22 +686,9 @@ static int acpi_coresight_parse_graph(struct device *dev,
return dir;
if (dir == ACPI_CORESIGHT_LINK_MASTER) {
- if (conn.src_port >= pdata->high_outport)
- pdata->high_outport = conn.src_port + 1;
new_conn = coresight_add_out_conn(dev, pdata, &conn);
if (IS_ERR(new_conn))
return PTR_ERR(new_conn);
- } else {
- WARN_ON(pdata->high_inport == conn.dest_port + 1);
- /*
- * We do not track input port connections for a device.
- * However we need the highest port number described,
- * which can be recorded now and reuse this connection
- * record for an output connection. Hence, do not move
- * the ptr for input connections
- */
- if (conn.dest_port >= pdata->high_inport)
- pdata->high_inport = conn.dest_port + 1;
}
}
diff --git a/drivers/hwtracing/coresight/coresight-replicator.c b/drivers/hwtracing/coresight/coresight-replicator.c
index 4dd50546d7e4..b6be73034996 100644
--- a/drivers/hwtracing/coresight/coresight-replicator.c
+++ b/drivers/hwtracing/coresight/coresight-replicator.c
@@ -114,8 +114,9 @@ static int dynamic_replicator_enable(struct replicator_drvdata *drvdata,
return rc;
}
-static int replicator_enable(struct coresight_device *csdev, int inport,
- int outport)
+static int replicator_enable(struct coresight_device *csdev,
+ struct coresight_connection *in,
+ struct coresight_connection *out)
{
int rc = 0;
struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
@@ -123,15 +124,15 @@ static int replicator_enable(struct coresight_device *csdev, int inport,
bool first_enable = false;
spin_lock_irqsave(&drvdata->spinlock, flags);
- if (atomic_read(&csdev->refcnt[outport]) == 0) {
+ if (atomic_read(&out->src_refcnt) == 0) {
if (drvdata->base)
- rc = dynamic_replicator_enable(drvdata, inport,
- outport);
+ rc = dynamic_replicator_enable(drvdata, in->dest_port,
+ out->src_port);
if (!rc)
first_enable = true;
}
if (!rc)
- atomic_inc(&csdev->refcnt[outport]);
+ atomic_inc(&out->src_refcnt);
spin_unlock_irqrestore(&drvdata->spinlock, flags);
if (first_enable)
@@ -168,17 +169,19 @@ static void dynamic_replicator_disable(struct replicator_drvdata *drvdata,
CS_LOCK(drvdata->base);
}
-static void replicator_disable(struct coresight_device *csdev, int inport,
- int outport)
+static void replicator_disable(struct coresight_device *csdev,
+ struct coresight_connection *in,
+ struct coresight_connection *out)
{
struct replicator_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
unsigned long flags;
bool last_disable = false;
spin_lock_irqsave(&drvdata->spinlock, flags);
- if (atomic_dec_return(&csdev->refcnt[outport]) == 0) {
+ if (atomic_dec_return(&out->src_refcnt) == 0) {
if (drvdata->base)
- dynamic_replicator_disable(drvdata, inport, outport);
+ dynamic_replicator_disable(drvdata, in->dest_port,
+ out->src_port);
last_disable = true;
}
spin_unlock_irqrestore(&drvdata->spinlock, flags);
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etf.c b/drivers/hwtracing/coresight/coresight-tmc-etf.c
index 14d3c1472455..79d8c64eac49 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-etf.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-etf.c
@@ -206,7 +206,7 @@ static int tmc_enable_etf_sink_sysfs(struct coresight_device *csdev)
* touched.
*/
if (drvdata->mode == CS_MODE_SYSFS) {
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
goto out;
}
@@ -229,7 +229,7 @@ static int tmc_enable_etf_sink_sysfs(struct coresight_device *csdev)
ret = tmc_etb_enable_hw(drvdata);
if (!ret) {
drvdata->mode = CS_MODE_SYSFS;
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
} else {
/* Free up the buffer if we failed to enable */
used = false;
@@ -284,7 +284,7 @@ static int tmc_enable_etf_sink_perf(struct coresight_device *csdev, void *data)
* use for this session.
*/
if (drvdata->pid == pid) {
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
break;
}
@@ -293,7 +293,7 @@ static int tmc_enable_etf_sink_perf(struct coresight_device *csdev, void *data)
/* Associate with monitored process. */
drvdata->pid = pid;
drvdata->mode = CS_MODE_PERF;
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
}
} while (0);
spin_unlock_irqrestore(&drvdata->spinlock, flags);
@@ -338,7 +338,7 @@ static int tmc_disable_etf_sink(struct coresight_device *csdev)
return -EBUSY;
}
- if (atomic_dec_return(csdev->refcnt)) {
+ if (atomic_dec_return(&csdev->refcnt)) {
spin_unlock_irqrestore(&drvdata->spinlock, flags);
return -EBUSY;
}
@@ -357,7 +357,8 @@ static int tmc_disable_etf_sink(struct coresight_device *csdev)
}
static int tmc_enable_etf_link(struct coresight_device *csdev,
- int inport, int outport)
+ struct coresight_connection *in,
+ struct coresight_connection *out)
{
int ret = 0;
unsigned long flags;
@@ -370,7 +371,7 @@ static int tmc_enable_etf_link(struct coresight_device *csdev,
return -EBUSY;
}
- if (atomic_read(&csdev->refcnt[0]) == 0) {
+ if (atomic_read(&csdev->refcnt) == 0) {
ret = tmc_etf_enable_hw(drvdata);
if (!ret) {
drvdata->mode = CS_MODE_SYSFS;
@@ -378,7 +379,7 @@ static int tmc_enable_etf_link(struct coresight_device *csdev,
}
}
if (!ret)
- atomic_inc(&csdev->refcnt[0]);
+ atomic_inc(&csdev->refcnt);
spin_unlock_irqrestore(&drvdata->spinlock, flags);
if (first_enable)
@@ -387,7 +388,8 @@ static int tmc_enable_etf_link(struct coresight_device *csdev,
}
static void tmc_disable_etf_link(struct coresight_device *csdev,
- int inport, int outport)
+ struct coresight_connection *in,
+ struct coresight_connection *out)
{
unsigned long flags;
struct tmc_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
@@ -399,7 +401,7 @@ static void tmc_disable_etf_link(struct coresight_device *csdev,
return;
}
- if (atomic_dec_return(&csdev->refcnt[0]) == 0) {
+ if (atomic_dec_return(&csdev->refcnt) == 0) {
tmc_etf_disable_hw(drvdata);
drvdata->mode = CS_MODE_DISABLED;
last_disable = true;
@@ -487,7 +489,7 @@ static unsigned long tmc_update_etf_buffer(struct coresight_device *csdev,
spin_lock_irqsave(&drvdata->spinlock, flags);
/* Don't do anything if another tracer is using this sink */
- if (atomic_read(csdev->refcnt) != 1)
+ if (atomic_read(&csdev->refcnt) != 1)
goto out;
CS_UNLOCK(drvdata->base);
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c
index e4493647d66d..23fa70cc2098 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-etr.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c
@@ -1209,7 +1209,7 @@ static int tmc_enable_etr_sink_sysfs(struct coresight_device *csdev)
* touched, even if the buffer size has changed.
*/
if (drvdata->mode == CS_MODE_SYSFS) {
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
goto out;
}
@@ -1226,7 +1226,7 @@ static int tmc_enable_etr_sink_sysfs(struct coresight_device *csdev)
ret = tmc_etr_enable_hw(drvdata, drvdata->sysfs_buf);
if (!ret) {
drvdata->mode = CS_MODE_SYSFS;
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
}
out:
spin_unlock_irqrestore(&drvdata->spinlock, flags);
@@ -1535,7 +1535,7 @@ tmc_update_etr_buffer(struct coresight_device *csdev,
spin_lock_irqsave(&drvdata->spinlock, flags);
/* Don't do anything if another tracer is using this sink */
- if (atomic_read(csdev->refcnt) != 1) {
+ if (atomic_read(&csdev->refcnt) != 1) {
spin_unlock_irqrestore(&drvdata->spinlock, flags);
goto out;
}
@@ -1647,7 +1647,7 @@ static int tmc_enable_etr_sink_perf(struct coresight_device *csdev, void *data)
* use for this session.
*/
if (drvdata->pid == pid) {
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
goto unlock_out;
}
@@ -1657,7 +1657,7 @@ static int tmc_enable_etr_sink_perf(struct coresight_device *csdev, void *data)
drvdata->pid = pid;
drvdata->mode = CS_MODE_PERF;
drvdata->perf_buf = etr_perf->etr_buf;
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
}
unlock_out:
@@ -1690,7 +1690,7 @@ static int tmc_disable_etr_sink(struct coresight_device *csdev)
return -EBUSY;
}
- if (atomic_dec_return(csdev->refcnt)) {
+ if (atomic_dec_return(&csdev->refcnt)) {
spin_unlock_irqrestore(&drvdata->spinlock, flags);
return -EBUSY;
}
diff --git a/drivers/hwtracing/coresight/coresight-tpda.c b/drivers/hwtracing/coresight/coresight-tpda.c
index f712e112ecff..8d2b9d29237d 100644
--- a/drivers/hwtracing/coresight/coresight-tpda.c
+++ b/drivers/hwtracing/coresight/coresight-tpda.c
@@ -54,18 +54,20 @@ static void __tpda_enable(struct tpda_drvdata *drvdata, int port)
CS_LOCK(drvdata->base);
}
-static int tpda_enable(struct coresight_device *csdev, int inport, int outport)
+static int tpda_enable(struct coresight_device *csdev,
+ struct coresight_connection *in,
+ struct coresight_connection *out)
{
struct tpda_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
spin_lock(&drvdata->spinlock);
- if (atomic_read(&csdev->refcnt[inport]) == 0)
- __tpda_enable(drvdata, inport);
+ if (atomic_read(&in->dest_refcnt) == 0)
+ __tpda_enable(drvdata, in->dest_port);
- atomic_inc(&csdev->refcnt[inport]);
+ atomic_inc(&in->dest_refcnt);
spin_unlock(&drvdata->spinlock);
- dev_dbg(drvdata->dev, "TPDA inport %d enabled.\n", inport);
+ dev_dbg(drvdata->dev, "TPDA inport %d enabled.\n", in->dest_port);
return 0;
}
@@ -82,18 +84,19 @@ static void __tpda_disable(struct tpda_drvdata *drvdata, int port)
CS_LOCK(drvdata->base);
}
-static void tpda_disable(struct coresight_device *csdev, int inport,
- int outport)
+static void tpda_disable(struct coresight_device *csdev,
+ struct coresight_connection *in,
+ struct coresight_connection *out)
{
struct tpda_drvdata *drvdata = dev_get_drvdata(csdev->dev.parent);
spin_lock(&drvdata->spinlock);
- if (atomic_dec_return(&csdev->refcnt[inport]) == 0)
- __tpda_disable(drvdata, inport);
+ if (atomic_dec_return(&in->dest_refcnt) == 0)
+ __tpda_disable(drvdata, in->dest_port);
spin_unlock(&drvdata->spinlock);
- dev_dbg(drvdata->dev, "TPDA inport %d disabled\n", inport);
+ dev_dbg(drvdata->dev, "TPDA inport %d disabled\n", in->dest_port);
}
static const struct coresight_ops_link tpda_link_ops = {
diff --git a/drivers/hwtracing/coresight/coresight-tpiu.c b/drivers/hwtracing/coresight/coresight-tpiu.c
index b0179f761c98..59eac93fd6bb 100644
--- a/drivers/hwtracing/coresight/coresight-tpiu.c
+++ b/drivers/hwtracing/coresight/coresight-tpiu.c
@@ -73,7 +73,7 @@ static int tpiu_enable(struct coresight_device *csdev, enum cs_mode mode,
void *__unused)
{
tpiu_enable_hw(&csdev->access);
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
dev_dbg(&csdev->dev, "TPIU enabled\n");
return 0;
}
@@ -96,7 +96,7 @@ static void tpiu_disable_hw(struct csdev_access *csa)
static int tpiu_disable(struct coresight_device *csdev)
{
- if (atomic_dec_return(csdev->refcnt))
+ if (atomic_dec_return(&csdev->refcnt))
return -EBUSY;
tpiu_disable_hw(&csdev->access);
diff --git a/drivers/hwtracing/coresight/ultrasoc-smb.c b/drivers/hwtracing/coresight/ultrasoc-smb.c
index a2ced0b3c3cd..e9a32a97fbee 100644
--- a/drivers/hwtracing/coresight/ultrasoc-smb.c
+++ b/drivers/hwtracing/coresight/ultrasoc-smb.c
@@ -106,7 +106,7 @@ static int smb_open(struct inode *inode, struct file *file)
goto out;
}
- if (atomic_read(drvdata->csdev->refcnt)) {
+ if (atomic_read(&drvdata->csdev->refcnt)) {
ret = -EBUSY;
goto out;
}
@@ -290,7 +290,7 @@ static int smb_enable(struct coresight_device *csdev, enum cs_mode mode,
if (ret)
goto out;
- atomic_inc(csdev->refcnt);
+ atomic_inc(&csdev->refcnt);
dev_dbg(&csdev->dev, "Ultrasoc SMB enabled\n");
out:
@@ -311,7 +311,7 @@ static int smb_disable(struct coresight_device *csdev)
goto out;
}
- if (atomic_dec_return(csdev->refcnt)) {
+ if (atomic_dec_return(&csdev->refcnt)) {
ret = -EBUSY;
goto out;
}
@@ -411,7 +411,7 @@ static unsigned long smb_update_buffer(struct coresight_device *csdev,
mutex_lock(&drvdata->mutex);
/* Don't do anything if another tracer is using this sink. */
- if (atomic_read(csdev->refcnt) != 1)
+ if (atomic_read(&csdev->refcnt) != 1)
goto out;
smb_disable_hw(drvdata);
diff --git a/include/linux/coresight.h b/include/linux/coresight.h
index e9c52c5ca7f3..b97edd24f3ec 100644
--- a/include/linux/coresight.h
+++ b/include/linux/coresight.h
@@ -111,8 +111,6 @@ union coresight_dev_subtype {
* unloaded the connection leaves an empty slot.
*/
struct coresight_platform_data {
- int high_inport;
- int high_outport;
int nr_inconns;
int nr_outconns;
struct coresight_connection **out_conns;
@@ -205,6 +203,8 @@ struct coresight_connection {
struct coresight_device *dest_dev;
struct coresight_sysfs_link *link;
struct coresight_device *src_dev;
+ atomic_t src_refcnt;
+ atomic_t dest_refcnt;
};
/**
@@ -256,7 +256,7 @@ struct coresight_device {
const struct coresight_ops *ops;
struct csdev_access access;
struct device dev;
- atomic_t *refcnt;
+ atomic_t refcnt;
bool orphan;
bool enable; /* true only if configured as part of a path */
/* sink specific fields */
@@ -341,8 +341,12 @@ struct coresight_ops_sink {
* @disable: disables flow between iport and oport.
*/
struct coresight_ops_link {
- int (*enable)(struct coresight_device *csdev, int iport, int oport);
- void (*disable)(struct coresight_device *csdev, int iport, int oport);
+ int (*enable)(struct coresight_device *csdev,
+ struct coresight_connection *in,
+ struct coresight_connection *out);
+ void (*disable)(struct coresight_device *csdev,
+ struct coresight_connection *in,
+ struct coresight_connection *out);
};
/**
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-10 10:21:28 +0300