*/
#include <linux/debugfs.h>
-#include <linux/input.h>
#include <linux/workqueue.h>
#include "greybus.h"
-#define SVC_KEY_ARA_BUTTON KEY_A
-
#define SVC_INTF_EJECT_TIMEOUT 9000
#define SVC_INTF_ACTIVATE_TIMEOUT 6000
+#define SVC_INTF_RESUME_TIMEOUT 3000
struct gb_svc_deferred_request {
struct work_struct work;
}
static DEVICE_ATTR_RO(ap_intf_id);
-
// FIXME
// This is a hack, we need to do this "right" and clean the interface up
// properly, not just forcibly yank the thing out of the system and hope for the
}
static DEVICE_ATTR_RW(watchdog);
+static ssize_t watchdog_action_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct gb_svc *svc = to_gb_svc(dev);
+
+ if (svc->action == GB_SVC_WATCHDOG_BITE_PANIC_KERNEL)
+ return sprintf(buf, "panic\n");
+ else if (svc->action == GB_SVC_WATCHDOG_BITE_RESET_UNIPRO)
+ return sprintf(buf, "reset\n");
+
+ return -EINVAL;
+}
+
+static ssize_t watchdog_action_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t len)
+{
+ struct gb_svc *svc = to_gb_svc(dev);
+
+ if (sysfs_streq(buf, "panic"))
+ svc->action = GB_SVC_WATCHDOG_BITE_PANIC_KERNEL;
+ else if (sysfs_streq(buf, "reset"))
+ svc->action = GB_SVC_WATCHDOG_BITE_RESET_UNIPRO;
+ else
+ return -EINVAL;
+
+ return len;
+}
+static DEVICE_ATTR_RW(watchdog_action);
+
static int gb_svc_pwrmon_rail_count_get(struct gb_svc *svc, u8 *value)
{
struct gb_svc_pwrmon_rail_count_get_response response;
return ret;
}
+ if (response->status != GB_SVC_OP_SUCCESS) {
+ dev_err(&svc->dev,
+ "SVC error while getting rail names: %u\n",
+ response->status);
+ return -EREMOTEIO;
+ }
+
return 0;
}
&dev_attr_ap_intf_id.attr,
&dev_attr_intf_eject.attr,
&dev_attr_watchdog.attr,
+ &dev_attr_watchdog_action.attr,
NULL,
};
ATTRIBUTE_GROUPS(svc);
return 0;
}
+int gb_svc_intf_resume(struct gb_svc *svc, u8 intf_id)
+{
+ struct gb_svc_intf_resume_request request;
+ struct gb_svc_intf_resume_response response;
+ int ret;
+
+ request.intf_id = intf_id;
+
+ ret = gb_operation_sync_timeout(svc->connection,
+ GB_SVC_TYPE_INTF_RESUME,
+ &request, sizeof(request),
+ &response, sizeof(response),
+ SVC_INTF_RESUME_TIMEOUT);
+ if (ret < 0) {
+ dev_err(&svc->dev, "failed to send interface resume %u: %d\n",
+ intf_id, ret);
+ return ret;
+ }
+
+ if (response.status != GB_SVC_OP_SUCCESS) {
+ dev_err(&svc->dev, "failed to resume interface %u: %u\n",
+ intf_id, response.status);
+ return -EREMOTEIO;
+ }
+
+ return 0;
+}
+
int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
u32 *value)
{
return 0;
}
-EXPORT_SYMBOL_GPL(gb_svc_dme_peer_get);
int gb_svc_dme_peer_set(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
u32 value)
return 0;
}
-EXPORT_SYMBOL_GPL(gb_svc_dme_peer_set);
int gb_svc_connection_create(struct gb_svc *svc,
u8 intf1_id, u16 cport1_id,
return gb_operation_sync(svc->connection, GB_SVC_TYPE_CONN_CREATE,
&request, sizeof(request), NULL, 0);
}
-EXPORT_SYMBOL_GPL(gb_svc_connection_create);
void gb_svc_connection_destroy(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
u8 intf2_id, u16 cport2_id)
intf1_id, cport1_id, intf2_id, cport2_id, ret);
}
}
-EXPORT_SYMBOL_GPL(gb_svc_connection_destroy);
int gb_svc_timesync_enable(struct gb_svc *svc, u8 count, u64 frame_time,
u32 strobe_delay, u32 refclk)
GB_SVC_TYPE_TIMESYNC_ENABLE,
&request, sizeof(request), NULL, 0);
}
-EXPORT_SYMBOL_GPL(gb_svc_timesync_enable);
int gb_svc_timesync_disable(struct gb_svc *svc)
{
GB_SVC_TYPE_TIMESYNC_DISABLE,
NULL, 0, NULL, 0);
}
-EXPORT_SYMBOL_GPL(gb_svc_timesync_disable);
int gb_svc_timesync_authoritative(struct gb_svc *svc, u64 *frame_time)
{
frame_time[i] = le64_to_cpu(response.frame_time[i]);
return 0;
}
-EXPORT_SYMBOL_GPL(gb_svc_timesync_authoritative);
int gb_svc_timesync_ping(struct gb_svc *svc, u64 *frame_time)
{
*frame_time = le64_to_cpu(response.frame_time);
return 0;
}
-EXPORT_SYMBOL_GPL(gb_svc_timesync_ping);
int gb_svc_timesync_wake_pins_acquire(struct gb_svc *svc, u32 strobe_mask)
{
&request, sizeof(request),
NULL, 0);
}
-EXPORT_SYMBOL_GPL(gb_svc_timesync_wake_pins_acquire);
int gb_svc_timesync_wake_pins_release(struct gb_svc *svc)
{
GB_SVC_TYPE_TIMESYNC_WAKE_PINS_RELEASE,
NULL, 0, NULL, 0);
}
-EXPORT_SYMBOL_GPL(gb_svc_timesync_wake_pins_release);
/* Creates bi-directional routes between the devices */
int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id,
int ret;
u16 result_code;
+ memset(&request, 0, sizeof(request));
+
request.intf_id = intf_id;
request.hs_series = hs_series;
request.tx_mode = tx_mode;
if (ret < 0)
return ret;
- result_code = le16_to_cpu(response.result_code);
+ result_code = response.result_code;
if (result_code != GB_SVC_SETPWRM_PWR_LOCAL) {
dev_err(&svc->dev, "set power mode = %d\n", result_code);
return -EIO;
}
EXPORT_SYMBOL_GPL(gb_svc_intf_set_power_mode);
+int gb_svc_intf_set_power_mode_hibernate(struct gb_svc *svc, u8 intf_id)
+{
+ struct gb_svc_intf_set_pwrm_request request;
+ struct gb_svc_intf_set_pwrm_response response;
+ int ret;
+ u16 result_code;
+
+ memset(&request, 0, sizeof(request));
+
+ request.intf_id = intf_id;
+ request.hs_series = GB_SVC_UNIPRO_HS_SERIES_A;
+ request.tx_mode = GB_SVC_UNIPRO_HIBERNATE_MODE;
+ request.rx_mode = GB_SVC_UNIPRO_HIBERNATE_MODE;
+
+ ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_INTF_SET_PWRM,
+ &request, sizeof(request),
+ &response, sizeof(response));
+ if (ret < 0) {
+ dev_err(&svc->dev,
+ "failed to send set power mode operation to interface %u: %d\n",
+ intf_id, ret);
+ return ret;
+ }
+
+ result_code = response.result_code;
+ if (result_code != GB_SVC_SETPWRM_PWR_OK) {
+ dev_err(&svc->dev,
+ "failed to hibernate the link for interface %u: %u\n",
+ intf_id, result_code);
+ return -EIO;
+ }
+
+ return 0;
+}
+
int gb_svc_ping(struct gb_svc *svc)
{
return gb_operation_sync_timeout(svc->connection, GB_SVC_TYPE_PING,
NULL, 0, NULL, 0,
GB_OPERATION_TIMEOUT_DEFAULT * 2);
}
-EXPORT_SYMBOL_GPL(gb_svc_ping);
static int gb_svc_version_request(struct gb_operation *op)
{
if (!rail_count || rail_count > GB_SVC_PWRMON_MAX_RAIL_COUNT)
goto err_pwrmon_debugfs;
- bufsize = GB_SVC_PWRMON_RAIL_NAME_BUFSIZE * rail_count;
+ bufsize = sizeof(*rail_names) +
+ GB_SVC_PWRMON_RAIL_NAME_BUFSIZE * rail_count;
rail_names = kzalloc(bufsize, GFP_KERNEL);
if (!rail_names)
&pwrmon_debugfs_current_fops);
debugfs_create_file("power_now", S_IRUGO, dir, rail,
&pwrmon_debugfs_power_fops);
- };
+ }
kfree(rail_names);
return;
return ret;
}
- ret = input_register_device(svc->input);
- if (ret) {
- dev_err(&svc->dev, "failed to register input: %d\n", ret);
- device_del(&svc->dev);
- return ret;
- }
-
ret = gb_svc_watchdog_create(svc);
if (ret) {
dev_err(&svc->dev, "failed to create watchdog: %d\n", ret);
- input_unregister_device(svc->input);
- device_del(&svc->dev);
- return ret;
+ goto err_unregister_device;
}
gb_svc_debugfs_init(svc);
+ ret = gb_timesync_svc_add(svc);
+ if (ret) {
+ dev_err(&svc->dev, "failed to add SVC to timesync: %d\n", ret);
+ gb_svc_debugfs_exit(svc);
+ goto err_unregister_device;
+ }
+
return gb_svc_queue_deferred_request(op);
+
+err_unregister_device:
+ gb_svc_watchdog_destroy(svc);
+ device_del(&svc->dev);
+ return ret;
}
static struct gb_interface *gb_svc_interface_lookup(struct gb_svc *svc,
return NULL;
}
-static void gb_svc_intf_reenable(struct gb_svc *svc, struct gb_interface *intf)
-{
- int ret;
-
- mutex_lock(&intf->mutex);
-
- /* Mark as disconnected to prevent I/O during disable. */
- intf->disconnected = true;
- gb_interface_disable(intf);
- intf->disconnected = false;
-
- ret = gb_interface_enable(intf);
- if (ret) {
- dev_err(&svc->dev, "failed to enable interface %u: %d\n",
- intf->interface_id, ret);
-
- gb_interface_deactivate(intf);
- }
-
- mutex_unlock(&intf->mutex);
-}
-
static void gb_svc_process_hello_deferred(struct gb_operation *operation)
{
struct gb_connection *connection = operation->connection;
ret);
}
-static void gb_svc_process_intf_hotplug(struct gb_operation *operation)
-{
- struct gb_svc_intf_hotplug_request *request;
- struct gb_connection *connection = operation->connection;
- struct gb_svc *svc = gb_connection_get_data(connection);
- struct gb_host_device *hd = connection->hd;
- struct gb_module *module;
- u8 intf_id;
- int ret;
-
- /* The request message size has already been verified. */
- request = operation->request->payload;
- intf_id = request->intf_id;
-
- dev_dbg(&svc->dev, "%s - id = %u\n", __func__, intf_id);
-
- /* All modules are considered 1x2 for now */
- module = gb_svc_module_lookup(svc, intf_id);
- if (module) {
- dev_info(&svc->dev, "mode switch detected on interface %u\n",
- intf_id);
-
- return gb_svc_intf_reenable(svc, module->interfaces[0]);
- }
-
- module = gb_module_create(hd, intf_id, 1);
- if (!module) {
- dev_err(&svc->dev, "failed to create module\n");
- return;
- }
-
- ret = gb_module_add(module);
- if (ret) {
- gb_module_put(module);
- return;
- }
-
- list_add(&module->hd_node, &hd->modules);
-}
-
-static void gb_svc_process_intf_hot_unplug(struct gb_operation *operation)
-{
- struct gb_svc *svc = gb_connection_get_data(operation->connection);
- struct gb_svc_intf_hot_unplug_request *request;
- struct gb_module *module;
- u8 intf_id;
-
- /* The request message size has already been verified. */
- request = operation->request->payload;
- intf_id = request->intf_id;
-
- dev_dbg(&svc->dev, "%s - id = %u\n", __func__, intf_id);
-
- /* All modules are considered 1x2 for now */
- module = gb_svc_module_lookup(svc, intf_id);
- if (!module) {
- dev_warn(&svc->dev, "could not find hot-unplug interface %u\n",
- intf_id);
- return;
- }
-
- module->disconnected = true;
-
- gb_module_del(module);
- list_del(&module->hd_node);
- gb_module_put(module);
-}
-
static void gb_svc_process_module_inserted(struct gb_operation *operation)
{
struct gb_svc_module_inserted_request *request;
gb_module_put(module);
}
+static void gb_svc_process_intf_oops(struct gb_operation *operation)
+{
+ struct gb_svc_intf_oops_request *request;
+ struct gb_connection *connection = operation->connection;
+ struct gb_svc *svc = gb_connection_get_data(connection);
+ struct gb_interface *intf;
+ u8 intf_id;
+ u8 reason;
+
+ /* The request message size has already been verified. */
+ request = operation->request->payload;
+ intf_id = request->intf_id;
+ reason = request->reason;
+
+ intf = gb_svc_interface_lookup(svc, intf_id);
+ if (!intf) {
+ dev_warn(&svc->dev, "unexpected interface-oops event %u\n",
+ intf_id);
+ return;
+ }
+
+ dev_info(&svc->dev, "Deactivating interface %u, interface oops reason = %u\n",
+ intf_id, reason);
+
+ mutex_lock(&intf->mutex);
+ intf->disconnected = true;
+ gb_interface_disable(intf);
+ gb_interface_deactivate(intf);
+ mutex_unlock(&intf->mutex);
+}
+
static void gb_svc_process_intf_mailbox_event(struct gb_operation *operation)
{
struct gb_svc_intf_mailbox_event_request *request;
return;
}
- if (result_code) {
- dev_warn(&svc->dev,
- "mailbox event %u with UniPro error: 0x%04x\n",
- intf_id, result_code);
- goto err_disable_interface;
- }
-
- if (mailbox != GB_SVC_INTF_MAILBOX_GREYBUS) {
- dev_warn(&svc->dev,
- "mailbox event %u with unexected value: 0x%08x\n",
- intf_id, mailbox);
- goto err_disable_interface;
- }
-
- dev_info(&svc->dev, "mode switch detected on interface %u\n", intf_id);
-
- gb_svc_intf_reenable(svc, intf);
-
- return;
-
-err_disable_interface:
- mutex_lock(&intf->mutex);
- gb_interface_disable(intf);
- gb_interface_deactivate(intf);
- mutex_unlock(&intf->mutex);
+ gb_interface_mailbox_event(intf, result_code, mailbox);
}
static void gb_svc_process_deferred_request(struct work_struct *work)
case GB_SVC_TYPE_SVC_HELLO:
gb_svc_process_hello_deferred(operation);
break;
- case GB_SVC_TYPE_INTF_HOTPLUG:
- gb_svc_process_intf_hotplug(operation);
- break;
- case GB_SVC_TYPE_INTF_HOT_UNPLUG:
- gb_svc_process_intf_hot_unplug(operation);
- break;
case GB_SVC_TYPE_MODULE_INSERTED:
gb_svc_process_module_inserted(operation);
break;
case GB_SVC_TYPE_INTF_MAILBOX_EVENT:
gb_svc_process_intf_mailbox_event(operation);
break;
+ case GB_SVC_TYPE_INTF_OOPS:
+ gb_svc_process_intf_oops(operation);
+ break;
default:
dev_err(&svc->dev, "bad deferred request type: 0x%02x\n", type);
}
return 0;
}
-/*
- * Bringing up a module can be time consuming, as that may require lots of
- * initialization on the module side. Over that, we may also need to download
- * the firmware first and flash that on the module.
- *
- * In order not to make other svc events wait for all this to finish,
- * handle most of module hotplug stuff outside of the hotplug callback, with
- * help of a workqueue.
- */
-static int gb_svc_intf_hotplug_recv(struct gb_operation *op)
-{
- struct gb_svc *svc = gb_connection_get_data(op->connection);
- struct gb_svc_intf_hotplug_request *request;
-
- if (op->request->payload_size < sizeof(*request)) {
- dev_warn(&svc->dev, "short hotplug request received (%zu < %zu)\n",
- op->request->payload_size, sizeof(*request));
- return -EINVAL;
- }
-
- request = op->request->payload;
-
- dev_dbg(&svc->dev, "%s - id = %u\n", __func__, request->intf_id);
-
- return gb_svc_queue_deferred_request(op);
-}
-
-static int gb_svc_intf_hot_unplug_recv(struct gb_operation *op)
-{
- struct gb_svc *svc = gb_connection_get_data(op->connection);
- struct gb_svc_intf_hot_unplug_request *request;
-
- if (op->request->payload_size < sizeof(*request)) {
- dev_warn(&svc->dev, "short hot unplug request received (%zu < %zu)\n",
- op->request->payload_size, sizeof(*request));
- return -EINVAL;
- }
-
- request = op->request->payload;
-
- dev_dbg(&svc->dev, "%s - id = %u\n", __func__, request->intf_id);
-
- return gb_svc_queue_deferred_request(op);
-}
-
static int gb_svc_intf_reset_recv(struct gb_operation *op)
{
struct gb_svc *svc = gb_connection_get_data(op->connection);
return 0;
}
-static int gb_svc_key_code_map(struct gb_svc *svc, u16 key_code, u16 *code)
-{
- switch (key_code) {
- case GB_KEYCODE_ARA:
- *code = SVC_KEY_ARA_BUTTON;
- break;
- default:
- dev_warn(&svc->dev, "unknown keycode received: %u\n", key_code);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int gb_svc_key_event_recv(struct gb_operation *op)
-{
- struct gb_svc *svc = gb_connection_get_data(op->connection);
- struct gb_message *request = op->request;
- struct gb_svc_key_event_request *key;
- u16 code;
- u8 event;
- int ret;
-
- if (request->payload_size < sizeof(*key)) {
- dev_warn(&svc->dev, "short key request received (%zu < %zu)\n",
- request->payload_size, sizeof(*key));
- return -EINVAL;
- }
-
- key = request->payload;
-
- ret = gb_svc_key_code_map(svc, le16_to_cpu(key->key_code), &code);
- if (ret < 0)
- return ret;
-
- event = key->key_event;
- if ((event != GB_SVC_KEY_PRESSED) && (event != GB_SVC_KEY_RELEASED)) {
- dev_warn(&svc->dev, "unknown key event received: %u\n", event);
- return -EINVAL;
- }
-
- input_report_key(svc->input, code, (event == GB_SVC_KEY_PRESSED));
- input_sync(svc->input);
-
- return 0;
-}
-
static int gb_svc_module_inserted_recv(struct gb_operation *op)
{
struct gb_svc *svc = gb_connection_get_data(op->connection);
return gb_svc_queue_deferred_request(op);
}
+static int gb_svc_intf_oops_recv(struct gb_operation *op)
+{
+ struct gb_svc *svc = gb_connection_get_data(op->connection);
+ struct gb_svc_intf_oops_request *request;
+
+ if (op->request->payload_size < sizeof(*request)) {
+ dev_warn(&svc->dev, "short intf-oops request received (%zu < %zu)\n",
+ op->request->payload_size, sizeof(*request));
+ return -EINVAL;
+ }
+
+ return gb_svc_queue_deferred_request(op);
+}
+
static int gb_svc_intf_mailbox_event_recv(struct gb_operation *op)
{
struct gb_svc *svc = gb_connection_get_data(op->connection);
if (!ret)
svc->state = GB_SVC_STATE_SVC_HELLO;
return ret;
- case GB_SVC_TYPE_INTF_HOTPLUG:
- return gb_svc_intf_hotplug_recv(op);
- case GB_SVC_TYPE_INTF_HOT_UNPLUG:
- return gb_svc_intf_hot_unplug_recv(op);
case GB_SVC_TYPE_INTF_RESET:
return gb_svc_intf_reset_recv(op);
- case GB_SVC_TYPE_KEY_EVENT:
- return gb_svc_key_event_recv(op);
case GB_SVC_TYPE_MODULE_INSERTED:
return gb_svc_module_inserted_recv(op);
case GB_SVC_TYPE_MODULE_REMOVED:
return gb_svc_module_removed_recv(op);
case GB_SVC_TYPE_INTF_MAILBOX_EVENT:
return gb_svc_intf_mailbox_event_recv(op);
+ case GB_SVC_TYPE_INTF_OOPS:
+ return gb_svc_intf_oops_recv(op);
default:
dev_warn(&svc->dev, "unsupported request 0x%02x\n", type);
return -EINVAL;
}
}
-static struct input_dev *gb_svc_input_create(struct gb_svc *svc)
-{
- struct input_dev *input_dev;
-
- input_dev = input_allocate_device();
- if (!input_dev)
- return ERR_PTR(-ENOMEM);
-
- input_dev->name = dev_name(&svc->dev);
- svc->input_phys = kasprintf(GFP_KERNEL, "greybus-%s/input0",
- input_dev->name);
- if (!svc->input_phys)
- goto err_free_input;
-
- input_dev->phys = svc->input_phys;
- input_dev->dev.parent = &svc->dev;
-
- input_set_drvdata(input_dev, svc);
-
- input_set_capability(input_dev, EV_KEY, SVC_KEY_ARA_BUTTON);
-
- return input_dev;
-
-err_free_input:
- input_free_device(svc->input);
- return ERR_PTR(-ENOMEM);
-}
-
static void gb_svc_release(struct device *dev)
{
struct gb_svc *svc = to_gb_svc(dev);
gb_connection_destroy(svc->connection);
ida_destroy(&svc->device_id_map);
destroy_workqueue(svc->wq);
- kfree(svc->input_phys);
kfree(svc);
}
svc->state = GB_SVC_STATE_RESET;
svc->hd = hd;
- svc->input = gb_svc_input_create(svc);
- if (IS_ERR(svc->input)) {
- dev_err(&svc->dev, "failed to create input device: %ld\n",
- PTR_ERR(svc->input));
- goto err_put_device;
- }
-
svc->connection = gb_connection_create_static(hd, GB_SVC_CPORT_ID,
gb_svc_request_handler);
if (IS_ERR(svc->connection)) {
dev_err(&svc->dev, "failed to create connection: %ld\n",
PTR_ERR(svc->connection));
- goto err_free_input;
+ goto err_put_device;
}
gb_connection_set_data(svc->connection, svc);
return svc;
-err_free_input:
- input_free_device(svc->input);
err_put_device:
put_device(&svc->dev);
return NULL;
void gb_svc_del(struct gb_svc *svc)
{
- gb_connection_disable(svc->connection);
+ gb_connection_disable_rx(svc->connection);
/*
- * The SVC device and input device may have been registered
- * from the request handler.
+ * The SVC device may have been registered from the request handler.
*/
if (device_is_registered(&svc->dev)) {
+ gb_timesync_svc_remove(svc);
gb_svc_debugfs_exit(svc);
gb_svc_watchdog_destroy(svc);
- input_unregister_device(svc->input);
device_del(&svc->dev);
}
flush_workqueue(svc->wq);
gb_svc_remove_modules(svc);
+
+ gb_connection_disable(svc->connection);
}
void gb_svc_put(struct gb_svc *svc)
projects / cascardo / linux.git / blobdiff