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1397 lines
35 KiB
1397 lines
35 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* SVC Greybus driver. |
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* |
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* Copyright 2015 Google Inc. |
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* Copyright 2015 Linaro Ltd. |
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*/ |
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|
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#include <linux/debugfs.h> |
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#include <linux/workqueue.h> |
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#include <linux/greybus.h> |
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|
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#define SVC_INTF_EJECT_TIMEOUT 9000 |
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#define SVC_INTF_ACTIVATE_TIMEOUT 6000 |
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#define SVC_INTF_RESUME_TIMEOUT 3000 |
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struct gb_svc_deferred_request { |
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struct work_struct work; |
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struct gb_operation *operation; |
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}; |
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static int gb_svc_queue_deferred_request(struct gb_operation *operation); |
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static ssize_t endo_id_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct gb_svc *svc = to_gb_svc(dev); |
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|
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return sprintf(buf, "0x%04x\n", svc->endo_id); |
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} |
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static DEVICE_ATTR_RO(endo_id); |
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static ssize_t ap_intf_id_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct gb_svc *svc = to_gb_svc(dev); |
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return sprintf(buf, "%u\n", svc->ap_intf_id); |
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} |
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static DEVICE_ATTR_RO(ap_intf_id); |
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|
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// FIXME |
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// This is a hack, we need to do this "right" and clean the interface up |
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// properly, not just forcibly yank the thing out of the system and hope for the |
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// best. But for now, people want their modules to come out without having to |
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// throw the thing to the ground or get out a screwdriver. |
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static ssize_t intf_eject_store(struct device *dev, |
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struct device_attribute *attr, const char *buf, |
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size_t len) |
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{ |
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struct gb_svc *svc = to_gb_svc(dev); |
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unsigned short intf_id; |
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int ret; |
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ret = kstrtou16(buf, 10, &intf_id); |
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if (ret < 0) |
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return ret; |
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dev_warn(dev, "Forcibly trying to eject interface %d\n", intf_id); |
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ret = gb_svc_intf_eject(svc, intf_id); |
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if (ret < 0) |
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return ret; |
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return len; |
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} |
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static DEVICE_ATTR_WO(intf_eject); |
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static ssize_t watchdog_show(struct device *dev, struct device_attribute *attr, |
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char *buf) |
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{ |
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struct gb_svc *svc = to_gb_svc(dev); |
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|
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return sprintf(buf, "%s\n", |
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gb_svc_watchdog_enabled(svc) ? "enabled" : "disabled"); |
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} |
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static ssize_t watchdog_store(struct device *dev, |
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struct device_attribute *attr, const char *buf, |
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size_t len) |
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{ |
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struct gb_svc *svc = to_gb_svc(dev); |
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int retval; |
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bool user_request; |
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retval = strtobool(buf, &user_request); |
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if (retval) |
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return retval; |
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if (user_request) |
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retval = gb_svc_watchdog_enable(svc); |
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else |
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retval = gb_svc_watchdog_disable(svc); |
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if (retval) |
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return retval; |
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return len; |
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} |
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static DEVICE_ATTR_RW(watchdog); |
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static ssize_t watchdog_action_show(struct device *dev, |
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struct device_attribute *attr, char *buf) |
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{ |
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struct gb_svc *svc = to_gb_svc(dev); |
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if (svc->action == GB_SVC_WATCHDOG_BITE_PANIC_KERNEL) |
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return sprintf(buf, "panic\n"); |
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else if (svc->action == GB_SVC_WATCHDOG_BITE_RESET_UNIPRO) |
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return sprintf(buf, "reset\n"); |
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return -EINVAL; |
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} |
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static ssize_t watchdog_action_store(struct device *dev, |
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struct device_attribute *attr, |
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const char *buf, size_t len) |
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{ |
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struct gb_svc *svc = to_gb_svc(dev); |
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if (sysfs_streq(buf, "panic")) |
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svc->action = GB_SVC_WATCHDOG_BITE_PANIC_KERNEL; |
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else if (sysfs_streq(buf, "reset")) |
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svc->action = GB_SVC_WATCHDOG_BITE_RESET_UNIPRO; |
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else |
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return -EINVAL; |
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return len; |
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} |
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static DEVICE_ATTR_RW(watchdog_action); |
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static int gb_svc_pwrmon_rail_count_get(struct gb_svc *svc, u8 *value) |
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{ |
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struct gb_svc_pwrmon_rail_count_get_response response; |
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int ret; |
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ret = gb_operation_sync(svc->connection, |
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GB_SVC_TYPE_PWRMON_RAIL_COUNT_GET, NULL, 0, |
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&response, sizeof(response)); |
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if (ret) { |
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dev_err(&svc->dev, "failed to get rail count: %d\n", ret); |
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return ret; |
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} |
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*value = response.rail_count; |
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return 0; |
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} |
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static int gb_svc_pwrmon_rail_names_get(struct gb_svc *svc, |
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struct gb_svc_pwrmon_rail_names_get_response *response, |
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size_t bufsize) |
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{ |
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int ret; |
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ret = gb_operation_sync(svc->connection, |
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GB_SVC_TYPE_PWRMON_RAIL_NAMES_GET, NULL, 0, |
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response, bufsize); |
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if (ret) { |
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dev_err(&svc->dev, "failed to get rail names: %d\n", ret); |
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return ret; |
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} |
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if (response->status != GB_SVC_OP_SUCCESS) { |
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dev_err(&svc->dev, |
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"SVC error while getting rail names: %u\n", |
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response->status); |
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return -EREMOTEIO; |
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} |
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return 0; |
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} |
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static int gb_svc_pwrmon_sample_get(struct gb_svc *svc, u8 rail_id, |
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u8 measurement_type, u32 *value) |
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{ |
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struct gb_svc_pwrmon_sample_get_request request; |
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struct gb_svc_pwrmon_sample_get_response response; |
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int ret; |
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request.rail_id = rail_id; |
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request.measurement_type = measurement_type; |
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ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_PWRMON_SAMPLE_GET, |
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&request, sizeof(request), |
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&response, sizeof(response)); |
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if (ret) { |
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dev_err(&svc->dev, "failed to get rail sample: %d\n", ret); |
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return ret; |
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} |
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if (response.result) { |
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dev_err(&svc->dev, |
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"UniPro error while getting rail power sample (%d %d): %d\n", |
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rail_id, measurement_type, response.result); |
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switch (response.result) { |
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case GB_SVC_PWRMON_GET_SAMPLE_INVAL: |
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return -EINVAL; |
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case GB_SVC_PWRMON_GET_SAMPLE_NOSUPP: |
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return -ENOMSG; |
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default: |
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return -EREMOTEIO; |
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} |
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} |
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*value = le32_to_cpu(response.measurement); |
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return 0; |
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} |
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int gb_svc_pwrmon_intf_sample_get(struct gb_svc *svc, u8 intf_id, |
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u8 measurement_type, u32 *value) |
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{ |
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struct gb_svc_pwrmon_intf_sample_get_request request; |
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struct gb_svc_pwrmon_intf_sample_get_response response; |
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int ret; |
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request.intf_id = intf_id; |
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request.measurement_type = measurement_type; |
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ret = gb_operation_sync(svc->connection, |
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GB_SVC_TYPE_PWRMON_INTF_SAMPLE_GET, |
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&request, sizeof(request), |
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&response, sizeof(response)); |
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if (ret) { |
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dev_err(&svc->dev, "failed to get intf sample: %d\n", ret); |
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return ret; |
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} |
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if (response.result) { |
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dev_err(&svc->dev, |
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"UniPro error while getting intf power sample (%d %d): %d\n", |
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intf_id, measurement_type, response.result); |
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switch (response.result) { |
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case GB_SVC_PWRMON_GET_SAMPLE_INVAL: |
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return -EINVAL; |
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case GB_SVC_PWRMON_GET_SAMPLE_NOSUPP: |
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return -ENOMSG; |
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default: |
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return -EREMOTEIO; |
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} |
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} |
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*value = le32_to_cpu(response.measurement); |
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return 0; |
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} |
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static struct attribute *svc_attrs[] = { |
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&dev_attr_endo_id.attr, |
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&dev_attr_ap_intf_id.attr, |
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&dev_attr_intf_eject.attr, |
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&dev_attr_watchdog.attr, |
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&dev_attr_watchdog_action.attr, |
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NULL, |
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}; |
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ATTRIBUTE_GROUPS(svc); |
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int gb_svc_intf_device_id(struct gb_svc *svc, u8 intf_id, u8 device_id) |
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{ |
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struct gb_svc_intf_device_id_request request; |
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request.intf_id = intf_id; |
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request.device_id = device_id; |
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return gb_operation_sync(svc->connection, GB_SVC_TYPE_INTF_DEVICE_ID, |
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&request, sizeof(request), NULL, 0); |
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} |
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int gb_svc_intf_eject(struct gb_svc *svc, u8 intf_id) |
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{ |
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struct gb_svc_intf_eject_request request; |
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int ret; |
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request.intf_id = intf_id; |
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/* |
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* The pulse width for module release in svc is long so we need to |
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* increase the timeout so the operation will not return to soon. |
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*/ |
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ret = gb_operation_sync_timeout(svc->connection, |
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GB_SVC_TYPE_INTF_EJECT, &request, |
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sizeof(request), NULL, 0, |
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SVC_INTF_EJECT_TIMEOUT); |
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if (ret) { |
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dev_err(&svc->dev, "failed to eject interface %u\n", intf_id); |
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return ret; |
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} |
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return 0; |
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} |
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int gb_svc_intf_vsys_set(struct gb_svc *svc, u8 intf_id, bool enable) |
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{ |
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struct gb_svc_intf_vsys_request request; |
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struct gb_svc_intf_vsys_response response; |
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int type, ret; |
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request.intf_id = intf_id; |
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if (enable) |
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type = GB_SVC_TYPE_INTF_VSYS_ENABLE; |
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else |
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type = GB_SVC_TYPE_INTF_VSYS_DISABLE; |
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ret = gb_operation_sync(svc->connection, type, |
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&request, sizeof(request), |
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&response, sizeof(response)); |
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if (ret < 0) |
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return ret; |
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if (response.result_code != GB_SVC_INTF_VSYS_OK) |
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return -EREMOTEIO; |
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return 0; |
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} |
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int gb_svc_intf_refclk_set(struct gb_svc *svc, u8 intf_id, bool enable) |
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{ |
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struct gb_svc_intf_refclk_request request; |
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struct gb_svc_intf_refclk_response response; |
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int type, ret; |
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request.intf_id = intf_id; |
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if (enable) |
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type = GB_SVC_TYPE_INTF_REFCLK_ENABLE; |
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else |
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type = GB_SVC_TYPE_INTF_REFCLK_DISABLE; |
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ret = gb_operation_sync(svc->connection, type, |
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&request, sizeof(request), |
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&response, sizeof(response)); |
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if (ret < 0) |
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return ret; |
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if (response.result_code != GB_SVC_INTF_REFCLK_OK) |
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return -EREMOTEIO; |
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return 0; |
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} |
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int gb_svc_intf_unipro_set(struct gb_svc *svc, u8 intf_id, bool enable) |
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{ |
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struct gb_svc_intf_unipro_request request; |
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struct gb_svc_intf_unipro_response response; |
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int type, ret; |
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request.intf_id = intf_id; |
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if (enable) |
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type = GB_SVC_TYPE_INTF_UNIPRO_ENABLE; |
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else |
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type = GB_SVC_TYPE_INTF_UNIPRO_DISABLE; |
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ret = gb_operation_sync(svc->connection, type, |
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&request, sizeof(request), |
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&response, sizeof(response)); |
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if (ret < 0) |
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return ret; |
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if (response.result_code != GB_SVC_INTF_UNIPRO_OK) |
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return -EREMOTEIO; |
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return 0; |
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} |
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int gb_svc_intf_activate(struct gb_svc *svc, u8 intf_id, u8 *intf_type) |
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{ |
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struct gb_svc_intf_activate_request request; |
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struct gb_svc_intf_activate_response response; |
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int ret; |
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request.intf_id = intf_id; |
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ret = gb_operation_sync_timeout(svc->connection, |
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GB_SVC_TYPE_INTF_ACTIVATE, |
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&request, sizeof(request), |
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&response, sizeof(response), |
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SVC_INTF_ACTIVATE_TIMEOUT); |
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if (ret < 0) |
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return ret; |
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if (response.status != GB_SVC_OP_SUCCESS) { |
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dev_err(&svc->dev, "failed to activate interface %u: %u\n", |
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intf_id, response.status); |
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return -EREMOTEIO; |
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} |
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*intf_type = response.intf_type; |
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return 0; |
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} |
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int gb_svc_intf_resume(struct gb_svc *svc, u8 intf_id) |
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{ |
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struct gb_svc_intf_resume_request request; |
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struct gb_svc_intf_resume_response response; |
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int ret; |
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request.intf_id = intf_id; |
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ret = gb_operation_sync_timeout(svc->connection, |
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GB_SVC_TYPE_INTF_RESUME, |
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&request, sizeof(request), |
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&response, sizeof(response), |
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SVC_INTF_RESUME_TIMEOUT); |
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if (ret < 0) { |
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dev_err(&svc->dev, "failed to send interface resume %u: %d\n", |
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intf_id, ret); |
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return ret; |
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} |
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if (response.status != GB_SVC_OP_SUCCESS) { |
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dev_err(&svc->dev, "failed to resume interface %u: %u\n", |
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intf_id, response.status); |
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return -EREMOTEIO; |
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} |
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return 0; |
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} |
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int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector, |
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u32 *value) |
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{ |
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struct gb_svc_dme_peer_get_request request; |
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struct gb_svc_dme_peer_get_response response; |
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u16 result; |
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int ret; |
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request.intf_id = intf_id; |
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request.attr = cpu_to_le16(attr); |
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request.selector = cpu_to_le16(selector); |
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ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_DME_PEER_GET, |
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&request, sizeof(request), |
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&response, sizeof(response)); |
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if (ret) { |
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dev_err(&svc->dev, "failed to get DME attribute (%u 0x%04x %u): %d\n", |
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intf_id, attr, selector, ret); |
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return ret; |
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} |
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result = le16_to_cpu(response.result_code); |
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if (result) { |
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dev_err(&svc->dev, "UniPro error while getting DME attribute (%u 0x%04x %u): %u\n", |
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intf_id, attr, selector, result); |
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return -EREMOTEIO; |
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} |
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if (value) |
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*value = le32_to_cpu(response.attr_value); |
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|
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return 0; |
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} |
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int gb_svc_dme_peer_set(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector, |
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u32 value) |
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{ |
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struct gb_svc_dme_peer_set_request request; |
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struct gb_svc_dme_peer_set_response response; |
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u16 result; |
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int ret; |
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request.intf_id = intf_id; |
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request.attr = cpu_to_le16(attr); |
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request.selector = cpu_to_le16(selector); |
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request.value = cpu_to_le32(value); |
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|
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ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_DME_PEER_SET, |
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&request, sizeof(request), |
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&response, sizeof(response)); |
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if (ret) { |
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dev_err(&svc->dev, "failed to set DME attribute (%u 0x%04x %u %u): %d\n", |
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intf_id, attr, selector, value, ret); |
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return ret; |
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} |
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|
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result = le16_to_cpu(response.result_code); |
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if (result) { |
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dev_err(&svc->dev, "UniPro error while setting DME attribute (%u 0x%04x %u %u): %u\n", |
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intf_id, attr, selector, value, result); |
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return -EREMOTEIO; |
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} |
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|
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return 0; |
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} |
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|
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int gb_svc_connection_create(struct gb_svc *svc, |
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u8 intf1_id, u16 cport1_id, |
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u8 intf2_id, u16 cport2_id, |
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u8 cport_flags) |
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{ |
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struct gb_svc_conn_create_request request; |
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|
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request.intf1_id = intf1_id; |
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request.cport1_id = cpu_to_le16(cport1_id); |
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request.intf2_id = intf2_id; |
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request.cport2_id = cpu_to_le16(cport2_id); |
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request.tc = 0; /* TC0 */ |
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request.flags = cport_flags; |
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|
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return gb_operation_sync(svc->connection, GB_SVC_TYPE_CONN_CREATE, |
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&request, sizeof(request), NULL, 0); |
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} |
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|
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void gb_svc_connection_destroy(struct gb_svc *svc, u8 intf1_id, u16 cport1_id, |
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u8 intf2_id, u16 cport2_id) |
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{ |
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struct gb_svc_conn_destroy_request request; |
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struct gb_connection *connection = svc->connection; |
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int ret; |
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|
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request.intf1_id = intf1_id; |
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request.cport1_id = cpu_to_le16(cport1_id); |
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request.intf2_id = intf2_id; |
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request.cport2_id = cpu_to_le16(cport2_id); |
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|
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ret = gb_operation_sync(connection, GB_SVC_TYPE_CONN_DESTROY, |
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&request, sizeof(request), NULL, 0); |
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if (ret) { |
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dev_err(&svc->dev, "failed to destroy connection (%u:%u %u:%u): %d\n", |
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intf1_id, cport1_id, intf2_id, cport2_id, ret); |
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} |
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} |
|
|
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/* Creates bi-directional routes between the devices */ |
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int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id, |
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u8 intf2_id, u8 dev2_id) |
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{ |
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struct gb_svc_route_create_request request; |
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|
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request.intf1_id = intf1_id; |
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request.dev1_id = dev1_id; |
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request.intf2_id = intf2_id; |
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request.dev2_id = dev2_id; |
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|
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return gb_operation_sync(svc->connection, GB_SVC_TYPE_ROUTE_CREATE, |
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&request, sizeof(request), NULL, 0); |
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} |
|
|
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/* Destroys bi-directional routes between the devices */ |
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void gb_svc_route_destroy(struct gb_svc *svc, u8 intf1_id, u8 intf2_id) |
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{ |
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struct gb_svc_route_destroy_request request; |
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int ret; |
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|
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request.intf1_id = intf1_id; |
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request.intf2_id = intf2_id; |
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|
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ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_ROUTE_DESTROY, |
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&request, sizeof(request), NULL, 0); |
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if (ret) { |
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dev_err(&svc->dev, "failed to destroy route (%u %u): %d\n", |
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intf1_id, intf2_id, ret); |
|
} |
|
} |
|
|
|
int gb_svc_intf_set_power_mode(struct gb_svc *svc, u8 intf_id, u8 hs_series, |
|
u8 tx_mode, u8 tx_gear, u8 tx_nlanes, |
|
u8 tx_amplitude, u8 tx_hs_equalizer, |
|
u8 rx_mode, u8 rx_gear, u8 rx_nlanes, |
|
u8 flags, u32 quirks, |
|
struct gb_svc_l2_timer_cfg *local, |
|
struct gb_svc_l2_timer_cfg *remote) |
|
{ |
|
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 = hs_series; |
|
request.tx_mode = tx_mode; |
|
request.tx_gear = tx_gear; |
|
request.tx_nlanes = tx_nlanes; |
|
request.tx_amplitude = tx_amplitude; |
|
request.tx_hs_equalizer = tx_hs_equalizer; |
|
request.rx_mode = rx_mode; |
|
request.rx_gear = rx_gear; |
|
request.rx_nlanes = rx_nlanes; |
|
request.flags = flags; |
|
request.quirks = cpu_to_le32(quirks); |
|
if (local) |
|
request.local_l2timerdata = *local; |
|
if (remote) |
|
request.remote_l2timerdata = *remote; |
|
|
|
ret = gb_operation_sync(svc->connection, GB_SVC_TYPE_INTF_SET_PWRM, |
|
&request, sizeof(request), |
|
&response, sizeof(response)); |
|
if (ret < 0) |
|
return ret; |
|
|
|
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; |
|
} |
|
|
|
return 0; |
|
} |
|
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); |
|
} |
|
|
|
static int gb_svc_version_request(struct gb_operation *op) |
|
{ |
|
struct gb_connection *connection = op->connection; |
|
struct gb_svc *svc = gb_connection_get_data(connection); |
|
struct gb_svc_version_request *request; |
|
struct gb_svc_version_response *response; |
|
|
|
if (op->request->payload_size < sizeof(*request)) { |
|
dev_err(&svc->dev, "short version request (%zu < %zu)\n", |
|
op->request->payload_size, |
|
sizeof(*request)); |
|
return -EINVAL; |
|
} |
|
|
|
request = op->request->payload; |
|
|
|
if (request->major > GB_SVC_VERSION_MAJOR) { |
|
dev_warn(&svc->dev, "unsupported major version (%u > %u)\n", |
|
request->major, GB_SVC_VERSION_MAJOR); |
|
return -ENOTSUPP; |
|
} |
|
|
|
svc->protocol_major = request->major; |
|
svc->protocol_minor = request->minor; |
|
|
|
if (!gb_operation_response_alloc(op, sizeof(*response), GFP_KERNEL)) |
|
return -ENOMEM; |
|
|
|
response = op->response->payload; |
|
response->major = svc->protocol_major; |
|
response->minor = svc->protocol_minor; |
|
|
|
return 0; |
|
} |
|
|
|
static ssize_t pwr_debugfs_voltage_read(struct file *file, char __user *buf, |
|
size_t len, loff_t *offset) |
|
{ |
|
struct svc_debugfs_pwrmon_rail *pwrmon_rails = |
|
file_inode(file)->i_private; |
|
struct gb_svc *svc = pwrmon_rails->svc; |
|
int ret, desc; |
|
u32 value; |
|
char buff[16]; |
|
|
|
ret = gb_svc_pwrmon_sample_get(svc, pwrmon_rails->id, |
|
GB_SVC_PWRMON_TYPE_VOL, &value); |
|
if (ret) { |
|
dev_err(&svc->dev, |
|
"failed to get voltage sample %u: %d\n", |
|
pwrmon_rails->id, ret); |
|
return ret; |
|
} |
|
|
|
desc = scnprintf(buff, sizeof(buff), "%u\n", value); |
|
|
|
return simple_read_from_buffer(buf, len, offset, buff, desc); |
|
} |
|
|
|
static ssize_t pwr_debugfs_current_read(struct file *file, char __user *buf, |
|
size_t len, loff_t *offset) |
|
{ |
|
struct svc_debugfs_pwrmon_rail *pwrmon_rails = |
|
file_inode(file)->i_private; |
|
struct gb_svc *svc = pwrmon_rails->svc; |
|
int ret, desc; |
|
u32 value; |
|
char buff[16]; |
|
|
|
ret = gb_svc_pwrmon_sample_get(svc, pwrmon_rails->id, |
|
GB_SVC_PWRMON_TYPE_CURR, &value); |
|
if (ret) { |
|
dev_err(&svc->dev, |
|
"failed to get current sample %u: %d\n", |
|
pwrmon_rails->id, ret); |
|
return ret; |
|
} |
|
|
|
desc = scnprintf(buff, sizeof(buff), "%u\n", value); |
|
|
|
return simple_read_from_buffer(buf, len, offset, buff, desc); |
|
} |
|
|
|
static ssize_t pwr_debugfs_power_read(struct file *file, char __user *buf, |
|
size_t len, loff_t *offset) |
|
{ |
|
struct svc_debugfs_pwrmon_rail *pwrmon_rails = |
|
file_inode(file)->i_private; |
|
struct gb_svc *svc = pwrmon_rails->svc; |
|
int ret, desc; |
|
u32 value; |
|
char buff[16]; |
|
|
|
ret = gb_svc_pwrmon_sample_get(svc, pwrmon_rails->id, |
|
GB_SVC_PWRMON_TYPE_PWR, &value); |
|
if (ret) { |
|
dev_err(&svc->dev, "failed to get power sample %u: %d\n", |
|
pwrmon_rails->id, ret); |
|
return ret; |
|
} |
|
|
|
desc = scnprintf(buff, sizeof(buff), "%u\n", value); |
|
|
|
return simple_read_from_buffer(buf, len, offset, buff, desc); |
|
} |
|
|
|
static const struct file_operations pwrmon_debugfs_voltage_fops = { |
|
.read = pwr_debugfs_voltage_read, |
|
}; |
|
|
|
static const struct file_operations pwrmon_debugfs_current_fops = { |
|
.read = pwr_debugfs_current_read, |
|
}; |
|
|
|
static const struct file_operations pwrmon_debugfs_power_fops = { |
|
.read = pwr_debugfs_power_read, |
|
}; |
|
|
|
static void gb_svc_pwrmon_debugfs_init(struct gb_svc *svc) |
|
{ |
|
int i; |
|
size_t bufsize; |
|
struct dentry *dent; |
|
struct gb_svc_pwrmon_rail_names_get_response *rail_names; |
|
u8 rail_count; |
|
|
|
dent = debugfs_create_dir("pwrmon", svc->debugfs_dentry); |
|
if (IS_ERR_OR_NULL(dent)) |
|
return; |
|
|
|
if (gb_svc_pwrmon_rail_count_get(svc, &rail_count)) |
|
goto err_pwrmon_debugfs; |
|
|
|
if (!rail_count || rail_count > GB_SVC_PWRMON_MAX_RAIL_COUNT) |
|
goto err_pwrmon_debugfs; |
|
|
|
bufsize = sizeof(*rail_names) + |
|
GB_SVC_PWRMON_RAIL_NAME_BUFSIZE * rail_count; |
|
|
|
rail_names = kzalloc(bufsize, GFP_KERNEL); |
|
if (!rail_names) |
|
goto err_pwrmon_debugfs; |
|
|
|
svc->pwrmon_rails = kcalloc(rail_count, sizeof(*svc->pwrmon_rails), |
|
GFP_KERNEL); |
|
if (!svc->pwrmon_rails) |
|
goto err_pwrmon_debugfs_free; |
|
|
|
if (gb_svc_pwrmon_rail_names_get(svc, rail_names, bufsize)) |
|
goto err_pwrmon_debugfs_free; |
|
|
|
for (i = 0; i < rail_count; i++) { |
|
struct dentry *dir; |
|
struct svc_debugfs_pwrmon_rail *rail = &svc->pwrmon_rails[i]; |
|
char fname[GB_SVC_PWRMON_RAIL_NAME_BUFSIZE]; |
|
|
|
snprintf(fname, sizeof(fname), "%s", |
|
(char *)&rail_names->name[i]); |
|
|
|
rail->id = i; |
|
rail->svc = svc; |
|
|
|
dir = debugfs_create_dir(fname, dent); |
|
debugfs_create_file("voltage_now", 0444, dir, rail, |
|
&pwrmon_debugfs_voltage_fops); |
|
debugfs_create_file("current_now", 0444, dir, rail, |
|
&pwrmon_debugfs_current_fops); |
|
debugfs_create_file("power_now", 0444, dir, rail, |
|
&pwrmon_debugfs_power_fops); |
|
} |
|
|
|
kfree(rail_names); |
|
return; |
|
|
|
err_pwrmon_debugfs_free: |
|
kfree(rail_names); |
|
kfree(svc->pwrmon_rails); |
|
svc->pwrmon_rails = NULL; |
|
|
|
err_pwrmon_debugfs: |
|
debugfs_remove(dent); |
|
} |
|
|
|
static void gb_svc_debugfs_init(struct gb_svc *svc) |
|
{ |
|
svc->debugfs_dentry = debugfs_create_dir(dev_name(&svc->dev), |
|
gb_debugfs_get()); |
|
gb_svc_pwrmon_debugfs_init(svc); |
|
} |
|
|
|
static void gb_svc_debugfs_exit(struct gb_svc *svc) |
|
{ |
|
debugfs_remove_recursive(svc->debugfs_dentry); |
|
kfree(svc->pwrmon_rails); |
|
svc->pwrmon_rails = NULL; |
|
} |
|
|
|
static int gb_svc_hello(struct gb_operation *op) |
|
{ |
|
struct gb_connection *connection = op->connection; |
|
struct gb_svc *svc = gb_connection_get_data(connection); |
|
struct gb_svc_hello_request *hello_request; |
|
int ret; |
|
|
|
if (op->request->payload_size < sizeof(*hello_request)) { |
|
dev_warn(&svc->dev, "short hello request (%zu < %zu)\n", |
|
op->request->payload_size, |
|
sizeof(*hello_request)); |
|
return -EINVAL; |
|
} |
|
|
|
hello_request = op->request->payload; |
|
svc->endo_id = le16_to_cpu(hello_request->endo_id); |
|
svc->ap_intf_id = hello_request->interface_id; |
|
|
|
ret = device_add(&svc->dev); |
|
if (ret) { |
|
dev_err(&svc->dev, "failed to register svc device: %d\n", ret); |
|
return ret; |
|
} |
|
|
|
ret = gb_svc_watchdog_create(svc); |
|
if (ret) { |
|
dev_err(&svc->dev, "failed to create watchdog: %d\n", ret); |
|
goto err_unregister_device; |
|
} |
|
|
|
gb_svc_debugfs_init(svc); |
|
|
|
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, |
|
u8 intf_id) |
|
{ |
|
struct gb_host_device *hd = svc->hd; |
|
struct gb_module *module; |
|
size_t num_interfaces; |
|
u8 module_id; |
|
|
|
list_for_each_entry(module, &hd->modules, hd_node) { |
|
module_id = module->module_id; |
|
num_interfaces = module->num_interfaces; |
|
|
|
if (intf_id >= module_id && |
|
intf_id < module_id + num_interfaces) { |
|
return module->interfaces[intf_id - module_id]; |
|
} |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static struct gb_module *gb_svc_module_lookup(struct gb_svc *svc, u8 module_id) |
|
{ |
|
struct gb_host_device *hd = svc->hd; |
|
struct gb_module *module; |
|
|
|
list_for_each_entry(module, &hd->modules, hd_node) { |
|
if (module->module_id == module_id) |
|
return module; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static void gb_svc_process_hello_deferred(struct gb_operation *operation) |
|
{ |
|
struct gb_connection *connection = operation->connection; |
|
struct gb_svc *svc = gb_connection_get_data(connection); |
|
int ret; |
|
|
|
/* |
|
* XXX This is a hack/work-around to reconfigure the APBridgeA-Switch |
|
* link to PWM G2, 1 Lane, Slow Auto, so that it has sufficient |
|
* bandwidth for 3 audio streams plus boot-over-UniPro of a hot-plugged |
|
* module. |
|
* |
|
* The code should be removed once SW-2217, Heuristic for UniPro |
|
* Power Mode Changes is resolved. |
|
*/ |
|
ret = gb_svc_intf_set_power_mode(svc, svc->ap_intf_id, |
|
GB_SVC_UNIPRO_HS_SERIES_A, |
|
GB_SVC_UNIPRO_SLOW_AUTO_MODE, |
|
2, 1, |
|
GB_SVC_SMALL_AMPLITUDE, |
|
GB_SVC_NO_DE_EMPHASIS, |
|
GB_SVC_UNIPRO_SLOW_AUTO_MODE, |
|
2, 1, |
|
0, 0, |
|
NULL, NULL); |
|
|
|
if (ret) |
|
dev_warn(&svc->dev, |
|
"power mode change failed on AP to switch link: %d\n", |
|
ret); |
|
} |
|
|
|
static void gb_svc_process_module_inserted(struct gb_operation *operation) |
|
{ |
|
struct gb_svc_module_inserted_request *request; |
|
struct gb_connection *connection = operation->connection; |
|
struct gb_svc *svc = gb_connection_get_data(connection); |
|
struct gb_host_device *hd = svc->hd; |
|
struct gb_module *module; |
|
size_t num_interfaces; |
|
u8 module_id; |
|
u16 flags; |
|
int ret; |
|
|
|
/* The request message size has already been verified. */ |
|
request = operation->request->payload; |
|
module_id = request->primary_intf_id; |
|
num_interfaces = request->intf_count; |
|
flags = le16_to_cpu(request->flags); |
|
|
|
dev_dbg(&svc->dev, "%s - id = %u, num_interfaces = %zu, flags = 0x%04x\n", |
|
__func__, module_id, num_interfaces, flags); |
|
|
|
if (flags & GB_SVC_MODULE_INSERTED_FLAG_NO_PRIMARY) { |
|
dev_warn(&svc->dev, "no primary interface detected on module %u\n", |
|
module_id); |
|
} |
|
|
|
module = gb_svc_module_lookup(svc, module_id); |
|
if (module) { |
|
dev_warn(&svc->dev, "unexpected module-inserted event %u\n", |
|
module_id); |
|
return; |
|
} |
|
|
|
module = gb_module_create(hd, module_id, num_interfaces); |
|
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_module_removed(struct gb_operation *operation) |
|
{ |
|
struct gb_svc_module_removed_request *request; |
|
struct gb_connection *connection = operation->connection; |
|
struct gb_svc *svc = gb_connection_get_data(connection); |
|
struct gb_module *module; |
|
u8 module_id; |
|
|
|
/* The request message size has already been verified. */ |
|
request = operation->request->payload; |
|
module_id = request->primary_intf_id; |
|
|
|
dev_dbg(&svc->dev, "%s - id = %u\n", __func__, module_id); |
|
|
|
module = gb_svc_module_lookup(svc, module_id); |
|
if (!module) { |
|
dev_warn(&svc->dev, "unexpected module-removed event %u\n", |
|
module_id); |
|
return; |
|
} |
|
|
|
module->disconnected = true; |
|
|
|
gb_module_del(module); |
|
list_del(&module->hd_node); |
|
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; |
|
struct gb_connection *connection = operation->connection; |
|
struct gb_svc *svc = gb_connection_get_data(connection); |
|
struct gb_interface *intf; |
|
u8 intf_id; |
|
u16 result_code; |
|
u32 mailbox; |
|
|
|
/* The request message size has already been verified. */ |
|
request = operation->request->payload; |
|
intf_id = request->intf_id; |
|
result_code = le16_to_cpu(request->result_code); |
|
mailbox = le32_to_cpu(request->mailbox); |
|
|
|
dev_dbg(&svc->dev, "%s - id = %u, result = 0x%04x, mailbox = 0x%08x\n", |
|
__func__, intf_id, result_code, mailbox); |
|
|
|
intf = gb_svc_interface_lookup(svc, intf_id); |
|
if (!intf) { |
|
dev_warn(&svc->dev, "unexpected mailbox event %u\n", intf_id); |
|
return; |
|
} |
|
|
|
gb_interface_mailbox_event(intf, result_code, mailbox); |
|
} |
|
|
|
static void gb_svc_process_deferred_request(struct work_struct *work) |
|
{ |
|
struct gb_svc_deferred_request *dr; |
|
struct gb_operation *operation; |
|
struct gb_svc *svc; |
|
u8 type; |
|
|
|
dr = container_of(work, struct gb_svc_deferred_request, work); |
|
operation = dr->operation; |
|
svc = gb_connection_get_data(operation->connection); |
|
type = operation->request->header->type; |
|
|
|
switch (type) { |
|
case GB_SVC_TYPE_SVC_HELLO: |
|
gb_svc_process_hello_deferred(operation); |
|
break; |
|
case GB_SVC_TYPE_MODULE_INSERTED: |
|
gb_svc_process_module_inserted(operation); |
|
break; |
|
case GB_SVC_TYPE_MODULE_REMOVED: |
|
gb_svc_process_module_removed(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); |
|
} |
|
|
|
gb_operation_put(operation); |
|
kfree(dr); |
|
} |
|
|
|
static int gb_svc_queue_deferred_request(struct gb_operation *operation) |
|
{ |
|
struct gb_svc *svc = gb_connection_get_data(operation->connection); |
|
struct gb_svc_deferred_request *dr; |
|
|
|
dr = kmalloc(sizeof(*dr), GFP_KERNEL); |
|
if (!dr) |
|
return -ENOMEM; |
|
|
|
gb_operation_get(operation); |
|
|
|
dr->operation = operation; |
|
INIT_WORK(&dr->work, gb_svc_process_deferred_request); |
|
|
|
queue_work(svc->wq, &dr->work); |
|
|
|
return 0; |
|
} |
|
|
|
static int gb_svc_intf_reset_recv(struct gb_operation *op) |
|
{ |
|
struct gb_svc *svc = gb_connection_get_data(op->connection); |
|
struct gb_message *request = op->request; |
|
struct gb_svc_intf_reset_request *reset; |
|
|
|
if (request->payload_size < sizeof(*reset)) { |
|
dev_warn(&svc->dev, "short reset request received (%zu < %zu)\n", |
|
request->payload_size, sizeof(*reset)); |
|
return -EINVAL; |
|
} |
|
reset = request->payload; |
|
|
|
/* FIXME Reset the interface here */ |
|
|
|
return 0; |
|
} |
|
|
|
static int gb_svc_module_inserted_recv(struct gb_operation *op) |
|
{ |
|
struct gb_svc *svc = gb_connection_get_data(op->connection); |
|
struct gb_svc_module_inserted_request *request; |
|
|
|
if (op->request->payload_size < sizeof(*request)) { |
|
dev_warn(&svc->dev, "short module-inserted 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->primary_intf_id); |
|
|
|
return gb_svc_queue_deferred_request(op); |
|
} |
|
|
|
static int gb_svc_module_removed_recv(struct gb_operation *op) |
|
{ |
|
struct gb_svc *svc = gb_connection_get_data(op->connection); |
|
struct gb_svc_module_removed_request *request; |
|
|
|
if (op->request->payload_size < sizeof(*request)) { |
|
dev_warn(&svc->dev, "short module-removed 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->primary_intf_id); |
|
|
|
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); |
|
struct gb_svc_intf_mailbox_event_request *request; |
|
|
|
if (op->request->payload_size < sizeof(*request)) { |
|
dev_warn(&svc->dev, "short mailbox 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_request_handler(struct gb_operation *op) |
|
{ |
|
struct gb_connection *connection = op->connection; |
|
struct gb_svc *svc = gb_connection_get_data(connection); |
|
u8 type = op->type; |
|
int ret = 0; |
|
|
|
/* |
|
* SVC requests need to follow a specific order (at least initially) and |
|
* below code takes care of enforcing that. The expected order is: |
|
* - PROTOCOL_VERSION |
|
* - SVC_HELLO |
|
* - Any other request, but the earlier two. |
|
* |
|
* Incoming requests are guaranteed to be serialized and so we don't |
|
* need to protect 'state' for any races. |
|
*/ |
|
switch (type) { |
|
case GB_SVC_TYPE_PROTOCOL_VERSION: |
|
if (svc->state != GB_SVC_STATE_RESET) |
|
ret = -EINVAL; |
|
break; |
|
case GB_SVC_TYPE_SVC_HELLO: |
|
if (svc->state != GB_SVC_STATE_PROTOCOL_VERSION) |
|
ret = -EINVAL; |
|
break; |
|
default: |
|
if (svc->state != GB_SVC_STATE_SVC_HELLO) |
|
ret = -EINVAL; |
|
break; |
|
} |
|
|
|
if (ret) { |
|
dev_warn(&svc->dev, "unexpected request 0x%02x received (state %u)\n", |
|
type, svc->state); |
|
return ret; |
|
} |
|
|
|
switch (type) { |
|
case GB_SVC_TYPE_PROTOCOL_VERSION: |
|
ret = gb_svc_version_request(op); |
|
if (!ret) |
|
svc->state = GB_SVC_STATE_PROTOCOL_VERSION; |
|
return ret; |
|
case GB_SVC_TYPE_SVC_HELLO: |
|
ret = gb_svc_hello(op); |
|
if (!ret) |
|
svc->state = GB_SVC_STATE_SVC_HELLO; |
|
return ret; |
|
case GB_SVC_TYPE_INTF_RESET: |
|
return gb_svc_intf_reset_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 void gb_svc_release(struct device *dev) |
|
{ |
|
struct gb_svc *svc = to_gb_svc(dev); |
|
|
|
if (svc->connection) |
|
gb_connection_destroy(svc->connection); |
|
ida_destroy(&svc->device_id_map); |
|
destroy_workqueue(svc->wq); |
|
kfree(svc); |
|
} |
|
|
|
struct device_type greybus_svc_type = { |
|
.name = "greybus_svc", |
|
.release = gb_svc_release, |
|
}; |
|
|
|
struct gb_svc *gb_svc_create(struct gb_host_device *hd) |
|
{ |
|
struct gb_svc *svc; |
|
|
|
svc = kzalloc(sizeof(*svc), GFP_KERNEL); |
|
if (!svc) |
|
return NULL; |
|
|
|
svc->wq = alloc_workqueue("%s:svc", WQ_UNBOUND, 1, dev_name(&hd->dev)); |
|
if (!svc->wq) { |
|
kfree(svc); |
|
return NULL; |
|
} |
|
|
|
svc->dev.parent = &hd->dev; |
|
svc->dev.bus = &greybus_bus_type; |
|
svc->dev.type = &greybus_svc_type; |
|
svc->dev.groups = svc_groups; |
|
svc->dev.dma_mask = svc->dev.parent->dma_mask; |
|
device_initialize(&svc->dev); |
|
|
|
dev_set_name(&svc->dev, "%d-svc", hd->bus_id); |
|
|
|
ida_init(&svc->device_id_map); |
|
svc->state = GB_SVC_STATE_RESET; |
|
svc->hd = hd; |
|
|
|
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_put_device; |
|
} |
|
|
|
gb_connection_set_data(svc->connection, svc); |
|
|
|
return svc; |
|
|
|
err_put_device: |
|
put_device(&svc->dev); |
|
return NULL; |
|
} |
|
|
|
int gb_svc_add(struct gb_svc *svc) |
|
{ |
|
int ret; |
|
|
|
/* |
|
* The SVC protocol is currently driven by the SVC, so the SVC device |
|
* is added from the connection request handler when enough |
|
* information has been received. |
|
*/ |
|
ret = gb_connection_enable(svc->connection); |
|
if (ret) |
|
return ret; |
|
|
|
return 0; |
|
} |
|
|
|
static void gb_svc_remove_modules(struct gb_svc *svc) |
|
{ |
|
struct gb_host_device *hd = svc->hd; |
|
struct gb_module *module, *tmp; |
|
|
|
list_for_each_entry_safe(module, tmp, &hd->modules, hd_node) { |
|
gb_module_del(module); |
|
list_del(&module->hd_node); |
|
gb_module_put(module); |
|
} |
|
} |
|
|
|
void gb_svc_del(struct gb_svc *svc) |
|
{ |
|
gb_connection_disable_rx(svc->connection); |
|
|
|
/* |
|
* The SVC device may have been registered from the request handler. |
|
*/ |
|
if (device_is_registered(&svc->dev)) { |
|
gb_svc_debugfs_exit(svc); |
|
gb_svc_watchdog_destroy(svc); |
|
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) |
|
{ |
|
put_device(&svc->dev); |
|
}
|
|
|