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soc: qcom: Introduce Protection Domain Restart helpers

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Qualcomm SoCs (starting with MSM8998) allow for multiple protection domains
to run on the same Q6 sub-system. This allows for services like ATH10K WLAN
FW to have their own separate address space and crash/recover without
disrupting the modem and other PDs running on the same sub-system. The PDR
helpers introduces an abstraction that allows for tracking/controlling the
life cycle of protection domains running on various Q6 sub-systems.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
Link: https://lore.kernel.org/r/20200312120842.21991-2-sibis@codeaurora.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Sibi Sankar 2020-03-12 17:38:40 +05:30 committed by Bjorn Andersson
parent 04fc94be4a
commit fbe639b44a
6 changed files with 1171 additions and 0 deletions
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4
drivers/soc/qcom/Kconfig
View File

@ -76,6 +76,10 @@ config QCOM_OCMEM
requirements. This is typically used by the GPU, camera/video, and
audio components on some Snapdragon SoCs.
config QCOM_PDR_HELPERS
tristate
select QCOM_QMI_HELPERS
config QCOM_PM
bool "Qualcomm Power Management"
depends on ARCH_QCOM && !ARM64

1
drivers/soc/qcom/Makefile
View File

@ -7,6 +7,7 @@ obj-$(CONFIG_QCOM_GLINK_SSR) += glink_ssr.o
obj-$(CONFIG_QCOM_GSBI) += qcom_gsbi.o
obj-$(CONFIG_QCOM_MDT_LOADER) += mdt_loader.o
obj-$(CONFIG_QCOM_OCMEM) += ocmem.o
obj-$(CONFIG_QCOM_PDR_HELPERS) += pdr_interface.o
obj-$(CONFIG_QCOM_PM) += spm.o
obj-$(CONFIG_QCOM_QMI_HELPERS) += qmi_helpers.o
qmi_helpers-y += qmi_encdec.o qmi_interface.o

757
drivers/soc/qcom/pdr_interface.c Normal file
View File

@ -0,0 +1,757 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020 The Linux Foundation. All rights reserved.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/workqueue.h>
#include "pdr_internal.h"
struct pdr_service {
char service_name[SERVREG_NAME_LENGTH + 1];
char service_path[SERVREG_NAME_LENGTH + 1];
struct sockaddr_qrtr addr;
unsigned int instance;
unsigned int service;
u8 service_data_valid;
u32 service_data;
int state;
bool need_notifier_register;
bool need_notifier_remove;
bool need_locator_lookup;
bool service_connected;
struct list_head node;
};
struct pdr_handle {
struct qmi_handle locator_hdl;
struct qmi_handle notifier_hdl;
struct sockaddr_qrtr locator_addr;
struct list_head lookups;
struct list_head indack_list;
/* control access to pdr lookup/indack lists */
struct mutex list_lock;
/* serialize pd status invocation */
struct mutex status_lock;
/* control access to the locator state */
struct mutex lock;
bool locator_init_complete;
struct work_struct locator_work;
struct work_struct notifier_work;
struct work_struct indack_work;
struct workqueue_struct *notifier_wq;
struct workqueue_struct *indack_wq;
void (*status)(int state, char *service_path, void *priv);
void *priv;
};
struct pdr_list_node {
enum servreg_service_state curr_state;
u16 transaction_id;
struct pdr_service *pds;
struct list_head node;
};
static int pdr_locator_new_server(struct qmi_handle *qmi,
struct qmi_service *svc)
{
struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
locator_hdl);
struct pdr_service *pds;
/* Create a local client port for QMI communication */
pdr->locator_addr.sq_family = AF_QIPCRTR;
pdr->locator_addr.sq_node = svc->node;
pdr->locator_addr.sq_port = svc->port;
mutex_lock(&pdr->lock);
pdr->locator_init_complete = true;
mutex_unlock(&pdr->lock);
/* Service pending lookup requests */
mutex_lock(&pdr->list_lock);
list_for_each_entry(pds, &pdr->lookups, node) {
if (pds->need_locator_lookup)
schedule_work(&pdr->locator_work);
}
mutex_unlock(&pdr->list_lock);
return 0;
}
static void pdr_locator_del_server(struct qmi_handle *qmi,
struct qmi_service *svc)
{
struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
locator_hdl);
mutex_lock(&pdr->lock);
pdr->locator_init_complete = false;
mutex_unlock(&pdr->lock);
pdr->locator_addr.sq_node = 0;
pdr->locator_addr.sq_port = 0;
}
static struct qmi_ops pdr_locator_ops = {
.new_server = pdr_locator_new_server,
.del_server = pdr_locator_del_server,
};
static int pdr_register_listener(struct pdr_handle *pdr,
struct pdr_service *pds,
bool enable)
{
struct servreg_register_listener_resp resp;
struct servreg_register_listener_req req;
struct qmi_txn txn;
int ret;
ret = qmi_txn_init(&pdr->notifier_hdl, &txn,
servreg_register_listener_resp_ei,
&resp);
if (ret < 0)
return ret;
req.enable = enable;
strcpy(req.service_path, pds->service_path);
ret = qmi_send_request(&pdr->notifier_hdl, &pds->addr,
&txn, SERVREG_REGISTER_LISTENER_REQ,
SERVREG_REGISTER_LISTENER_REQ_LEN,
servreg_register_listener_req_ei,
&req);
if (ret < 0) {
qmi_txn_cancel(&txn);
return ret;
}
ret = qmi_txn_wait(&txn, 5 * HZ);
if (ret < 0) {
pr_err("PDR: %s register listener txn wait failed: %d\n",
pds->service_path, ret);
return ret;
}
if (resp.resp.result != QMI_RESULT_SUCCESS_V01) {
pr_err("PDR: %s register listener failed: 0x%x\n",
pds->service_path, resp.resp.error);
return ret;
}
if ((int)resp.curr_state < INT_MIN || (int)resp.curr_state > INT_MAX)
pr_err("PDR: %s notification state invalid: 0x%x\n",
pds->service_path, resp.curr_state);
pds->state = resp.curr_state;
return 0;
}
static void pdr_notifier_work(struct work_struct *work)
{
struct pdr_handle *pdr = container_of(work, struct pdr_handle,
notifier_work);
struct pdr_service *pds;
int ret;
mutex_lock(&pdr->list_lock);
list_for_each_entry(pds, &pdr->lookups, node) {
if (pds->service_connected) {
if (!pds->need_notifier_register)
continue;
pds->need_notifier_register = false;
ret = pdr_register_listener(pdr, pds, true);
if (ret < 0)
pds->state = SERVREG_SERVICE_STATE_DOWN;
} else {
if (!pds->need_notifier_remove)
continue;
pds->need_notifier_remove = false;
pds->state = SERVREG_SERVICE_STATE_DOWN;
}
mutex_lock(&pdr->status_lock);
pdr->status(pds->state, pds->service_path, pdr->priv);
mutex_unlock(&pdr->status_lock);
}
mutex_unlock(&pdr->list_lock);
}
static int pdr_notifier_new_server(struct qmi_handle *qmi,
struct qmi_service *svc)
{
struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
notifier_hdl);
struct pdr_service *pds;
mutex_lock(&pdr->list_lock);
list_for_each_entry(pds, &pdr->lookups, node) {
if (pds->service == svc->service &&
pds->instance == svc->instance) {
pds->service_connected = true;
pds->need_notifier_register = true;
pds->addr.sq_family = AF_QIPCRTR;
pds->addr.sq_node = svc->node;
pds->addr.sq_port = svc->port;
queue_work(pdr->notifier_wq, &pdr->notifier_work);
}
}
mutex_unlock(&pdr->list_lock);
return 0;
}
static void pdr_notifier_del_server(struct qmi_handle *qmi,
struct qmi_service *svc)
{
struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
notifier_hdl);
struct pdr_service *pds;
mutex_lock(&pdr->list_lock);
list_for_each_entry(pds, &pdr->lookups, node) {
if (pds->service == svc->service &&
pds->instance == svc->instance) {
pds->service_connected = false;
pds->need_notifier_remove = true;
pds->addr.sq_node = 0;
pds->addr.sq_port = 0;
queue_work(pdr->notifier_wq, &pdr->notifier_work);
}
}
mutex_unlock(&pdr->list_lock);
}
static struct qmi_ops pdr_notifier_ops = {
.new_server = pdr_notifier_new_server,
.del_server = pdr_notifier_del_server,
};
static int pdr_send_indack_msg(struct pdr_handle *pdr, struct pdr_service *pds,
u16 tid)
{
struct servreg_set_ack_resp resp;
struct servreg_set_ack_req req;
struct qmi_txn txn;
int ret;
ret = qmi_txn_init(&pdr->notifier_hdl, &txn, servreg_set_ack_resp_ei,
&resp);
if (ret < 0)
return ret;
req.transaction_id = tid;
strcpy(req.service_path, pds->service_path);
ret = qmi_send_request(&pdr->notifier_hdl, &pds->addr,
&txn, SERVREG_SET_ACK_REQ,
SERVREG_SET_ACK_REQ_LEN,
servreg_set_ack_req_ei,
&req);
/* Skip waiting for response */
qmi_txn_cancel(&txn);
return ret;
}
static void pdr_indack_work(struct work_struct *work)
{
struct pdr_handle *pdr = container_of(work, struct pdr_handle,
indack_work);
struct pdr_list_node *ind, *tmp;
struct pdr_service *pds;
list_for_each_entry_safe(ind, tmp, &pdr->indack_list, node) {
pds = ind->pds;
pdr_send_indack_msg(pdr, pds, ind->transaction_id);
mutex_lock(&pdr->status_lock);
pds->state = ind->curr_state;
pdr->status(pds->state, pds->service_path, pdr->priv);
mutex_unlock(&pdr->status_lock);
mutex_lock(&pdr->list_lock);
list_del(&ind->node);
mutex_unlock(&pdr->list_lock);
kfree(ind);
}
}
static void pdr_indication_cb(struct qmi_handle *qmi,
struct sockaddr_qrtr *sq,
struct qmi_txn *txn, const void *data)
{
struct pdr_handle *pdr = container_of(qmi, struct pdr_handle,
notifier_hdl);
const struct servreg_state_updated_ind *ind_msg = data;
struct pdr_list_node *ind;
struct pdr_service *pds;
bool found;
if (!ind_msg || !ind_msg->service_path[0] ||
strlen(ind_msg->service_path) > SERVREG_NAME_LENGTH)
return;
mutex_lock(&pdr->list_lock);
list_for_each_entry(pds, &pdr->lookups, node) {
if (strcmp(pds->service_path, ind_msg->service_path))
continue;
found = true;
break;
}
mutex_unlock(&pdr->list_lock);
if (!found)
return;
pr_info("PDR: Indication received from %s, state: 0x%x, trans-id: %d\n",
ind_msg->service_path, ind_msg->curr_state,
ind_msg->transaction_id);
ind = kzalloc(sizeof(*ind), GFP_KERNEL);
if (!ind)
return;
ind->transaction_id = ind_msg->transaction_id;
ind->curr_state = ind_msg->curr_state;
ind->pds = pds;
mutex_lock(&pdr->list_lock);
list_add_tail(&ind->node, &pdr->indack_list);
mutex_unlock(&pdr->list_lock);
queue_work(pdr->indack_wq, &pdr->indack_work);
}
static struct qmi_msg_handler qmi_indication_handler[] = {
{
.type = QMI_INDICATION,
.msg_id = SERVREG_STATE_UPDATED_IND_ID,
.ei = servreg_state_updated_ind_ei,
.decoded_size = sizeof(struct servreg_state_updated_ind),
.fn = pdr_indication_cb,
},
{}
};
static int pdr_get_domain_list(struct servreg_get_domain_list_req *req,
struct servreg_get_domain_list_resp *resp,
struct pdr_handle *pdr)
{
struct qmi_txn txn;
int ret;
ret = qmi_txn_init(&pdr->locator_hdl, &txn,
servreg_get_domain_list_resp_ei, resp);
if (ret < 0)
return ret;
ret = qmi_send_request(&pdr->locator_hdl,
&pdr->locator_addr,
&txn, SERVREG_GET_DOMAIN_LIST_REQ,
SERVREG_GET_DOMAIN_LIST_REQ_MAX_LEN,
servreg_get_domain_list_req_ei,
req);
if (ret < 0) {
qmi_txn_cancel(&txn);
return ret;
}
ret = qmi_txn_wait(&txn, 5 * HZ);
if (ret < 0) {
pr_err("PDR: %s get domain list txn wait failed: %d\n",
req->service_name, ret);
return ret;
}
if (resp->resp.result != QMI_RESULT_SUCCESS_V01) {
pr_err("PDR: %s get domain list failed: 0x%x\n",
req->service_name, resp->resp.error);
return -EREMOTEIO;
}
return 0;
}
static int pdr_locate_service(struct pdr_handle *pdr, struct pdr_service *pds)
{
struct servreg_get_domain_list_resp *resp;
struct servreg_get_domain_list_req req;
struct servreg_location_entry *entry;
int domains_read = 0;
int ret, i;
resp = kzalloc(sizeof(*resp), GFP_KERNEL);
if (!resp)
return -ENOMEM;
/* Prepare req message */
strcpy(req.service_name, pds->service_name);
req.domain_offset_valid = true;
req.domain_offset = 0;
do {
req.domain_offset = domains_read;
ret = pdr_get_domain_list(&req, resp, pdr);
if (ret < 0)
goto out;
for (i = domains_read; i < resp->domain_list_len; i++) {
entry = &resp->domain_list[i];
if (strnlen(entry->name, sizeof(entry->name)) == sizeof(entry->name))
continue;
if (!strcmp(entry->name, pds->service_path)) {
pds->service_data_valid = entry->service_data_valid;
pds->service_data = entry->service_data;
pds->instance = entry->instance;
goto out;
}
}
/* Update ret to indicate that the service is not yet found */
ret = -ENXIO;
/* Always read total_domains from the response msg */
if (resp->domain_list_len > resp->total_domains)
resp->domain_list_len = resp->total_domains;
domains_read += resp->domain_list_len;
} while (domains_read < resp->total_domains);
out:
kfree(resp);
return ret;
}
static void pdr_notify_lookup_failure(struct pdr_handle *pdr,
struct pdr_service *pds,
int err)
{
pr_err("PDR: service lookup for %s failed: %d\n",
pds->service_name, err);
if (err == -ENXIO)
return;
list_del(&pds->node);
pds->state = SERVREG_LOCATOR_ERR;
mutex_lock(&pdr->status_lock);
pdr->status(pds->state, pds->service_path, pdr->priv);
mutex_unlock(&pdr->status_lock);
kfree(pds);
}
static void pdr_locator_work(struct work_struct *work)
{
struct pdr_handle *pdr = container_of(work, struct pdr_handle,
locator_work);
struct pdr_service *pds, *tmp;
int ret = 0;
/* Bail out early if the SERVREG LOCATOR QMI service is not up */
mutex_lock(&pdr->lock);
if (!pdr->locator_init_complete) {
mutex_unlock(&pdr->lock);
pr_debug("PDR: SERVICE LOCATOR service not available\n");
return;
}
mutex_unlock(&pdr->lock);
mutex_lock(&pdr->list_lock);
list_for_each_entry_safe(pds, tmp, &pdr->lookups, node) {
if (!pds->need_locator_lookup)
continue;
ret = pdr_locate_service(pdr, pds);
if (ret < 0) {
pdr_notify_lookup_failure(pdr, pds, ret);
continue;
}
ret = qmi_add_lookup(&pdr->notifier_hdl, pds->service, 1,
pds->instance);
if (ret < 0) {
pdr_notify_lookup_failure(pdr, pds, ret);
continue;
}
pds->need_locator_lookup = false;
}
mutex_unlock(&pdr->list_lock);
}
/**
* pdr_add_lookup() - register a tracking request for a PD
* @pdr: PDR client handle
* @service_name: service name of the tracking request
* @service_path: service path of the tracking request
*
* Registering a pdr lookup allows for tracking the life cycle of the PD.
*
* Return: pdr_service object on success, ERR_PTR on failure. -EALREADY is
* returned if a lookup is already in progress for the given service path.
*/
struct pdr_service *pdr_add_lookup(struct pdr_handle *pdr,
const char *service_name,
const char *service_path)
{
struct pdr_service *pds, *tmp;
int ret;
if (IS_ERR_OR_NULL(pdr))
return ERR_PTR(-EINVAL);
if (!service_name || strlen(service_name) > SERVREG_NAME_LENGTH ||
!service_path || strlen(service_path) > SERVREG_NAME_LENGTH)
return ERR_PTR(-EINVAL);
pds = kzalloc(sizeof(*pds), GFP_KERNEL);
if (!pds)
return ERR_PTR(-ENOMEM);
pds->service = SERVREG_NOTIFIER_SERVICE;
strcpy(pds->service_name, service_name);
strcpy(pds->service_path, service_path);
pds->need_locator_lookup = true;
mutex_lock(&pdr->list_lock);
list_for_each_entry(tmp, &pdr->lookups, node) {
if (strcmp(tmp->service_path, service_path))
continue;
mutex_unlock(&pdr->list_lock);
ret = -EALREADY;
goto err;
}
list_add(&pds->node, &pdr->lookups);
mutex_unlock(&pdr->list_lock);
schedule_work(&pdr->locator_work);
return pds;
err:
kfree(pds);
return ERR_PTR(ret);
}
EXPORT_SYMBOL(pdr_add_lookup);
/**
* pdr_restart_pd() - restart PD
* @pdr: PDR client handle
* @pds: PD service handle
*
* Restarts the PD tracked by the PDR client handle for a given service path.
*
* Return: 0 on success, negative errno on failure.
*/
int pdr_restart_pd(struct pdr_handle *pdr, struct pdr_service *pds)
{
struct servreg_restart_pd_resp resp;
struct servreg_restart_pd_req req;
struct sockaddr_qrtr addr;
struct pdr_service *tmp;
struct qmi_txn txn;
int ret;
if (IS_ERR_OR_NULL(pdr) || IS_ERR_OR_NULL(pds))
return -EINVAL;
mutex_lock(&pdr->list_lock);
list_for_each_entry(tmp, &pdr->lookups, node) {
if (tmp != pds)
continue;
if (!pds->service_connected)
break;
/* Prepare req message */
strcpy(req.service_path, pds->service_path);
addr = pds->addr;
break;
}
mutex_unlock(&pdr->list_lock);
if (!req.service_path[0])
return -EINVAL;
ret = qmi_txn_init(&pdr->notifier_hdl, &txn,
servreg_restart_pd_resp_ei,
&resp);
if (ret < 0)
return ret;
ret = qmi_send_request(&pdr->notifier_hdl, &addr,
&txn, SERVREG_RESTART_PD_REQ,
SERVREG_RESTART_PD_REQ_MAX_LEN,
servreg_restart_pd_req_ei, &req);
if (ret < 0) {
qmi_txn_cancel(&txn);
return ret;
}
ret = qmi_txn_wait(&txn, 5 * HZ);
if (ret < 0) {
pr_err("PDR: %s PD restart txn wait failed: %d\n",
req.service_path, ret);
return ret;
}
/* Check response if PDR is disabled */
if (resp.resp.result == QMI_RESULT_FAILURE_V01 &&
resp.resp.error == QMI_ERR_DISABLED_V01) {
pr_err("PDR: %s PD restart is disabled: 0x%x\n",
req.service_path, resp.resp.error);
return -EOPNOTSUPP;
}
/* Check the response for other error case*/
if (resp.resp.result != QMI_RESULT_SUCCESS_V01) {
pr_err("PDR: %s request for PD restart failed: 0x%x\n",
req.service_path, resp.resp.error);
return -EREMOTEIO;
}
return 0;
}
EXPORT_SYMBOL(pdr_restart_pd);
/**
* pdr_handle_alloc() - initialize the PDR client handle
* @status: function to be called on PD state change
* @priv: handle for client's use
*
* Initializes the PDR client handle to allow for tracking/restart of PDs.
*
* Return: pdr_handle object on success, ERR_PTR on failure.
*/
struct pdr_handle *pdr_handle_alloc(void (*status)(int state,
char *service_path,
void *priv), void *priv)
{
struct pdr_handle *pdr;
int ret;
if (!status)
return ERR_PTR(-EINVAL);
pdr = kzalloc(sizeof(*pdr), GFP_KERNEL);
if (!pdr)
return ERR_PTR(-ENOMEM);
pdr->status = status;
pdr->priv = priv;
mutex_init(&pdr->status_lock);
mutex_init(&pdr->list_lock);
mutex_init(&pdr->lock);
INIT_LIST_HEAD(&pdr->lookups);
INIT_LIST_HEAD(&pdr->indack_list);
INIT_WORK(&pdr->locator_work, pdr_locator_work);
INIT_WORK(&pdr->notifier_work, pdr_notifier_work);
INIT_WORK(&pdr->indack_work, pdr_indack_work);
pdr->notifier_wq = create_singlethread_workqueue("pdr_notifier_wq");
if (!pdr->notifier_wq) {
ret = -ENOMEM;
goto free_pdr_handle;
}
pdr->indack_wq = alloc_ordered_workqueue("pdr_indack_wq", WQ_HIGHPRI);
if (!pdr->indack_wq) {
ret = -ENOMEM;
goto destroy_notifier;
}
ret = qmi_handle_init(&pdr->locator_hdl,
SERVREG_GET_DOMAIN_LIST_RESP_MAX_LEN,
&pdr_locator_ops, NULL);
if (ret < 0)
goto destroy_indack;
ret = qmi_add_lookup(&pdr->locator_hdl, SERVREG_LOCATOR_SERVICE, 1, 1);
if (ret < 0)
goto release_qmi_handle;
ret = qmi_handle_init(&pdr->notifier_hdl,
SERVREG_STATE_UPDATED_IND_MAX_LEN,
&pdr_notifier_ops,
qmi_indication_handler);
if (ret < 0)
goto release_qmi_handle;
return pdr;
release_qmi_handle:
qmi_handle_release(&pdr->locator_hdl);
destroy_indack:
destroy_workqueue(pdr->indack_wq);
destroy_notifier:
destroy_workqueue(pdr->notifier_wq);
free_pdr_handle:
kfree(pdr);
return ERR_PTR(ret);
}
EXPORT_SYMBOL(pdr_handle_alloc);
/**
* pdr_handle_release() - release the PDR client handle
* @pdr: PDR client handle
*
* Cleans up pending tracking requests and releases the underlying qmi handles.
*/
void pdr_handle_release(struct pdr_handle *pdr)
{
struct pdr_service *pds, *tmp;
if (IS_ERR_OR_NULL(pdr))
return;
mutex_lock(&pdr->list_lock);
list_for_each_entry_safe(pds, tmp, &pdr->lookups, node) {
list_del(&pds->node);
kfree(pds);
}
mutex_unlock(&pdr->list_lock);
cancel_work_sync(&pdr->locator_work);
cancel_work_sync(&pdr->notifier_work);
cancel_work_sync(&pdr->indack_work);
destroy_workqueue(pdr->notifier_wq);
destroy_workqueue(pdr->indack_wq);
qmi_handle_release(&pdr->locator_hdl);
qmi_handle_release(&pdr->notifier_hdl);
kfree(pdr);
}
EXPORT_SYMBOL(pdr_handle_release);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Qualcomm Protection Domain Restart helpers");

379
drivers/soc/qcom/pdr_internal.h Normal file
View File

@ -0,0 +1,379 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __QCOM_PDR_HELPER_INTERNAL__
#define __QCOM_PDR_HELPER_INTERNAL__
#include <linux/soc/qcom/pdr.h>
#define SERVREG_LOCATOR_SERVICE 0x40
#define SERVREG_NOTIFIER_SERVICE 0x42
#define SERVREG_REGISTER_LISTENER_REQ 0x20
#define SERVREG_GET_DOMAIN_LIST_REQ 0x21
#define SERVREG_STATE_UPDATED_IND_ID 0x22
#define SERVREG_SET_ACK_REQ 0x23
#define SERVREG_RESTART_PD_REQ 0x24
#define SERVREG_DOMAIN_LIST_LENGTH 32
#define SERVREG_RESTART_PD_REQ_MAX_LEN 67
#define SERVREG_REGISTER_LISTENER_REQ_LEN 71
#define SERVREG_SET_ACK_REQ_LEN 72
#define SERVREG_GET_DOMAIN_LIST_REQ_MAX_LEN 74
#define SERVREG_STATE_UPDATED_IND_MAX_LEN 79
#define SERVREG_GET_DOMAIN_LIST_RESP_MAX_LEN 2389
struct servreg_location_entry {
char name[SERVREG_NAME_LENGTH + 1];
u8 service_data_valid;
u32 service_data;
u32 instance;
};
struct qmi_elem_info servreg_location_entry_ei[] = {
{
.data_type = QMI_STRING,
.elem_len = SERVREG_NAME_LENGTH + 1,
.elem_size = sizeof(char),
.array_type = NO_ARRAY,
.tlv_type = 0,
.offset = offsetof(struct servreg_location_entry,
name),
},
{
.data_type = QMI_UNSIGNED_4_BYTE,
.elem_len = 1,
.elem_size = sizeof(u32),
.array_type = NO_ARRAY,
.tlv_type = 0,
.offset = offsetof(struct servreg_location_entry,
instance),
},
{
.data_type = QMI_UNSIGNED_1_BYTE,
.elem_len = 1,
.elem_size = sizeof(u8),
.array_type = NO_ARRAY,
.tlv_type = 0,
.offset = offsetof(struct servreg_location_entry,
service_data_valid),
},
{
.data_type = QMI_UNSIGNED_4_BYTE,
.elem_len = 1,
.elem_size = sizeof(u32),
.array_type = NO_ARRAY,
.tlv_type = 0,
.offset = offsetof(struct servreg_location_entry,
service_data),
},
{}
};
struct servreg_get_domain_list_req {
char service_name[SERVREG_NAME_LENGTH + 1];
u8 domain_offset_valid;
u32 domain_offset;
};
struct qmi_elem_info servreg_get_domain_list_req_ei[] = {
{
.data_type = QMI_STRING,
.elem_len = SERVREG_NAME_LENGTH + 1,
.elem_size = sizeof(char),
.array_type = NO_ARRAY,
.tlv_type = 0x01,
.offset = offsetof(struct servreg_get_domain_list_req,
service_name),
},
{
.data_type = QMI_OPT_FLAG,
.elem_len = 1,
.elem_size = sizeof(u8),
.array_type = NO_ARRAY,
.tlv_type = 0x10,
.offset = offsetof(struct servreg_get_domain_list_req,
domain_offset_valid),
},
{
.data_type = QMI_UNSIGNED_4_BYTE,
.elem_len = 1,
.elem_size = sizeof(u32),
.array_type = NO_ARRAY,
.tlv_type = 0x10,
.offset = offsetof(struct servreg_get_domain_list_req,
domain_offset),
},
{}
};
struct servreg_get_domain_list_resp {
struct qmi_response_type_v01 resp;
u8 total_domains_valid;
u16 total_domains;
u8 db_rev_count_valid;
u16 db_rev_count;
u8 domain_list_valid;
u32 domain_list_len;
struct servreg_location_entry domain_list[SERVREG_DOMAIN_LIST_LENGTH];
};
struct qmi_elem_info servreg_get_domain_list_resp_ei[] = {
{
.data_type = QMI_STRUCT,
.elem_len = 1,
.elem_size = sizeof(struct qmi_response_type_v01),
.array_type = NO_ARRAY,
.tlv_type = 0x02,
.offset = offsetof(struct servreg_get_domain_list_resp,
resp),
.ei_array = qmi_response_type_v01_ei,
},
{
.data_type = QMI_OPT_FLAG,
.elem_len = 1,
.elem_size = sizeof(u8),
.array_type = NO_ARRAY,
.tlv_type = 0x10,
.offset = offsetof(struct servreg_get_domain_list_resp,
total_domains_valid),
},
{
.data_type = QMI_UNSIGNED_2_BYTE,
.elem_len = 1,
.elem_size = sizeof(u16),
.array_type = NO_ARRAY,
.tlv_type = 0x10,
.offset = offsetof(struct servreg_get_domain_list_resp,
total_domains),
},
{
.data_type = QMI_OPT_FLAG,
.elem_len = 1,
.elem_size = sizeof(u8),
.array_type = NO_ARRAY,
.tlv_type = 0x11,
.offset = offsetof(struct servreg_get_domain_list_resp,
db_rev_count_valid),
},
{
.data_type = QMI_UNSIGNED_2_BYTE,
.elem_len = 1,
.elem_size = sizeof(u16),
.array_type = NO_ARRAY,
.tlv_type = 0x11,
.offset = offsetof(struct servreg_get_domain_list_resp,
db_rev_count),
},
{
.data_type = QMI_OPT_FLAG,
.elem_len = 1,
.elem_size = sizeof(u8),
.array_type = NO_ARRAY,
.tlv_type = 0x12,
.offset = offsetof(struct servreg_get_domain_list_resp,
domain_list_valid),
},
{
.data_type = QMI_DATA_LEN,
.elem_len = 1,
.elem_size = sizeof(u8),
.array_type = NO_ARRAY,
.tlv_type = 0x12,
.offset = offsetof(struct servreg_get_domain_list_resp,
domain_list_len),
},
{
.data_type = QMI_STRUCT,
.elem_len = SERVREG_DOMAIN_LIST_LENGTH,
.elem_size = sizeof(struct servreg_location_entry),
.array_type = NO_ARRAY,
.tlv_type = 0x12,
.offset = offsetof(struct servreg_get_domain_list_resp,
domain_list),
.ei_array = servreg_location_entry_ei,
},
{}
};
struct servreg_register_listener_req {
u8 enable;
char service_path[SERVREG_NAME_LENGTH + 1];
};
struct qmi_elem_info servreg_register_listener_req_ei[] = {
{
.data_type = QMI_UNSIGNED_1_BYTE,
.elem_len = 1,
.elem_size = sizeof(u8),
.array_type = NO_ARRAY,
.tlv_type = 0x01,
.offset = offsetof(struct servreg_register_listener_req,
enable),
},
{
.data_type = QMI_STRING,
.elem_len = SERVREG_NAME_LENGTH + 1,
.elem_size = sizeof(char),
.array_type = NO_ARRAY,
.tlv_type = 0x02,
.offset = offsetof(struct servreg_register_listener_req,
service_path),
},
{}
};
struct servreg_register_listener_resp {
struct qmi_response_type_v01 resp;
u8 curr_state_valid;
enum servreg_service_state curr_state;
};
struct qmi_elem_info servreg_register_listener_resp_ei[] = {
{
.data_type = QMI_STRUCT,
.elem_len = 1,
.elem_size = sizeof(struct qmi_response_type_v01),
.array_type = NO_ARRAY,
.tlv_type = 0x02,
.offset = offsetof(struct servreg_register_listener_resp,
resp),
.ei_array = qmi_response_type_v01_ei,
},
{
.data_type = QMI_OPT_FLAG,
.elem_len = 1,
.elem_size = sizeof(u8),
.array_type = NO_ARRAY,
.tlv_type = 0x10,
.offset = offsetof(struct servreg_register_listener_resp,
curr_state_valid),
},
{
.data_type = QMI_SIGNED_4_BYTE_ENUM,
.elem_len = 1,
.elem_size = sizeof(enum servreg_service_state),
.array_type = NO_ARRAY,
.tlv_type = 0x10,
.offset = offsetof(struct servreg_register_listener_resp,
curr_state),
},
{}
};
struct servreg_restart_pd_req {
char service_path[SERVREG_NAME_LENGTH + 1];
};
struct qmi_elem_info servreg_restart_pd_req_ei[] = {
{
.data_type = QMI_STRING,
.elem_len = SERVREG_NAME_LENGTH + 1,
.elem_size = sizeof(char),
.array_type = NO_ARRAY,
.tlv_type = 0x01,
.offset = offsetof(struct servreg_restart_pd_req,
service_path),
},
{}
};
struct servreg_restart_pd_resp {
struct qmi_response_type_v01 resp;
};
struct qmi_elem_info servreg_restart_pd_resp_ei[] = {
{
.data_type = QMI_STRUCT,
.elem_len = 1,
.elem_size = sizeof(struct qmi_response_type_v01),
.array_type = NO_ARRAY,
.tlv_type = 0x02,
.offset = offsetof(struct servreg_restart_pd_resp,
resp),
.ei_array = qmi_response_type_v01_ei,
},
{}
};
struct servreg_state_updated_ind {
enum servreg_service_state curr_state;
char service_path[SERVREG_NAME_LENGTH + 1];
u16 transaction_id;
};
struct qmi_elem_info servreg_state_updated_ind_ei[] = {
{
.data_type = QMI_SIGNED_4_BYTE_ENUM,
.elem_len = 1,
.elem_size = sizeof(u32),
.array_type = NO_ARRAY,
.tlv_type = 0x01,
.offset = offsetof(struct servreg_state_updated_ind,
curr_state),
},
{
.data_type = QMI_STRING,
.elem_len = SERVREG_NAME_LENGTH + 1,
.elem_size = sizeof(char),
.array_type = NO_ARRAY,
.tlv_type = 0x02,
.offset = offsetof(struct servreg_state_updated_ind,
service_path),
},
{
.data_type = QMI_UNSIGNED_2_BYTE,
.elem_len = 1,
.elem_size = sizeof(u16),
.array_type = NO_ARRAY,
.tlv_type = 0x03,
.offset = offsetof(struct servreg_state_updated_ind,
transaction_id),
},
{}
};
struct servreg_set_ack_req {
char service_path[SERVREG_NAME_LENGTH + 1];
u16 transaction_id;
};
struct qmi_elem_info servreg_set_ack_req_ei[] = {
{
.data_type = QMI_STRING,
.elem_len = SERVREG_NAME_LENGTH + 1,
.elem_size = sizeof(char),
.array_type = NO_ARRAY,
.tlv_type = 0x01,
.offset = offsetof(struct servreg_set_ack_req,
service_path),
},
{
.data_type = QMI_UNSIGNED_2_BYTE,
.elem_len = 1,
.elem_size = sizeof(u16),
.array_type = NO_ARRAY,
.tlv_type = 0x02,
.offset = offsetof(struct servreg_set_ack_req,
transaction_id),
},
{}
};
struct servreg_set_ack_resp {
struct qmi_response_type_v01 resp;
};
struct qmi_elem_info servreg_set_ack_resp_ei[] = {
{
.data_type = QMI_STRUCT,
.elem_len = 1,
.elem_size = sizeof(struct qmi_response_type_v01),
.array_type = NO_ARRAY,
.tlv_type = 0x02,
.offset = offsetof(struct servreg_set_ack_resp,
resp),
.ei_array = qmi_response_type_v01_ei,
},
{}
};
#endif

29
include/linux/soc/qcom/pdr.h Normal file
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@ -0,0 +1,29 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __QCOM_PDR_HELPER__
#define __QCOM_PDR_HELPER__
#include <linux/soc/qcom/qmi.h>
#define SERVREG_NAME_LENGTH 64
struct pdr_service;
struct pdr_handle;
enum servreg_service_state {
SERVREG_LOCATOR_ERR = 0x1,
SERVREG_SERVICE_STATE_DOWN = 0x0FFFFFFF,
SERVREG_SERVICE_STATE_UP = 0x1FFFFFFF,
SERVREG_SERVICE_STATE_EARLY_DOWN = 0x2FFFFFFF,
SERVREG_SERVICE_STATE_UNINIT = 0x7FFFFFFF,
};
struct pdr_handle *pdr_handle_alloc(void (*status)(int state,
char *service_path,
void *priv), void *priv);
struct pdr_service *pdr_add_lookup(struct pdr_handle *pdr,
const char *service_name,
const char *service_path);
int pdr_restart_pd(struct pdr_handle *pdr, struct pdr_service *pds);
void pdr_handle_release(struct pdr_handle *pdr);
#endif

1
include/linux/soc/qcom/qmi.h
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@ -88,6 +88,7 @@ struct qmi_elem_info {
#define QMI_ERR_CLIENT_IDS_EXHAUSTED_V01 5
#define QMI_ERR_INVALID_ID_V01 41
#define QMI_ERR_ENCODING_V01 58
#define QMI_ERR_DISABLED_V01 69
#define QMI_ERR_INCOMPATIBLE_STATE_V01 90
#define QMI_ERR_NOT_SUPPORTED_V01 94