diff --git a/drivers/soc/qcom/apr.c b/drivers/soc/qcom/apr.c index 2e455d9e3d94..5687653fabd5 100644 --- a/drivers/soc/qcom/apr.c +++ b/drivers/soc/qcom/apr.c @@ -15,13 +15,18 @@ #include #include -struct apr { +enum { + PR_TYPE_APR = 0, +}; + +struct packet_router { struct rpmsg_endpoint *ch; struct device *dev; spinlock_t svcs_lock; spinlock_t rx_lock; struct idr svcs_idr; int dest_domain_id; + int type; struct pdr_handle *pdr; struct workqueue_struct *rxwq; struct work_struct rx_work; @@ -44,21 +49,21 @@ struct apr_rx_buf { */ int apr_send_pkt(struct apr_device *adev, struct apr_pkt *pkt) { - struct apr *apr = dev_get_drvdata(adev->dev.parent); + struct packet_router *apr = dev_get_drvdata(adev->dev.parent); struct apr_hdr *hdr; unsigned long flags; int ret; - spin_lock_irqsave(&adev->lock, flags); + spin_lock_irqsave(&adev->svc.lock, flags); hdr = &pkt->hdr; hdr->src_domain = APR_DOMAIN_APPS; - hdr->src_svc = adev->svc_id; + hdr->src_svc = adev->svc.id; hdr->dest_domain = adev->domain_id; - hdr->dest_svc = adev->svc_id; + hdr->dest_svc = adev->svc.id; ret = rpmsg_trysend(apr->ch, pkt, hdr->pkt_size); - spin_unlock_irqrestore(&adev->lock, flags); + spin_unlock_irqrestore(&adev->svc.lock, flags); return ret ? ret : hdr->pkt_size; } @@ -74,7 +79,7 @@ static void apr_dev_release(struct device *dev) static int apr_callback(struct rpmsg_device *rpdev, void *buf, int len, void *priv, u32 addr) { - struct apr *apr = dev_get_drvdata(&rpdev->dev); + struct packet_router *apr = dev_get_drvdata(&rpdev->dev); struct apr_rx_buf *abuf; unsigned long flags; @@ -100,11 +105,11 @@ static int apr_callback(struct rpmsg_device *rpdev, void *buf, return 0; } - -static int apr_do_rx_callback(struct apr *apr, struct apr_rx_buf *abuf) +static int apr_do_rx_callback(struct packet_router *apr, struct apr_rx_buf *abuf) { uint16_t hdr_size, msg_type, ver, svc_id; - struct apr_device *svc = NULL; + struct pkt_router_svc *svc; + struct apr_device *adev; struct apr_driver *adrv = NULL; struct apr_resp_pkt resp; struct apr_hdr *hdr; @@ -145,12 +150,15 @@ static int apr_do_rx_callback(struct apr *apr, struct apr_rx_buf *abuf) svc_id = hdr->dest_svc; spin_lock_irqsave(&apr->svcs_lock, flags); svc = idr_find(&apr->svcs_idr, svc_id); - if (svc && svc->dev.driver) - adrv = to_apr_driver(svc->dev.driver); + if (svc && svc->dev->driver) { + adev = svc_to_apr_device(svc); + adrv = to_apr_driver(adev->dev.driver); + } spin_unlock_irqrestore(&apr->svcs_lock, flags); - if (!adrv) { - dev_err(apr->dev, "APR: service is not registered\n"); + if (!adrv || !adev) { + dev_err(apr->dev, "APR: service is not registered (%d)\n", + svc_id); return -EINVAL; } @@ -164,20 +172,26 @@ static int apr_do_rx_callback(struct apr *apr, struct apr_rx_buf *abuf) if (resp.payload_size > 0) resp.payload = buf + hdr_size; - adrv->callback(svc, &resp); + adrv->callback(adev, &resp); return 0; } static void apr_rxwq(struct work_struct *work) { - struct apr *apr = container_of(work, struct apr, rx_work); + struct packet_router *apr = container_of(work, struct packet_router, rx_work); struct apr_rx_buf *abuf, *b; unsigned long flags; if (!list_empty(&apr->rx_list)) { list_for_each_entry_safe(abuf, b, &apr->rx_list, node) { - apr_do_rx_callback(apr, abuf); + switch (apr->type) { + case PR_TYPE_APR: + apr_do_rx_callback(apr, abuf); + break; + default: + break; + } spin_lock_irqsave(&apr->rx_lock, flags); list_del(&abuf->node); spin_unlock_irqrestore(&apr->rx_lock, flags); @@ -201,7 +215,7 @@ static int apr_device_match(struct device *dev, struct device_driver *drv) while (id->domain_id != 0 || id->svc_id != 0) { if (id->domain_id == adev->domain_id && - id->svc_id == adev->svc_id) + id->svc_id == adev->svc.id) return 1; id++; } @@ -221,14 +235,14 @@ static void apr_device_remove(struct device *dev) { struct apr_device *adev = to_apr_device(dev); struct apr_driver *adrv; - struct apr *apr = dev_get_drvdata(adev->dev.parent); + struct packet_router *apr = dev_get_drvdata(adev->dev.parent); if (dev->driver) { adrv = to_apr_driver(dev->driver); if (adrv->remove) adrv->remove(adev); spin_lock(&apr->svcs_lock); - idr_remove(&apr->svcs_idr, adev->svc_id); + idr_remove(&apr->svcs_idr, adev->svc.id); spin_unlock(&apr->svcs_lock); } } @@ -255,28 +269,39 @@ struct bus_type aprbus = { EXPORT_SYMBOL_GPL(aprbus); static int apr_add_device(struct device *dev, struct device_node *np, - const struct apr_device_id *id) + u32 svc_id, u32 domain_id) { - struct apr *apr = dev_get_drvdata(dev); + struct packet_router *apr = dev_get_drvdata(dev); struct apr_device *adev = NULL; + struct pkt_router_svc *svc; int ret; adev = kzalloc(sizeof(*adev), GFP_KERNEL); if (!adev) return -ENOMEM; - spin_lock_init(&adev->lock); + adev->svc_id = svc_id; + svc = &adev->svc; + + svc->id = svc_id; + svc->pr = apr; + svc->priv = adev; + svc->dev = dev; + spin_lock_init(&svc->lock); + + adev->domain_id = domain_id; - adev->svc_id = id->svc_id; - adev->domain_id = id->domain_id; - adev->version = id->svc_version; if (np) snprintf(adev->name, APR_NAME_SIZE, "%pOFn", np); - else - strscpy(adev->name, id->name, APR_NAME_SIZE); - dev_set_name(&adev->dev, "aprsvc:%s:%x:%x", adev->name, - id->domain_id, id->svc_id); + switch (apr->type) { + case PR_TYPE_APR: + dev_set_name(&adev->dev, "aprsvc:%s:%x:%x", adev->name, + domain_id, svc_id); + break; + default: + break; + } adev->dev.bus = &aprbus; adev->dev.parent = dev; @@ -285,8 +310,7 @@ static int apr_add_device(struct device *dev, struct device_node *np, adev->dev.driver = NULL; spin_lock(&apr->svcs_lock); - idr_alloc(&apr->svcs_idr, adev, id->svc_id, - id->svc_id + 1, GFP_ATOMIC); + idr_alloc(&apr->svcs_idr, svc, svc_id, svc_id + 1, GFP_ATOMIC); spin_unlock(&apr->svcs_lock); of_property_read_string_index(np, "qcom,protection-domain", @@ -306,7 +330,7 @@ static int apr_add_device(struct device *dev, struct device_node *np, static int of_apr_add_pd_lookups(struct device *dev) { const char *service_name, *service_path; - struct apr *apr = dev_get_drvdata(dev); + struct packet_router *apr = dev_get_drvdata(dev); struct device_node *node; struct pdr_service *pds; int ret; @@ -338,13 +362,14 @@ static int of_apr_add_pd_lookups(struct device *dev) static void of_register_apr_devices(struct device *dev, const char *svc_path) { - struct apr *apr = dev_get_drvdata(dev); + struct packet_router *apr = dev_get_drvdata(dev); struct device_node *node; const char *service_path; int ret; for_each_child_of_node(dev->of_node, node) { - struct apr_device_id id = { {0} }; + u32 svc_id; + u32 domain_id; /* * This function is called with svc_path NULL during @@ -374,13 +399,13 @@ static void of_register_apr_devices(struct device *dev, const char *svc_path) continue; } - if (of_property_read_u32(node, "reg", &id.svc_id)) + if (of_property_read_u32(node, "reg", &svc_id)) continue; - id.domain_id = apr->dest_domain_id; + domain_id = apr->dest_domain_id; - if (apr_add_device(dev, node, &id)) - dev_err(dev, "Failed to add apr %d svc\n", id.svc_id); + if (apr_add_device(dev, node, svc_id, domain_id)) + dev_err(dev, "Failed to add apr %d svc\n", svc_id); } } @@ -400,7 +425,7 @@ static int apr_remove_device(struct device *dev, void *svc_path) static void apr_pd_status(int state, char *svc_path, void *priv) { - struct apr *apr = (struct apr *)priv; + struct packet_router *apr = (struct packet_router *)priv; switch (state) { case SERVREG_SERVICE_STATE_UP: @@ -415,16 +440,20 @@ static void apr_pd_status(int state, char *svc_path, void *priv) static int apr_probe(struct rpmsg_device *rpdev) { struct device *dev = &rpdev->dev; - struct apr *apr; + struct packet_router *apr; int ret; apr = devm_kzalloc(dev, sizeof(*apr), GFP_KERNEL); if (!apr) return -ENOMEM; - ret = of_property_read_u32(dev->of_node, "qcom,apr-domain", &apr->dest_domain_id); + ret = of_property_read_u32(dev->of_node, "qcom,domain", &apr->dest_domain_id); + if (ret) /* try deprecated apr-domain property */ + ret = of_property_read_u32(dev->of_node, "qcom,apr-domain", + &apr->dest_domain_id); + apr->type = PR_TYPE_APR; if (ret) { - dev_err(dev, "APR Domain ID not specified in DT\n"); + dev_err(dev, "Domain ID not specified in DT\n"); return ret; } @@ -467,7 +496,7 @@ destroy_wq: static void apr_remove(struct rpmsg_device *rpdev) { - struct apr *apr = dev_get_drvdata(&rpdev->dev); + struct packet_router *apr = dev_get_drvdata(&rpdev->dev); pdr_handle_release(apr->pdr); device_for_each_child(&rpdev->dev, NULL, apr_remove_device); @@ -504,20 +533,20 @@ void apr_driver_unregister(struct apr_driver *drv) } EXPORT_SYMBOL_GPL(apr_driver_unregister); -static const struct of_device_id apr_of_match[] = { +static const struct of_device_id pkt_router_of_match[] = { { .compatible = "qcom,apr"}, { .compatible = "qcom,apr-v2"}, {} }; -MODULE_DEVICE_TABLE(of, apr_of_match); +MODULE_DEVICE_TABLE(of, pkt_router_of_match); -static struct rpmsg_driver apr_driver = { +static struct rpmsg_driver packet_router_driver = { .probe = apr_probe, .remove = apr_remove, .callback = apr_callback, .drv = { .name = "qcom,apr", - .of_match_table = apr_of_match, + .of_match_table = pkt_router_of_match, }, }; @@ -527,7 +556,7 @@ static int __init apr_init(void) ret = bus_register(&aprbus); if (!ret) - ret = register_rpmsg_driver(&apr_driver); + ret = register_rpmsg_driver(&packet_router_driver); else bus_unregister(&aprbus); @@ -537,7 +566,7 @@ static int __init apr_init(void) static void __exit apr_exit(void) { bus_unregister(&aprbus); - unregister_rpmsg_driver(&apr_driver); + unregister_rpmsg_driver(&packet_router_driver); } subsys_initcall(apr_init); diff --git a/include/linux/soc/qcom/apr.h b/include/linux/soc/qcom/apr.h index 137f9f2ac4c3..7bca213a3f83 100644 --- a/include/linux/soc/qcom/apr.h +++ b/include/linux/soc/qcom/apr.h @@ -79,6 +79,15 @@ struct apr_resp_pkt { #define APR_SVC_MAJOR_VERSION(v) ((v >> 16) & 0xFF) #define APR_SVC_MINOR_VERSION(v) (v & 0xFF) +struct packet_router; +struct pkt_router_svc { + struct device *dev; + struct packet_router *pr; + spinlock_t lock; + int id; + void *priv; +}; + struct apr_device { struct device dev; uint16_t svc_id; @@ -86,11 +95,12 @@ struct apr_device { uint32_t version; char name[APR_NAME_SIZE]; const char *service_path; - spinlock_t lock; + struct pkt_router_svc svc; struct list_head node; }; #define to_apr_device(d) container_of(d, struct apr_device, dev) +#define svc_to_apr_device(d) container_of(d, struct apr_device, svc) struct apr_driver { int (*probe)(struct apr_device *sl);