NFC: Add NCI multiple targets support
Add the ability to select between multiple targets in NCI.
If only one target is found, it will be auto-activated.
If more than one target is found, then DISCOVER_NTF will be
generated for each target, and the host should select one by
calling DISCOVER_SELECT_CMD. Then, the target will be activated.
If the activation fails, GENERIC_ERROR_NTF is generated.
Signed-off-by: Ilan Elias <ilane@ti.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/net/nfc/nci.h b/include/net/nfc/nci.h
index 34f5ed2..276094b 100644
--- a/include/net/nfc/nci.h
+++ b/include/net/nfc/nci.h
@@ -116,6 +116,11 @@
#define NCI_DISC_MAP_MODE_POLL 0x01
#define NCI_DISC_MAP_MODE_LISTEN 0x02
+/* NCI Discover Notification Type */
+#define NCI_DISCOVER_NTF_TYPE_LAST 0x00
+#define NCI_DISCOVER_NTF_TYPE_LAST_NFCC 0x01
+#define NCI_DISCOVER_NTF_TYPE_MORE 0x02
+
/* NCI Deactivation Type */
#define NCI_DEACTIVATE_TYPE_IDLE_MODE 0x00
#define NCI_DEACTIVATE_TYPE_SLEEP_MODE 0x01
@@ -207,6 +212,13 @@
struct disc_config disc_configs[NCI_MAX_NUM_RF_CONFIGS];
} __packed;
+#define NCI_OP_RF_DISCOVER_SELECT_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
+struct nci_rf_discover_select_cmd {
+ __u8 rf_discovery_id;
+ __u8 rf_protocol;
+ __u8 rf_interface;
+} __packed;
+
#define NCI_OP_RF_DEACTIVATE_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
struct nci_rf_deactivate_cmd {
__u8 type;
@@ -244,6 +256,8 @@
#define NCI_OP_RF_DISCOVER_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
+#define NCI_OP_RF_DISCOVER_SELECT_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
+
#define NCI_OP_RF_DEACTIVATE_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
/* --------------------------- */
@@ -260,13 +274,15 @@
struct conn_credit_entry conn_entries[NCI_MAX_NUM_CONN];
} __packed;
+#define NCI_OP_CORE_GENERIC_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x07)
+
#define NCI_OP_CORE_INTF_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x08)
struct nci_core_intf_error_ntf {
__u8 status;
__u8 conn_id;
} __packed;
-#define NCI_OP_RF_INTF_ACTIVATED_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
+#define NCI_OP_RF_DISCOVER_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
struct rf_tech_specific_params_nfca_poll {
__u16 sens_res;
__u8 nfcid1_len; /* 0, 4, 7, or 10 Bytes */
@@ -286,6 +302,22 @@
__u8 sensf_res[18]; /* 16 or 18 Bytes */
} __packed;
+struct nci_rf_discover_ntf {
+ __u8 rf_discovery_id;
+ __u8 rf_protocol;
+ __u8 rf_tech_and_mode;
+ __u8 rf_tech_specific_params_len;
+
+ union {
+ struct rf_tech_specific_params_nfca_poll nfca_poll;
+ struct rf_tech_specific_params_nfcb_poll nfcb_poll;
+ struct rf_tech_specific_params_nfcf_poll nfcf_poll;
+ } rf_tech_specific_params;
+
+ __u8 ntf_type;
+} __packed;
+
+#define NCI_OP_RF_INTF_ACTIVATED_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
struct activation_params_nfca_poll_iso_dep {
__u8 rats_res_len;
__u8 rats_res[20];
diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
index b9c3f8d..86fee8b 100644
--- a/include/net/nfc/nci_core.h
+++ b/include/net/nfc/nci_core.h
@@ -46,6 +46,8 @@
enum nci_state {
NCI_IDLE,
NCI_DISCOVERY,
+ NCI_W4_ALL_DISCOVERIES,
+ NCI_W4_HOST_SELECT,
NCI_POLL_ACTIVE,
};
@@ -53,6 +55,7 @@
#define NCI_RESET_TIMEOUT 5000
#define NCI_INIT_TIMEOUT 5000
#define NCI_RF_DISC_TIMEOUT 5000
+#define NCI_RF_DISC_SELECT_TIMEOUT 5000
#define NCI_RF_DEACTIVATE_TIMEOUT 30000
#define NCI_CMD_TIMEOUT 5000
#define NCI_DATA_TIMEOUT 700
@@ -66,6 +69,7 @@
};
#define NCI_MAX_SUPPORTED_RF_INTERFACES 4
+#define NCI_MAX_DISCOVERED_TARGETS 10
/* NCI Core structures */
struct nci_dev {
@@ -105,9 +109,11 @@
void *driver_data;
__u32 poll_prots;
- __u32 target_available_prots;
__u32 target_active_prot;
+ struct nfc_target targets[NCI_MAX_DISCOVERED_TARGETS];
+ int n_targets;
+
/* received during NCI_OP_CORE_RESET_RSP */
__u8 nci_ver;
@@ -178,6 +184,7 @@
int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb);
void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb,
int err);
+void nci_clear_target_list(struct nci_dev *ndev);
/* ----- NCI requests ----- */
#define NCI_REQ_DONE 0