NFC: Set local general bytes in nci_start_poll
If initiator protocol is NFC-DEP, set the local general bytes
in nci_start_poll.
Signed-off-by: Ilan Elias <ilane@ti.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/include/net/nfc/nci.h b/include/net/nfc/nci.h
index 276094b..d260ef3 100644
--- a/include/net/nfc/nci.h
+++ b/include/net/nfc/nci.h
@@ -32,6 +32,7 @@
#define NCI_MAX_NUM_MAPPING_CONFIGS 10
#define NCI_MAX_NUM_RF_CONFIGS 10
#define NCI_MAX_NUM_CONN 10
+#define NCI_MAX_PARAM_LEN 251
/* NCI Status Codes */
#define NCI_STATUS_OK 0x00
@@ -102,6 +103,9 @@
#define NCI_RF_INTERFACE_ISO_DEP 0x02
#define NCI_RF_INTERFACE_NFC_DEP 0x03
+/* NCI Configuration Parameter Tags */
+#define NCI_PN_ATR_REQ_GEN_BYTES 0x29
+
/* NCI Reset types */
#define NCI_RESET_TYPE_KEEP_CONFIG 0x00
#define NCI_RESET_TYPE_RESET_CONFIG 0x01
@@ -188,6 +192,18 @@
#define NCI_OP_CORE_INIT_CMD nci_opcode_pack(NCI_GID_CORE, 0x01)
+#define NCI_OP_CORE_SET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x02)
+struct set_config_param {
+ __u8 id;
+ __u8 len;
+ __u8 val[NCI_MAX_PARAM_LEN];
+} __packed;
+
+struct nci_core_set_config_cmd {
+ __u8 num_params;
+ struct set_config_param param; /* support 1 param per cmd is enough */
+} __packed;
+
#define NCI_OP_RF_DISCOVER_MAP_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
struct disc_map_config {
__u8 rf_protocol;
@@ -252,6 +268,13 @@
__le32 manufact_specific_info;
} __packed;
+#define NCI_OP_CORE_SET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x02)
+struct nci_core_set_config_rsp {
+ __u8 status;
+ __u8 num_params;
+ __u8 params_id[0]; /* variable size array */
+} __packed;
+
#define NCI_OP_RF_DISCOVER_MAP_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
#define NCI_OP_RF_DISCOVER_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
index feba740..f98674d 100644
--- a/include/net/nfc/nci_core.h
+++ b/include/net/nfc/nci_core.h
@@ -54,6 +54,7 @@
/* NCI timeouts */
#define NCI_RESET_TIMEOUT 5000
#define NCI_INIT_TIMEOUT 5000
+#define NCI_SET_CONFIG_TIMEOUT 5000
#define NCI_RF_DISC_TIMEOUT 5000
#define NCI_RF_DISC_SELECT_TIMEOUT 5000
#define NCI_RF_DEACTIVATE_TIMEOUT 30000
diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c
index f81efe1..f017b78 100644
--- a/net/nfc/nci/core.c
+++ b/net/nfc/nci/core.c
@@ -176,6 +176,27 @@
(1 + ((*num) * sizeof(struct disc_map_config))), &cmd);
}
+struct nci_set_config_param {
+ __u8 id;
+ size_t len;
+ __u8 *val;
+};
+
+static void nci_set_config_req(struct nci_dev *ndev, unsigned long opt)
+{
+ struct nci_set_config_param *param = (struct nci_set_config_param *)opt;
+ struct nci_core_set_config_cmd cmd;
+
+ BUG_ON(param->len > NCI_MAX_PARAM_LEN);
+
+ cmd.num_params = 1;
+ cmd.param.id = param->id;
+ cmd.param.len = param->len;
+ memcpy(cmd.param.val, param->val, param->len);
+
+ nci_send_cmd(ndev, NCI_OP_CORE_SET_CONFIG_CMD, (3 + param->len), &cmd);
+}
+
static void nci_rf_discover_req(struct nci_dev *ndev, unsigned long opt)
{
struct nci_rf_disc_cmd cmd;
@@ -388,6 +409,32 @@
return nci_close_device(ndev);
}
+static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
+{
+ struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
+ struct nci_set_config_param param;
+ __u8 local_gb[NFC_MAX_GT_LEN];
+ int i, rc = 0;
+
+ param.val = nfc_get_local_general_bytes(nfc_dev, ¶m.len);
+ if ((param.val == NULL) || (param.len == 0))
+ return rc;
+
+ if (param.len > NCI_MAX_PARAM_LEN)
+ return -EINVAL;
+
+ for (i = 0; i < param.len; i++)
+ local_gb[param.len-1-i] = param.val[i];
+
+ param.id = NCI_PN_ATR_REQ_GEN_BYTES;
+ param.val = local_gb;
+
+ rc = nci_request(ndev, nci_set_config_req, (unsigned long)¶m,
+ msecs_to_jiffies(NCI_SET_CONFIG_TIMEOUT));
+
+ return rc;
+}
+
static int nci_start_poll(struct nfc_dev *nfc_dev,
__u32 im_protocols, __u32 tm_protocols)
{
@@ -415,6 +462,14 @@
return -EBUSY;
}
+ if (im_protocols & NFC_PROTO_NFC_DEP_MASK) {
+ rc = nci_set_local_general_bytes(nfc_dev);
+ if (rc) {
+ pr_err("failed to set local general bytes\n");
+ return rc;
+ }
+ }
+
rc = nci_request(ndev, nci_rf_discover_req, im_protocols,
msecs_to_jiffies(NCI_RF_DISC_TIMEOUT));
diff --git a/net/nfc/nci/rsp.c b/net/nfc/nci/rsp.c
index 3003c33..dd072f3 100644
--- a/net/nfc/nci/rsp.c
+++ b/net/nfc/nci/rsp.c
@@ -119,6 +119,16 @@
nci_req_complete(ndev, rsp_1->status);
}
+static void nci_core_set_config_rsp_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ struct nci_core_set_config_rsp *rsp = (void *) skb->data;
+
+ pr_debug("status 0x%x\n", rsp->status);
+
+ nci_req_complete(ndev, rsp->status);
+}
+
static void nci_rf_disc_map_rsp_packet(struct nci_dev *ndev,
struct sk_buff *skb)
{
@@ -194,6 +204,10 @@
nci_core_init_rsp_packet(ndev, skb);
break;
+ case NCI_OP_CORE_SET_CONFIG_RSP:
+ nci_core_set_config_rsp_packet(ndev, skb);
+ break;
+
case NCI_OP_RF_DISCOVER_MAP_RSP:
nci_rf_disc_map_rsp_packet(ndev, skb);
break;