1 files changed, 226 insertions, 0 deletions

diff --git a/net/nfc/nci/rsp.c b/net/nfc/nci/rsp.c
new file mode 100644
index 000000000000..0403d4cd0917
--- /dev/null
+++ b/net/nfc/nci/rsp.c
@@ -0,0 +1,226 @@
+/*
+ *  The NFC Controller Interface is the communication protocol between an
+ *  NFC Controller (NFCC) and a Device Host (DH).
+ *
+ *  Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ *  Written by Ilan Elias <ilane@ti.com>
+ *
+ *  Acknowledgements:
+ *  This file is based on hci_event.c, which was written
+ *  by Maxim Krasnyansky.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/bitops.h>
+#include <linux/skbuff.h>
+
+#include "../nfc.h"
+#include <net/nfc/nci.h>
+#include <net/nfc/nci_core.h>
+
+/* Handle NCI Response packets */
+
+static void nci_core_reset_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        struct nci_core_reset_rsp *rsp = (void *) skb->data;
+
+        nfc_dbg("entry, status 0x%x", rsp->status);
+
+        if (rsp->status == NCI_STATUS_OK)
+                ndev->nci_ver = rsp->nci_ver;
+
+        nfc_dbg("nci_ver 0x%x", ndev->nci_ver);
+
+        nci_req_complete(ndev, rsp->status);
+}
+
+static void nci_core_init_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        struct nci_core_init_rsp_1 *rsp_1 = (void *) skb->data;
+        struct nci_core_init_rsp_2 *rsp_2;
+
+        nfc_dbg("entry, status 0x%x", rsp_1->status);
+
+        if (rsp_1->status != NCI_STATUS_OK)
+                return;
+
+        ndev->nfcc_features = __le32_to_cpu(rsp_1->nfcc_features);
+        ndev->num_supported_rf_interfaces = rsp_1->num_supported_rf_interfaces;
+
+        if (ndev->num_supported_rf_interfaces >
+                NCI_MAX_SUPPORTED_RF_INTERFACES) {
+                ndev->num_supported_rf_interfaces =
+                        NCI_MAX_SUPPORTED_RF_INTERFACES;
+        }
+
+        memcpy(ndev->supported_rf_interfaces,
+                rsp_1->supported_rf_interfaces,
+                ndev->num_supported_rf_interfaces);
+
+        rsp_2 = (void *) (skb->data + 6 + ndev->num_supported_rf_interfaces);
+
+        ndev->max_logical_connections =
+                rsp_2->max_logical_connections;
+        ndev->max_routing_table_size =
+                __le16_to_cpu(rsp_2->max_routing_table_size);
+        ndev->max_control_packet_payload_length =
+                rsp_2->max_control_packet_payload_length;
+        ndev->rf_sending_buffer_size =
+                __le16_to_cpu(rsp_2->rf_sending_buffer_size);
+        ndev->rf_receiving_buffer_size =
+                __le16_to_cpu(rsp_2->rf_receiving_buffer_size);
+        ndev->manufacturer_id =
+                __le16_to_cpu(rsp_2->manufacturer_id);
+
+        nfc_dbg("nfcc_features 0x%x",
+                ndev->nfcc_features);
+        nfc_dbg("num_supported_rf_interfaces %d",
+                ndev->num_supported_rf_interfaces);
+        nfc_dbg("supported_rf_interfaces[0] 0x%x",
+                ndev->supported_rf_interfaces[0]);
+        nfc_dbg("supported_rf_interfaces[1] 0x%x",
+                ndev->supported_rf_interfaces[1]);
+        nfc_dbg("supported_rf_interfaces[2] 0x%x",
+                ndev->supported_rf_interfaces[2]);
+        nfc_dbg("supported_rf_interfaces[3] 0x%x",
+                ndev->supported_rf_interfaces[3]);
+        nfc_dbg("max_logical_connections %d",
+                ndev->max_logical_connections);
+        nfc_dbg("max_routing_table_size %d",
+                ndev->max_routing_table_size);
+        nfc_dbg("max_control_packet_payload_length %d",
+                ndev->max_control_packet_payload_length);
+        nfc_dbg("rf_sending_buffer_size %d",
+                ndev->rf_sending_buffer_size);
+        nfc_dbg("rf_receiving_buffer_size %d",
+                ndev->rf_receiving_buffer_size);
+        nfc_dbg("manufacturer_id 0x%x",
+                ndev->manufacturer_id);
+
+        nci_req_complete(ndev, rsp_1->status);
+}
+
+static void nci_core_conn_create_rsp_packet(struct nci_dev *ndev,
+                                                struct sk_buff *skb)
+{
+        struct nci_core_conn_create_rsp *rsp = (void *) skb->data;
+
+        nfc_dbg("entry, status 0x%x", rsp->status);
+
+        if (rsp->status != NCI_STATUS_OK)
+                return;
+
+        ndev->max_pkt_payload_size = rsp->max_pkt_payload_size;
+        ndev->initial_num_credits = rsp->initial_num_credits;
+        ndev->conn_id = rsp->conn_id;
+
+        atomic_set(&ndev->credits_cnt, ndev->initial_num_credits);
+
+        nfc_dbg("max_pkt_payload_size %d", ndev->max_pkt_payload_size);
+        nfc_dbg("initial_num_credits %d", ndev->initial_num_credits);
+        nfc_dbg("conn_id %d", ndev->conn_id);
+}
+
+static void nci_rf_disc_map_rsp_packet(struct nci_dev *ndev,
+                                        struct sk_buff *skb)
+{
+        __u8 status = skb->data[0];
+
+        nfc_dbg("entry, status 0x%x", status);
+
+        nci_req_complete(ndev, status);
+}
+
+static void nci_rf_disc_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        __u8 status = skb->data[0];
+
+        nfc_dbg("entry, status 0x%x", status);
+
+        if (status == NCI_STATUS_OK)
+                set_bit(NCI_DISCOVERY, &ndev->flags);
+
+        nci_req_complete(ndev, status);
+}
+
+static void nci_rf_deactivate_rsp_packet(struct nci_dev *ndev,
+                                        struct sk_buff *skb)
+{
+        __u8 status = skb->data[0];
+
+        nfc_dbg("entry, status 0x%x", status);
+
+        clear_bit(NCI_DISCOVERY, &ndev->flags);
+
+        nci_req_complete(ndev, status);
+}
+
+void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+        __u16 rsp_opcode = nci_opcode(skb->data);
+
+        /* we got a rsp, stop the cmd timer */
+        del_timer(&ndev->cmd_timer);
+
+        nfc_dbg("NCI RX: MT=rsp, PBF=%d, GID=0x%x, OID=0x%x, plen=%d",
+                        nci_pbf(skb->data),
+                        nci_opcode_gid(rsp_opcode),
+                        nci_opcode_oid(rsp_opcode),
+                        nci_plen(skb->data));
+
+        /* strip the nci control header */
+        skb_pull(skb, NCI_CTRL_HDR_SIZE);
+
+        switch (rsp_opcode) {
+        case NCI_OP_CORE_RESET_RSP:
+                nci_core_reset_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_CORE_INIT_RSP:
+                nci_core_init_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_CORE_CONN_CREATE_RSP:
+                nci_core_conn_create_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_RF_DISCOVER_MAP_RSP:
+                nci_rf_disc_map_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_RF_DISCOVER_RSP:
+                nci_rf_disc_rsp_packet(ndev, skb);
+                break;
+
+        case NCI_OP_RF_DEACTIVATE_RSP:
+                nci_rf_deactivate_rsp_packet(ndev, skb);
+                break;
+
+        default:
+                nfc_err("unknown rsp opcode 0x%x", rsp_opcode);
+                break;
+        }
+
+        kfree_skb(skb);
+
+        /* trigger the next cmd */
+        atomic_set(&ndev->cmd_cnt, 1);
+        if (!skb_queue_empty(&ndev->cmd_q))
+                queue_work(ndev->cmd_wq, &ndev->cmd_work);
+}