#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/types.h>
+#include <linux/firmware.h>
#include <linux/nfc.h>
#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>
#define NFCWILINK_OFFSET_LEN_IN_HDR 1
#define NFCWILINK_LEN_SIZE 2
#define NFCWILINK_REGISTER_TIMEOUT 8000 /* 8 sec */
+#define NFCWILINK_CMD_TIMEOUT 5000 /* 5 sec */
+
+#define BTS_FILE_NAME_MAX_SIZE 40
+#define BTS_FILE_HDR_MAGIC 0x42535442
+#define BTS_FILE_CMD_MAX_LEN 0xff
+#define BTS_FILE_ACTION_TYPE_SEND_CMD 1
+
+#define NCI_VS_NFCC_INFO_CMD_GID 0x2f
+#define NCI_VS_NFCC_INFO_CMD_OID 0x12
+#define NCI_VS_NFCC_INFO_RSP_GID 0x4f
+#define NCI_VS_NFCC_INFO_RSP_OID 0x12
struct nfcwilink_hdr {
__u8 chnl;
__le16 len;
} __packed;
+struct nci_vs_nfcc_info_cmd {
+ __u8 gid;
+ __u8 oid;
+ __u8 plen;
+} __packed;
+
+struct nci_vs_nfcc_info_rsp {
+ __u8 gid;
+ __u8 oid;
+ __u8 plen;
+ __u8 status;
+ __u8 hw_id;
+ __u8 sw_ver_x;
+ __u8 sw_ver_z;
+ __u8 patch_id;
+} __packed;
+
+struct bts_file_hdr {
+ __le32 magic;
+ __le32 ver;
+ __u8 rfu[24];
+ __u8 actions[0];
+} __packed;
+
+struct bts_file_action {
+ __le16 type;
+ __le16 len;
+ __u8 data[0];
+} __packed;
+
struct nfcwilink {
struct platform_device *pdev;
struct nci_dev *ndev;
char st_register_cb_status;
long (*st_write) (struct sk_buff *);
- struct completion st_register_completed;
+
+ struct completion completed;
+
+ struct nci_vs_nfcc_info_rsp nfcc_info;
};
/* NFCWILINK driver flags */
enum {
NFCWILINK_RUNNING,
+ NFCWILINK_FW_DOWNLOAD,
};
+static int nfcwilink_send(struct sk_buff *skb);
+
+static inline struct sk_buff *nfcwilink_skb_alloc(unsigned int len, gfp_t how)
+{
+ struct sk_buff *skb;
+
+ skb = alloc_skb(len + NFCWILINK_HDR_LEN, how);
+ if (skb)
+ skb_reserve(skb, NFCWILINK_HDR_LEN);
+
+ return skb;
+}
+
+static void nfcwilink_fw_download_receive(struct nfcwilink *drv,
+ struct sk_buff *skb)
+{
+ struct nci_vs_nfcc_info_rsp *rsp = (void *)skb->data;
+
+ /* Detect NCI_VS_NFCC_INFO_RSP and store the result */
+ if ((skb->len > 3) && (rsp->gid == NCI_VS_NFCC_INFO_RSP_GID) &&
+ (rsp->oid == NCI_VS_NFCC_INFO_RSP_OID)) {
+ memcpy(&drv->nfcc_info, rsp,
+ sizeof(struct nci_vs_nfcc_info_rsp));
+ }
+
+ kfree_skb(skb);
+
+ complete(&drv->completed);
+}
+
+static int nfcwilink_get_bts_file_name(struct nfcwilink *drv, char *file_name)
+{
+ struct nci_vs_nfcc_info_cmd *cmd;
+ struct sk_buff *skb;
+ unsigned long comp_ret;
+ int rc;
+
+ nfc_dev_dbg(&drv->pdev->dev, "get_bts_file_name entry");
+
+ skb = nfcwilink_skb_alloc(sizeof(struct nci_vs_nfcc_info_cmd),
+ GFP_KERNEL);
+ if (!skb) {
+ nfc_dev_err(&drv->pdev->dev,
+ "no memory for nci_vs_nfcc_info_cmd");
+ return -ENOMEM;
+ }
+
+ skb->dev = (void *)drv->ndev;
+
+ cmd = (struct nci_vs_nfcc_info_cmd *)
+ skb_put(skb, sizeof(struct nci_vs_nfcc_info_cmd));
+ cmd->gid = NCI_VS_NFCC_INFO_CMD_GID;
+ cmd->oid = NCI_VS_NFCC_INFO_CMD_OID;
+ cmd->plen = 0;
+
+ drv->nfcc_info.plen = 0;
+
+ rc = nfcwilink_send(skb);
+ if (rc)
+ return rc;
+
+ comp_ret = wait_for_completion_timeout(&drv->completed,
+ msecs_to_jiffies(NFCWILINK_CMD_TIMEOUT));
+ nfc_dev_dbg(&drv->pdev->dev, "wait_for_completion_timeout returned %ld",
+ comp_ret);
+ if (comp_ret == 0) {
+ nfc_dev_err(&drv->pdev->dev,
+ "timeout on wait_for_completion_timeout");
+ return -ETIMEDOUT;
+ }
+
+ nfc_dev_dbg(&drv->pdev->dev, "nci_vs_nfcc_info_rsp: plen %d, status %d",
+ drv->nfcc_info.plen,
+ drv->nfcc_info.status);
+
+ if ((drv->nfcc_info.plen != 5) || (drv->nfcc_info.status != 0)) {
+ nfc_dev_err(&drv->pdev->dev,
+ "invalid nci_vs_nfcc_info_rsp");
+ return -EINVAL;
+ }
+
+ snprintf(file_name, BTS_FILE_NAME_MAX_SIZE,
+ "TINfcInit_%d.%d.%d.%d.bts",
+ drv->nfcc_info.hw_id,
+ drv->nfcc_info.sw_ver_x,
+ drv->nfcc_info.sw_ver_z,
+ drv->nfcc_info.patch_id);
+
+ nfc_dev_info(&drv->pdev->dev, "nfcwilink FW file name: %s", file_name);
+
+ return 0;
+}
+
+static int nfcwilink_send_bts_cmd(struct nfcwilink *drv, __u8 *data, int len)
+{
+ struct nfcwilink_hdr *hdr = (struct nfcwilink_hdr *)data;
+ struct sk_buff *skb;
+ unsigned long comp_ret;
+ int rc;
+
+ nfc_dev_dbg(&drv->pdev->dev, "send_bts_cmd entry");
+
+ /* verify valid cmd for the NFC channel */
+ if ((len <= sizeof(struct nfcwilink_hdr)) ||
+ (len > BTS_FILE_CMD_MAX_LEN) ||
+ (hdr->chnl != NFCWILINK_CHNL) ||
+ (hdr->opcode != NFCWILINK_OPCODE)) {
+ nfc_dev_err(&drv->pdev->dev,
+ "ignoring invalid bts cmd, len %d, chnl %d, opcode %d",
+ len, hdr->chnl, hdr->opcode);
+ return 0;
+ }
+
+ /* remove the ST header */
+ len -= sizeof(struct nfcwilink_hdr);
+ data += sizeof(struct nfcwilink_hdr);
+
+ skb = nfcwilink_skb_alloc(len, GFP_KERNEL);
+ if (!skb) {
+ nfc_dev_err(&drv->pdev->dev, "no memory for bts cmd");
+ return -ENOMEM;
+ }
+
+ skb->dev = (void *)drv->ndev;
+
+ memcpy(skb_put(skb, len), data, len);
+
+ rc = nfcwilink_send(skb);
+ if (rc)
+ return rc;
+
+ comp_ret = wait_for_completion_timeout(&drv->completed,
+ msecs_to_jiffies(NFCWILINK_CMD_TIMEOUT));
+ nfc_dev_dbg(&drv->pdev->dev, "wait_for_completion_timeout returned %ld",
+ comp_ret);
+ if (comp_ret == 0) {
+ nfc_dev_err(&drv->pdev->dev,
+ "timeout on wait_for_completion_timeout");
+ return -ETIMEDOUT;
+ }
+
+ return 0;
+}
+
+static int nfcwilink_download_fw(struct nfcwilink *drv)
+{
+ unsigned char file_name[BTS_FILE_NAME_MAX_SIZE];
+ const struct firmware *fw;
+ __u16 action_type, action_len;
+ __u8 *ptr;
+ int len, rc;
+
+ nfc_dev_dbg(&drv->pdev->dev, "download_fw entry");
+
+ set_bit(NFCWILINK_FW_DOWNLOAD, &drv->flags);
+
+ rc = nfcwilink_get_bts_file_name(drv, file_name);
+ if (rc)
+ goto exit;
+
+ rc = request_firmware(&fw, file_name, &drv->pdev->dev);
+ if (rc) {
+ nfc_dev_err(&drv->pdev->dev, "request_firmware failed %d", rc);
+
+ /* if the file is not found, don't exit with failure */
+ if (rc == -ENOENT)
+ rc = 0;
+
+ goto exit;
+ }
+
+ len = fw->size;
+ ptr = (__u8 *)fw->data;
+
+ if ((len == 0) || (ptr == NULL)) {
+ nfc_dev_dbg(&drv->pdev->dev,
+ "request_firmware returned size %d", len);
+ goto release_fw;
+ }
+
+ if (__le32_to_cpu(((struct bts_file_hdr *)ptr)->magic) !=
+ BTS_FILE_HDR_MAGIC) {
+ nfc_dev_err(&drv->pdev->dev, "wrong bts magic number");
+ rc = -EINVAL;
+ goto release_fw;
+ }
+
+ /* remove the BTS header */
+ len -= sizeof(struct bts_file_hdr);
+ ptr += sizeof(struct bts_file_hdr);
+
+ while (len > 0) {
+ action_type =
+ __le16_to_cpu(((struct bts_file_action *)ptr)->type);
+ action_len =
+ __le16_to_cpu(((struct bts_file_action *)ptr)->len);
+
+ nfc_dev_dbg(&drv->pdev->dev, "bts_file_action type %d, len %d",
+ action_type, action_len);
+
+ switch (action_type) {
+ case BTS_FILE_ACTION_TYPE_SEND_CMD:
+ rc = nfcwilink_send_bts_cmd(drv,
+ ((struct bts_file_action *)ptr)->data,
+ action_len);
+ if (rc)
+ goto release_fw;
+ break;
+ }
+
+ /* advance to the next action */
+ len -= (sizeof(struct bts_file_action) + action_len);
+ ptr += (sizeof(struct bts_file_action) + action_len);
+ }
+
+release_fw:
+ release_firmware(fw);
+
+exit:
+ clear_bit(NFCWILINK_FW_DOWNLOAD, &drv->flags);
+ return rc;
+}
+
/* Called by ST when registration is complete */
static void nfcwilink_register_complete(void *priv_data, char data)
{
drv->st_register_cb_status = data;
/* complete the wait in nfc_st_open() */
- complete(&drv->st_register_completed);
+ complete(&drv->completed);
}
/* Called by ST when receive data is available */
(apart for the chnl byte, which is not received in the hdr) */
skb_pull(skb, (NFCWILINK_HDR_LEN-1));
+ if (test_bit(NFCWILINK_FW_DOWNLOAD, &drv->flags)) {
+ nfcwilink_fw_download_receive(drv, skb);
+ return 0;
+ }
+
skb->dev = (void *) drv->ndev;
/* Forward skb to NCI core layer */
nfcwilink_proto.priv_data = drv;
- init_completion(&drv->st_register_completed);
+ init_completion(&drv->completed);
drv->st_register_cb_status = -EINPROGRESS;
rc = st_register(&nfcwilink_proto);
if (rc < 0) {
if (rc == -EINPROGRESS) {
comp_ret = wait_for_completion_timeout(
- &drv->st_register_completed,
+ &drv->completed,
msecs_to_jiffies(NFCWILINK_REGISTER_TIMEOUT));
nfc_dev_dbg(&drv->pdev->dev,
BUG_ON(nfcwilink_proto.write == NULL);
drv->st_write = nfcwilink_proto.write;
+ if (nfcwilink_download_fw(drv)) {
+ nfc_dev_err(&drv->pdev->dev, "nfcwilink_download_fw failed %d",
+ rc);
+ /* open should succeed, even if the FW download failed */
+ }
+
goto exit;
clear_exit:
projects / mirror_ubuntu-focal-kernel.git / commitdiff