static int hci_h4p_send_negotiation(struct hci_h4p_info *info, struct sk_buff *skb) { unsigned long flags; int err; NBT_DBG("Sending negotiation..\n"); hci_h4p_change_speed(info, INIT_SPEED); hci_h4p_set_rts(info, 1); info->init_error = 0; init_completion(&info->init_completion); skb_queue_tail(&info->txq, skb); spin_lock_irqsave(&info->lock, flags); hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) | UART_IER_THRI); spin_unlock_irqrestore(&info->lock, flags); if (!wait_for_completion_interruptible_timeout(&info->init_completion, msecs_to_jiffies(1000))) return -ETIMEDOUT; if (info->init_error < 0) return info->init_error; /* Change to operational settings */ hci_h4p_set_auto_ctsrts(info, 0, UART_EFR_RTS); hci_h4p_set_rts(info, 0); hci_h4p_change_speed(info, MAX_BAUD_RATE); err = hci_h4p_wait_for_cts(info, 1, 100); if (err < 0) return err; hci_h4p_set_auto_ctsrts(info, 1, UART_EFR_RTS); init_completion(&info->init_completion); err = hci_h4p_send_alive_packet(info); if (err < 0) return err; if (!wait_for_completion_interruptible_timeout(&info->init_completion, msecs_to_jiffies(1000))) return -ETIMEDOUT; if (info->init_error < 0) return info->init_error; NBT_DBG("Negotiation succesful\n"); return 0; }
int hci_h4p_bc4_send_fw(struct hci_h4p_info *info, struct sk_buff_head *fw_queue) { static const u8 nokia_oui[3] = {0x00, 0x19, 0x4F}; struct sk_buff *skb; unsigned int offset; int retries, count, i, not_valid; unsigned long flags; info->fw_error = 0; BT_DBG("Sending firmware"); skb = skb_dequeue(fw_queue); if (!skb) return -ENOMSG; /* Check if this is bd_address packet */ if (skb->data[15] == 0x01 && skb->data[16] == 0x00) { offset = 21; skb->data[offset + 1] = 0x00; skb->data[offset + 5] = 0x00; not_valid = 1; for (i = 0; i < 6; i++) { if (info->bd_addr[i] != 0x00) { not_valid = 0; break; } } if (not_valid) { dev_info(info->dev, "Valid bluetooth address not found, setting some random\n"); /* When address is not valid, use some random */ memcpy(info->bd_addr, nokia_oui, 3); get_random_bytes(info->bd_addr + 3, 3); } skb->data[offset + 7] = info->bd_addr[0]; skb->data[offset + 6] = info->bd_addr[1]; skb->data[offset + 4] = info->bd_addr[2]; skb->data[offset + 0] = info->bd_addr[3]; skb->data[offset + 3] = info->bd_addr[4]; skb->data[offset + 2] = info->bd_addr[5]; } for (count = 1; ; count++) { BT_DBG("Sending firmware command %d", count); init_completion(&info->fw_completion); skb_queue_tail(&info->txq, skb); spin_lock_irqsave(&info->lock, flags); hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) | UART_IER_THRI); spin_unlock_irqrestore(&info->lock, flags); skb = skb_dequeue(fw_queue); if (!skb) break; if (!wait_for_completion_timeout(&info->fw_completion, msecs_to_jiffies(1000))) { dev_err(info->dev, "No reply to fw command\n"); return -ETIMEDOUT; } if (info->fw_error) { dev_err(info->dev, "FW error\n"); return -EPROTO; } }; /* Wait for chip warm reset */ retries = 100; while ((!skb_queue_empty(&info->txq) || !(hci_h4p_inb(info, UART_LSR) & UART_LSR_TEMT)) && retries--) { msleep(10); } if (!retries) { dev_err(info->dev, "Transmitter not empty\n"); return -ETIMEDOUT; } hci_h4p_change_speed(info, BC4_MAX_BAUD_RATE); if (hci_h4p_wait_for_cts(info, 1, 100)) { dev_err(info->dev, "cts didn't deassert after final speed\n"); return -ETIMEDOUT; } retries = 100; do { init_completion(&info->init_completion); hci_h4p_send_alive_packet(info); retries--; } while (!wait_for_completion_timeout(&info->init_completion, 100) && retries > 0); if (!retries) { dev_err(info->dev, "No alive reply after speed change\n"); return -ETIMEDOUT; } return 0; }