How to port linux driver code??

QNX DEVELOPERS Realtime and Embedded
1

Hi All,
I need to port linux driver code to QNX driver for the serial port, which uses the pci interface. Please find linux code available with me.
As per the code, a serial core driver was used and in low level tty driver is used.
My queries are as follows,

  1. How to port following stuctures uart_port, uart_info, etc??

  2. How to port struct uart_ops pointer, which defines a list of functions that the serial core uses to call back into the port-specific serial driver. This structure is defined as:
    struct uart_ops {
    unsigned int (*tx_empty)(struct uart_port *);
    void (*set_mctrl)(struct uart_port *,
    unsigned int mctrl);
    unsigned int (*get_mctrl)(struct uart_port *);
    void (*stop_tx)(struct uart_port *,
    unsigned int tty_stop);
    void (*start_tx)(struct uart_port *,
    int (*startup)(struct uart_port *);
    void (*shutdown)(struct uart_port *);
    …
    }

  3. As per my observation, function serial_serocco_start_tx() is writing data on the port and function serial_serocco_handle_irq() is reading data from serial port. Please correct me, if i am wrong ???

  4. Can the QNX structure TTYDEV, TTYCTRL will help me out???

2

QNX serial driver are TOTALLY different then the Linux driver. You need to understand what the Linux driver does and the architecture of the QNX devc-* drivers and write it pretty much from scratch.

3

Hello Mario,
I have started to port the serocco code and initiliazation of pci was done using the standard resource manager. But now i have to port the write and read functionality. As per my observation on linux code ,

  1. serial_serocco_start_tx function would be used for write call of Resoure Manager.

  2. serial_serocco_handle_irq function would be used for read call of Resoure Manager.

    Please correct me if i am wrong ???