core_sgpio.h

6440linuxDriver的源代码

/*
========================================================================
64xx chip SGPIO Defines - Register reside in PCI Configuration
========================================================================
*/

/* SGPIO Registers that are available */
#define Vendor_Unique2           0x44 // Register name used in Spec
#define SGPIO_Init               Vendor_Unique2 //Name as appeared in code
#define SGPIO_Control            0x64
#define SGPIO_Data_Out_L         0x68
#define SGPIO_Data_Out_H         0x6C
#define SGPIO_Data_In_L          0x70
#define SGPIO_Data_In_H          0x74

/* For setting SGPIO mode during initializaton */
#define SGPIO_Mode               (1<<7)

/* For setting SGPIO_Control Register */
#define SGPIO_TRANSFER_LEN(x)    ((x-1)<<4)
#define SGPIO_SELECT_SPEED(x)    (x<<1)
#define SGPIO_START_BIT          (1<<0)

/* Clk Frequency availabe for SGPIO */
#define SGPIO_1KHz               0
#define SGPIO_10KHz              1
#define SGPIO_50KHz              2
#define SGPIO_100KHz             3