DCMD_F3S_GEOINFO

Get the flash geometry

Synopsis:

#include <sys/dcmd_f3s.h>

#define DCMD_F3S_GEOINFO    __DIOTF(_DCMD_F3S, F3S_GEOINFO, f3s_geoinfo_t)

Arguments to devctl():

Argument	Value
`filedes`	A file descriptor that you obtained by opening the device.
`dcmd`	DCMD_F3S_GEOINFO
`dev_data_ptr`	A pointer to a f3s_geoinfo_t structure (see below)
`n_bytes`	`sizeof(f3s_geoinfo_t)`
`dev_info_ptr`	NULL

Description:

This command gets the flash geometry.

Note: This command returns a maximum of 16 geometries. In the future when flash parts have more than 16, there will be an extended form of this command.

Input:

A f3s_geoinfo_t structure:

struct geo_list
{
  uint16_t unit_num;       /* Number of sectors in run */
  uint16_t unit_pow2;      /* Sector size for this run */
};

typedef struct f3s_geoinfo_s
{
  uint32_t status;
  _Paddr64t base;            /* Phys base address */
  uint32_t size;             /* Size of flash */
  uint16_t chipwidth;        /* Width of a single chip, in bytes */
  uint16_t interleave;       /* Number of chips in parallel on data bus */
  uint16_t num_geo;          /* Number of entries in the geo array */
  struct geo_list geo[16];   /* Maximum of 16 distinct geos */
}f3s_geoinfo_t;

Output: