Commit 5509db4a authored by Cédric Le Goater's avatar Cédric Le Goater Committed by David Gibson
Browse files

ppc/pnv: add a helper to calculate MMIO addresses registers 



Some controllers (ICP, PSI) have a base register address which is
calculated using the chip id.

Signed-off-by: default avatarCédric Le Goater <clg@kaod.org>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 960fbd29

include/hw/ppc/pnv.h

+11 −1
Original line number Diff line number Diff line
@@ -91,14 +91,24 @@ typedef struct PnvChipClass { 
    OBJECT_CHECK(PnvChip, (obj), TYPE_PNV_CHIP_POWER9)



/*

 * This generates a HW chip id depending on an index:

 * This generates a HW chip id depending on an index, as found on a

 * two socket system with dual chip modules :

 *

 *    0x0, 0x1, 0x10, 0x11

 *

 * 4 chips should be the maximum

 *

 * TODO: use a machine property to define the chip ids

 */

#define PNV_CHIP_HWID(i) ((((i) & 0x3e) << 3) | ((i) & 0x1))



/*

 * Converts back a HW chip id to an index. This is useful to calculate

 * the MMIO addresses of some controllers which depend on the chip id.

 */

#define PNV_CHIP_INDEX(chip)                                    \

    (((chip)->chip_id >> 2) * 2 + ((chip)->chip_id & 0x3))



#define TYPE_POWERNV_MACHINE       MACHINE_TYPE_NAME("powernv")

#define POWERNV_MACHINE(obj) \

    OBJECT_CHECK(PnvMachineState, (obj), TYPE_POWERNV_MACHINE)