diff options
| author | Cédric Le Goater <clg@kaod.org> | 2017-04-03 09:46:04 +0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2017-04-26 12:00:42 +1000 |
| commit | 5509db4aec13217022d41b131c8216040fb723f1 (patch) | |
| tree | 1598354b8bacb5cef523653764d5d4907c666207 | |
| parent | 960fbd29e56866ff7b1f2c6a24082774fd254bda (diff) | |
| download | qemu-5509db4aec13217022d41b131c8216040fb723f1.tar.gz | |
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: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
| -rw-r--r-- | include/hw/ppc/pnv.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/include/hw/ppc/pnv.h b/include/hw/ppc/pnv.h index df98a72006..5693ba181d 100644 --- a/include/hw/ppc/pnv.h +++ b/include/hw/ppc/pnv.h @@ -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) |