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| author | Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> | 2017-11-08 03:23:50 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-11-11 23:03:08 +0100 |
| commit | d4ef61b5e8955fb913e2e1a6c1533414859a839d (patch) | |
| tree | cb59a3afc81535a1f7c255f986fc02a72d1d753c /drivers/crypto/nx | |
| parent | powerpc/vas: Create cpu to vas id mapping (diff) | |
| download | linux-d4ef61b5e8955fb913e2e1a6c1533414859a839d.tar.xz linux-d4ef61b5e8955fb913e2e1a6c1533414859a839d.zip | |
powerpc/vas, nx-842: Define and use chip_to_vas_id()
Define a helper, chip_to_vas_id() to map a given chip id to corresponding
vas id.
Normally, callers of vas_rx_win_open() and vas_tx_win_open() want the VAS
window to be on the same chip where the calling thread is executing. These
callers can pass in -1 for the VAS id.
This interface will be useful if a thread running on one chip wants to open
a window on another chip (like the NX-842 driver does during start up).
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/crypto/nx')
| -rw-r--r-- | drivers/crypto/nx/nx-842-powernv.c | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/drivers/crypto/nx/nx-842-powernv.c b/drivers/crypto/nx/nx-842-powernv.c index 874ddf5e9087..eb221ed9bf0e 100644 --- a/drivers/crypto/nx/nx-842-powernv.c +++ b/drivers/crypto/nx/nx-842-powernv.c @@ -847,24 +847,12 @@ static int __init nx842_powernv_probe_vas(struct device_node *pn) return -EINVAL; } - for_each_compatible_node(dn, NULL, "ibm,power9-vas-x") { - if (of_get_ibm_chip_id(dn) == chip_id) - break; - } - - if (!dn) { - pr_err("Missing VAS device node\n"); + vasid = chip_to_vas_id(chip_id); + if (vasid < 0) { + pr_err("Unable to map chip_id %d to vasid\n", chip_id); return -EINVAL; } - if (of_property_read_u32(dn, "ibm,vas-id", &vasid)) { - pr_err("Missing ibm,vas-id device property\n"); - of_node_put(dn); - return -EINVAL; - } - - of_node_put(dn); - for_each_child_of_node(pn, dn) { if (of_device_is_compatible(dn, "ibm,p9-nx-842")) { ret = vas_cfg_coproc_info(dn, chip_id, vasid); |