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authorSukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>2017-11-08 05:23:50 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2017-11-12 01:03:08 +0300
commitd4ef61b5e8955fb913e2e1a6c1533414859a839d (patch)
treecb59a3afc81535a1f7c255f986fc02a72d1d753c /drivers/crypto
parentca03258b6b338b392c778bed9c7dd56e6a513012 (diff)
downloadlinux-d4ef61b5e8955fb913e2e1a6c1533414859a839d.tar.xz
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')
-rw-r--r--drivers/crypto/nx/nx-842-powernv.c18
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);