[Skiboot] [PATCH] phb4: Do not set the PBCQ Tunnel BAR register when enabling capi mode.
Philippe Bergheaud
felix at linux.ibm.com
Tue Apr 3 23:27:46 AEST 2018
The cxl driver will set the capi value, like other drivers already do.
Signed-off-by: Philippe Bergheaud <felix at linux.ibm.com>
---
hw/phb4.c | 19 -------------------
1 file changed, 19 deletions(-)
diff --git a/hw/phb4.c b/hw/phb4.c
index e45be01f..7ef6f3d4 100644
--- a/hw/phb4.c
+++ b/hw/phb4.c
@@ -3900,25 +3900,6 @@ static int64_t enable_capi_mode(struct phb4 *p, uint64_t pe_number,
((u64)CAPIMASK << 32) | PHB_CAPI_CMPM_ENABLE);
if (!(p->rev == PHB4_REV_NIMBUS_DD10)) {
- /*
- * PBCQ Tunnel Bar Register
- *
- * If set, for example by a driver that may already have
- * tweaked the tunnel bar, then we do not touch it when
- * entering capi mode. It's up to the driver to handle it.
- *
- * If unset, then we use the PSL_TNR_ADDR[TNR_Addr] reset
- * value. For fpga/cxl, this code will define the tunnel bar.
- */
- xscom_read(p->chip_id,
- p->pe_stk_xscom + XPEC_NEST_STK_TUNNEL_BAR, ®);
- if (!reg) {
- reg = 0x00020000E0000000ull << 8;
- xscom_write(p->chip_id,
- p->pe_stk_xscom + XPEC_NEST_STK_TUNNEL_BAR,
- reg);
- }
-
/* PB AIB Hardware Control Register
* Wait 32 PCI clocks for a credit to become available
* before rejecting.
--
2.16.2
More information about the Skiboot
mailing list