[Skiboot] [RFC PATCH 11/23] platform/firenze-pci: Use generic freset method

[Oliver O'Halloran]

For slots where we have power control we can use the generic FRESET
method.

Signed-off-by: Oliver O'Halloran <oohall at gmail.com>
---
 platforms/ibm-fsp/firenze-pci.c | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/platforms/ibm-fsp/firenze-pci.c b/platforms/ibm-fsp/firenze-pci.c
index 36414425e80d..3221ba92a83d 100644
--- a/platforms/ibm-fsp/firenze-pci.c
+++ b/platforms/ibm-fsp/firenze-pci.c
@@ -360,14 +360,32 @@ bail:
 	firenze_inv_cnt = 0;
 }
 
-static int64_t __unused firenze_pci_slot_get_power_state(struct pci_slot *slot,
+static int64_t firenze_pci_inband_perst(struct pci_slot *slot,
+		bool val)
+{
+	struct firenze_pci_slot *plat_slot = slot->data;
+	uint16_t ctrl, bdfn = slot->pd->bdfn;
+
+	pci_cfg_read16(slot->phb, bdfn, plat_slot->perst_reg, &ctrl);
+
+	if (val)
+		ctrl |= plat_slot->perst_bit;
+	else
+		ctrl &= ~plat_slot->perst_bit;
+
+	pci_cfg_write16(slot->phb, bdfn, plat_slot->perst_reg, ctrl);
+
+	return OPAL_SUCCESS;
+}
+
+static int64_t firenze_pci_slot_get_power_state(struct pci_slot *slot,
 						uint8_t *val)
 {
 	*val = slot->power_state;
 	return OPAL_SUCCESS;
 }
 
-static int64_t __unused firenze_pci_slot_set_power_state(struct pci_slot *slot,
+static int64_t firenze_pci_slot_set_power_state(struct pci_slot *slot,
 						uint8_t val)
 {
 	struct firenze_pci_slot *plat_slot = slot->data;
@@ -644,6 +662,9 @@ static void firenze_pci_slot_init(struct pci_slot *slot)
 	 */
 	if (plat_slot->req) {
 		/* placeholder */
+		slot->ops.freset = pci_slot_generic_freset;
+		slot->ops.get_power_state = firenze_pci_slot_get_power_state;
+		slot->ops.set_power_state = firenze_pci_slot_set_power_state;
 		prlog(PR_DEBUG, "%016llx: External power mgt initialized\n",
 		      slot->id);
 	} else if (info->inband_perst) {
-- 
2.20.1