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// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (C) 2023 Intel Corporation */
#include "idpf.h"
#include "idpf_lan_pf_regs.h"
#include "idpf_virtchnl.h"
#define IDPF_PF_ITR_IDX_SPACING 0x4
/**
* idpf_ctlq_reg_init - initialize default mailbox registers
* @cq: pointer to the array of create control queues
*/
static void idpf_ctlq_reg_init(struct idpf_ctlq_create_info *cq)
{
int i;
for (i = 0; i < IDPF_NUM_DFLT_MBX_Q; i++) {
struct idpf_ctlq_create_info *ccq = cq + i;
switch (ccq->type) {
case IDPF_CTLQ_TYPE_MAILBOX_TX:
/* set head and tail registers in our local struct */
ccq->reg.head = PF_FW_ATQH;
ccq->reg.tail = PF_FW_ATQT;
ccq->reg.len = PF_FW_ATQLEN;
ccq->reg.bah = PF_FW_ATQBAH;
ccq->reg.bal = PF_FW_ATQBAL;
ccq->reg.len_mask = PF_FW_ATQLEN_ATQLEN_M;
ccq->reg.len_ena_mask = PF_FW_ATQLEN_ATQENABLE_M;
ccq->reg.head_mask = PF_FW_ATQH_ATQH_M;
break;
case IDPF_CTLQ_TYPE_MAILBOX_RX:
/* set head and tail registers in our local struct */
ccq->reg.head = PF_FW_ARQH;
ccq->reg.tail = PF_FW_ARQT;
ccq->reg.len = PF_FW_ARQLEN;
ccq->reg.bah = PF_FW_ARQBAH;
ccq->reg.bal = PF_FW_ARQBAL;
ccq->reg.len_mask = PF_FW_ARQLEN_ARQLEN_M;
ccq->reg.len_ena_mask = PF_FW_ARQLEN_ARQENABLE_M;
ccq->reg.head_mask = PF_FW_ARQH_ARQH_M;
break;
default:
break;
}
}
}
/**
* idpf_mb_intr_reg_init - Initialize mailbox interrupt register
* @adapter: adapter structure
*/
static void idpf_mb_intr_reg_init(struct idpf_adapter *adapter)
{
struct idpf_intr_reg *intr = &adapter->mb_vector.intr_reg;
u32 dyn_ctl = le32_to_cpu(adapter->caps.mailbox_dyn_ctl);
intr->dyn_ctl = idpf_get_reg_addr(adapter, dyn_ctl);
intr->dyn_ctl_intena_m = PF_GLINT_DYN_CTL_INTENA_M;
intr->dyn_ctl_itridx_m = PF_GLINT_DYN_CTL_ITR_INDX_M;
intr->icr_ena = idpf_get_reg_addr(adapter, PF_INT_DIR_OICR_ENA);
intr->icr_ena_ctlq_m = PF_INT_DIR_OICR_ENA_M;
}
/**
* idpf_intr_reg_init - Initialize interrupt registers
* @vport: virtual port structure
*/
static int idpf_intr_reg_init(struct idpf_vport *vport)
{
struct idpf_adapter *adapter = vport->adapter;
int num_vecs = vport->num_q_vectors;
struct idpf_vec_regs *reg_vals;
int num_regs, i, err = 0;
u32 rx_itr, tx_itr;
u16 total_vecs;
total_vecs = idpf_get_reserved_vecs(vport->adapter);
reg_vals = kcalloc(total_vecs, sizeof(struct idpf_vec_regs),
GFP_KERNEL);
if (!reg_vals)
return -ENOMEM;
num_regs = idpf_get_reg_intr_vecs(vport, reg_vals);
if (num_regs < num_vecs) {
err = -EINVAL;
goto free_reg_vals;
}
for (i = 0; i < num_vecs; i++) {
struct idpf_q_vector *q_vector = &vport->q_vectors[i];
u16 vec_id = vport->q_vector_idxs[i] - IDPF_MBX_Q_VEC;
struct idpf_intr_reg *intr = &q_vector->intr_reg;
u32 spacing;
intr->dyn_ctl = idpf_get_reg_addr(adapter,
reg_vals[vec_id].dyn_ctl_reg);
intr->dyn_ctl_intena_m = PF_GLINT_DYN_CTL_INTENA_M;
intr->dyn_ctl_intena_msk_m = PF_GLINT_DYN_CTL_INTENA_MSK_M;
intr->dyn_ctl_itridx_s = PF_GLINT_DYN_CTL_ITR_INDX_S;
intr->dyn_ctl_intrvl_s = PF_GLINT_DYN_CTL_INTERVAL_S;
intr->dyn_ctl_wb_on_itr_m = PF_GLINT_DYN_CTL_WB_ON_ITR_M;
spacing = IDPF_ITR_IDX_SPACING(reg_vals[vec_id].itrn_index_spacing,
IDPF_PF_ITR_IDX_SPACING);
rx_itr = PF_GLINT_ITR_ADDR(VIRTCHNL2_ITR_IDX_0,
reg_vals[vec_id].itrn_reg,
spacing);
tx_itr = PF_GLINT_ITR_ADDR(VIRTCHNL2_ITR_IDX_1,
reg_vals[vec_id].itrn_reg,
spacing);
intr->rx_itr = idpf_get_reg_addr(adapter, rx_itr);
intr->tx_itr = idpf_get_reg_addr(adapter, tx_itr);
}
free_reg_vals:
kfree(reg_vals);
return err;
}
/**
* idpf_reset_reg_init - Initialize reset registers
* @adapter: Driver specific private structure
*/
static void idpf_reset_reg_init(struct idpf_adapter *adapter)
{
adapter->reset_reg.rstat = idpf_get_reg_addr(adapter, PFGEN_RSTAT);
adapter->reset_reg.rstat_m = PFGEN_RSTAT_PFR_STATE_M;
}
/**
* idpf_trigger_reset - trigger reset
* @adapter: Driver specific private structure
* @trig_cause: Reason to trigger a reset
*/
static void idpf_trigger_reset(struct idpf_adapter *adapter,
enum idpf_flags __always_unused trig_cause)
{
u32 reset_reg;
reset_reg = readl(idpf_get_reg_addr(adapter, PFGEN_CTRL));
writel(reset_reg | PFGEN_CTRL_PFSWR,
idpf_get_reg_addr(adapter, PFGEN_CTRL));
}
/**
* idpf_reg_ops_init - Initialize register API function pointers
* @adapter: Driver specific private structure
*/
static void idpf_reg_ops_init(struct idpf_adapter *adapter)
{
adapter->dev_ops.reg_ops.ctlq_reg_init = idpf_ctlq_reg_init;
adapter->dev_ops.reg_ops.intr_reg_init = idpf_intr_reg_init;
adapter->dev_ops.reg_ops.mb_intr_reg_init = idpf_mb_intr_reg_init;
adapter->dev_ops.reg_ops.reset_reg_init = idpf_reset_reg_init;
adapter->dev_ops.reg_ops.trigger_reset = idpf_trigger_reset;
}
/**
* idpf_dev_ops_init - Initialize device API function pointers
* @adapter: Driver specific private structure
*/
void idpf_dev_ops_init(struct idpf_adapter *adapter)
{
idpf_reg_ops_init(adapter);
}
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