459 lines
11 KiB
C
459 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/pci.h>
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#include <linux/printk.h>
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#include <linux/slab.h>
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#include "nitrox_dev.h"
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#include "nitrox_csr.h"
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#include "nitrox_common.h"
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#include "nitrox_hal.h"
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#include "nitrox_isr.h"
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#include "nitrox_mbx.h"
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/*
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* One vector for each type of ring
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* - NPS packet ring, AQMQ ring and ZQMQ ring
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*/
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#define NR_RING_VECTORS 3
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#define NR_NON_RING_VECTORS 1
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/* base entry for packet ring/port */
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#define PKT_RING_MSIX_BASE 0
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#define NON_RING_MSIX_BASE 192
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/**
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* nps_pkt_slc_isr - IRQ handler for NPS solicit port
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* @irq: irq number
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* @data: argument
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*/
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static irqreturn_t nps_pkt_slc_isr(int irq, void *data)
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{
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struct nitrox_q_vector *qvec = data;
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union nps_pkt_slc_cnts slc_cnts;
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struct nitrox_cmdq *cmdq = qvec->cmdq;
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slc_cnts.value = readq(cmdq->compl_cnt_csr_addr);
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/* New packet on SLC output port */
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if (slc_cnts.s.slc_int)
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tasklet_hi_schedule(&qvec->resp_tasklet);
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return IRQ_HANDLED;
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}
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static void clear_nps_core_err_intr(struct nitrox_device *ndev)
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{
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u64 value;
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/* Write 1 to clear */
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value = nitrox_read_csr(ndev, NPS_CORE_INT);
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nitrox_write_csr(ndev, NPS_CORE_INT, value);
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dev_err_ratelimited(DEV(ndev), "NSP_CORE_INT 0x%016llx\n", value);
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}
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static void clear_nps_pkt_err_intr(struct nitrox_device *ndev)
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{
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union nps_pkt_int pkt_int;
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unsigned long value, offset;
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int i;
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pkt_int.value = nitrox_read_csr(ndev, NPS_PKT_INT);
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dev_err_ratelimited(DEV(ndev), "NPS_PKT_INT 0x%016llx\n",
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pkt_int.value);
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if (pkt_int.s.slc_err) {
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offset = NPS_PKT_SLC_ERR_TYPE;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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dev_err_ratelimited(DEV(ndev),
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"NPS_PKT_SLC_ERR_TYPE 0x%016lx\n", value);
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offset = NPS_PKT_SLC_RERR_LO;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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/* enable the solicit ports */
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for_each_set_bit(i, &value, BITS_PER_LONG)
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enable_pkt_solicit_port(ndev, i);
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dev_err_ratelimited(DEV(ndev),
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"NPS_PKT_SLC_RERR_LO 0x%016lx\n", value);
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offset = NPS_PKT_SLC_RERR_HI;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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dev_err_ratelimited(DEV(ndev),
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"NPS_PKT_SLC_RERR_HI 0x%016lx\n", value);
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}
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if (pkt_int.s.in_err) {
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offset = NPS_PKT_IN_ERR_TYPE;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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dev_err_ratelimited(DEV(ndev),
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"NPS_PKT_IN_ERR_TYPE 0x%016lx\n", value);
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offset = NPS_PKT_IN_RERR_LO;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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/* enable the input ring */
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for_each_set_bit(i, &value, BITS_PER_LONG)
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enable_pkt_input_ring(ndev, i);
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dev_err_ratelimited(DEV(ndev),
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"NPS_PKT_IN_RERR_LO 0x%016lx\n", value);
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offset = NPS_PKT_IN_RERR_HI;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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dev_err_ratelimited(DEV(ndev),
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"NPS_PKT_IN_RERR_HI 0x%016lx\n", value);
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}
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}
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static void clear_pom_err_intr(struct nitrox_device *ndev)
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{
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u64 value;
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value = nitrox_read_csr(ndev, POM_INT);
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nitrox_write_csr(ndev, POM_INT, value);
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dev_err_ratelimited(DEV(ndev), "POM_INT 0x%016llx\n", value);
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}
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static void clear_pem_err_intr(struct nitrox_device *ndev)
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{
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u64 value;
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value = nitrox_read_csr(ndev, PEM0_INT);
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nitrox_write_csr(ndev, PEM0_INT, value);
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dev_err_ratelimited(DEV(ndev), "PEM(0)_INT 0x%016llx\n", value);
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}
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static void clear_lbc_err_intr(struct nitrox_device *ndev)
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{
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union lbc_int lbc_int;
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u64 value, offset;
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int i;
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lbc_int.value = nitrox_read_csr(ndev, LBC_INT);
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dev_err_ratelimited(DEV(ndev), "LBC_INT 0x%016llx\n", lbc_int.value);
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if (lbc_int.s.dma_rd_err) {
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for (i = 0; i < NR_CLUSTERS; i++) {
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offset = EFL_CORE_VF_ERR_INT0X(i);
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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offset = EFL_CORE_VF_ERR_INT1X(i);
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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}
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}
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if (lbc_int.s.cam_soft_err) {
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dev_err_ratelimited(DEV(ndev), "CAM_SOFT_ERR, invalidating LBC\n");
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invalidate_lbc(ndev);
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}
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if (lbc_int.s.pref_dat_len_mismatch_err) {
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offset = LBC_PLM_VF1_64_INT;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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offset = LBC_PLM_VF65_128_INT;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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}
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if (lbc_int.s.rd_dat_len_mismatch_err) {
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offset = LBC_ELM_VF1_64_INT;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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offset = LBC_ELM_VF65_128_INT;
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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}
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nitrox_write_csr(ndev, LBC_INT, lbc_int.value);
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}
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static void clear_efl_err_intr(struct nitrox_device *ndev)
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{
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int i;
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for (i = 0; i < NR_CLUSTERS; i++) {
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union efl_core_int core_int;
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u64 value, offset;
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offset = EFL_CORE_INTX(i);
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core_int.value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, core_int.value);
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dev_err_ratelimited(DEV(ndev), "ELF_CORE(%d)_INT 0x%016llx\n",
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i, core_int.value);
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if (core_int.s.se_err) {
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offset = EFL_CORE_SE_ERR_INTX(i);
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value = nitrox_read_csr(ndev, offset);
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nitrox_write_csr(ndev, offset, value);
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}
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}
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}
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static void clear_bmi_err_intr(struct nitrox_device *ndev)
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{
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u64 value;
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value = nitrox_read_csr(ndev, BMI_INT);
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nitrox_write_csr(ndev, BMI_INT, value);
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dev_err_ratelimited(DEV(ndev), "BMI_INT 0x%016llx\n", value);
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}
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static void nps_core_int_tasklet(unsigned long data)
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{
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struct nitrox_q_vector *qvec = (void *)(uintptr_t)(data);
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struct nitrox_device *ndev = qvec->ndev;
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/* if pf mode do queue recovery */
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if (ndev->mode == __NDEV_MODE_PF) {
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} else {
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/**
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* if VF(s) enabled communicate the error information
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* to VF(s)
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*/
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}
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}
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/*
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* nps_core_int_isr - interrupt handler for NITROX errors and
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* mailbox communication
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*/
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static irqreturn_t nps_core_int_isr(int irq, void *data)
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{
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struct nitrox_q_vector *qvec = data;
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struct nitrox_device *ndev = qvec->ndev;
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union nps_core_int_active core_int;
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core_int.value = nitrox_read_csr(ndev, NPS_CORE_INT_ACTIVE);
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if (core_int.s.nps_core)
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clear_nps_core_err_intr(ndev);
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if (core_int.s.nps_pkt)
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clear_nps_pkt_err_intr(ndev);
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if (core_int.s.pom)
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clear_pom_err_intr(ndev);
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if (core_int.s.pem)
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clear_pem_err_intr(ndev);
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if (core_int.s.lbc)
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clear_lbc_err_intr(ndev);
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if (core_int.s.efl)
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clear_efl_err_intr(ndev);
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if (core_int.s.bmi)
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clear_bmi_err_intr(ndev);
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/* Mailbox interrupt */
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if (core_int.s.mbox)
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nitrox_pf2vf_mbox_handler(ndev);
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/* If more work callback the ISR, set resend */
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core_int.s.resend = 1;
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nitrox_write_csr(ndev, NPS_CORE_INT_ACTIVE, core_int.value);
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return IRQ_HANDLED;
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}
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void nitrox_unregister_interrupts(struct nitrox_device *ndev)
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{
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struct pci_dev *pdev = ndev->pdev;
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int i;
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for (i = 0; i < ndev->num_vecs; i++) {
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struct nitrox_q_vector *qvec;
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int vec;
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qvec = ndev->qvec + i;
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if (!qvec->valid)
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continue;
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/* get the vector number */
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vec = pci_irq_vector(pdev, i);
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irq_set_affinity_hint(vec, NULL);
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free_irq(vec, qvec);
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tasklet_disable(&qvec->resp_tasklet);
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tasklet_kill(&qvec->resp_tasklet);
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qvec->valid = false;
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}
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kfree(ndev->qvec);
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ndev->qvec = NULL;
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pci_free_irq_vectors(pdev);
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}
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int nitrox_register_interrupts(struct nitrox_device *ndev)
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{
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struct pci_dev *pdev = ndev->pdev;
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struct nitrox_q_vector *qvec;
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int nr_vecs, vec, cpu;
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int ret, i;
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/*
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* PF MSI-X vectors
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*
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* Entry 0: NPS PKT ring 0
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* Entry 1: AQMQ ring 0
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* Entry 2: ZQM ring 0
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* Entry 3: NPS PKT ring 1
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* Entry 4: AQMQ ring 1
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* Entry 5: ZQM ring 1
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* ....
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* Entry 192: NPS_CORE_INT_ACTIVE
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*/
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nr_vecs = pci_msix_vec_count(pdev);
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if (nr_vecs < 0) {
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dev_err(DEV(ndev), "Error in getting vec count %d\n", nr_vecs);
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return nr_vecs;
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}
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/* Enable MSI-X */
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ret = pci_alloc_irq_vectors(pdev, nr_vecs, nr_vecs, PCI_IRQ_MSIX);
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if (ret < 0) {
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dev_err(DEV(ndev), "msix vectors %d alloc failed\n", nr_vecs);
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return ret;
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}
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ndev->num_vecs = nr_vecs;
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ndev->qvec = kcalloc(nr_vecs, sizeof(*qvec), GFP_KERNEL);
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if (!ndev->qvec) {
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pci_free_irq_vectors(pdev);
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return -ENOMEM;
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}
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/* request irqs for packet rings/ports */
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for (i = PKT_RING_MSIX_BASE; i < (nr_vecs - 1); i += NR_RING_VECTORS) {
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qvec = &ndev->qvec[i];
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qvec->ring = i / NR_RING_VECTORS;
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if (qvec->ring >= ndev->nr_queues)
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break;
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qvec->cmdq = &ndev->pkt_inq[qvec->ring];
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snprintf(qvec->name, IRQ_NAMESZ, "nitrox-pkt%d", qvec->ring);
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/* get the vector number */
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vec = pci_irq_vector(pdev, i);
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ret = request_irq(vec, nps_pkt_slc_isr, 0, qvec->name, qvec);
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if (ret) {
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dev_err(DEV(ndev), "irq failed for pkt ring/port%d\n",
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qvec->ring);
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goto irq_fail;
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}
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cpu = qvec->ring % num_online_cpus();
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irq_set_affinity_hint(vec, get_cpu_mask(cpu));
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tasklet_init(&qvec->resp_tasklet, pkt_slc_resp_tasklet,
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(unsigned long)qvec);
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qvec->valid = true;
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}
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/* request irqs for non ring vectors */
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i = NON_RING_MSIX_BASE;
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qvec = &ndev->qvec[i];
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qvec->ndev = ndev;
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snprintf(qvec->name, IRQ_NAMESZ, "nitrox-core-int%d", i);
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/* get the vector number */
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vec = pci_irq_vector(pdev, i);
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ret = request_irq(vec, nps_core_int_isr, 0, qvec->name, qvec);
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if (ret) {
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dev_err(DEV(ndev), "irq failed for nitrox-core-int%d\n", i);
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goto irq_fail;
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}
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cpu = num_online_cpus();
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irq_set_affinity_hint(vec, get_cpu_mask(cpu));
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tasklet_init(&qvec->resp_tasklet, nps_core_int_tasklet,
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(unsigned long)qvec);
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qvec->valid = true;
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return 0;
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irq_fail:
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nitrox_unregister_interrupts(ndev);
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return ret;
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}
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void nitrox_sriov_unregister_interrupts(struct nitrox_device *ndev)
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{
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struct pci_dev *pdev = ndev->pdev;
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int i;
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for (i = 0; i < ndev->num_vecs; i++) {
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struct nitrox_q_vector *qvec;
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int vec;
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qvec = ndev->qvec + i;
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if (!qvec->valid)
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continue;
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vec = ndev->iov.msix.vector;
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irq_set_affinity_hint(vec, NULL);
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free_irq(vec, qvec);
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tasklet_disable(&qvec->resp_tasklet);
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tasklet_kill(&qvec->resp_tasklet);
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qvec->valid = false;
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}
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kfree(ndev->qvec);
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ndev->qvec = NULL;
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pci_disable_msix(pdev);
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}
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int nitrox_sriov_register_interupts(struct nitrox_device *ndev)
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{
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struct pci_dev *pdev = ndev->pdev;
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struct nitrox_q_vector *qvec;
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int vec, cpu;
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int ret;
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/**
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* only non ring vectors i.e Entry 192 is available
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* for PF in SR-IOV mode.
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*/
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ndev->iov.msix.entry = NON_RING_MSIX_BASE;
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ret = pci_enable_msix_exact(pdev, &ndev->iov.msix, NR_NON_RING_VECTORS);
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if (ret) {
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dev_err(DEV(ndev), "failed to allocate nps-core-int%d\n",
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NON_RING_MSIX_BASE);
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return ret;
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}
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qvec = kcalloc(NR_NON_RING_VECTORS, sizeof(*qvec), GFP_KERNEL);
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if (!qvec) {
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pci_disable_msix(pdev);
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return -ENOMEM;
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}
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qvec->ndev = ndev;
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ndev->qvec = qvec;
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ndev->num_vecs = NR_NON_RING_VECTORS;
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snprintf(qvec->name, IRQ_NAMESZ, "nitrox-core-int%d",
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NON_RING_MSIX_BASE);
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vec = ndev->iov.msix.vector;
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ret = request_irq(vec, nps_core_int_isr, 0, qvec->name, qvec);
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if (ret) {
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dev_err(DEV(ndev), "irq failed for nitrox-core-int%d\n",
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NON_RING_MSIX_BASE);
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goto iov_irq_fail;
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}
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cpu = num_online_cpus();
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irq_set_affinity_hint(vec, get_cpu_mask(cpu));
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tasklet_init(&qvec->resp_tasklet, nps_core_int_tasklet,
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(unsigned long)qvec);
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qvec->valid = true;
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return 0;
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iov_irq_fail:
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nitrox_sriov_unregister_interrupts(ndev);
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return ret;
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}
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