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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/crypto/marvell/octeontx2/otx2_cptlf.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/crypto/marvell/octeontx2/otx2_cptlf.c')
-rw-r--r--drivers/crypto/marvell/octeontx2/otx2_cptlf.c444
1 files changed, 444 insertions, 0 deletions
diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptlf.c b/drivers/crypto/marvell/octeontx2/otx2_cptlf.c
new file mode 100644
index 000000000..71e5f7943
--- /dev/null
+++ b/drivers/crypto/marvell/octeontx2/otx2_cptlf.c
@@ -0,0 +1,444 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Copyright (C) 2020 Marvell. */
+
+#include "otx2_cpt_common.h"
+#include "otx2_cptlf.h"
+#include "rvu_reg.h"
+
+#define CPT_TIMER_HOLD 0x03F
+#define CPT_COUNT_HOLD 32
+
+static void cptlf_do_set_done_time_wait(struct otx2_cptlf_info *lf,
+ int time_wait)
+{
+ union otx2_cptx_lf_done_wait done_wait;
+
+ done_wait.u = otx2_cpt_read64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+ OTX2_CPT_LF_DONE_WAIT);
+ done_wait.s.time_wait = time_wait;
+ otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+ OTX2_CPT_LF_DONE_WAIT, done_wait.u);
+}
+
+static void cptlf_do_set_done_num_wait(struct otx2_cptlf_info *lf, int num_wait)
+{
+ union otx2_cptx_lf_done_wait done_wait;
+
+ done_wait.u = otx2_cpt_read64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+ OTX2_CPT_LF_DONE_WAIT);
+ done_wait.s.num_wait = num_wait;
+ otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+ OTX2_CPT_LF_DONE_WAIT, done_wait.u);
+}
+
+static void cptlf_set_done_time_wait(struct otx2_cptlfs_info *lfs,
+ int time_wait)
+{
+ int slot;
+
+ for (slot = 0; slot < lfs->lfs_num; slot++)
+ cptlf_do_set_done_time_wait(&lfs->lf[slot], time_wait);
+}
+
+static void cptlf_set_done_num_wait(struct otx2_cptlfs_info *lfs, int num_wait)
+{
+ int slot;
+
+ for (slot = 0; slot < lfs->lfs_num; slot++)
+ cptlf_do_set_done_num_wait(&lfs->lf[slot], num_wait);
+}
+
+static int cptlf_set_pri(struct otx2_cptlf_info *lf, int pri)
+{
+ struct otx2_cptlfs_info *lfs = lf->lfs;
+ union otx2_cptx_af_lf_ctrl lf_ctrl;
+ int ret;
+
+ ret = otx2_cpt_read_af_reg(lfs->mbox, lfs->pdev,
+ CPT_AF_LFX_CTL(lf->slot),
+ &lf_ctrl.u, lfs->blkaddr);
+ if (ret)
+ return ret;
+
+ lf_ctrl.s.pri = pri ? 1 : 0;
+
+ ret = otx2_cpt_write_af_reg(lfs->mbox, lfs->pdev,
+ CPT_AF_LFX_CTL(lf->slot),
+ lf_ctrl.u, lfs->blkaddr);
+ return ret;
+}
+
+static int cptlf_set_eng_grps_mask(struct otx2_cptlf_info *lf,
+ int eng_grps_mask)
+{
+ struct otx2_cptlfs_info *lfs = lf->lfs;
+ union otx2_cptx_af_lf_ctrl lf_ctrl;
+ int ret;
+
+ ret = otx2_cpt_read_af_reg(lfs->mbox, lfs->pdev,
+ CPT_AF_LFX_CTL(lf->slot),
+ &lf_ctrl.u, lfs->blkaddr);
+ if (ret)
+ return ret;
+
+ lf_ctrl.s.grp = eng_grps_mask;
+
+ ret = otx2_cpt_write_af_reg(lfs->mbox, lfs->pdev,
+ CPT_AF_LFX_CTL(lf->slot),
+ lf_ctrl.u, lfs->blkaddr);
+ return ret;
+}
+
+static int cptlf_set_grp_and_pri(struct otx2_cptlfs_info *lfs,
+ int eng_grp_mask, int pri)
+{
+ int slot, ret = 0;
+
+ for (slot = 0; slot < lfs->lfs_num; slot++) {
+ ret = cptlf_set_pri(&lfs->lf[slot], pri);
+ if (ret)
+ return ret;
+
+ ret = cptlf_set_eng_grps_mask(&lfs->lf[slot], eng_grp_mask);
+ if (ret)
+ return ret;
+ }
+ return ret;
+}
+
+static void cptlf_hw_init(struct otx2_cptlfs_info *lfs)
+{
+ /* Disable instruction queues */
+ otx2_cptlf_disable_iqueues(lfs);
+
+ /* Set instruction queues base addresses */
+ otx2_cptlf_set_iqueues_base_addr(lfs);
+
+ /* Set instruction queues sizes */
+ otx2_cptlf_set_iqueues_size(lfs);
+
+ /* Set done interrupts time wait */
+ cptlf_set_done_time_wait(lfs, CPT_TIMER_HOLD);
+
+ /* Set done interrupts num wait */
+ cptlf_set_done_num_wait(lfs, CPT_COUNT_HOLD);
+
+ /* Enable instruction queues */
+ otx2_cptlf_enable_iqueues(lfs);
+}
+
+static void cptlf_hw_cleanup(struct otx2_cptlfs_info *lfs)
+{
+ /* Disable instruction queues */
+ otx2_cptlf_disable_iqueues(lfs);
+}
+
+static void cptlf_set_misc_intrs(struct otx2_cptlfs_info *lfs, u8 enable)
+{
+ union otx2_cptx_lf_misc_int_ena_w1s irq_misc = { .u = 0x0 };
+ u64 reg = enable ? OTX2_CPT_LF_MISC_INT_ENA_W1S :
+ OTX2_CPT_LF_MISC_INT_ENA_W1C;
+ int slot;
+
+ irq_misc.s.fault = 0x1;
+ irq_misc.s.hwerr = 0x1;
+ irq_misc.s.irde = 0x1;
+ irq_misc.s.nqerr = 0x1;
+ irq_misc.s.nwrp = 0x1;
+
+ for (slot = 0; slot < lfs->lfs_num; slot++)
+ otx2_cpt_write64(lfs->reg_base, BLKADDR_CPT0, slot, reg,
+ irq_misc.u);
+}
+
+static void cptlf_enable_intrs(struct otx2_cptlfs_info *lfs)
+{
+ int slot;
+
+ /* Enable done interrupts */
+ for (slot = 0; slot < lfs->lfs_num; slot++)
+ otx2_cpt_write64(lfs->reg_base, BLKADDR_CPT0, slot,
+ OTX2_CPT_LF_DONE_INT_ENA_W1S, 0x1);
+ /* Enable Misc interrupts */
+ cptlf_set_misc_intrs(lfs, true);
+}
+
+static void cptlf_disable_intrs(struct otx2_cptlfs_info *lfs)
+{
+ int slot;
+
+ for (slot = 0; slot < lfs->lfs_num; slot++)
+ otx2_cpt_write64(lfs->reg_base, BLKADDR_CPT0, slot,
+ OTX2_CPT_LF_DONE_INT_ENA_W1C, 0x1);
+ cptlf_set_misc_intrs(lfs, false);
+}
+
+static inline int cptlf_read_done_cnt(struct otx2_cptlf_info *lf)
+{
+ union otx2_cptx_lf_done irq_cnt;
+
+ irq_cnt.u = otx2_cpt_read64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+ OTX2_CPT_LF_DONE);
+ return irq_cnt.s.done;
+}
+
+static irqreturn_t cptlf_misc_intr_handler(int __always_unused irq, void *arg)
+{
+ union otx2_cptx_lf_misc_int irq_misc, irq_misc_ack;
+ struct otx2_cptlf_info *lf = arg;
+ struct device *dev;
+
+ dev = &lf->lfs->pdev->dev;
+ irq_misc.u = otx2_cpt_read64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+ OTX2_CPT_LF_MISC_INT);
+ irq_misc_ack.u = 0x0;
+
+ if (irq_misc.s.fault) {
+ dev_err(dev, "Memory error detected while executing CPT_INST_S, LF %d.\n",
+ lf->slot);
+ irq_misc_ack.s.fault = 0x1;
+
+ } else if (irq_misc.s.hwerr) {
+ dev_err(dev, "HW error from an engine executing CPT_INST_S, LF %d.",
+ lf->slot);
+ irq_misc_ack.s.hwerr = 0x1;
+
+ } else if (irq_misc.s.nwrp) {
+ dev_err(dev, "SMMU fault while writing CPT_RES_S to CPT_INST_S[RES_ADDR], LF %d.\n",
+ lf->slot);
+ irq_misc_ack.s.nwrp = 0x1;
+
+ } else if (irq_misc.s.irde) {
+ dev_err(dev, "Memory error when accessing instruction memory queue CPT_LF_Q_BASE[ADDR].\n");
+ irq_misc_ack.s.irde = 0x1;
+
+ } else if (irq_misc.s.nqerr) {
+ dev_err(dev, "Error enqueuing an instruction received at CPT_LF_NQ.\n");
+ irq_misc_ack.s.nqerr = 0x1;
+
+ } else {
+ dev_err(dev, "Unhandled interrupt in CPT LF %d\n", lf->slot);
+ return IRQ_NONE;
+ }
+
+ /* Acknowledge interrupts */
+ otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+ OTX2_CPT_LF_MISC_INT, irq_misc_ack.u);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t cptlf_done_intr_handler(int irq, void *arg)
+{
+ union otx2_cptx_lf_done_wait done_wait;
+ struct otx2_cptlf_info *lf = arg;
+ int irq_cnt;
+
+ /* Read the number of completed requests */
+ irq_cnt = cptlf_read_done_cnt(lf);
+ if (irq_cnt) {
+ done_wait.u = otx2_cpt_read64(lf->lfs->reg_base, BLKADDR_CPT0,
+ lf->slot, OTX2_CPT_LF_DONE_WAIT);
+ /* Acknowledge the number of completed requests */
+ otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+ OTX2_CPT_LF_DONE_ACK, irq_cnt);
+
+ otx2_cpt_write64(lf->lfs->reg_base, BLKADDR_CPT0, lf->slot,
+ OTX2_CPT_LF_DONE_WAIT, done_wait.u);
+ if (unlikely(!lf->wqe)) {
+ dev_err(&lf->lfs->pdev->dev, "No work for LF %d\n",
+ lf->slot);
+ return IRQ_NONE;
+ }
+
+ /* Schedule processing of completed requests */
+ tasklet_hi_schedule(&lf->wqe->work);
+ }
+ return IRQ_HANDLED;
+}
+
+void otx2_cptlf_unregister_interrupts(struct otx2_cptlfs_info *lfs)
+{
+ int i, offs, vector;
+
+ for (i = 0; i < lfs->lfs_num; i++) {
+ for (offs = 0; offs < OTX2_CPT_LF_MSIX_VECTORS; offs++) {
+ if (!lfs->lf[i].is_irq_reg[offs])
+ continue;
+
+ vector = pci_irq_vector(lfs->pdev,
+ lfs->lf[i].msix_offset + offs);
+ free_irq(vector, &lfs->lf[i]);
+ lfs->lf[i].is_irq_reg[offs] = false;
+ }
+ }
+ cptlf_disable_intrs(lfs);
+}
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_unregister_interrupts,
+ CRYPTO_DEV_OCTEONTX2_CPT);
+
+static int cptlf_do_register_interrrupts(struct otx2_cptlfs_info *lfs,
+ int lf_num, int irq_offset,
+ irq_handler_t handler)
+{
+ int ret, vector;
+
+ vector = pci_irq_vector(lfs->pdev, lfs->lf[lf_num].msix_offset +
+ irq_offset);
+ ret = request_irq(vector, handler, 0,
+ lfs->lf[lf_num].irq_name[irq_offset],
+ &lfs->lf[lf_num]);
+ if (ret)
+ return ret;
+
+ lfs->lf[lf_num].is_irq_reg[irq_offset] = true;
+
+ return ret;
+}
+
+int otx2_cptlf_register_interrupts(struct otx2_cptlfs_info *lfs)
+{
+ int irq_offs, ret, i;
+
+ for (i = 0; i < lfs->lfs_num; i++) {
+ irq_offs = OTX2_CPT_LF_INT_VEC_E_MISC;
+ snprintf(lfs->lf[i].irq_name[irq_offs], 32, "CPTLF Misc%d", i);
+ ret = cptlf_do_register_interrrupts(lfs, i, irq_offs,
+ cptlf_misc_intr_handler);
+ if (ret)
+ goto free_irq;
+
+ irq_offs = OTX2_CPT_LF_INT_VEC_E_DONE;
+ snprintf(lfs->lf[i].irq_name[irq_offs], 32, "OTX2_CPTLF Done%d",
+ i);
+ ret = cptlf_do_register_interrrupts(lfs, i, irq_offs,
+ cptlf_done_intr_handler);
+ if (ret)
+ goto free_irq;
+ }
+ cptlf_enable_intrs(lfs);
+ return 0;
+
+free_irq:
+ otx2_cptlf_unregister_interrupts(lfs);
+ return ret;
+}
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_register_interrupts, CRYPTO_DEV_OCTEONTX2_CPT);
+
+void otx2_cptlf_free_irqs_affinity(struct otx2_cptlfs_info *lfs)
+{
+ int slot, offs;
+
+ for (slot = 0; slot < lfs->lfs_num; slot++) {
+ for (offs = 0; offs < OTX2_CPT_LF_MSIX_VECTORS; offs++)
+ irq_set_affinity_hint(pci_irq_vector(lfs->pdev,
+ lfs->lf[slot].msix_offset +
+ offs), NULL);
+ free_cpumask_var(lfs->lf[slot].affinity_mask);
+ }
+}
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_free_irqs_affinity, CRYPTO_DEV_OCTEONTX2_CPT);
+
+int otx2_cptlf_set_irqs_affinity(struct otx2_cptlfs_info *lfs)
+{
+ struct otx2_cptlf_info *lf = lfs->lf;
+ int slot, offs, ret;
+
+ for (slot = 0; slot < lfs->lfs_num; slot++) {
+ if (!zalloc_cpumask_var(&lf[slot].affinity_mask, GFP_KERNEL)) {
+ dev_err(&lfs->pdev->dev,
+ "cpumask allocation failed for LF %d", slot);
+ ret = -ENOMEM;
+ goto free_affinity_mask;
+ }
+
+ cpumask_set_cpu(cpumask_local_spread(slot,
+ dev_to_node(&lfs->pdev->dev)),
+ lf[slot].affinity_mask);
+
+ for (offs = 0; offs < OTX2_CPT_LF_MSIX_VECTORS; offs++) {
+ ret = irq_set_affinity_hint(pci_irq_vector(lfs->pdev,
+ lf[slot].msix_offset + offs),
+ lf[slot].affinity_mask);
+ if (ret)
+ goto free_affinity_mask;
+ }
+ }
+ return 0;
+
+free_affinity_mask:
+ otx2_cptlf_free_irqs_affinity(lfs);
+ return ret;
+}
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_set_irqs_affinity, CRYPTO_DEV_OCTEONTX2_CPT);
+
+int otx2_cptlf_init(struct otx2_cptlfs_info *lfs, u8 eng_grp_mask, int pri,
+ int lfs_num)
+{
+ int slot, ret;
+
+ if (!lfs->pdev || !lfs->reg_base)
+ return -EINVAL;
+
+ lfs->lfs_num = lfs_num;
+ for (slot = 0; slot < lfs->lfs_num; slot++) {
+ lfs->lf[slot].lfs = lfs;
+ lfs->lf[slot].slot = slot;
+ if (lfs->lmt_base)
+ lfs->lf[slot].lmtline = lfs->lmt_base +
+ (slot * LMTLINE_SIZE);
+ else
+ lfs->lf[slot].lmtline = lfs->reg_base +
+ OTX2_CPT_RVU_FUNC_ADDR_S(BLKADDR_LMT, slot,
+ OTX2_CPT_LMT_LF_LMTLINEX(0));
+
+ lfs->lf[slot].ioreg = lfs->reg_base +
+ OTX2_CPT_RVU_FUNC_ADDR_S(BLKADDR_CPT0, slot,
+ OTX2_CPT_LF_NQX(0));
+ }
+ /* Send request to attach LFs */
+ ret = otx2_cpt_attach_rscrs_msg(lfs);
+ if (ret)
+ goto clear_lfs_num;
+
+ ret = otx2_cpt_alloc_instruction_queues(lfs);
+ if (ret) {
+ dev_err(&lfs->pdev->dev,
+ "Allocating instruction queues failed\n");
+ goto detach_rsrcs;
+ }
+ cptlf_hw_init(lfs);
+ /*
+ * Allow each LF to execute requests destined to any of 8 engine
+ * groups and set queue priority of each LF to high
+ */
+ ret = cptlf_set_grp_and_pri(lfs, eng_grp_mask, pri);
+ if (ret)
+ goto free_iq;
+
+ return 0;
+
+free_iq:
+ otx2_cpt_free_instruction_queues(lfs);
+ cptlf_hw_cleanup(lfs);
+detach_rsrcs:
+ otx2_cpt_detach_rsrcs_msg(lfs);
+clear_lfs_num:
+ lfs->lfs_num = 0;
+ return ret;
+}
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_init, CRYPTO_DEV_OCTEONTX2_CPT);
+
+void otx2_cptlf_shutdown(struct otx2_cptlfs_info *lfs)
+{
+ lfs->lfs_num = 0;
+ /* Cleanup LFs hardware side */
+ cptlf_hw_cleanup(lfs);
+ /* Send request to detach LFs */
+ otx2_cpt_detach_rsrcs_msg(lfs);
+}
+EXPORT_SYMBOL_NS_GPL(otx2_cptlf_shutdown, CRYPTO_DEV_OCTEONTX2_CPT);
+
+MODULE_AUTHOR("Marvell");
+MODULE_DESCRIPTION("Marvell RVU CPT Common module");
+MODULE_LICENSE("GPL");