1 files changed, 149 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/irdma/icrdma_hw.c b/drivers/infiniband/hw/irdma/icrdma_hw.c
new file mode 100644
index 000000000000..cf53b17510cd
--- /dev/null
+++ b/drivers/infiniband/hw/irdma/icrdma_hw.c
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0 or Linux-OpenIB
+/* Copyright (c) 2017 - 2021 Intel Corporation */
+#include "osdep.h"
+#include "type.h"
+#include "icrdma_hw.h"
+
+static u32 icrdma_regs[IRDMA_MAX_REGS] = {
+	PFPE_CQPTAIL,
+	PFPE_CQPDB,
+	PFPE_CCQPSTATUS,
+	PFPE_CCQPHIGH,
+	PFPE_CCQPLOW,
+	PFPE_CQARM,
+	PFPE_CQACK,
+	PFPE_AEQALLOC,
+	PFPE_CQPERRCODES,
+	PFPE_WQEALLOC,
+	GLINT_DYN_CTL(0),
+	ICRDMA_DB_ADDR_OFFSET,
+
+	GLPCI_LBARCTRL,
+	GLPE_CPUSTATUS0,
+	GLPE_CPUSTATUS1,
+	GLPE_CPUSTATUS2,
+	PFINT_AEQCTL,
+	GLINT_CEQCTL(0),
+	VSIQF_PE_CTL1(0),
+	PFHMC_PDINV,
+	GLHMC_VFPDINV(0),
+	GLPE_CRITERR,
+	GLINT_RATE(0),
+};
+
+static u64 icrdma_masks[IRDMA_MAX_MASKS] = {
+	ICRDMA_CCQPSTATUS_CCQP_DONE,
+	ICRDMA_CCQPSTATUS_CCQP_ERR,
+	ICRDMA_CQPSQ_STAG_PDID,
+	ICRDMA_CQPSQ_CQ_CEQID,
+	ICRDMA_CQPSQ_CQ_CQID,
+	ICRDMA_COMMIT_FPM_CQCNT,
+};
+
+static u64 icrdma_shifts[IRDMA_MAX_SHIFTS] = {
+	ICRDMA_CCQPSTATUS_CCQP_DONE_S,
+	ICRDMA_CCQPSTATUS_CCQP_ERR_S,
+	ICRDMA_CQPSQ_STAG_PDID_S,
+	ICRDMA_CQPSQ_CQ_CEQID_S,
+	ICRDMA_CQPSQ_CQ_CQID_S,
+	ICRDMA_COMMIT_FPM_CQCNT_S,
+};
+
+/**
+ * icrdma_ena_irq - Enable interrupt
+ * @dev: pointer to the device structure
+ * @idx: vector index
+ */
+static void icrdma_ena_irq(struct irdma_sc_dev *dev, u32 idx)
+{
+	u32 val;
+	u32 interval = 0;
+
+	if (dev->ceq_itr && dev->aeq->msix_idx != idx)
+		interval = dev->ceq_itr >> 1; /* 2 usec units */
+	val = FIELD_PREP(IRDMA_GLINT_DYN_CTL_ITR_INDX, 0) |
+	      FIELD_PREP(IRDMA_GLINT_DYN_CTL_INTERVAL, interval) |
+	      FIELD_PREP(IRDMA_GLINT_DYN_CTL_INTENA, 1) |
+	      FIELD_PREP(IRDMA_GLINT_DYN_CTL_CLEARPBA, 1);
+
+	if (dev->hw_attrs.uk_attrs.hw_rev != IRDMA_GEN_1)
+		writel(val, dev->hw_regs[IRDMA_GLINT_DYN_CTL] + idx);
+	else
+		writel(val, dev->hw_regs[IRDMA_GLINT_DYN_CTL] + (idx - 1));
+}
+
+/**
+ * icrdma_disable_irq - Disable interrupt
+ * @dev: pointer to the device structure
+ * @idx: vector index
+ */
+static void icrdma_disable_irq(struct irdma_sc_dev *dev, u32 idx)
+{
+	if (dev->hw_attrs.uk_attrs.hw_rev != IRDMA_GEN_1)
+		writel(0, dev->hw_regs[IRDMA_GLINT_DYN_CTL] + idx);
+	else
+		writel(0, dev->hw_regs[IRDMA_GLINT_DYN_CTL] + (idx - 1));
+}
+
+/**
+ * icrdma_cfg_ceq- Configure CEQ interrupt
+ * @dev: pointer to the device structure
+ * @ceq_id: Completion Event Queue ID
+ * @idx: vector index
+ * @enable: True to enable, False disables
+ */
+static void icrdma_cfg_ceq(struct irdma_sc_dev *dev, u32 ceq_id, u32 idx,
+			   bool enable)
+{
+	u32 reg_val;
+
+	reg_val = FIELD_PREP(IRDMA_GLINT_CEQCTL_CAUSE_ENA, enable) |
+		  FIELD_PREP(IRDMA_GLINT_CEQCTL_MSIX_INDX, idx) |
+		  FIELD_PREP(IRDMA_GLINT_CEQCTL_ITR_INDX, 3);
+
+	writel(reg_val, dev->hw_regs[IRDMA_GLINT_CEQCTL] + ceq_id);
+}
+
+static const struct irdma_irq_ops icrdma_irq_ops = {
+	.irdma_cfg_aeq = irdma_cfg_aeq,
+	.irdma_cfg_ceq = icrdma_cfg_ceq,
+	.irdma_dis_irq = icrdma_disable_irq,
+	.irdma_en_irq = icrdma_ena_irq,
+};
+
+void icrdma_init_hw(struct irdma_sc_dev *dev)
+{
+	int i;
+	u8 __iomem *hw_addr;
+
+	for (i = 0; i < IRDMA_MAX_REGS; ++i) {
+		hw_addr = dev->hw->hw_addr;
+
+		if (i == IRDMA_DB_ADDR_OFFSET)
+			hw_addr = NULL;
+
+		dev->hw_regs[i] = (u32 __iomem *)(hw_addr + icrdma_regs[i]);
+	}
+	dev->hw_attrs.max_hw_vf_fpm_id = IRDMA_MAX_VF_FPM_ID;
+	dev->hw_attrs.first_hw_vf_fpm_id = IRDMA_FIRST_VF_FPM_ID;
+
+	for (i = 0; i < IRDMA_MAX_SHIFTS; ++i)
+		dev->hw_shifts[i] = icrdma_shifts[i];
+
+	for (i = 0; i < IRDMA_MAX_MASKS; ++i)
+		dev->hw_masks[i] = icrdma_masks[i];
+
+	dev->wqe_alloc_db = dev->hw_regs[IRDMA_WQEALLOC];
+	dev->cq_arm_db = dev->hw_regs[IRDMA_CQARM];
+	dev->aeq_alloc_db = dev->hw_regs[IRDMA_AEQALLOC];
+	dev->cqp_db = dev->hw_regs[IRDMA_CQPDB];
+	dev->cq_ack_db = dev->hw_regs[IRDMA_CQACK];
+	dev->irq_ops = &icrdma_irq_ops;
+	dev->hw_attrs.max_hw_ird = ICRDMA_MAX_IRD_SIZE;
+	dev->hw_attrs.max_hw_ord = ICRDMA_MAX_ORD_SIZE;
+	dev->hw_attrs.max_stat_inst = ICRDMA_MAX_STATS_COUNT;
+
+	dev->hw_attrs.uk_attrs.max_hw_sq_chunk = IRDMA_MAX_QUANTA_PER_WR;
+	dev->hw_attrs.uk_attrs.feature_flags |= IRDMA_FEATURE_RTS_AE |
+						IRDMA_FEATURE_CQ_RESIZE;
+}