[PATCH] soc: octeontx2-dpi: Add DPI DMA PF driver
Radha Mohan Chintakuntla
radhac at marvell.com
Wed Feb 9 14:50:10 PST 2022
DPI DMA block in the Octeon TX2 SoC provides support for DMA between
memory to memory transfers and also transfers between a host and Octeon
Tx2 when it is in PCIe endpoint mode.
Signed-off-by: Radha Mohan Chintakuntla <radhac at marvell.com>
---
MAINTAINERS | 7 +
drivers/soc/marvell/Kconfig | 10 +
drivers/soc/marvell/Makefile | 1 +
drivers/soc/marvell/octeontx2-dpi/Makefile | 8 +
drivers/soc/marvell/octeontx2-dpi/dpi.c | 563 +++++++++++++++++++++
drivers/soc/marvell/octeontx2-dpi/dpi.h | 335 ++++++++++++
6 files changed, 924 insertions(+)
create mode 100644 drivers/soc/marvell/octeontx2-dpi/Makefile
create mode 100644 drivers/soc/marvell/octeontx2-dpi/dpi.c
create mode 100644 drivers/soc/marvell/octeontx2-dpi/dpi.h
diff --git a/MAINTAINERS b/MAINTAINERS
index fb48e0317d34..f39f64f0bc1c 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11463,6 +11463,13 @@ S: Maintained
F: drivers/crypto/marvell/
F: include/linux/soc/marvell/octeontx2/
+MARVELL OCTEONTX2 DPI DMA PHYISCAL FUNCTION DRIVER
+M: Radha Mohan Chintakuntla <radhac at marvell.com>
+M: Veerasenareddy Burry <vburru at marvell.com>
+L: linux-arm-kernel at lists.infradead.org
+S: Supported
+F: drivers/soc/marvell/octeontx2-dpi/
+
MARVELL GIGABIT ETHERNET DRIVERS (skge/sky2)
M: Mirko Lindner <mlindner at marvell.com>
M: Stephen Hemminger <stephen at networkplumber.org>
diff --git a/drivers/soc/marvell/Kconfig b/drivers/soc/marvell/Kconfig
index 4e8f8a60b3df..6e185e98a02c 100644
--- a/drivers/soc/marvell/Kconfig
+++ b/drivers/soc/marvell/Kconfig
@@ -4,6 +4,16 @@
menu "Marvell SoC drivers"
+config OCTEONTX2_DPI_PF
+ tristate "OcteonTX2 DPI-DMA PF driver"
+ depends on ARM64 && PCI
+ default m
+ help
+ Select this option to enable DPI PF driver support.
+ DPI (DMA packet interface) provides DMA support for MAC.
+ This driver intializes DPI PF device and enables VFs for supporting
+ different types of DMA transfers.
+
config OCTEONTX2_SDP_PF
tristate "OcteonTX2 SDP PF driver"
depends on ARM64 && PCI && OCTEONTX2_AF && OCTEONTX2_MBOX
diff --git a/drivers/soc/marvell/Makefile b/drivers/soc/marvell/Makefile
index 9a9a4435d64d..a1835a44a22c 100644
--- a/drivers/soc/marvell/Makefile
+++ b/drivers/soc/marvell/Makefile
@@ -1,2 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
+obj-y += octeontx2-dpi/
obj-y += octeontx2-sdp/
diff --git a/drivers/soc/marvell/octeontx2-dpi/Makefile b/drivers/soc/marvell/octeontx2-dpi/Makefile
new file mode 100644
index 000000000000..73640517593c
--- /dev/null
+++ b/drivers/soc/marvell/octeontx2-dpi/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for Marvell's OcteonTX2 DPI PF driver
+#
+
+obj-$(CONFIG_OCTEONTX2_DPI_PF) += octeontx2_dpi.o
+
+octeontx2_dpi-y := dpi.o
diff --git a/drivers/soc/marvell/octeontx2-dpi/dpi.c b/drivers/soc/marvell/octeontx2-dpi/dpi.c
new file mode 100644
index 000000000000..9dd7167e930c
--- /dev/null
+++ b/drivers/soc/marvell/octeontx2-dpi/dpi.c
@@ -0,0 +1,563 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell OcteonTx2 DPI PF driver
+ *
+ * Copyright (C) 2022 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
+#include <linux/sysfs.h>
+
+#include "dpi.h"
+
+#define DPI_DRV_NAME "octeontx2-dpi"
+#define DPI_DRV_STRING "Marvell OcteonTX2 DPI-DMA Driver"
+#define DPI_DRV_VERSION "1.0"
+
+static int mps = 128;
+module_param(mps, int, 0644);
+MODULE_PARM_DESC(mps, "Maximum payload size, Supported sizes are 128, 256, 512 and 1024 bytes");
+
+static int mrrs = 128;
+module_param(mrrs, int, 0644);
+MODULE_PARM_DESC(mrrs, "Maximum read request size, Supported sizes are 128, 256, 512 and 1024 bytes");
+
+static inline bool is_otx3_dpi(struct dpipf *dpi)
+{
+ if (dpi->pdev->subsystem_device >= PCI_SUBDEVID_OCTEONTX3_DPI_PF)
+ return 1;
+
+ return 0;
+}
+
+static void dpi_reg_write(struct dpipf *dpi, u64 offset, u64 val)
+{
+ writeq(val, dpi->reg_base + offset);
+}
+
+static u64 dpi_reg_read(struct dpipf *dpi, u64 offset)
+{
+ return readq(dpi->reg_base + offset);
+}
+
+static int dpi_dma_engine_get_num(void)
+{
+ return DPI_MAX_ENGINES;
+}
+
+static int dpi_queue_init(struct dpipf *dpi, struct dpipf_vf *dpivf, u8 vf)
+{
+ int engine = 0;
+ int queue = vf;
+ u64 reg = 0ULL;
+ u32 aura = dpivf->vf_config.aura;
+ u16 buf_size = dpivf->vf_config.csize;
+ u16 sso_pf_func = dpivf->vf_config.sso_pf_func;
+ u16 npa_pf_func = dpivf->vf_config.npa_pf_func;
+
+ reg = DPI_DMA_IBUFF_CSIZE_CSIZE((u64)(buf_size / 8));
+ if (is_otx3_dpi(dpi))
+ reg |= DPI_DMA_IBUFF_CSIZE_NPA_FREE;
+ dpi_reg_write(dpi, DPI_DMAX_IBUFF_CSIZE(queue), reg);
+
+ if (!is_otx3_dpi(dpi)) {
+ /* IDs are already configured while creating the domains.
+ * No need to configure here.
+ */
+ for (engine = 0; engine < dpi_dma_engine_get_num(); engine++) {
+ /* Don't configure the queues for PKT engines */
+ if (engine >= 4)
+ break;
+
+ reg = 0;
+ reg = dpi_reg_read(dpi, DPI_DMA_ENGX_EN(engine));
+ reg |= DPI_DMA_ENG_EN_QEN(0x1 << queue);
+ dpi_reg_write(dpi, DPI_DMA_ENGX_EN(engine), reg);
+ }
+ }
+
+ reg = dpi_reg_read(dpi, DPI_DMAX_IDS2(queue));
+ reg |= DPI_DMA_IDS2_INST_AURA(aura);
+ dpi_reg_write(dpi, DPI_DMAX_IDS2(queue), reg);
+
+ reg = dpi_reg_read(dpi, DPI_DMAX_IDS(queue));
+ reg |= DPI_DMA_IDS_DMA_NPA_PF_FUNC(npa_pf_func);
+ reg |= DPI_DMA_IDS_DMA_SSO_PF_FUNC(sso_pf_func);
+ reg |= DPI_DMA_IDS_DMA_STRM(vf + 1);
+ reg |= DPI_DMA_IDS_INST_STRM(vf + 1);
+ dpi_reg_write(dpi, DPI_DMAX_IDS(queue), reg);
+
+ return 0;
+}
+
+static int dpi_queue_fini(struct dpipf *dpi, struct dpipf_vf *dpivf, u8 vf)
+{
+ u64 reg = 0ULL;
+ int engine = 0;
+ int queue = vf;
+ u16 buf_size = dpivf->vf_config.csize;
+
+ for (engine = 0; engine < dpi_dma_engine_get_num(); engine++) {
+ /* Don't configure the queues for PKT engines */
+ if (engine >= 4)
+ break;
+
+ reg = 0;
+ reg = dpi_reg_read(dpi, DPI_DMA_ENGX_EN(engine));
+ reg &= DPI_DMA_ENG_EN_QEN((~(1 << queue)));
+ dpi_reg_write(dpi, DPI_DMA_ENGX_EN(engine), reg);
+ }
+
+ dpi_reg_write(dpi, DPI_DMAX_QRST(queue), 0x1ULL);
+ /* TBD: below code required ? */
+ dpi_reg_write(dpi, DPI_DMAX_IBUFF_CSIZE(queue),
+ DPI_DMA_IBUFF_CSIZE_CSIZE((u64)(buf_size)));
+
+ /* Reset IDS and IDS2 registers */
+ dpi_reg_write(dpi, DPI_DMAX_IDS2(queue), 0ULL);
+ dpi_reg_write(dpi, DPI_DMAX_IDS(queue), 0ULL);
+
+ return 0;
+}
+
+/**
+ * Global initialization of DPI
+ *
+ * @dpi: DPI device context structure
+ * @return Zero on success, negative on failure
+ */
+static int dpi_init(struct dpipf *dpi)
+{
+ int engine = 0, port = 0;
+ u8 mrrs_val, mps_val;
+ u64 reg = 0ULL;
+
+ for (engine = 0; engine < dpi_dma_engine_get_num(); engine++) {
+ if (engine == 4 || engine == 5)
+ reg = DPI_ENG_BUF_BLKS(16);
+ else
+ reg = DPI_ENG_BUF_BLKS(8);
+
+ dpi_reg_write(dpi, DPI_ENGX_BUF(engine), reg);
+
+ /* Here qmap for the engines are set to 0.
+ * No dpi queues are mapped to engines.
+ * When a VF is initialised corresponding bit
+ * in the qmap will be set for all engines.
+ */
+ if (!is_otx3_dpi(dpi))
+ dpi_reg_write(dpi, DPI_DMA_ENGX_EN(engine), 0x0ULL);
+ }
+
+ reg = 0ULL;
+ reg = (DPI_DMA_CONTROL_ZBWCSEN | DPI_DMA_CONTROL_PKT_EN |
+ DPI_DMA_CONTROL_LDWB | DPI_DMA_CONTROL_O_MODE);
+
+ if (is_otx3_dpi(dpi))
+ reg |= DPI_DMA_CONTROL_DMA_ENB(0x3fULL);
+ else
+ reg |= DPI_DMA_CONTROL_DMA_ENB(0xfULL);
+
+ dpi_reg_write(dpi, DPI_DMA_CONTROL, reg);
+ dpi_reg_write(dpi, DPI_CTL, DPI_CTL_EN);
+
+ /* Configure MPS and MRRS for DPI */
+ if (mrrs < DPI_EBUS_MRRS_MIN || mrrs > DPI_EBUS_MRRS_MAX ||
+ !is_power_of_2(mrrs)) {
+ dev_info(&dpi->pdev->dev,
+ "Invalid MRRS size:%d, Using default size(128 bytes)\n"
+ , mrrs);
+ mrrs = 128;
+ }
+ mrrs_val = fls(mrrs) - 8;
+
+ if (mps < DPI_EBUS_MPS_MIN || mps > DPI_EBUS_MPS_MAX
+ || !is_power_of_2(mps)) {
+ dev_info(&dpi->pdev->dev,
+ "Invalid MPS size:%d, Using default size(128 bytes)\n"
+ , mps);
+ mps = 128;
+ }
+ mps_val = fls(mps) - 8;
+
+ for (port = 0; port < DPI_EBUS_MAX_PORTS; port++) {
+ reg = dpi_reg_read(dpi, DPI_EBUS_PORTX_CFG(port));
+ reg &= ~(DPI_EBUS_PORTX_CFG_MRRS(0x7) |
+ DPI_EBUS_PORTX_CFG_MPS(0x7));
+ reg |= (DPI_EBUS_PORTX_CFG_MPS(mps_val) |
+ DPI_EBUS_PORTX_CFG_MRRS(mrrs_val));
+ dpi_reg_write(dpi, DPI_EBUS_PORTX_CFG(port), reg);
+ }
+
+ /* Set the write control FIFO threshold as per HW recommendation */
+ if (is_otx3_dpi(dpi))
+ dpi_reg_write(dpi, DPI_WCTL_FIF_THR, 0x30);
+
+ return 0;
+}
+
+static int dpi_fini(struct dpipf *dpi)
+{
+ int engine = 0, port;
+ u64 reg = 0ULL;
+
+ for (engine = 0; engine < dpi_dma_engine_get_num(); engine++) {
+
+ dpi_reg_write(dpi, DPI_ENGX_BUF(engine), reg);
+ if (!is_otx3_dpi(dpi))
+ dpi_reg_write(dpi, DPI_DMA_ENGX_EN(engine), 0x0ULL);
+ }
+
+ reg = 0ULL;
+ dpi_reg_write(dpi, DPI_DMA_CONTROL, reg);
+ dpi_reg_write(dpi, DPI_CTL, ~DPI_CTL_EN);
+
+ for (port = 0; port < DPI_EBUS_MAX_PORTS; port++) {
+ reg = dpi_reg_read(dpi, DPI_EBUS_PORTX_CFG(port));
+ reg &= ~DPI_EBUS_PORTX_CFG_MRRS(0x7);
+ reg &= ~DPI_EBUS_PORTX_CFG_MPS(0x7);
+ dpi_reg_write(dpi, DPI_EBUS_PORTX_CFG(port), reg);
+ }
+ return 0;
+}
+
+static int dpi_queue_reset(struct dpipf *dpi, u16 queue)
+{
+ /* Nothing to do yet */
+ return 0;
+}
+
+static irqreturn_t dpi_pf_intr_handler (int irq, void *dpi_irq)
+{
+ u64 reg_val = 0;
+ int i = 0;
+ struct dpipf *dpi = (struct dpipf *)dpi_irq;
+
+ dev_err(&dpi->pdev->dev, "intr received: %d\n", irq);
+
+ /* extract MSIX vector number from irq number. */
+ while (irq != pci_irq_vector(dpi->pdev, i)) {
+ i++;
+ if (i > dpi->num_vec)
+ break;
+ }
+ if (i < DPI_REQQX_INT_IDX) {
+ reg_val = dpi_reg_read(dpi, DPI_DMA_CCX_INT(i));
+ dev_err(&dpi->pdev->dev, "DPI_CC%d_INT raised: 0x%016llx\n",
+ i, reg_val);
+ dpi_reg_write(dpi, DPI_DMA_CCX_INT(i), 0x1ULL);
+ } else if (i < DPI_SDP_FLR_RING_LINTX_IDX) {
+ reg_val = dpi_reg_read(
+ dpi, DPI_REQQX_INT(i - DPI_REQQX_INT_IDX));
+ dev_err(&dpi->pdev->dev,
+ "DPI_REQQ_INT raised for q:%d: 0x%016llx\n",
+ (i - 0x40), reg_val);
+
+ dpi_reg_write(
+ dpi, DPI_REQQX_INT(i - DPI_REQQX_INT_IDX), reg_val);
+
+ if (reg_val & (0x71ULL))
+ dpi_queue_reset(dpi, (i - DPI_REQQX_INT_IDX));
+ } else if (i < DPI_SDP_IRE_LINTX_IDX) {
+ /* TODO: handle interrupt */
+ dev_err(&dpi->pdev->dev, "DPI_SDP_FLR_RING_LINTX raised\n");
+
+ } else if (i < DPI_SDP_ORE_LINTX_IDX) {
+ /* TODO: handle interrupt */
+ dev_err(&dpi->pdev->dev, "DPI_SDP_IRE_LINTX raised\n");
+
+ } else if (i < DPI_SDP_ORD_LINTX_IDX) {
+ /* TODO: handle interrupt */
+ dev_err(&dpi->pdev->dev, "DPI_SDP_ORE_LINTX raised\n");
+
+ } else if (i < DPI_EPFX_PP_VF_LINTX_IDX) {
+ /* TODO: handle interrupt */
+ dev_err(&dpi->pdev->dev, "DPI_SDP_ORD_LINTX raised\n");
+
+ } else if (i < DPI_EPFX_DMA_VF_LINTX_IDX) {
+ /* TODO: handle interrupt */
+ dev_err(&dpi->pdev->dev, "DPI_EPFX_PP_VF_LINTX raised\n");
+
+ } else if (i < DPI_EPFX_MISC_LINTX_IDX) {
+ /* TODO: handle interrupt */
+ dev_err(&dpi->pdev->dev, "DPI_EPFX_DMA_VF_LINTX raised\n");
+
+ } else if (i < DPI_PF_RAS_IDX) {
+ /* TODO: handle interrupt */
+ dev_err(&dpi->pdev->dev, "DPI_EPFX_MISC_LINTX raised\n");
+
+ } else if (i == DPI_PF_RAS_IDX) {
+ reg_val = dpi_reg_read(dpi, DPI_PF_RAS);
+ dev_err(&dpi->pdev->dev, "DPI_PF_RAS raised: 0x%016llx\n",
+ reg_val);
+ dpi_reg_write(dpi, DPI_PF_RAS, reg_val);
+ }
+ return IRQ_HANDLED;
+}
+
+static int dpi_irq_init(struct dpipf *dpi)
+{
+ int i, irq = 0;
+ int ret = 0;
+
+ /* Clear All Interrupts */
+ dpi_reg_write(dpi, DPI_PF_RAS, DPI_PF_RAS_INT);
+
+ /* Clear All Enables */
+ dpi_reg_write(dpi, DPI_PF_RAS_ENA_W1C, DPI_PF_RAS_INT);
+
+ for (i = 0; i < DPI_MAX_REQQ_INT; i++) {
+ dpi_reg_write(dpi, DPI_REQQX_INT(i), DPI_REQQ_INT);
+ dpi_reg_write(dpi, DPI_REQQX_INT_ENA_W1C(i), DPI_REQQ_INT);
+ }
+
+ for (i = 0; i < DPI_MAX_CC_INT; i++) {
+ dpi_reg_write(dpi, DPI_DMA_CCX_INT(i), DPI_DMA_CC_INT);
+ dpi_reg_write(dpi, DPI_DMA_CCX_INT_ENA_W1C(i), DPI_DMA_CC_INT);
+ }
+
+ dpi->num_vec = pci_msix_vec_count(dpi->pdev);
+ /* Enable MSI-X */
+ ret = pci_alloc_irq_vectors(dpi->pdev, dpi->num_vec,
+ dpi->num_vec, PCI_IRQ_MSIX);
+ if (ret < 0) {
+ dev_err(&dpi->pdev->dev,
+ "DPIPF: Request for %d msix vectors failed, ret %d\n",
+ dpi->num_vec, ret);
+ goto alloc_fail;
+ }
+
+ for (irq = 0; irq < dpi->num_vec; irq++) {
+ ret = request_irq(pci_irq_vector(dpi->pdev, irq),
+ dpi_pf_intr_handler, 0, "DPIPF", dpi);
+ if (ret) {
+ dev_err(&dpi->pdev->dev,
+ "DPIPF: IRQ(%d) registration failed for DPIPF\n",
+ irq);
+ goto fail;
+ }
+ }
+
+#define ENABLE_DPI_INTERRUPTS 0
+#if ENABLE_DPI_INTERRUPTS
+ /*Enable All Interrupts */
+ for (i = 0; i < DPI_MAX_REQQ_INT; i++)
+ dpi_reg_write(dpi, DPI_REQQX_INT_ENA_W1S(i), DPI_REQQ_INT);
+
+ dpi_reg_write(dpi, DPI_PF_RAS_ENA_W1S, DPI_PF_RAS_INT);
+#endif
+ return 0;
+fail:
+ if (irq) {
+ for (i = 0; i <= irq; i++)
+ free_irq(pci_irq_vector(dpi->pdev, i), dpi);
+ }
+ pci_free_irq_vectors(dpi->pdev);
+alloc_fail:
+ dpi->num_vec = 0;
+ return ret;
+}
+
+static void dpi_irq_free(struct dpipf *dpi)
+{
+ int i = 0;
+
+ /* Clear All Enables */
+ dpi_reg_write(dpi, DPI_PF_RAS_ENA_W1C, DPI_PF_RAS_INT);
+
+ for (i = 0; i < DPI_MAX_REQQ_INT; i++) {
+ dpi_reg_write(dpi, DPI_REQQX_INT(i), DPI_REQQ_INT);
+ dpi_reg_write(dpi, DPI_REQQX_INT_ENA_W1C(i), DPI_REQQ_INT);
+ }
+
+ for (i = 0; i < DPI_MAX_CC_INT; i++) {
+ dpi_reg_write(dpi, DPI_DMA_CCX_INT(i), DPI_DMA_CC_INT);
+ dpi_reg_write(dpi, DPI_DMA_CCX_INT_ENA_W1C(i), DPI_DMA_CC_INT);
+ }
+
+ for (i = 0; i < dpi->num_vec; i++)
+ free_irq(pci_irq_vector(dpi->pdev, i), dpi);
+
+ pci_free_irq_vectors(dpi->pdev);
+ dpi->num_vec = 0;
+}
+
+static int dpi_sriov_configure(struct pci_dev *pdev, int numvfs)
+{
+ struct dpipf *dpi = pci_get_drvdata(pdev);
+ int ret = 0;
+
+ if (numvfs == 0) {
+ pci_disable_sriov(pdev);
+ dpi->total_vfs = 0;
+ } else {
+ ret = pci_enable_sriov(pdev, numvfs);
+ if (ret == 0) {
+ dpi->total_vfs = numvfs;
+ ret = numvfs;
+ }
+ }
+
+ return ret;
+}
+
+static int queue_config(struct dpipf *dpi, struct dpipf_vf *dpivf,
+ union dpi_mbox_message_t *msg)
+{
+ switch (msg->s.cmd) {
+ case DPI_QUEUE_OPEN:
+ dpivf->vf_config.aura = msg->s.aura;
+ dpivf->vf_config.csize = msg->s.csize;
+ dpivf->vf_config.sso_pf_func = msg->s.sso_pf_func;
+ dpivf->vf_config.npa_pf_func = msg->s.npa_pf_func;
+ dpi_queue_init(dpi, dpivf, msg->s.vfid);
+ dpivf->setup_done = true;
+ break;
+ case DPI_QUEUE_CLOSE:
+ dpivf->vf_config.aura = 0;
+ dpivf->vf_config.csize = 0;
+ dpivf->vf_config.sso_pf_func = 0;
+ dpivf->vf_config.npa_pf_func = 0;
+ dpi_queue_fini(dpi, dpivf, msg->s.vfid);
+ dpivf->setup_done = false;
+ break;
+ default:
+ return -1;
+ }
+ return 0;
+}
+
+static int dpi_queue_config(struct pci_dev *pfdev,
+ union dpi_mbox_message_t *msg)
+{
+ struct device *dev = &pfdev->dev;
+ struct dpipf *dpi = pci_get_drvdata(pfdev);
+ struct dpipf_vf *dpivf;
+
+ if (msg->s.vfid > dpi->total_vfs) {
+ dev_err(dev, "Invalid vfid:%d\n", msg->s.vfid);
+ return -1;
+ }
+ dpivf = &dpi->vf[msg->s.vfid];
+
+ return queue_config(dpi, dpivf, msg);
+}
+static int dpi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct device *dev = &pdev->dev;
+ struct dpipf *dpi;
+ int err;
+
+ dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
+ if (!dpi)
+ return -ENOMEM;
+ dpi->pdev = pdev;
+
+ pci_set_drvdata(pdev, dpi);
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(dev, "Failed to enable PCI device\n");
+ pci_set_drvdata(pdev, NULL);
+ return err;
+ }
+
+ err = pci_request_regions(pdev, DPI_DRV_NAME);
+ if (err) {
+ dev_err(dev, "PCI request regions failed 0x%x\n", err);
+ goto err_disable_device;
+ }
+
+ /* MAP configuration registers */
+ dpi->reg_base = pcim_iomap(pdev, PCI_DPI_PF_CFG_BAR, 0);
+ if (!dpi->reg_base) {
+ dev_err(dev, "DPI: Cannot map CSR memory space, aborting\n");
+ err = -ENOMEM;
+ goto err_release_regions;
+ }
+
+ /* Initialize global PF registers */
+ err = dpi_init(dpi);
+ if (err) {
+ dev_err(dev, "DPI: Failed to initialize dpi\n");
+ goto err_release_regions;
+ }
+
+ /* Register interrupts */
+ err = dpi_irq_init(dpi);
+ if (err) {
+ dev_err(dev, "DPI: Failed to initialize irq vectors\n");
+ goto err_dpi_fini;
+ }
+
+ return 0;
+
+err_dpi_fini:
+ dpi_fini(dpi);
+err_release_regions:
+ pci_release_regions(pdev);
+err_disable_device:
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ devm_kfree(dev, dpi);
+ return err;
+}
+
+static void dpi_remove(struct pci_dev *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct dpipf *dpi = pci_get_drvdata(pdev);
+
+ dpi_irq_free(dpi);
+ dpi_fini(dpi);
+ dpi_sriov_configure(pdev, 0);
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+ devm_kfree(dev, dpi);
+}
+
+struct otx2_dpipf_com_s otx2_dpipf_com = {
+ .queue_config = dpi_queue_config
+};
+EXPORT_SYMBOL(otx2_dpipf_com);
+
+static const struct pci_device_id dpi_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_DPI_PF) },
+ { 0, } /* end of table */
+};
+
+static struct pci_driver dpi_driver = {
+ .name = DPI_DRV_NAME,
+ .id_table = dpi_id_table,
+ .probe = dpi_probe,
+ .remove = dpi_remove,
+ .sriov_configure = dpi_sriov_configure,
+};
+
+static int __init dpi_init_module(void)
+{
+ pr_info("%s: %s\n", DPI_DRV_NAME, DPI_DRV_STRING);
+
+ return pci_register_driver(&dpi_driver);
+}
+
+static void __exit dpi_cleanup_module(void)
+{
+ pci_unregister_driver(&dpi_driver);
+}
+
+module_init(dpi_init_module);
+module_exit(dpi_cleanup_module);
+MODULE_DEVICE_TABLE(pci, dpi_id_table);
+MODULE_AUTHOR("Marvell International Ltd.");
+MODULE_DESCRIPTION(DPI_DRV_STRING);
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DPI_DRV_VERSION);
+
diff --git a/drivers/soc/marvell/octeontx2-dpi/dpi.h b/drivers/soc/marvell/octeontx2-dpi/dpi.h
new file mode 100644
index 000000000000..89aeba02ecaa
--- /dev/null
+++ b/drivers/soc/marvell/octeontx2-dpi/dpi.h
@@ -0,0 +1,335 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell OcteonTx2 DPI PF driver
+ *
+ * Copyright (C) 2018 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __DPI_H__
+#define __DPI_H__
+
+ /* PCI device IDs */
+#define PCI_DEVID_OCTEONTX2_DPI_PF 0xA080
+#define PCI_DEVID_OCTEONTX2_DPI_VF 0xA081
+#define PCI_SUBDEVID_OCTEONTX3_DPI_PF 0xB900
+
+/* PCI BAR nos */
+#define PCI_DPI_PF_CFG_BAR 0
+#define PCI_DPI_PF_MSIX_BAR 4
+#define PCI_DPI_VF_CFG_BAR 0
+#define PCI_DPI_VF_MSIX_BAR 4
+#define DPI_VF_CFG_SIZE 0x100000
+#define DPI_VF_OFFSET(x) (0x20000000 | 0x100000 * (x))
+
+/* MSI-X interrupts */
+#define DPI_MAX_REQQ_INT ({ \
+ u32 val; \
+ val = 8; \
+ if (is_otx3_dpi(dpi)) \
+ val = 32; \
+ val; }) \
+
+#define DPI_MAX_CC_INT 64
+
+/* MSI-X interrupt vectors indexes */
+#define DPI_CCX_INT_IDX 0x0
+#define DPI_REQQX_INT_IDX 0x40
+#define DPI_SDP_FLR_RING_LINTX_IDX 0x48
+#define DPI_SDP_IRE_LINTX_IDX 0x4C
+#define DPI_SDP_ORE_LINTX_IDX 0x50
+#define DPI_SDP_ORD_LINTX_IDX 0x54
+#define DPI_EPFX_PP_VF_LINTX_IDX 0x58
+#define DPI_EPFX_DMA_VF_LINTX_IDX 0x78
+#define DPI_EPFX_MISC_LINTX_IDX 0x98
+#define DPI_PF_RAS_IDX 0xA8
+
+#define DPI_MAX_ENGINES 6
+#define DPI_MAX_VFS 32
+
+/**************** Macros for register modification ************/
+#define DPI_DMA_IBUFF_CSIZE_CSIZE(x) ((x) & 0x1fff)
+#define DPI_DMA_IBUFF_CSIZE_GET_CSIZE(x) ((x) & 0x1fff)
+
+#define DPI_DMA_IBUFF_CSIZE_NPA_FREE (1 << 16)
+
+#define DPI_DMA_IDS_INST_STRM(x) ((uint64_t)((x) & 0xff) << 40)
+#define DPI_DMA_IDS_GET_INST_STRM(x) (((x) >> 40) & 0xff)
+
+#define DPI_DMA_IDS_DMA_STRM(x) ((uint64_t)((x) & 0xff) << 32)
+#define DPI_DMA_IDS_GET_DMA_STRM(x) (((x) >> 32) & 0xff)
+
+#define DPI_DMA_IDS_DMA_NPA_PF_FUNC(x) ((uint64_t)((x) & 0xffff) << 16)
+#define DPI_DMA_IDS_GET_DMA_NPA_PF_FUNC(x) (((x) >> 16) & 0xffff)
+
+#define DPI_DMA_IDS_DMA_SSO_PF_FUNC(x) ((uint64_t)((x) & 0xffff))
+#define DPI_DMA_IDS_GET_DMA_SSO_PF_FUNC(x) ((x) & 0xffff)
+
+#define DPI_DMA_IDS2_INST_AURA(x) ((uint64_t)((x) & 0xfffff))
+#define DPI_DMA_IDS2_GET_INST_AURA(x) ((x) & 0xfffff)
+
+#define DPI_ENG_BUF_BLKS(x) ((x) & 0x1fULL)
+#define DPI_ENG_BUF_GET_BLKS(x) ((x) & 0x1fULL)
+
+#define DPI_ENG_BUF_BASE(x) (((x) & 0x3fULL) << 16)
+#define DPI_ENG_BUF_GET_BASE(x) (((x) >> 16) & 0x3fULL)
+
+#define DPI_DMA_ENG_EN_QEN(x) ((x) & 0xffULL)
+#define DPI_DMA_ENG_EN_GET_QEN(x) ((x) & 0xffULL)
+
+#define DPI_DMA_ENG_EN_MOLR(x) (((x) & 0x3ffULL) << 32)
+#define DPI_DMA_ENG_EN_GET_MOLR(x) (((x) >> 32) & 0x3ffULL)
+
+#define DPI_DMA_CONTROL_DMA_ENB(x) (((x) & 0x3fULL) << 48)
+#define DPI_DMA_CONTROL_GET_DMA_ENB(x) (((x) >> 48) & 0x3fULL)
+
+#define DPI_DMA_CONTROL_O_ES(x) (((x) & 0x3ULL) << 15)
+#define DPI_DMA_CONTROL_GET_O_ES(x) (((x) >> 15) & 0x3ULL)
+
+#define DPI_DMA_CONTROL_O_MODE (0x1ULL << 14)
+#define DPI_DMA_CONTROL_O_NS (0x1ULL << 17)
+#define DPI_DMA_CONTROL_O_RO (0x1ULL << 18)
+#define DPI_DMA_CONTROL_O_ADD1 (0x1ULL << 19)
+#define DPI_DMA_CONTROL_LDWB (0x1ULL << 32)
+#define DPI_DMA_CONTROL_NCB_TAG_DIS (0x1ULL << 34)
+#define DPI_DMA_CONTROL_ZBWCSEN (0x1ULL << 39)
+#define DPI_DMA_CONTROL_WQECSDIS (0x1ULL << 47)
+#define DPI_DMA_CONTROL_UIO_DIS (0x1ULL << 55)
+#define DPI_DMA_CONTROL_PKT_EN (0x1ULL << 56)
+#define DPI_DMA_CONTROL_FFP_DIS (0x1ULL << 59)
+
+#define DPI_CTL_EN (0x1ULL)
+
+/******************** macros for Interrupts ************************/
+#define DPI_DMA_CC_INT (0x1ULL)
+
+#define DPI_REQQ_INT_INSTRFLT (0x1ULL)
+#define DPI_REQQ_INT_RDFLT (0x1ULL << 1)
+#define DPI_REQQ_INT_WRFLT (0x1ULL << 2)
+#define DPI_REQQ_INT_CSFLT (0x1ULL << 3)
+#define DPI_REQQ_INT_INST_DBO (0x1ULL << 4)
+#define DPI_REQQ_INT_INST_ADDR_NULL (0x1ULL << 5)
+#define DPI_REQQ_INT_INST_FILL_INVAL (0x1ULL << 6)
+#define DPI_REQQ_INT_INSTR_PSN (0x1ULL << 7)
+
+#define DPI_REQQ_INT \
+ (DPI_REQQ_INT_INSTRFLT | \
+ DPI_REQQ_INT_RDFLT | \
+ DPI_REQQ_INT_WRFLT | \
+ DPI_REQQ_INT_CSFLT | \
+ DPI_REQQ_INT_INST_DBO | \
+ DPI_REQQ_INT_INST_ADDR_NULL | \
+ DPI_REQQ_INT_INST_FILL_INVAL | \
+ DPI_REQQ_INT_INSTR_PSN)
+
+#define DPI_PF_RAS_EBI_DAT_PSN (0x1ULL)
+#define DPI_PF_RAS_NCB_DAT_PSN (0x1ULL << 1)
+#define DPI_PF_RAS_NCB_CMD_PSN (0x1ULL << 2)
+#define DPI_PF_RAS_INT \
+ (DPI_PF_RAS_EBI_DAT_PSN | \
+ DPI_PF_RAS_NCB_DAT_PSN | \
+ DPI_PF_RAS_NCB_CMD_PSN)
+
+
+/***************** Registers ******************/
+#define DPI_DMAX_IBUFF_CSIZE(x) (0x0ULL | ((x) << 11))
+#define DPI_DMAX_REQBANK0(x) (0x8ULL | ((x) << 11))
+#define DPI_DMAX_REQBANK1(x) (0x10ULL | ((x) << 11))
+#define DPI_DMAX_IDS(x) (0x18ULL | ((x) << 11))
+#define DPI_DMAX_IDS2(x) (0x20ULL | ((x) << 11))
+#define DPI_DMAX_IFLIGHT(x) (0x28ULL | ((x) << 11))
+#define DPI_DMAX_QRST(x) (0x30ULL | ((x) << 11))
+#define DPI_DMAX_ERR_RSP_STATUS(x) (0x38ULL | ((x) << 11))
+
+#define DPI_CSCLK_ACTIVE_PC ({ \
+ u64 offset; \
+ \
+ offset = (0x4000ULL); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x10000ULL); \
+ offset; }) \
+
+#define DPI_CTL ({ \
+ u64 offset; \
+ \
+ offset = (0x4010ULL); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x10010ULL); \
+ offset; }) \
+
+#define DPI_DMA_CONTROL ({ \
+ u64 offset; \
+ \
+ offset = (0x4018ULL); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x10018ULL); \
+ offset; }) \
+
+#define DPI_DMA_ENGX_EN(x) ({ \
+ u64 offset; \
+ \
+ offset = (0x4040ULL | (x) << 3); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x10040ULL | ((x) << 3)); \
+ offset; }) \
+
+#define DPI_ENGX_BUF(x) ({ \
+ u64 offset; \
+ \
+ offset = (0x40C0ULL | (x) << 3); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x100C0ULL | ((x) << 3)); \
+ offset; }) \
+
+#define DPI_EBUS_PORTX_CFG(x) ({ \
+ u64 offset; \
+ \
+ offset = (0x4100ULL | (x) << 3); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x10100ULL | ((x) << 3)); \
+ offset; }) \
+
+#define DPI_PF_RAS ({ \
+ u64 offset; \
+ \
+ offset = (0x4308ULL); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x10308ULL); \
+ offset; }) \
+
+#define DPI_PF_RAS_ENA_W1C ({ \
+ u64 offset; \
+ \
+ offset = (0x4318ULL); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x10318ULL); \
+ offset; }) \
+
+#define DPI_PF_RAS_ENA_W1S ({ \
+ u64 offset; \
+ \
+ offset = (0x4320ULL); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x10320ULL); \
+ offset; }) \
+
+#define DPI_DMA_CCX_INT(x) ({ \
+ u64 offset; \
+ \
+ offset = (0x5000ULL | (x) << 3); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x11000ULL | ((x) << 3)); \
+ offset; }) \
+
+#define DPI_DMA_CCX_INT_ENA_W1C(x) ({ \
+ u64 offset; \
+ \
+ offset = (0x5800ULL | (x) << 3); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x11800ULL | ((x) << 3)); \
+ offset; }) \
+
+#define DPI_REQQX_INT(x) ({ \
+ u64 offset; \
+ \
+ offset = (0x6600ULL | (x) << 3); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x12C00ULL | ((x) << 5)); \
+ offset; }) \
+
+#define DPI_REQQX_INT_ENA_W1C(x) ({ \
+ u64 offset; \
+ \
+ offset = (0x6680ULL | (x) << 3); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x13800ULL | ((x) << 5)); \
+ offset; }) \
+
+#define DPI_REQQX_INT_ENA_W1S(x) ({ \
+ u64 offset; \
+ \
+ offset = (0x66C0ULL | (x) << 3); \
+ if (is_otx3_dpi(dpi)) \
+ offset = (0x13C00ULL | ((x) << 5)); \
+ offset; }) \
+
+#define DPI_WCTL_FIF_THR (0x17008ULL)
+
+#define DPI_EBUS_MRRS_MIN 128
+#define DPI_EBUS_MRRS_MAX 1024
+#define DPI_EBUS_MPS_MIN 128
+#define DPI_EBUS_MPS_MAX 1024
+#define DPI_EBUS_MAX_PORTS 2
+#define DPI_EBUS_PORTX_CFG_MRRS(x) (((x) & 0x7) << 0)
+#define DPI_EBUS_PORTX_CFG_MPS(x) (((x) & 0x7) << 4)
+
+/* VF Registers: */
+#define DPI_VDMA_EN (0x0ULL)
+#define DPI_VDMA_REQQ_CTL (0x8ULL)
+#define DPI_VDMA_DBELL (0x10ULL)
+#define DPI_VDMA_SADDR (0x18ULL)
+#define DPI_VDMA_COUNTS (0x20ULL)
+#define DPI_VDMA_NADDR (0x28ULL)
+#define DPI_VDMA_IWBUSY (0x30ULL)
+#define DPI_VDMA_CNT (0x38ULL)
+#define DPI_VF_INT (0x100ULL)
+#define DPI_VF_INT_W1S (0x108ULL)
+#define DPI_VF_INT_ENA_W1C (0x110ULL)
+#define DPI_VF_INT_ENA_W1S (0x118ULL)
+
+struct dpivf_config {
+ uint16_t csize;
+ uint32_t aura;
+ uint16_t sso_pf_func;
+ uint16_t npa_pf_func;
+};
+
+struct dpipf_vf {
+ uint8_t this_vfid;
+ bool setup_done;
+ struct dpivf_config vf_config;
+};
+
+struct dpipf {
+ void __iomem *reg_base;
+ struct pci_dev *pdev;
+ int num_vec;
+ struct msix_entry *msix_entries;
+ int total_vfs;
+ int vfs_in_use;
+ struct dpipf_vf vf[DPI_MAX_VFS];
+};
+
+#define DPI_QUEUE_OPEN 0x1
+#define DPI_QUEUE_CLOSE 0x2
+#define DPI_REG_DUMP 0x3
+#define DPI_GET_REG_CFG 0x4
+
+union dpi_mbox_message_t {
+ uint64_t u[2];
+ struct dpi_mbox_message_s {
+ /* VF ID to configure */
+ uint64_t vfid :8;
+ /* Command code */
+ uint64_t cmd :4;
+ /* Command buffer size in 8-byte words */
+ uint64_t csize :14;
+ /* aura of the command buffer */
+ uint64_t aura :20;
+ /* SSO PF function */
+ uint64_t sso_pf_func :16;
+ /* NPA PF function */
+ uint64_t npa_pf_func :16;
+ } s;
+};
+
+struct otx2_dpipf_com_s {
+ int (*queue_config)(struct pci_dev *pfdev,
+ union dpi_mbox_message_t *req);
+};
+
+extern struct otx2_dpipf_com_s otx2_dpipf_com;
+
+#endif
--
2.24.1
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