[mirror_ubuntu-jammy-kernel.git] / drivers / net / ethernet / qlogic / qed / qed_main.c

/* QLogic qed NIC Driver
 * Copyright (c) 2015 QLogic Corporation
 *
 * This software is available under the terms of the GNU General Public License
 * (GPL) Version 2, available from the file COPYING in the main directory of
 * this source tree.
 */

#include <linux/stddef.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/version.h>
#include <linux/delay.h>
#include <asm/byteorder.h>
#include <linux/dma-mapping.h>
#include <linux/string.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/workqueue.h>
#include <linux/ethtool.h>
#include <linux/etherdevice.h>
#include <linux/vmalloc.h>
#include <linux/qed/qed_if.h>

#include "qed.h"
#include "qed_sp.h"
#include "qed_dev_api.h"
#include "qed_mcp.h"
#include "qed_hw.h"

static const char version[] =
        "QLogic QL4xxx 40G/100G Ethernet Driver qed " DRV_MODULE_VERSION "\n";

MODULE_DESCRIPTION("QLogic 25G/40G/50G/100G Core Module");
MODULE_LICENSE("GPL");
MODULE_VERSION(DRV_MODULE_VERSION);

#define FW_FILE_VERSION                         \
        __stringify(FW_MAJOR_VERSION) "."       \
        __stringify(FW_MINOR_VERSION) "."       \
        __stringify(FW_REVISION_VERSION) "."    \
        __stringify(FW_ENGINEERING_VERSION)

#define QED_FW_FILE_NAME        \
        "qed/qed_init_values_zipped-" FW_FILE_VERSION ".bin"

MODULE_FIRMWARE(QED_FW_FILE_NAME);

static int __init qed_init(void)
{
        pr_notice("qed_init called\n");

        pr_info("%s", version);

        return 0;
}

static void __exit qed_cleanup(void)
{
        pr_notice("qed_cleanup called\n");
}

module_init(qed_init);
module_exit(qed_cleanup);

/* Check if the DMA controller on the machine can properly handle the DMA
 * addressing required by the device.
*/
static int qed_set_coherency_mask(struct qed_dev *cdev)
{
        struct device *dev = &cdev->pdev->dev;

        if (dma_set_mask(dev, DMA_BIT_MASK(64)) == 0) {
                if (dma_set_coherent_mask(dev, DMA_BIT_MASK(64)) != 0) {
                        DP_NOTICE(cdev,
                                  "Can't request 64-bit consistent allocations\n");
                        return -EIO;
                }
        } else if (dma_set_mask(dev, DMA_BIT_MASK(32)) != 0) {
                DP_NOTICE(cdev, "Can't request 64b/32b DMA addresses\n");
                return -EIO;
        }

        return 0;
}

static void qed_free_pci(struct qed_dev *cdev)
{
        struct pci_dev *pdev = cdev->pdev;

        if (cdev->doorbells)
                iounmap(cdev->doorbells);
        if (cdev->regview)
                iounmap(cdev->regview);
        if (atomic_read(&pdev->enable_cnt) == 1)
                pci_release_regions(pdev);

        pci_disable_device(pdev);
}

/* Performs PCI initializations as well as initializing PCI-related parameters
 * in the device structrue. Returns 0 in case of success.
 */
static int qed_init_pci(struct qed_dev *cdev,
                        struct pci_dev *pdev)
{
        int rc;

        cdev->pdev = pdev;

        rc = pci_enable_device(pdev);
        if (rc) {
                DP_NOTICE(cdev, "Cannot enable PCI device\n");
                goto err0;
        }

        if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
                DP_NOTICE(cdev, "No memory region found in bar #0\n");
                rc = -EIO;
                goto err1;
        }

        if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
                DP_NOTICE(cdev, "No memory region found in bar #2\n");
                rc = -EIO;
                goto err1;
        }

        if (atomic_read(&pdev->enable_cnt) == 1) {
                rc = pci_request_regions(pdev, "qed");
                if (rc) {
                        DP_NOTICE(cdev,
                                  "Failed to request PCI memory resources\n");
                        goto err1;
                }
                pci_set_master(pdev);
                pci_save_state(pdev);
        }

        if (!pci_is_pcie(pdev)) {
                DP_NOTICE(cdev, "The bus is not PCI Express\n");
                rc = -EIO;
                goto err2;
        }

        cdev->pci_params.pm_cap = pci_find_capability(pdev, PCI_CAP_ID_PM);
        if (cdev->pci_params.pm_cap == 0)
                DP_NOTICE(cdev, "Cannot find power management capability\n");

        rc = qed_set_coherency_mask(cdev);
        if (rc)
                goto err2;

        cdev->pci_params.mem_start = pci_resource_start(pdev, 0);
        cdev->pci_params.mem_end = pci_resource_end(pdev, 0);
        cdev->pci_params.irq = pdev->irq;

        cdev->regview = pci_ioremap_bar(pdev, 0);
        if (!cdev->regview) {
                DP_NOTICE(cdev, "Cannot map register space, aborting\n");
                rc = -ENOMEM;
                goto err2;
        }

        cdev->db_phys_addr = pci_resource_start(cdev->pdev, 2);
        cdev->db_size = pci_resource_len(cdev->pdev, 2);
        cdev->doorbells = ioremap_wc(cdev->db_phys_addr, cdev->db_size);
        if (!cdev->doorbells) {
                DP_NOTICE(cdev, "Cannot map doorbell space\n");
                return -ENOMEM;
        }

        return 0;

err2:
        pci_release_regions(pdev);
err1:
        pci_disable_device(pdev);
err0:
        return rc;
}

int qed_fill_dev_info(struct qed_dev *cdev,
                      struct qed_dev_info *dev_info)
{
        struct qed_ptt  *ptt;

        memset(dev_info, 0, sizeof(struct qed_dev_info));

        dev_info->num_hwfns = cdev->num_hwfns;
        dev_info->pci_mem_start = cdev->pci_params.mem_start;
        dev_info->pci_mem_end = cdev->pci_params.mem_end;
        dev_info->pci_irq = cdev->pci_params.irq;
        dev_info->is_mf_default = IS_MF_DEFAULT(&cdev->hwfns[0]);
        ether_addr_copy(dev_info->hw_mac, cdev->hwfns[0].hw_info.hw_mac_addr);

        dev_info->fw_major = FW_MAJOR_VERSION;
        dev_info->fw_minor = FW_MINOR_VERSION;
        dev_info->fw_rev = FW_REVISION_VERSION;
        dev_info->fw_eng = FW_ENGINEERING_VERSION;
        dev_info->mf_mode = cdev->mf_mode;

        qed_mcp_get_mfw_ver(cdev, &dev_info->mfw_rev);

        ptt = qed_ptt_acquire(QED_LEADING_HWFN(cdev));
        if (ptt) {
                qed_mcp_get_flash_size(QED_LEADING_HWFN(cdev), ptt,
                                       &dev_info->flash_size);

                qed_ptt_release(QED_LEADING_HWFN(cdev), ptt);
        }

        return 0;
}

static void qed_free_cdev(struct qed_dev *cdev)
{
        kfree((void *)cdev);
}

static struct qed_dev *qed_alloc_cdev(struct pci_dev *pdev)
{
        struct qed_dev *cdev;

        cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
        if (!cdev)
                return cdev;

        qed_init_struct(cdev);

        return cdev;
}

/* Sets the requested power state */
static int qed_set_power_state(struct qed_dev *cdev,
                               pci_power_t state)
{
        if (!cdev)
                return -ENODEV;

        DP_VERBOSE(cdev, NETIF_MSG_DRV, "Omitting Power state change\n");
        return 0;
}

/* probing */
static struct qed_dev *qed_probe(struct pci_dev *pdev,
                                 enum qed_protocol protocol,
                                 u32 dp_module,
                                 u8 dp_level)
{
        struct qed_dev *cdev;
        int rc;

        cdev = qed_alloc_cdev(pdev);
        if (!cdev)
                goto err0;

        cdev->protocol = protocol;

        qed_init_dp(cdev, dp_module, dp_level);

        rc = qed_init_pci(cdev, pdev);
        if (rc) {
                DP_ERR(cdev, "init pci failed\n");
                goto err1;
        }
        DP_INFO(cdev, "PCI init completed successfully\n");

        rc = qed_hw_prepare(cdev, QED_PCI_DEFAULT);
        if (rc) {
                DP_ERR(cdev, "hw prepare failed\n");
                goto err2;
        }

        DP_INFO(cdev, "qed_probe completed successffuly\n");

        return cdev;

err2:
        qed_free_pci(cdev);
err1:
        qed_free_cdev(cdev);
err0:
        return NULL;
}

static void qed_remove(struct qed_dev *cdev)
{
        if (!cdev)
                return;

        qed_hw_remove(cdev);

        qed_free_pci(cdev);

        qed_set_power_state(cdev, PCI_D3hot);

        qed_free_cdev(cdev);
}

static void qed_disable_msix(struct qed_dev *cdev)
{
        if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
                pci_disable_msix(cdev->pdev);
                kfree(cdev->int_params.msix_table);
        } else if (cdev->int_params.out.int_mode == QED_INT_MODE_MSI) {
                pci_disable_msi(cdev->pdev);
        }

        memset(&cdev->int_params.out, 0, sizeof(struct qed_int_param));
}

static int qed_enable_msix(struct qed_dev *cdev,
                           struct qed_int_params *int_params)
{
        int i, rc, cnt;

        cnt = int_params->in.num_vectors;

        for (i = 0; i < cnt; i++)
                int_params->msix_table[i].entry = i;

        rc = pci_enable_msix_range(cdev->pdev, int_params->msix_table,
                                   int_params->in.min_msix_cnt, cnt);
        if (rc < cnt && rc >= int_params->in.min_msix_cnt &&
            (rc % cdev->num_hwfns)) {
                pci_disable_msix(cdev->pdev);

                /* If fastpath is initialized, we need at least one interrupt
                 * per hwfn [and the slow path interrupts]. New requested number
                 * should be a multiple of the number of hwfns.
                 */
                cnt = (rc / cdev->num_hwfns) * cdev->num_hwfns;
                DP_NOTICE(cdev,
                          "Trying to enable MSI-X with less vectors (%d out of %d)\n",
                          cnt, int_params->in.num_vectors);
                rc = pci_enable_msix_exact(cdev->pdev,
                                           int_params->msix_table, cnt);
                if (!rc)
                        rc = cnt;
        }

        if (rc > 0) {
                /* MSI-x configuration was achieved */
                int_params->out.int_mode = QED_INT_MODE_MSIX;
                int_params->out.num_vectors = rc;
                rc = 0;
        } else {
                DP_NOTICE(cdev,
                          "Failed to enable MSI-X [Requested %d vectors][rc %d]\n",
                          cnt, rc);
        }

        return rc;
}

/* This function outputs the int mode and the number of enabled msix vector */
static int qed_set_int_mode(struct qed_dev *cdev, bool force_mode)
{
        struct qed_int_params *int_params = &cdev->int_params;
        struct msix_entry *tbl;
        int rc = 0, cnt;

        switch (int_params->in.int_mode) {
        case QED_INT_MODE_MSIX:
                /* Allocate MSIX table */
                cnt = int_params->in.num_vectors;
                int_params->msix_table = kcalloc(cnt, sizeof(*tbl), GFP_KERNEL);
                if (!int_params->msix_table) {
                        rc = -ENOMEM;
                        goto out;
                }

                /* Enable MSIX */
                rc = qed_enable_msix(cdev, int_params);
                if (!rc)
                        goto out;

                DP_NOTICE(cdev, "Failed to enable MSI-X\n");
                kfree(int_params->msix_table);
                if (force_mode)
                        goto out;
                /* Fallthrough */

        case QED_INT_MODE_MSI:
                rc = pci_enable_msi(cdev->pdev);
                if (!rc) {
                        int_params->out.int_mode = QED_INT_MODE_MSI;
                        goto out;
                }

                DP_NOTICE(cdev, "Failed to enable MSI\n");
                if (force_mode)
                        goto out;
                /* Fallthrough */

        case QED_INT_MODE_INTA:
                        int_params->out.int_mode = QED_INT_MODE_INTA;
                        rc = 0;
                        goto out;
        default:
                DP_NOTICE(cdev, "Unknown int_mode value %d\n",
                          int_params->in.int_mode);
                rc = -EINVAL;
        }

out:
        cdev->int_coalescing_mode = QED_COAL_MODE_ENABLE;

        return rc;
}

static void qed_simd_handler_config(struct qed_dev *cdev, void *token,
                                    int index, void(*handler)(void *))
{
        struct qed_hwfn *hwfn = &cdev->hwfns[index % cdev->num_hwfns];
        int relative_idx = index / cdev->num_hwfns;

        hwfn->simd_proto_handler[relative_idx].func = handler;
        hwfn->simd_proto_handler[relative_idx].token = token;
}

static void qed_simd_handler_clean(struct qed_dev *cdev, int index)
{
        struct qed_hwfn *hwfn = &cdev->hwfns[index % cdev->num_hwfns];
        int relative_idx = index / cdev->num_hwfns;

        memset(&hwfn->simd_proto_handler[relative_idx], 0,
               sizeof(struct qed_simd_fp_handler));
}

static irqreturn_t qed_msix_sp_int(int irq, void *tasklet)
{
        tasklet_schedule((struct tasklet_struct *)tasklet);
        return IRQ_HANDLED;
}

static irqreturn_t qed_single_int(int irq, void *dev_instance)
{
        struct qed_dev *cdev = (struct qed_dev *)dev_instance;
        struct qed_hwfn *hwfn;
        irqreturn_t rc = IRQ_NONE;
        u64 status;
        int i, j;

        for (i = 0; i < cdev->num_hwfns; i++) {
                status = qed_int_igu_read_sisr_reg(&cdev->hwfns[i]);

                if (!status)
                        continue;

                hwfn = &cdev->hwfns[i];

                /* Slowpath interrupt */
                if (unlikely(status & 0x1)) {
                        tasklet_schedule(hwfn->sp_dpc);
                        status &= ~0x1;
                        rc = IRQ_HANDLED;
                }

                /* Fastpath interrupts */
                for (j = 0; j < 64; j++) {
                        if ((0x2ULL << j) & status) {
                                hwfn->simd_proto_handler[j].func(
                                        hwfn->simd_proto_handler[j].token);
                                status &= ~(0x2ULL << j);
                                rc = IRQ_HANDLED;
                        }
                }

                if (unlikely(status))
                        DP_VERBOSE(hwfn, NETIF_MSG_INTR,
                                   "got an unknown interrupt status 0x%llx\n",
                                   status);
        }

        return rc;
}

int qed_slowpath_irq_req(struct qed_hwfn *hwfn)
{
        struct qed_dev *cdev = hwfn->cdev;
        int rc = 0;
        u8 id;

        if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
                id = hwfn->my_id;
                snprintf(hwfn->name, NAME_SIZE, "sp-%d-%02x:%02x.%02x",
                         id, cdev->pdev->bus->number,
                         PCI_SLOT(cdev->pdev->devfn), hwfn->abs_pf_id);
                rc = request_irq(cdev->int_params.msix_table[id].vector,
                                 qed_msix_sp_int, 0, hwfn->name, hwfn->sp_dpc);
                if (!rc)
                        DP_VERBOSE(hwfn, (NETIF_MSG_INTR | QED_MSG_SP),
                                   "Requested slowpath MSI-X\n");
        } else {
                unsigned long flags = 0;

                snprintf(cdev->name, NAME_SIZE, "%02x:%02x.%02x",
                         cdev->pdev->bus->number, PCI_SLOT(cdev->pdev->devfn),
                         PCI_FUNC(cdev->pdev->devfn));

                if (cdev->int_params.out.int_mode == QED_INT_MODE_INTA)
                        flags |= IRQF_SHARED;

                rc = request_irq(cdev->pdev->irq, qed_single_int,
                                 flags, cdev->name, cdev);
        }

        return rc;
}

static void qed_slowpath_irq_free(struct qed_dev *cdev)
{
        int i;

        if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
                for_each_hwfn(cdev, i) {
                        if (!cdev->hwfns[i].b_int_requested)
                                break;
                        synchronize_irq(cdev->int_params.msix_table[i].vector);
                        free_irq(cdev->int_params.msix_table[i].vector,
                                 cdev->hwfns[i].sp_dpc);
                }
        } else {
                if (QED_LEADING_HWFN(cdev)->b_int_requested)
                        free_irq(cdev->pdev->irq, cdev);
        }
        qed_int_disable_post_isr_release(cdev);
}

static int qed_nic_stop(struct qed_dev *cdev)
{
        int i, rc;

        rc = qed_hw_stop(cdev);

        for (i = 0; i < cdev->num_hwfns; i++) {
                struct qed_hwfn *p_hwfn = &cdev->hwfns[i];

                if (p_hwfn->b_sp_dpc_enabled) {
                        tasklet_disable(p_hwfn->sp_dpc);
                        p_hwfn->b_sp_dpc_enabled = false;
                        DP_VERBOSE(cdev, NETIF_MSG_IFDOWN,
                                   "Disabled sp taskelt [hwfn %d] at %p\n",
                                   i, p_hwfn->sp_dpc);
                }
        }

        return rc;
}

static int qed_nic_reset(struct qed_dev *cdev)
{
        int rc;

        rc = qed_hw_reset(cdev);
        if (rc)
                return rc;

        qed_resc_free(cdev);

        return 0;
}

static int qed_nic_setup(struct qed_dev *cdev)
{
        int rc;

        rc = qed_resc_alloc(cdev);
        if (rc)
                return rc;

        DP_INFO(cdev, "Allocated qed resources\n");

        qed_resc_setup(cdev);

        return rc;
}

static int qed_set_int_fp(struct qed_dev *cdev, u16 cnt)
{
        int limit = 0;

        /* Mark the fastpath as free/used */
        cdev->int_params.fp_initialized = cnt ? true : false;

        if (cdev->int_params.out.int_mode != QED_INT_MODE_MSIX)
                limit = cdev->num_hwfns * 63;
        else if (cdev->int_params.fp_msix_cnt)
                limit = cdev->int_params.fp_msix_cnt;

        if (!limit)
                return -ENOMEM;

        return min_t(int, cnt, limit);
}

static int qed_get_int_fp(struct qed_dev *cdev, struct qed_int_info *info)
{
        memset(info, 0, sizeof(struct qed_int_info));

        if (!cdev->int_params.fp_initialized) {
                DP_INFO(cdev,
                        "Protocol driver requested interrupt information, but its support is not yet configured\n");
                return -EINVAL;
        }

        /* Need to expose only MSI-X information; Single IRQ is handled solely
         * by qed.
         */
        if (cdev->int_params.out.int_mode == QED_INT_MODE_MSIX) {
                int msix_base = cdev->int_params.fp_msix_base;

                info->msix_cnt = cdev->int_params.fp_msix_cnt;
                info->msix = &cdev->int_params.msix_table[msix_base];
        }

        return 0;
}

static int qed_slowpath_setup_int(struct qed_dev *cdev,
                                  enum qed_int_mode int_mode)
{
        int rc, i;
        u8 num_vectors = 0;

        memset(&cdev->int_params, 0, sizeof(struct qed_int_params));

        cdev->int_params.in.int_mode = int_mode;
        for_each_hwfn(cdev, i)
                num_vectors +=  qed_int_get_num_sbs(&cdev->hwfns[i], NULL) + 1;
        cdev->int_params.in.num_vectors = num_vectors;

        /* We want a minimum of one slowpath and one fastpath vector per hwfn */
        cdev->int_params.in.min_msix_cnt = cdev->num_hwfns * 2;

        rc = qed_set_int_mode(cdev, false);
        if (rc)  {
                DP_ERR(cdev, "qed_slowpath_setup_int ERR\n");
                return rc;
        }

        cdev->int_params.fp_msix_base = cdev->num_hwfns;
        cdev->int_params.fp_msix_cnt = cdev->int_params.out.num_vectors -
                                       cdev->num_hwfns;

        return 0;
}

u32 qed_unzip_data(struct qed_hwfn *p_hwfn, u32 input_len,
                   u8 *input_buf, u32 max_size, u8 *unzip_buf)
{
        int rc;

        p_hwfn->stream->next_in = input_buf;
        p_hwfn->stream->avail_in = input_len;
        p_hwfn->stream->next_out = unzip_buf;
        p_hwfn->stream->avail_out = max_size;

        rc = zlib_inflateInit2(p_hwfn->stream, MAX_WBITS);

        if (rc != Z_OK) {
                DP_VERBOSE(p_hwfn, NETIF_MSG_DRV, "zlib init failed, rc = %d\n",
                           rc);
                return 0;
        }

        rc = zlib_inflate(p_hwfn->stream, Z_FINISH);
        zlib_inflateEnd(p_hwfn->stream);

        if (rc != Z_OK && rc != Z_STREAM_END) {
                DP_VERBOSE(p_hwfn, NETIF_MSG_DRV, "FW unzip error: %s, rc=%d\n",
                           p_hwfn->stream->msg, rc);
                return 0;
        }

        return p_hwfn->stream->total_out / 4;
}

static int qed_alloc_stream_mem(struct qed_dev *cdev)
{
        int i;
        void *workspace;

        for_each_hwfn(cdev, i) {
                struct qed_hwfn *p_hwfn = &cdev->hwfns[i];

                p_hwfn->stream = kzalloc(sizeof(*p_hwfn->stream), GFP_KERNEL);
                if (!p_hwfn->stream)
                        return -ENOMEM;

                workspace = vzalloc(zlib_inflate_workspacesize());
                if (!workspace)
                        return -ENOMEM;
                p_hwfn->stream->workspace = workspace;
        }

        return 0;
}

static void qed_free_stream_mem(struct qed_dev *cdev)
{
        int i;

        for_each_hwfn(cdev, i) {
                struct qed_hwfn *p_hwfn = &cdev->hwfns[i];

                if (!p_hwfn->stream)
                        return;

                vfree(p_hwfn->stream->workspace);
                kfree(p_hwfn->stream);
        }
}

static void qed_update_pf_params(struct qed_dev *cdev,
                                 struct qed_pf_params *params)
{
        int i;

        for (i = 0; i < cdev->num_hwfns; i++) {
                struct qed_hwfn *p_hwfn = &cdev->hwfns[i];

                p_hwfn->pf_params = *params;
        }
}

static int qed_slowpath_start(struct qed_dev *cdev,
                              struct qed_slowpath_params *params)
{
        struct qed_mcp_drv_version drv_version;
        const u8 *data = NULL;
        struct qed_hwfn *hwfn;
        int rc;

        rc = request_firmware(&cdev->firmware, QED_FW_FILE_NAME,
                              &cdev->pdev->dev);
        if (rc) {
                DP_NOTICE(cdev,
                          "Failed to find fw file - /lib/firmware/%s\n",
                          QED_FW_FILE_NAME);
                goto err;
        }

        rc = qed_nic_setup(cdev);
        if (rc)
                goto err;

        rc = qed_slowpath_setup_int(cdev, params->int_mode);
        if (rc)
                goto err1;

        /* Allocate stream for unzipping */
        rc = qed_alloc_stream_mem(cdev);
        if (rc) {
                DP_NOTICE(cdev, "Failed to allocate stream memory\n");
                goto err2;
        }

        /* Start the slowpath */
        data = cdev->firmware->data;

        rc = qed_hw_init(cdev, true, cdev->int_params.out.int_mode,
                         true, data);
        if (rc)
                goto err3;

        DP_INFO(cdev,
                "HW initialization and function start completed successfully\n");

        hwfn = QED_LEADING_HWFN(cdev);
        drv_version.version = (params->drv_major << 24) |
                              (params->drv_minor << 16) |
                              (params->drv_rev << 8) |
                              (params->drv_eng);
        strlcpy(drv_version.name, params->name,
                MCP_DRV_VER_STR_SIZE - 4);
        rc = qed_mcp_send_drv_version(hwfn, hwfn->p_main_ptt,
                                      &drv_version);
        if (rc) {
                DP_NOTICE(cdev, "Failed sending drv version command\n");
                return rc;
        }

        return 0;

err3:
        qed_free_stream_mem(cdev);
        qed_slowpath_irq_free(cdev);
err2:
        qed_disable_msix(cdev);
err1:
        qed_resc_free(cdev);
err:
        release_firmware(cdev->firmware);

        return rc;
}

static int qed_slowpath_stop(struct qed_dev *cdev)
{
        if (!cdev)
                return -ENODEV;

        qed_free_stream_mem(cdev);

        qed_nic_stop(cdev);
        qed_slowpath_irq_free(cdev);

        qed_disable_msix(cdev);
        qed_nic_reset(cdev);

        release_firmware(cdev->firmware);

        return 0;
}

static void qed_set_id(struct qed_dev *cdev, char name[NAME_SIZE],
                       char ver_str[VER_SIZE])
{
        int i;

        memcpy(cdev->name, name, NAME_SIZE);
        for_each_hwfn(cdev, i)
                snprintf(cdev->hwfns[i].name, NAME_SIZE, "%s-%d", name, i);

        memcpy(cdev->ver_str, ver_str, VER_SIZE);
        cdev->drv_type = DRV_ID_DRV_TYPE_LINUX;
}

static u32 qed_sb_init(struct qed_dev *cdev,
                       struct qed_sb_info *sb_info,
                       void *sb_virt_addr,
                       dma_addr_t sb_phy_addr, u16 sb_id,
                       enum qed_sb_type type)
{
        struct qed_hwfn *p_hwfn;
        int hwfn_index;
        u16 rel_sb_id;
        u8 n_hwfns;
        u32 rc;

        /* RoCE uses single engine and CMT uses two engines. When using both
         * we force only a single engine. Storage uses only engine 0 too.
         */
        if (type == QED_SB_TYPE_L2_QUEUE)
                n_hwfns = cdev->num_hwfns;
        else
                n_hwfns = 1;

        hwfn_index = sb_id % n_hwfns;
        p_hwfn = &cdev->hwfns[hwfn_index];
        rel_sb_id = sb_id / n_hwfns;

        DP_VERBOSE(cdev, NETIF_MSG_INTR,
                   "hwfn [%d] <--[init]-- SB %04x [0x%04x upper]\n",
                   hwfn_index, rel_sb_id, sb_id);

        rc = qed_int_sb_init(p_hwfn, p_hwfn->p_main_ptt, sb_info,
                             sb_virt_addr, sb_phy_addr, rel_sb_id);

        return rc;
}

static u32 qed_sb_release(struct qed_dev *cdev,
                          struct qed_sb_info *sb_info,
                          u16 sb_id)
{
        struct qed_hwfn *p_hwfn;
        int hwfn_index;
        u16 rel_sb_id;
        u32 rc;

        hwfn_index = sb_id % cdev->num_hwfns;
        p_hwfn = &cdev->hwfns[hwfn_index];
        rel_sb_id = sb_id / cdev->num_hwfns;

        DP_VERBOSE(cdev, NETIF_MSG_INTR,
                   "hwfn [%d] <--[init]-- SB %04x [0x%04x upper]\n",
                   hwfn_index, rel_sb_id, sb_id);

        rc = qed_int_sb_release(p_hwfn, sb_info, rel_sb_id);

        return rc;
}

static int qed_set_link(struct qed_dev *cdev,
                        struct qed_link_params *params)
{
        struct qed_hwfn *hwfn;
        struct qed_mcp_link_params *link_params;
        struct qed_ptt *ptt;
        int rc;

        if (!cdev)
                return -ENODEV;

        /* The link should be set only once per PF */
        hwfn = &cdev->hwfns[0];

        ptt = qed_ptt_acquire(hwfn);
        if (!ptt)
                return -EBUSY;

        link_params = qed_mcp_get_link_params(hwfn);
        if (params->override_flags & QED_LINK_OVERRIDE_SPEED_AUTONEG)
                link_params->speed.autoneg = params->autoneg;
        if (params->override_flags & QED_LINK_OVERRIDE_SPEED_ADV_SPEEDS) {
                link_params->speed.advertised_speeds = 0;
                if ((params->adv_speeds & SUPPORTED_1000baseT_Half) ||
                    (params->adv_speeds & SUPPORTED_1000baseT_Full))
                        link_params->speed.advertised_speeds |=
                                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_1G;
                if (params->adv_speeds & SUPPORTED_10000baseKR_Full)
                        link_params->speed.advertised_speeds |=
                                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_10G;
                if (params->adv_speeds & SUPPORTED_40000baseLR4_Full)
                        link_params->speed.advertised_speeds |=
                                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_40G;
                if (params->adv_speeds & 0)
                        link_params->speed.advertised_speeds |=
                                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_50G;
                if (params->adv_speeds & 0)
                        link_params->speed.advertised_speeds |=
                                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_100G;
        }
        if (params->override_flags & QED_LINK_OVERRIDE_SPEED_FORCED_SPEED)
                link_params->speed.forced_speed = params->forced_speed;

        rc = qed_mcp_set_link(hwfn, ptt, params->link_up);

        qed_ptt_release(hwfn, ptt);

        return rc;
}

static int qed_get_port_type(u32 media_type)
{
        int port_type;

        switch (media_type) {
        case MEDIA_SFPP_10G_FIBER:
        case MEDIA_SFP_1G_FIBER:
        case MEDIA_XFP_FIBER:
        case MEDIA_KR:
                port_type = PORT_FIBRE;
                break;
        case MEDIA_DA_TWINAX:
                port_type = PORT_DA;
                break;
        case MEDIA_BASE_T:
                port_type = PORT_TP;
                break;
        case MEDIA_NOT_PRESENT:
                port_type = PORT_NONE;
                break;
        case MEDIA_UNSPECIFIED:
        default:
                port_type = PORT_OTHER;
                break;
        }
        return port_type;
}

static void qed_fill_link(struct qed_hwfn *hwfn,
                          struct qed_link_output *if_link)
{
        struct qed_mcp_link_params params;
        struct qed_mcp_link_state link;
        struct qed_mcp_link_capabilities link_caps;
        u32 media_type;

        memset(if_link, 0, sizeof(*if_link));

        /* Prepare source inputs */
        memcpy(&params, qed_mcp_get_link_params(hwfn), sizeof(params));
        memcpy(&link, qed_mcp_get_link_state(hwfn), sizeof(link));
        memcpy(&link_caps, qed_mcp_get_link_capabilities(hwfn),
               sizeof(link_caps));

        /* Set the link parameters to pass to protocol driver */
        if (link.link_up)
                if_link->link_up = true;

        /* TODO - at the moment assume supported and advertised speed equal */
        if_link->supported_caps = SUPPORTED_FIBRE;
        if (params.speed.autoneg)
                if_link->supported_caps |= SUPPORTED_Autoneg;
        if (params.pause.autoneg ||
            (params.pause.forced_rx && params.pause.forced_tx))
                if_link->supported_caps |= SUPPORTED_Asym_Pause;
        if (params.pause.autoneg || params.pause.forced_rx ||
            params.pause.forced_tx)
                if_link->supported_caps |= SUPPORTED_Pause;

        if_link->advertised_caps = if_link->supported_caps;
        if (params.speed.advertised_speeds &
            NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_1G)
                if_link->advertised_caps |= SUPPORTED_1000baseT_Half |
                                           SUPPORTED_1000baseT_Full;
        if (params.speed.advertised_speeds &
            NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_10G)
                if_link->advertised_caps |= SUPPORTED_10000baseKR_Full;
        if (params.speed.advertised_speeds &
                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_40G)
                if_link->advertised_caps |= SUPPORTED_40000baseLR4_Full;
        if (params.speed.advertised_speeds &
                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_50G)
                if_link->advertised_caps |= 0;
        if (params.speed.advertised_speeds &
                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_100G)
                if_link->advertised_caps |= 0;

        if (link_caps.speed_capabilities &
            NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_1G)
                if_link->supported_caps |= SUPPORTED_1000baseT_Half |
                                           SUPPORTED_1000baseT_Full;
        if (link_caps.speed_capabilities &
            NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_10G)
                if_link->supported_caps |= SUPPORTED_10000baseKR_Full;
        if (link_caps.speed_capabilities &
                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_40G)
                if_link->supported_caps |= SUPPORTED_40000baseLR4_Full;
        if (link_caps.speed_capabilities &
                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_50G)
                if_link->supported_caps |= 0;
        if (link_caps.speed_capabilities &
                NVM_CFG1_PORT_DRV_SPEED_CAPABILITY_MASK_100G)
                if_link->supported_caps |= 0;

        if (link.link_up)
                if_link->speed = link.speed;

        /* TODO - fill duplex properly */
        if_link->duplex = DUPLEX_FULL;
        qed_mcp_get_media_type(hwfn->cdev, &media_type);
        if_link->port = qed_get_port_type(media_type);

        if_link->autoneg = params.speed.autoneg;

        if (params.pause.autoneg)
                if_link->pause_config |= QED_LINK_PAUSE_AUTONEG_ENABLE;
        if (params.pause.forced_rx)
                if_link->pause_config |= QED_LINK_PAUSE_RX_ENABLE;
        if (params.pause.forced_tx)
                if_link->pause_config |= QED_LINK_PAUSE_TX_ENABLE;

        /* Link partner capabilities */
        if (link.partner_adv_speed &
            QED_LINK_PARTNER_SPEED_1G_HD)
                if_link->lp_caps |= SUPPORTED_1000baseT_Half;
        if (link.partner_adv_speed &
            QED_LINK_PARTNER_SPEED_1G_FD)
                if_link->lp_caps |= SUPPORTED_1000baseT_Full;
        if (link.partner_adv_speed &
            QED_LINK_PARTNER_SPEED_10G)
                if_link->lp_caps |= SUPPORTED_10000baseKR_Full;
        if (link.partner_adv_speed &
            QED_LINK_PARTNER_SPEED_40G)
                if_link->lp_caps |= SUPPORTED_40000baseLR4_Full;
        if (link.partner_adv_speed &
            QED_LINK_PARTNER_SPEED_50G)
                if_link->lp_caps |= 0;
        if (link.partner_adv_speed &
            QED_LINK_PARTNER_SPEED_100G)
                if_link->lp_caps |= 0;

        if (link.an_complete)
                if_link->lp_caps |= SUPPORTED_Autoneg;

        if (link.partner_adv_pause)
                if_link->lp_caps |= SUPPORTED_Pause;
        if (link.partner_adv_pause == QED_LINK_PARTNER_ASYMMETRIC_PAUSE ||
            link.partner_adv_pause == QED_LINK_PARTNER_BOTH_PAUSE)
                if_link->lp_caps |= SUPPORTED_Asym_Pause;
}

static void qed_get_current_link(struct qed_dev *cdev,
                                 struct qed_link_output *if_link)
{
        qed_fill_link(&cdev->hwfns[0], if_link);
}

void qed_link_update(struct qed_hwfn *hwfn)
{
        void *cookie = hwfn->cdev->ops_cookie;
        struct qed_common_cb_ops *op = hwfn->cdev->protocol_ops.common;
        struct qed_link_output if_link;

        qed_fill_link(hwfn, &if_link);

        if (IS_LEAD_HWFN(hwfn) && cookie)
                op->link_update(cookie, &if_link);
}

static int qed_drain(struct qed_dev *cdev)
{
        struct qed_hwfn *hwfn;
        struct qed_ptt *ptt;
        int i, rc;

        for_each_hwfn(cdev, i) {
                hwfn = &cdev->hwfns[i];
                ptt = qed_ptt_acquire(hwfn);
                if (!ptt) {
                        DP_NOTICE(hwfn, "Failed to drain NIG; No PTT\n");
                        return -EBUSY;
                }
                rc = qed_mcp_drain(hwfn, ptt);
                if (rc)
                        return rc;
                qed_ptt_release(hwfn, ptt);
        }

        return 0;
}

static int qed_set_led(struct qed_dev *cdev, enum qed_led_mode mode)
{
        struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
        struct qed_ptt *ptt;
        int status = 0;

        ptt = qed_ptt_acquire(hwfn);
        if (!ptt)
                return -EAGAIN;

        status = qed_mcp_set_led(hwfn, ptt, mode);

        qed_ptt_release(hwfn, ptt);

        return status;
}

const struct qed_common_ops qed_common_ops_pass = {
        .probe = &qed_probe,
        .remove = &qed_remove,
        .set_power_state = &qed_set_power_state,
        .set_id = &qed_set_id,
        .update_pf_params = &qed_update_pf_params,
        .slowpath_start = &qed_slowpath_start,
        .slowpath_stop = &qed_slowpath_stop,
        .set_fp_int = &qed_set_int_fp,
        .get_fp_int = &qed_get_int_fp,
        .sb_init = &qed_sb_init,
        .sb_release = &qed_sb_release,
        .simd_handler_config = &qed_simd_handler_config,
        .simd_handler_clean = &qed_simd_handler_clean,
        .set_link = &qed_set_link,
        .get_link = &qed_get_current_link,
        .drain = &qed_drain,
        .update_msglvl = &qed_init_dp,
        .chain_alloc = &qed_chain_alloc,
        .chain_free = &qed_chain_free,
        .set_led = &qed_set_led,
};

u32 qed_get_protocol_version(enum qed_protocol protocol)
{
        switch (protocol) {
        case QED_PROTOCOL_ETH:
                return QED_ETH_INTERFACE_VERSION;
        default:
                return 0;
        }
}
EXPORT_SYMBOL(qed_get_protocol_version);