1548 lines
37 KiB
C
1548 lines
37 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* FUJITSU Extended Socket Network Device driver
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* Copyright (c) 2015 FUJITSU LIMITED
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/nls.h>
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#include <linux/platform_device.h>
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#include <linux/netdevice.h>
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#include <linux/interrupt.h>
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#include "fjes.h"
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#include "fjes_trace.h"
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#define MAJ 1
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#define MIN 2
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#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN)
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#define DRV_NAME "fjes"
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char fjes_driver_name[] = DRV_NAME;
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char fjes_driver_version[] = DRV_VERSION;
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static const char fjes_driver_string[] =
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"FUJITSU Extended Socket Network Device Driver";
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static const char fjes_copyright[] =
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"Copyright (c) 2015 FUJITSU LIMITED";
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MODULE_AUTHOR("Taku Izumi <izumi.taku@jp.fujitsu.com>");
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MODULE_DESCRIPTION("FUJITSU Extended Socket Network Device Driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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#define ACPI_MOTHERBOARD_RESOURCE_HID "PNP0C02"
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static const struct acpi_device_id fjes_acpi_ids[] = {
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{ACPI_MOTHERBOARD_RESOURCE_HID, 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, fjes_acpi_ids);
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static bool is_extended_socket_device(struct acpi_device *device)
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{
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struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL};
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char str_buf[sizeof(FJES_ACPI_SYMBOL) + 1];
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union acpi_object *str;
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acpi_status status;
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int result;
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status = acpi_evaluate_object(device->handle, "_STR", NULL, &buffer);
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if (ACPI_FAILURE(status))
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return false;
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str = buffer.pointer;
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result = utf16s_to_utf8s((wchar_t *)str->string.pointer,
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str->string.length, UTF16_LITTLE_ENDIAN,
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str_buf, sizeof(str_buf) - 1);
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str_buf[result] = 0;
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if (strncmp(FJES_ACPI_SYMBOL, str_buf, strlen(FJES_ACPI_SYMBOL)) != 0) {
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kfree(buffer.pointer);
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return false;
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}
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kfree(buffer.pointer);
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return true;
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}
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static int acpi_check_extended_socket_status(struct acpi_device *device)
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{
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unsigned long long sta;
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acpi_status status;
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status = acpi_evaluate_integer(device->handle, "_STA", NULL, &sta);
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if (ACPI_FAILURE(status))
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return -ENODEV;
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if (!((sta & ACPI_STA_DEVICE_PRESENT) &&
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(sta & ACPI_STA_DEVICE_ENABLED) &&
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(sta & ACPI_STA_DEVICE_UI) &&
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(sta & ACPI_STA_DEVICE_FUNCTIONING)))
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return -ENODEV;
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return 0;
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}
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static acpi_status
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fjes_get_acpi_resource(struct acpi_resource *acpi_res, void *data)
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{
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struct acpi_resource_address32 *addr;
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struct acpi_resource_irq *irq;
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struct resource *res = data;
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switch (acpi_res->type) {
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case ACPI_RESOURCE_TYPE_ADDRESS32:
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addr = &acpi_res->data.address32;
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res[0].start = addr->address.minimum;
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res[0].end = addr->address.minimum +
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addr->address.address_length - 1;
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break;
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case ACPI_RESOURCE_TYPE_IRQ:
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irq = &acpi_res->data.irq;
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if (irq->interrupt_count != 1)
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return AE_ERROR;
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res[1].start = irq->interrupts[0];
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res[1].end = irq->interrupts[0];
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break;
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default:
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break;
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}
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return AE_OK;
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}
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static struct resource fjes_resource[] = {
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DEFINE_RES_MEM(0, 1),
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DEFINE_RES_IRQ(0)
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};
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static int fjes_acpi_add(struct acpi_device *device)
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{
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struct platform_device *plat_dev;
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acpi_status status;
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if (!is_extended_socket_device(device))
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return -ENODEV;
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if (acpi_check_extended_socket_status(device))
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return -ENODEV;
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status = acpi_walk_resources(device->handle, METHOD_NAME__CRS,
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fjes_get_acpi_resource, fjes_resource);
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if (ACPI_FAILURE(status))
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return -ENODEV;
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/* create platform_device */
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plat_dev = platform_device_register_simple(DRV_NAME, 0, fjes_resource,
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ARRAY_SIZE(fjes_resource));
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if (IS_ERR(plat_dev))
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return PTR_ERR(plat_dev);
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device->driver_data = plat_dev;
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return 0;
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}
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static void fjes_acpi_remove(struct acpi_device *device)
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{
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struct platform_device *plat_dev;
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plat_dev = (struct platform_device *)acpi_driver_data(device);
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platform_device_unregister(plat_dev);
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}
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static struct acpi_driver fjes_acpi_driver = {
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.name = DRV_NAME,
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.class = DRV_NAME,
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.owner = THIS_MODULE,
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.ids = fjes_acpi_ids,
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.ops = {
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.add = fjes_acpi_add,
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.remove = fjes_acpi_remove,
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},
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};
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static int fjes_setup_resources(struct fjes_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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struct ep_share_mem_info *buf_pair;
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struct fjes_hw *hw = &adapter->hw;
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unsigned long flags;
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int result;
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int epidx;
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mutex_lock(&hw->hw_info.lock);
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result = fjes_hw_request_info(hw);
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switch (result) {
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case 0:
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for (epidx = 0; epidx < hw->max_epid; epidx++) {
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hw->ep_shm_info[epidx].es_status =
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hw->hw_info.res_buf->info.info[epidx].es_status;
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hw->ep_shm_info[epidx].zone =
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hw->hw_info.res_buf->info.info[epidx].zone;
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}
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break;
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default:
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case -ENOMSG:
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case -EBUSY:
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adapter->force_reset = true;
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mutex_unlock(&hw->hw_info.lock);
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return result;
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}
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mutex_unlock(&hw->hw_info.lock);
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for (epidx = 0; epidx < (hw->max_epid); epidx++) {
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if ((epidx != hw->my_epid) &&
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(hw->ep_shm_info[epidx].es_status ==
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FJES_ZONING_STATUS_ENABLE)) {
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fjes_hw_raise_interrupt(hw, epidx,
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REG_ICTL_MASK_INFO_UPDATE);
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hw->ep_shm_info[epidx].ep_stats
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.send_intr_zoneupdate += 1;
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}
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}
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msleep(FJES_OPEN_ZONE_UPDATE_WAIT * hw->max_epid);
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for (epidx = 0; epidx < (hw->max_epid); epidx++) {
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if (epidx == hw->my_epid)
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continue;
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buf_pair = &hw->ep_shm_info[epidx];
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spin_lock_irqsave(&hw->rx_status_lock, flags);
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fjes_hw_setup_epbuf(&buf_pair->tx, netdev->dev_addr,
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netdev->mtu);
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spin_unlock_irqrestore(&hw->rx_status_lock, flags);
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if (fjes_hw_epid_is_same_zone(hw, epidx)) {
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mutex_lock(&hw->hw_info.lock);
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result =
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fjes_hw_register_buff_addr(hw, epidx, buf_pair);
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mutex_unlock(&hw->hw_info.lock);
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switch (result) {
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case 0:
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break;
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case -ENOMSG:
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case -EBUSY:
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default:
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adapter->force_reset = true;
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return result;
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}
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hw->ep_shm_info[epidx].ep_stats
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.com_regist_buf_exec += 1;
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}
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}
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return 0;
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}
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static void fjes_rx_irq(struct fjes_adapter *adapter, int src_epid)
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{
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struct fjes_hw *hw = &adapter->hw;
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fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, true);
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adapter->unset_rx_last = true;
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napi_schedule(&adapter->napi);
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}
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static void fjes_stop_req_irq(struct fjes_adapter *adapter, int src_epid)
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{
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struct fjes_hw *hw = &adapter->hw;
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enum ep_partner_status status;
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unsigned long flags;
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set_bit(src_epid, &hw->hw_info.buffer_unshare_reserve_bit);
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status = fjes_hw_get_partner_ep_status(hw, src_epid);
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trace_fjes_stop_req_irq_pre(hw, src_epid, status);
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switch (status) {
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case EP_PARTNER_WAITING:
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spin_lock_irqsave(&hw->rx_status_lock, flags);
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hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |=
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FJES_RX_STOP_REQ_DONE;
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spin_unlock_irqrestore(&hw->rx_status_lock, flags);
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clear_bit(src_epid, &hw->txrx_stop_req_bit);
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fallthrough;
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case EP_PARTNER_UNSHARE:
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case EP_PARTNER_COMPLETE:
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default:
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set_bit(src_epid, &adapter->unshare_watch_bitmask);
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if (!work_pending(&adapter->unshare_watch_task))
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queue_work(adapter->control_wq,
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&adapter->unshare_watch_task);
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break;
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case EP_PARTNER_SHARED:
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set_bit(src_epid, &hw->epstop_req_bit);
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if (!work_pending(&hw->epstop_task))
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queue_work(adapter->control_wq, &hw->epstop_task);
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break;
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}
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trace_fjes_stop_req_irq_post(hw, src_epid);
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}
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static void fjes_txrx_stop_req_irq(struct fjes_adapter *adapter,
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int src_epid)
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{
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struct fjes_hw *hw = &adapter->hw;
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enum ep_partner_status status;
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unsigned long flags;
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status = fjes_hw_get_partner_ep_status(hw, src_epid);
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trace_fjes_txrx_stop_req_irq_pre(hw, src_epid, status);
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switch (status) {
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case EP_PARTNER_UNSHARE:
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case EP_PARTNER_COMPLETE:
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default:
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break;
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case EP_PARTNER_WAITING:
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if (src_epid < hw->my_epid) {
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spin_lock_irqsave(&hw->rx_status_lock, flags);
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hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |=
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FJES_RX_STOP_REQ_DONE;
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spin_unlock_irqrestore(&hw->rx_status_lock, flags);
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clear_bit(src_epid, &hw->txrx_stop_req_bit);
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set_bit(src_epid, &adapter->unshare_watch_bitmask);
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if (!work_pending(&adapter->unshare_watch_task))
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queue_work(adapter->control_wq,
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&adapter->unshare_watch_task);
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}
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break;
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case EP_PARTNER_SHARED:
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if (hw->ep_shm_info[src_epid].rx.info->v1i.rx_status &
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FJES_RX_STOP_REQ_REQUEST) {
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set_bit(src_epid, &hw->epstop_req_bit);
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if (!work_pending(&hw->epstop_task))
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queue_work(adapter->control_wq,
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&hw->epstop_task);
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}
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break;
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}
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trace_fjes_txrx_stop_req_irq_post(hw, src_epid);
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}
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static void fjes_update_zone_irq(struct fjes_adapter *adapter,
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int src_epid)
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{
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struct fjes_hw *hw = &adapter->hw;
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if (!work_pending(&hw->update_zone_task))
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queue_work(adapter->control_wq, &hw->update_zone_task);
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}
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static irqreturn_t fjes_intr(int irq, void *data)
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{
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struct fjes_adapter *adapter = data;
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struct fjes_hw *hw = &adapter->hw;
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irqreturn_t ret;
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u32 icr;
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icr = fjes_hw_capture_interrupt_status(hw);
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if (icr & REG_IS_MASK_IS_ASSERT) {
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if (icr & REG_ICTL_MASK_RX_DATA) {
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fjes_rx_irq(adapter, icr & REG_IS_MASK_EPID);
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hw->ep_shm_info[icr & REG_IS_MASK_EPID].ep_stats
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.recv_intr_rx += 1;
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}
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if (icr & REG_ICTL_MASK_DEV_STOP_REQ) {
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fjes_stop_req_irq(adapter, icr & REG_IS_MASK_EPID);
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hw->ep_shm_info[icr & REG_IS_MASK_EPID].ep_stats
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.recv_intr_stop += 1;
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}
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if (icr & REG_ICTL_MASK_TXRX_STOP_REQ) {
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fjes_txrx_stop_req_irq(adapter, icr & REG_IS_MASK_EPID);
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hw->ep_shm_info[icr & REG_IS_MASK_EPID].ep_stats
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.recv_intr_unshare += 1;
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}
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if (icr & REG_ICTL_MASK_TXRX_STOP_DONE)
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fjes_hw_set_irqmask(hw,
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REG_ICTL_MASK_TXRX_STOP_DONE, true);
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if (icr & REG_ICTL_MASK_INFO_UPDATE) {
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fjes_update_zone_irq(adapter, icr & REG_IS_MASK_EPID);
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hw->ep_shm_info[icr & REG_IS_MASK_EPID].ep_stats
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.recv_intr_zoneupdate += 1;
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}
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ret = IRQ_HANDLED;
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} else {
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ret = IRQ_NONE;
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}
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return ret;
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}
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static int fjes_request_irq(struct fjes_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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int result = -1;
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adapter->interrupt_watch_enable = true;
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if (!delayed_work_pending(&adapter->interrupt_watch_task)) {
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queue_delayed_work(adapter->control_wq,
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&adapter->interrupt_watch_task,
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FJES_IRQ_WATCH_DELAY);
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}
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if (!adapter->irq_registered) {
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result = request_irq(adapter->hw.hw_res.irq, fjes_intr,
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IRQF_SHARED, netdev->name, adapter);
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if (result)
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adapter->irq_registered = false;
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else
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adapter->irq_registered = true;
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}
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return result;
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}
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static void fjes_free_irq(struct fjes_adapter *adapter)
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{
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struct fjes_hw *hw = &adapter->hw;
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adapter->interrupt_watch_enable = false;
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cancel_delayed_work_sync(&adapter->interrupt_watch_task);
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fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, true);
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if (adapter->irq_registered) {
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free_irq(adapter->hw.hw_res.irq, adapter);
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adapter->irq_registered = false;
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}
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}
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static void fjes_free_resources(struct fjes_adapter *adapter)
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{
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struct net_device *netdev = adapter->netdev;
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struct fjes_device_command_param param;
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struct ep_share_mem_info *buf_pair;
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struct fjes_hw *hw = &adapter->hw;
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bool reset_flag = false;
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unsigned long flags;
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int result;
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int epidx;
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for (epidx = 0; epidx < hw->max_epid; epidx++) {
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if (epidx == hw->my_epid)
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continue;
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mutex_lock(&hw->hw_info.lock);
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result = fjes_hw_unregister_buff_addr(hw, epidx);
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mutex_unlock(&hw->hw_info.lock);
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hw->ep_shm_info[epidx].ep_stats.com_unregist_buf_exec += 1;
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if (result)
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reset_flag = true;
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buf_pair = &hw->ep_shm_info[epidx];
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spin_lock_irqsave(&hw->rx_status_lock, flags);
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fjes_hw_setup_epbuf(&buf_pair->tx,
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netdev->dev_addr, netdev->mtu);
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spin_unlock_irqrestore(&hw->rx_status_lock, flags);
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clear_bit(epidx, &hw->txrx_stop_req_bit);
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}
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if (reset_flag || adapter->force_reset) {
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result = fjes_hw_reset(hw);
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adapter->force_reset = false;
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if (result)
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adapter->open_guard = true;
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hw->hw_info.buffer_share_bit = 0;
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memset((void *)¶m, 0, sizeof(param));
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param.req_len = hw->hw_info.req_buf_size;
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param.req_start = __pa(hw->hw_info.req_buf);
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param.res_len = hw->hw_info.res_buf_size;
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param.res_start = __pa(hw->hw_info.res_buf);
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param.share_start = __pa(hw->hw_info.share->ep_status);
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fjes_hw_init_command_registers(hw, ¶m);
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}
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}
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/* fjes_open - Called when a network interface is made active */
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static int fjes_open(struct net_device *netdev)
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{
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struct fjes_adapter *adapter = netdev_priv(netdev);
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struct fjes_hw *hw = &adapter->hw;
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int result;
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if (adapter->open_guard)
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return -ENXIO;
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result = fjes_setup_resources(adapter);
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if (result)
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goto err_setup_res;
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hw->txrx_stop_req_bit = 0;
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hw->epstop_req_bit = 0;
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napi_enable(&adapter->napi);
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fjes_hw_capture_interrupt_status(hw);
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result = fjes_request_irq(adapter);
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if (result)
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goto err_req_irq;
|
|
|
|
fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, false);
|
|
|
|
netif_tx_start_all_queues(netdev);
|
|
netif_carrier_on(netdev);
|
|
|
|
return 0;
|
|
|
|
err_req_irq:
|
|
fjes_free_irq(adapter);
|
|
napi_disable(&adapter->napi);
|
|
|
|
err_setup_res:
|
|
fjes_free_resources(adapter);
|
|
return result;
|
|
}
|
|
|
|
/* fjes_close - Disables a network interface */
|
|
static int fjes_close(struct net_device *netdev)
|
|
{
|
|
struct fjes_adapter *adapter = netdev_priv(netdev);
|
|
struct fjes_hw *hw = &adapter->hw;
|
|
unsigned long flags;
|
|
int epidx;
|
|
|
|
netif_tx_stop_all_queues(netdev);
|
|
netif_carrier_off(netdev);
|
|
|
|
fjes_hw_raise_epstop(hw);
|
|
|
|
napi_disable(&adapter->napi);
|
|
|
|
spin_lock_irqsave(&hw->rx_status_lock, flags);
|
|
for (epidx = 0; epidx < hw->max_epid; epidx++) {
|
|
if (epidx == hw->my_epid)
|
|
continue;
|
|
|
|
if (fjes_hw_get_partner_ep_status(hw, epidx) ==
|
|
EP_PARTNER_SHARED)
|
|
adapter->hw.ep_shm_info[epidx]
|
|
.tx.info->v1i.rx_status &=
|
|
~FJES_RX_POLL_WORK;
|
|
}
|
|
spin_unlock_irqrestore(&hw->rx_status_lock, flags);
|
|
|
|
fjes_free_irq(adapter);
|
|
|
|
cancel_delayed_work_sync(&adapter->interrupt_watch_task);
|
|
cancel_work_sync(&adapter->unshare_watch_task);
|
|
adapter->unshare_watch_bitmask = 0;
|
|
cancel_work_sync(&adapter->raise_intr_rxdata_task);
|
|
cancel_work_sync(&adapter->tx_stall_task);
|
|
|
|
cancel_work_sync(&hw->update_zone_task);
|
|
cancel_work_sync(&hw->epstop_task);
|
|
|
|
fjes_hw_wait_epstop(hw);
|
|
|
|
fjes_free_resources(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int fjes_tx_send(struct fjes_adapter *adapter, int dest,
|
|
void *data, size_t len)
|
|
{
|
|
int retval;
|
|
|
|
retval = fjes_hw_epbuf_tx_pkt_send(&adapter->hw.ep_shm_info[dest].tx,
|
|
data, len);
|
|
if (retval)
|
|
return retval;
|
|
|
|
adapter->hw.ep_shm_info[dest].tx.info->v1i.tx_status =
|
|
FJES_TX_DELAY_SEND_PENDING;
|
|
if (!work_pending(&adapter->raise_intr_rxdata_task))
|
|
queue_work(adapter->txrx_wq,
|
|
&adapter->raise_intr_rxdata_task);
|
|
|
|
retval = 0;
|
|
return retval;
|
|
}
|
|
|
|
static netdev_tx_t
|
|
fjes_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
|
|
{
|
|
struct fjes_adapter *adapter = netdev_priv(netdev);
|
|
struct fjes_hw *hw = &adapter->hw;
|
|
|
|
int max_epid, my_epid, dest_epid;
|
|
enum ep_partner_status pstatus;
|
|
struct netdev_queue *cur_queue;
|
|
char shortpkt[VLAN_ETH_HLEN];
|
|
bool is_multi, vlan;
|
|
struct ethhdr *eth;
|
|
u16 queue_no = 0;
|
|
u16 vlan_id = 0;
|
|
netdev_tx_t ret;
|
|
char *data;
|
|
int len;
|
|
|
|
ret = NETDEV_TX_OK;
|
|
is_multi = false;
|
|
cur_queue = netdev_get_tx_queue(netdev, queue_no);
|
|
|
|
eth = (struct ethhdr *)skb->data;
|
|
my_epid = hw->my_epid;
|
|
|
|
vlan = (vlan_get_tag(skb, &vlan_id) == 0) ? true : false;
|
|
|
|
data = skb->data;
|
|
len = skb->len;
|
|
|
|
if (is_multicast_ether_addr(eth->h_dest)) {
|
|
dest_epid = 0;
|
|
max_epid = hw->max_epid;
|
|
is_multi = true;
|
|
} else if (is_local_ether_addr(eth->h_dest)) {
|
|
dest_epid = eth->h_dest[ETH_ALEN - 1];
|
|
max_epid = dest_epid + 1;
|
|
|
|
if ((eth->h_dest[0] == 0x02) &&
|
|
(0x00 == (eth->h_dest[1] | eth->h_dest[2] |
|
|
eth->h_dest[3] | eth->h_dest[4])) &&
|
|
(dest_epid < hw->max_epid)) {
|
|
;
|
|
} else {
|
|
dest_epid = 0;
|
|
max_epid = 0;
|
|
ret = NETDEV_TX_OK;
|
|
|
|
adapter->stats64.tx_packets += 1;
|
|
hw->ep_shm_info[my_epid].net_stats.tx_packets += 1;
|
|
adapter->stats64.tx_bytes += len;
|
|
hw->ep_shm_info[my_epid].net_stats.tx_bytes += len;
|
|
}
|
|
} else {
|
|
dest_epid = 0;
|
|
max_epid = 0;
|
|
ret = NETDEV_TX_OK;
|
|
|
|
adapter->stats64.tx_packets += 1;
|
|
hw->ep_shm_info[my_epid].net_stats.tx_packets += 1;
|
|
adapter->stats64.tx_bytes += len;
|
|
hw->ep_shm_info[my_epid].net_stats.tx_bytes += len;
|
|
}
|
|
|
|
for (; dest_epid < max_epid; dest_epid++) {
|
|
if (my_epid == dest_epid)
|
|
continue;
|
|
|
|
pstatus = fjes_hw_get_partner_ep_status(hw, dest_epid);
|
|
if (pstatus != EP_PARTNER_SHARED) {
|
|
if (!is_multi)
|
|
hw->ep_shm_info[dest_epid].ep_stats
|
|
.tx_dropped_not_shared += 1;
|
|
ret = NETDEV_TX_OK;
|
|
} else if (!fjes_hw_check_epbuf_version(
|
|
&adapter->hw.ep_shm_info[dest_epid].rx, 0)) {
|
|
/* version is NOT 0 */
|
|
adapter->stats64.tx_carrier_errors += 1;
|
|
hw->ep_shm_info[dest_epid].net_stats
|
|
.tx_carrier_errors += 1;
|
|
hw->ep_shm_info[dest_epid].ep_stats
|
|
.tx_dropped_ver_mismatch += 1;
|
|
|
|
ret = NETDEV_TX_OK;
|
|
} else if (!fjes_hw_check_mtu(
|
|
&adapter->hw.ep_shm_info[dest_epid].rx,
|
|
netdev->mtu)) {
|
|
adapter->stats64.tx_dropped += 1;
|
|
hw->ep_shm_info[dest_epid].net_stats.tx_dropped += 1;
|
|
adapter->stats64.tx_errors += 1;
|
|
hw->ep_shm_info[dest_epid].net_stats.tx_errors += 1;
|
|
hw->ep_shm_info[dest_epid].ep_stats
|
|
.tx_dropped_buf_size_mismatch += 1;
|
|
|
|
ret = NETDEV_TX_OK;
|
|
} else if (vlan &&
|
|
!fjes_hw_check_vlan_id(
|
|
&adapter->hw.ep_shm_info[dest_epid].rx,
|
|
vlan_id)) {
|
|
hw->ep_shm_info[dest_epid].ep_stats
|
|
.tx_dropped_vlanid_mismatch += 1;
|
|
ret = NETDEV_TX_OK;
|
|
} else {
|
|
if (len < VLAN_ETH_HLEN) {
|
|
memset(shortpkt, 0, VLAN_ETH_HLEN);
|
|
memcpy(shortpkt, skb->data, skb->len);
|
|
len = VLAN_ETH_HLEN;
|
|
data = shortpkt;
|
|
}
|
|
|
|
if (adapter->tx_retry_count == 0) {
|
|
adapter->tx_start_jiffies = jiffies;
|
|
adapter->tx_retry_count = 1;
|
|
} else {
|
|
adapter->tx_retry_count++;
|
|
}
|
|
|
|
if (fjes_tx_send(adapter, dest_epid, data, len)) {
|
|
if (is_multi) {
|
|
ret = NETDEV_TX_OK;
|
|
} else if (
|
|
((long)jiffies -
|
|
(long)adapter->tx_start_jiffies) >=
|
|
FJES_TX_RETRY_TIMEOUT) {
|
|
adapter->stats64.tx_fifo_errors += 1;
|
|
hw->ep_shm_info[dest_epid].net_stats
|
|
.tx_fifo_errors += 1;
|
|
adapter->stats64.tx_errors += 1;
|
|
hw->ep_shm_info[dest_epid].net_stats
|
|
.tx_errors += 1;
|
|
|
|
ret = NETDEV_TX_OK;
|
|
} else {
|
|
netif_trans_update(netdev);
|
|
hw->ep_shm_info[dest_epid].ep_stats
|
|
.tx_buffer_full += 1;
|
|
netif_tx_stop_queue(cur_queue);
|
|
|
|
if (!work_pending(&adapter->tx_stall_task))
|
|
queue_work(adapter->txrx_wq,
|
|
&adapter->tx_stall_task);
|
|
|
|
ret = NETDEV_TX_BUSY;
|
|
}
|
|
} else {
|
|
if (!is_multi) {
|
|
adapter->stats64.tx_packets += 1;
|
|
hw->ep_shm_info[dest_epid].net_stats
|
|
.tx_packets += 1;
|
|
adapter->stats64.tx_bytes += len;
|
|
hw->ep_shm_info[dest_epid].net_stats
|
|
.tx_bytes += len;
|
|
}
|
|
|
|
adapter->tx_retry_count = 0;
|
|
ret = NETDEV_TX_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ret == NETDEV_TX_OK) {
|
|
dev_kfree_skb(skb);
|
|
if (is_multi) {
|
|
adapter->stats64.tx_packets += 1;
|
|
hw->ep_shm_info[my_epid].net_stats.tx_packets += 1;
|
|
adapter->stats64.tx_bytes += 1;
|
|
hw->ep_shm_info[my_epid].net_stats.tx_bytes += len;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
fjes_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats)
|
|
{
|
|
struct fjes_adapter *adapter = netdev_priv(netdev);
|
|
|
|
memcpy(stats, &adapter->stats64, sizeof(struct rtnl_link_stats64));
|
|
}
|
|
|
|
static int fjes_change_mtu(struct net_device *netdev, int new_mtu)
|
|
{
|
|
struct fjes_adapter *adapter = netdev_priv(netdev);
|
|
bool running = netif_running(netdev);
|
|
struct fjes_hw *hw = &adapter->hw;
|
|
unsigned long flags;
|
|
int ret = -EINVAL;
|
|
int idx, epidx;
|
|
|
|
for (idx = 0; fjes_support_mtu[idx] != 0; idx++) {
|
|
if (new_mtu <= fjes_support_mtu[idx]) {
|
|
new_mtu = fjes_support_mtu[idx];
|
|
if (new_mtu == netdev->mtu)
|
|
return 0;
|
|
|
|
ret = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (running) {
|
|
spin_lock_irqsave(&hw->rx_status_lock, flags);
|
|
for (epidx = 0; epidx < hw->max_epid; epidx++) {
|
|
if (epidx == hw->my_epid)
|
|
continue;
|
|
hw->ep_shm_info[epidx].tx.info->v1i.rx_status &=
|
|
~FJES_RX_MTU_CHANGING_DONE;
|
|
}
|
|
spin_unlock_irqrestore(&hw->rx_status_lock, flags);
|
|
|
|
netif_tx_stop_all_queues(netdev);
|
|
netif_carrier_off(netdev);
|
|
cancel_work_sync(&adapter->tx_stall_task);
|
|
napi_disable(&adapter->napi);
|
|
|
|
msleep(1000);
|
|
|
|
netif_tx_stop_all_queues(netdev);
|
|
}
|
|
|
|
netdev->mtu = new_mtu;
|
|
|
|
if (running) {
|
|
for (epidx = 0; epidx < hw->max_epid; epidx++) {
|
|
if (epidx == hw->my_epid)
|
|
continue;
|
|
|
|
spin_lock_irqsave(&hw->rx_status_lock, flags);
|
|
fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx,
|
|
netdev->dev_addr,
|
|
netdev->mtu);
|
|
|
|
hw->ep_shm_info[epidx].tx.info->v1i.rx_status |=
|
|
FJES_RX_MTU_CHANGING_DONE;
|
|
spin_unlock_irqrestore(&hw->rx_status_lock, flags);
|
|
}
|
|
|
|
netif_tx_wake_all_queues(netdev);
|
|
netif_carrier_on(netdev);
|
|
napi_enable(&adapter->napi);
|
|
napi_schedule(&adapter->napi);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void fjes_tx_retry(struct net_device *netdev, unsigned int txqueue)
|
|
{
|
|
struct netdev_queue *queue = netdev_get_tx_queue(netdev, 0);
|
|
|
|
netif_tx_wake_queue(queue);
|
|
}
|
|
|
|
static int fjes_vlan_rx_add_vid(struct net_device *netdev,
|
|
__be16 proto, u16 vid)
|
|
{
|
|
struct fjes_adapter *adapter = netdev_priv(netdev);
|
|
bool ret = true;
|
|
int epid;
|
|
|
|
for (epid = 0; epid < adapter->hw.max_epid; epid++) {
|
|
if (epid == adapter->hw.my_epid)
|
|
continue;
|
|
|
|
if (!fjes_hw_check_vlan_id(
|
|
&adapter->hw.ep_shm_info[epid].tx, vid))
|
|
ret = fjes_hw_set_vlan_id(
|
|
&adapter->hw.ep_shm_info[epid].tx, vid);
|
|
}
|
|
|
|
return ret ? 0 : -ENOSPC;
|
|
}
|
|
|
|
static int fjes_vlan_rx_kill_vid(struct net_device *netdev,
|
|
__be16 proto, u16 vid)
|
|
{
|
|
struct fjes_adapter *adapter = netdev_priv(netdev);
|
|
int epid;
|
|
|
|
for (epid = 0; epid < adapter->hw.max_epid; epid++) {
|
|
if (epid == adapter->hw.my_epid)
|
|
continue;
|
|
|
|
fjes_hw_del_vlan_id(&adapter->hw.ep_shm_info[epid].tx, vid);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct net_device_ops fjes_netdev_ops = {
|
|
.ndo_open = fjes_open,
|
|
.ndo_stop = fjes_close,
|
|
.ndo_start_xmit = fjes_xmit_frame,
|
|
.ndo_get_stats64 = fjes_get_stats64,
|
|
.ndo_change_mtu = fjes_change_mtu,
|
|
.ndo_tx_timeout = fjes_tx_retry,
|
|
.ndo_vlan_rx_add_vid = fjes_vlan_rx_add_vid,
|
|
.ndo_vlan_rx_kill_vid = fjes_vlan_rx_kill_vid,
|
|
};
|
|
|
|
/* fjes_netdev_setup - netdevice initialization routine */
|
|
static void fjes_netdev_setup(struct net_device *netdev)
|
|
{
|
|
ether_setup(netdev);
|
|
|
|
netdev->watchdog_timeo = FJES_TX_RETRY_INTERVAL;
|
|
netdev->netdev_ops = &fjes_netdev_ops;
|
|
fjes_set_ethtool_ops(netdev);
|
|
netdev->mtu = fjes_support_mtu[3];
|
|
netdev->min_mtu = fjes_support_mtu[0];
|
|
netdev->max_mtu = fjes_support_mtu[3];
|
|
netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
|
|
}
|
|
|
|
static int fjes_rxframe_search_exist(struct fjes_adapter *adapter,
|
|
int start_epid)
|
|
{
|
|
struct fjes_hw *hw = &adapter->hw;
|
|
enum ep_partner_status pstatus;
|
|
int max_epid, cur_epid;
|
|
int i;
|
|
|
|
max_epid = hw->max_epid;
|
|
start_epid = (start_epid + 1 + max_epid) % max_epid;
|
|
|
|
for (i = 0; i < max_epid; i++) {
|
|
cur_epid = (start_epid + i) % max_epid;
|
|
if (cur_epid == hw->my_epid)
|
|
continue;
|
|
|
|
pstatus = fjes_hw_get_partner_ep_status(hw, cur_epid);
|
|
if (pstatus == EP_PARTNER_SHARED) {
|
|
if (!fjes_hw_epbuf_rx_is_empty(
|
|
&hw->ep_shm_info[cur_epid].rx))
|
|
return cur_epid;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void *fjes_rxframe_get(struct fjes_adapter *adapter, size_t *psize,
|
|
int *cur_epid)
|
|
{
|
|
void *frame;
|
|
|
|
*cur_epid = fjes_rxframe_search_exist(adapter, *cur_epid);
|
|
if (*cur_epid < 0)
|
|
return NULL;
|
|
|
|
frame =
|
|
fjes_hw_epbuf_rx_curpkt_get_addr(
|
|
&adapter->hw.ep_shm_info[*cur_epid].rx, psize);
|
|
|
|
return frame;
|
|
}
|
|
|
|
static void fjes_rxframe_release(struct fjes_adapter *adapter, int cur_epid)
|
|
{
|
|
fjes_hw_epbuf_rx_curpkt_drop(&adapter->hw.ep_shm_info[cur_epid].rx);
|
|
}
|
|
|
|
static int fjes_poll(struct napi_struct *napi, int budget)
|
|
{
|
|
struct fjes_adapter *adapter =
|
|
container_of(napi, struct fjes_adapter, napi);
|
|
struct net_device *netdev = napi->dev;
|
|
struct fjes_hw *hw = &adapter->hw;
|
|
struct sk_buff *skb;
|
|
int work_done = 0;
|
|
int cur_epid = 0;
|
|
int epidx;
|
|
size_t frame_len;
|
|
void *frame;
|
|
|
|
spin_lock(&hw->rx_status_lock);
|
|
for (epidx = 0; epidx < hw->max_epid; epidx++) {
|
|
if (epidx == hw->my_epid)
|
|
continue;
|
|
|
|
if (fjes_hw_get_partner_ep_status(hw, epidx) ==
|
|
EP_PARTNER_SHARED)
|
|
adapter->hw.ep_shm_info[epidx]
|
|
.tx.info->v1i.rx_status |= FJES_RX_POLL_WORK;
|
|
}
|
|
spin_unlock(&hw->rx_status_lock);
|
|
|
|
while (work_done < budget) {
|
|
prefetch(&adapter->hw);
|
|
frame = fjes_rxframe_get(adapter, &frame_len, &cur_epid);
|
|
|
|
if (frame) {
|
|
skb = napi_alloc_skb(napi, frame_len);
|
|
if (!skb) {
|
|
adapter->stats64.rx_dropped += 1;
|
|
hw->ep_shm_info[cur_epid].net_stats
|
|
.rx_dropped += 1;
|
|
adapter->stats64.rx_errors += 1;
|
|
hw->ep_shm_info[cur_epid].net_stats
|
|
.rx_errors += 1;
|
|
} else {
|
|
skb_put_data(skb, frame, frame_len);
|
|
skb->protocol = eth_type_trans(skb, netdev);
|
|
skb->ip_summed = CHECKSUM_UNNECESSARY;
|
|
|
|
netif_receive_skb(skb);
|
|
|
|
work_done++;
|
|
|
|
adapter->stats64.rx_packets += 1;
|
|
hw->ep_shm_info[cur_epid].net_stats
|
|
.rx_packets += 1;
|
|
adapter->stats64.rx_bytes += frame_len;
|
|
hw->ep_shm_info[cur_epid].net_stats
|
|
.rx_bytes += frame_len;
|
|
|
|
if (is_multicast_ether_addr(
|
|
((struct ethhdr *)frame)->h_dest)) {
|
|
adapter->stats64.multicast += 1;
|
|
hw->ep_shm_info[cur_epid].net_stats
|
|
.multicast += 1;
|
|
}
|
|
}
|
|
|
|
fjes_rxframe_release(adapter, cur_epid);
|
|
adapter->unset_rx_last = true;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (work_done < budget) {
|
|
napi_complete_done(napi, work_done);
|
|
|
|
if (adapter->unset_rx_last) {
|
|
adapter->rx_last_jiffies = jiffies;
|
|
adapter->unset_rx_last = false;
|
|
}
|
|
|
|
if (((long)jiffies - (long)adapter->rx_last_jiffies) < 3) {
|
|
napi_reschedule(napi);
|
|
} else {
|
|
spin_lock(&hw->rx_status_lock);
|
|
for (epidx = 0; epidx < hw->max_epid; epidx++) {
|
|
if (epidx == hw->my_epid)
|
|
continue;
|
|
if (fjes_hw_get_partner_ep_status(hw, epidx) ==
|
|
EP_PARTNER_SHARED)
|
|
adapter->hw.ep_shm_info[epidx].tx
|
|
.info->v1i.rx_status &=
|
|
~FJES_RX_POLL_WORK;
|
|
}
|
|
spin_unlock(&hw->rx_status_lock);
|
|
|
|
fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, false);
|
|
}
|
|
}
|
|
|
|
return work_done;
|
|
}
|
|
|
|
static int fjes_sw_init(struct fjes_adapter *adapter)
|
|
{
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
netif_napi_add(netdev, &adapter->napi, fjes_poll);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fjes_force_close_task(struct work_struct *work)
|
|
{
|
|
struct fjes_adapter *adapter = container_of(work,
|
|
struct fjes_adapter, force_close_task);
|
|
struct net_device *netdev = adapter->netdev;
|
|
|
|
rtnl_lock();
|
|
dev_close(netdev);
|
|
rtnl_unlock();
|
|
}
|
|
|
|
static void fjes_tx_stall_task(struct work_struct *work)
|
|
{
|
|
struct fjes_adapter *adapter = container_of(work,
|
|
struct fjes_adapter, tx_stall_task);
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct fjes_hw *hw = &adapter->hw;
|
|
int all_queue_available, sendable;
|
|
enum ep_partner_status pstatus;
|
|
int max_epid, my_epid, epid;
|
|
union ep_buffer_info *info;
|
|
int i;
|
|
|
|
if (((long)jiffies -
|
|
dev_trans_start(netdev)) > FJES_TX_TX_STALL_TIMEOUT) {
|
|
netif_wake_queue(netdev);
|
|
return;
|
|
}
|
|
|
|
my_epid = hw->my_epid;
|
|
max_epid = hw->max_epid;
|
|
|
|
for (i = 0; i < 5; i++) {
|
|
all_queue_available = 1;
|
|
|
|
for (epid = 0; epid < max_epid; epid++) {
|
|
if (my_epid == epid)
|
|
continue;
|
|
|
|
pstatus = fjes_hw_get_partner_ep_status(hw, epid);
|
|
sendable = (pstatus == EP_PARTNER_SHARED);
|
|
if (!sendable)
|
|
continue;
|
|
|
|
info = adapter->hw.ep_shm_info[epid].tx.info;
|
|
|
|
if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE))
|
|
return;
|
|
|
|
if (EP_RING_FULL(info->v1i.head, info->v1i.tail,
|
|
info->v1i.count_max)) {
|
|
all_queue_available = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (all_queue_available) {
|
|
netif_wake_queue(netdev);
|
|
return;
|
|
}
|
|
}
|
|
|
|
usleep_range(50, 100);
|
|
|
|
queue_work(adapter->txrx_wq, &adapter->tx_stall_task);
|
|
}
|
|
|
|
static void fjes_raise_intr_rxdata_task(struct work_struct *work)
|
|
{
|
|
struct fjes_adapter *adapter = container_of(work,
|
|
struct fjes_adapter, raise_intr_rxdata_task);
|
|
struct fjes_hw *hw = &adapter->hw;
|
|
enum ep_partner_status pstatus;
|
|
int max_epid, my_epid, epid;
|
|
|
|
my_epid = hw->my_epid;
|
|
max_epid = hw->max_epid;
|
|
|
|
for (epid = 0; epid < max_epid; epid++)
|
|
hw->ep_shm_info[epid].tx_status_work = 0;
|
|
|
|
for (epid = 0; epid < max_epid; epid++) {
|
|
if (epid == my_epid)
|
|
continue;
|
|
|
|
pstatus = fjes_hw_get_partner_ep_status(hw, epid);
|
|
if (pstatus == EP_PARTNER_SHARED) {
|
|
hw->ep_shm_info[epid].tx_status_work =
|
|
hw->ep_shm_info[epid].tx.info->v1i.tx_status;
|
|
|
|
if (hw->ep_shm_info[epid].tx_status_work ==
|
|
FJES_TX_DELAY_SEND_PENDING) {
|
|
hw->ep_shm_info[epid].tx.info->v1i.tx_status =
|
|
FJES_TX_DELAY_SEND_NONE;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (epid = 0; epid < max_epid; epid++) {
|
|
if (epid == my_epid)
|
|
continue;
|
|
|
|
pstatus = fjes_hw_get_partner_ep_status(hw, epid);
|
|
if ((hw->ep_shm_info[epid].tx_status_work ==
|
|
FJES_TX_DELAY_SEND_PENDING) &&
|
|
(pstatus == EP_PARTNER_SHARED) &&
|
|
!(hw->ep_shm_info[epid].rx.info->v1i.rx_status &
|
|
FJES_RX_POLL_WORK)) {
|
|
fjes_hw_raise_interrupt(hw, epid,
|
|
REG_ICTL_MASK_RX_DATA);
|
|
hw->ep_shm_info[epid].ep_stats.send_intr_rx += 1;
|
|
}
|
|
}
|
|
|
|
usleep_range(500, 1000);
|
|
}
|
|
|
|
static void fjes_watch_unshare_task(struct work_struct *work)
|
|
{
|
|
struct fjes_adapter *adapter =
|
|
container_of(work, struct fjes_adapter, unshare_watch_task);
|
|
|
|
struct net_device *netdev = adapter->netdev;
|
|
struct fjes_hw *hw = &adapter->hw;
|
|
|
|
int unshare_watch, unshare_reserve;
|
|
int max_epid, my_epid, epidx;
|
|
int stop_req, stop_req_done;
|
|
ulong unshare_watch_bitmask;
|
|
unsigned long flags;
|
|
int wait_time = 0;
|
|
int is_shared;
|
|
int ret;
|
|
|
|
my_epid = hw->my_epid;
|
|
max_epid = hw->max_epid;
|
|
|
|
unshare_watch_bitmask = adapter->unshare_watch_bitmask;
|
|
adapter->unshare_watch_bitmask = 0;
|
|
|
|
while ((unshare_watch_bitmask || hw->txrx_stop_req_bit) &&
|
|
(wait_time < 3000)) {
|
|
for (epidx = 0; epidx < max_epid; epidx++) {
|
|
if (epidx == my_epid)
|
|
continue;
|
|
|
|
is_shared = fjes_hw_epid_is_shared(hw->hw_info.share,
|
|
epidx);
|
|
|
|
stop_req = test_bit(epidx, &hw->txrx_stop_req_bit);
|
|
|
|
stop_req_done = hw->ep_shm_info[epidx].rx.info->v1i.rx_status &
|
|
FJES_RX_STOP_REQ_DONE;
|
|
|
|
unshare_watch = test_bit(epidx, &unshare_watch_bitmask);
|
|
|
|
unshare_reserve = test_bit(epidx,
|
|
&hw->hw_info.buffer_unshare_reserve_bit);
|
|
|
|
if ((!stop_req ||
|
|
(is_shared && (!is_shared || !stop_req_done))) &&
|
|
(is_shared || !unshare_watch || !unshare_reserve))
|
|
continue;
|
|
|
|
mutex_lock(&hw->hw_info.lock);
|
|
ret = fjes_hw_unregister_buff_addr(hw, epidx);
|
|
switch (ret) {
|
|
case 0:
|
|
break;
|
|
case -ENOMSG:
|
|
case -EBUSY:
|
|
default:
|
|
if (!work_pending(
|
|
&adapter->force_close_task)) {
|
|
adapter->force_reset = true;
|
|
schedule_work(
|
|
&adapter->force_close_task);
|
|
}
|
|
break;
|
|
}
|
|
mutex_unlock(&hw->hw_info.lock);
|
|
hw->ep_shm_info[epidx].ep_stats
|
|
.com_unregist_buf_exec += 1;
|
|
|
|
spin_lock_irqsave(&hw->rx_status_lock, flags);
|
|
fjes_hw_setup_epbuf(&hw->ep_shm_info[epidx].tx,
|
|
netdev->dev_addr, netdev->mtu);
|
|
spin_unlock_irqrestore(&hw->rx_status_lock, flags);
|
|
|
|
clear_bit(epidx, &hw->txrx_stop_req_bit);
|
|
clear_bit(epidx, &unshare_watch_bitmask);
|
|
clear_bit(epidx,
|
|
&hw->hw_info.buffer_unshare_reserve_bit);
|
|
}
|
|
|
|
msleep(100);
|
|
wait_time += 100;
|
|
}
|
|
|
|
if (hw->hw_info.buffer_unshare_reserve_bit) {
|
|
for (epidx = 0; epidx < max_epid; epidx++) {
|
|
if (epidx == my_epid)
|
|
continue;
|
|
|
|
if (test_bit(epidx,
|
|
&hw->hw_info.buffer_unshare_reserve_bit)) {
|
|
mutex_lock(&hw->hw_info.lock);
|
|
|
|
ret = fjes_hw_unregister_buff_addr(hw, epidx);
|
|
switch (ret) {
|
|
case 0:
|
|
break;
|
|
case -ENOMSG:
|
|
case -EBUSY:
|
|
default:
|
|
if (!work_pending(
|
|
&adapter->force_close_task)) {
|
|
adapter->force_reset = true;
|
|
schedule_work(
|
|
&adapter->force_close_task);
|
|
}
|
|
break;
|
|
}
|
|
mutex_unlock(&hw->hw_info.lock);
|
|
|
|
hw->ep_shm_info[epidx].ep_stats
|
|
.com_unregist_buf_exec += 1;
|
|
|
|
spin_lock_irqsave(&hw->rx_status_lock, flags);
|
|
fjes_hw_setup_epbuf(
|
|
&hw->ep_shm_info[epidx].tx,
|
|
netdev->dev_addr, netdev->mtu);
|
|
spin_unlock_irqrestore(&hw->rx_status_lock,
|
|
flags);
|
|
|
|
clear_bit(epidx, &hw->txrx_stop_req_bit);
|
|
clear_bit(epidx, &unshare_watch_bitmask);
|
|
clear_bit(epidx, &hw->hw_info.buffer_unshare_reserve_bit);
|
|
}
|
|
|
|
if (test_bit(epidx, &unshare_watch_bitmask)) {
|
|
spin_lock_irqsave(&hw->rx_status_lock, flags);
|
|
hw->ep_shm_info[epidx].tx.info->v1i.rx_status &=
|
|
~FJES_RX_STOP_REQ_DONE;
|
|
spin_unlock_irqrestore(&hw->rx_status_lock,
|
|
flags);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void fjes_irq_watch_task(struct work_struct *work)
|
|
{
|
|
struct fjes_adapter *adapter = container_of(to_delayed_work(work),
|
|
struct fjes_adapter, interrupt_watch_task);
|
|
|
|
local_irq_disable();
|
|
fjes_intr(adapter->hw.hw_res.irq, adapter);
|
|
local_irq_enable();
|
|
|
|
if (fjes_rxframe_search_exist(adapter, 0) >= 0)
|
|
napi_schedule(&adapter->napi);
|
|
|
|
if (adapter->interrupt_watch_enable) {
|
|
if (!delayed_work_pending(&adapter->interrupt_watch_task))
|
|
queue_delayed_work(adapter->control_wq,
|
|
&adapter->interrupt_watch_task,
|
|
FJES_IRQ_WATCH_DELAY);
|
|
}
|
|
}
|
|
|
|
/* fjes_probe - Device Initialization Routine */
|
|
static int fjes_probe(struct platform_device *plat_dev)
|
|
{
|
|
struct fjes_adapter *adapter;
|
|
struct net_device *netdev;
|
|
struct resource *res;
|
|
struct fjes_hw *hw;
|
|
u8 addr[ETH_ALEN];
|
|
int err;
|
|
|
|
err = -ENOMEM;
|
|
netdev = alloc_netdev_mq(sizeof(struct fjes_adapter), "es%d",
|
|
NET_NAME_UNKNOWN, fjes_netdev_setup,
|
|
FJES_MAX_QUEUES);
|
|
|
|
if (!netdev)
|
|
goto err_out;
|
|
|
|
SET_NETDEV_DEV(netdev, &plat_dev->dev);
|
|
|
|
dev_set_drvdata(&plat_dev->dev, netdev);
|
|
adapter = netdev_priv(netdev);
|
|
adapter->netdev = netdev;
|
|
adapter->plat_dev = plat_dev;
|
|
hw = &adapter->hw;
|
|
hw->back = adapter;
|
|
|
|
/* setup the private structure */
|
|
err = fjes_sw_init(adapter);
|
|
if (err)
|
|
goto err_free_netdev;
|
|
|
|
INIT_WORK(&adapter->force_close_task, fjes_force_close_task);
|
|
adapter->force_reset = false;
|
|
adapter->open_guard = false;
|
|
|
|
adapter->txrx_wq = alloc_workqueue(DRV_NAME "/txrx", WQ_MEM_RECLAIM, 0);
|
|
if (unlikely(!adapter->txrx_wq)) {
|
|
err = -ENOMEM;
|
|
goto err_free_netdev;
|
|
}
|
|
|
|
adapter->control_wq = alloc_workqueue(DRV_NAME "/control",
|
|
WQ_MEM_RECLAIM, 0);
|
|
if (unlikely(!adapter->control_wq)) {
|
|
err = -ENOMEM;
|
|
goto err_free_txrx_wq;
|
|
}
|
|
|
|
INIT_WORK(&adapter->tx_stall_task, fjes_tx_stall_task);
|
|
INIT_WORK(&adapter->raise_intr_rxdata_task,
|
|
fjes_raise_intr_rxdata_task);
|
|
INIT_WORK(&adapter->unshare_watch_task, fjes_watch_unshare_task);
|
|
adapter->unshare_watch_bitmask = 0;
|
|
|
|
INIT_DELAYED_WORK(&adapter->interrupt_watch_task, fjes_irq_watch_task);
|
|
adapter->interrupt_watch_enable = false;
|
|
|
|
res = platform_get_resource(plat_dev, IORESOURCE_MEM, 0);
|
|
if (!res) {
|
|
err = -EINVAL;
|
|
goto err_free_control_wq;
|
|
}
|
|
hw->hw_res.start = res->start;
|
|
hw->hw_res.size = resource_size(res);
|
|
hw->hw_res.irq = platform_get_irq(plat_dev, 0);
|
|
if (hw->hw_res.irq < 0) {
|
|
err = hw->hw_res.irq;
|
|
goto err_free_control_wq;
|
|
}
|
|
|
|
err = fjes_hw_init(&adapter->hw);
|
|
if (err)
|
|
goto err_free_control_wq;
|
|
|
|
/* setup MAC address (02:00:00:00:00:[epid])*/
|
|
addr[0] = 2;
|
|
addr[1] = 0;
|
|
addr[2] = 0;
|
|
addr[3] = 0;
|
|
addr[4] = 0;
|
|
addr[5] = hw->my_epid; /* EPID */
|
|
eth_hw_addr_set(netdev, addr);
|
|
|
|
err = register_netdev(netdev);
|
|
if (err)
|
|
goto err_hw_exit;
|
|
|
|
netif_carrier_off(netdev);
|
|
|
|
fjes_dbg_adapter_init(adapter);
|
|
|
|
return 0;
|
|
|
|
err_hw_exit:
|
|
fjes_hw_exit(&adapter->hw);
|
|
err_free_control_wq:
|
|
destroy_workqueue(adapter->control_wq);
|
|
err_free_txrx_wq:
|
|
destroy_workqueue(adapter->txrx_wq);
|
|
err_free_netdev:
|
|
free_netdev(netdev);
|
|
err_out:
|
|
return err;
|
|
}
|
|
|
|
/* fjes_remove - Device Removal Routine */
|
|
static int fjes_remove(struct platform_device *plat_dev)
|
|
{
|
|
struct net_device *netdev = dev_get_drvdata(&plat_dev->dev);
|
|
struct fjes_adapter *adapter = netdev_priv(netdev);
|
|
struct fjes_hw *hw = &adapter->hw;
|
|
|
|
fjes_dbg_adapter_exit(adapter);
|
|
|
|
cancel_delayed_work_sync(&adapter->interrupt_watch_task);
|
|
cancel_work_sync(&adapter->unshare_watch_task);
|
|
cancel_work_sync(&adapter->raise_intr_rxdata_task);
|
|
cancel_work_sync(&adapter->tx_stall_task);
|
|
if (adapter->control_wq)
|
|
destroy_workqueue(adapter->control_wq);
|
|
if (adapter->txrx_wq)
|
|
destroy_workqueue(adapter->txrx_wq);
|
|
|
|
unregister_netdev(netdev);
|
|
|
|
fjes_hw_exit(hw);
|
|
|
|
netif_napi_del(&adapter->napi);
|
|
|
|
free_netdev(netdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver fjes_driver = {
|
|
.driver = {
|
|
.name = DRV_NAME,
|
|
},
|
|
.probe = fjes_probe,
|
|
.remove = fjes_remove,
|
|
};
|
|
|
|
static acpi_status
|
|
acpi_find_extended_socket_device(acpi_handle obj_handle, u32 level,
|
|
void *context, void **return_value)
|
|
{
|
|
struct acpi_device *device;
|
|
bool *found = context;
|
|
|
|
device = acpi_fetch_acpi_dev(obj_handle);
|
|
if (!device)
|
|
return AE_OK;
|
|
|
|
if (strcmp(acpi_device_hid(device), ACPI_MOTHERBOARD_RESOURCE_HID))
|
|
return AE_OK;
|
|
|
|
if (!is_extended_socket_device(device))
|
|
return AE_OK;
|
|
|
|
if (acpi_check_extended_socket_status(device))
|
|
return AE_OK;
|
|
|
|
*found = true;
|
|
return AE_CTRL_TERMINATE;
|
|
}
|
|
|
|
/* fjes_init_module - Driver Registration Routine */
|
|
static int __init fjes_init_module(void)
|
|
{
|
|
bool found = false;
|
|
int result;
|
|
|
|
acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX,
|
|
acpi_find_extended_socket_device, NULL, &found,
|
|
NULL);
|
|
|
|
if (!found)
|
|
return -ENODEV;
|
|
|
|
pr_info("%s - version %s - %s\n",
|
|
fjes_driver_string, fjes_driver_version, fjes_copyright);
|
|
|
|
fjes_dbg_init();
|
|
|
|
result = platform_driver_register(&fjes_driver);
|
|
if (result < 0) {
|
|
fjes_dbg_exit();
|
|
return result;
|
|
}
|
|
|
|
result = acpi_bus_register_driver(&fjes_acpi_driver);
|
|
if (result < 0)
|
|
goto fail_acpi_driver;
|
|
|
|
return 0;
|
|
|
|
fail_acpi_driver:
|
|
platform_driver_unregister(&fjes_driver);
|
|
fjes_dbg_exit();
|
|
return result;
|
|
}
|
|
|
|
module_init(fjes_init_module);
|
|
|
|
/* fjes_exit_module - Driver Exit Cleanup Routine */
|
|
static void __exit fjes_exit_module(void)
|
|
{
|
|
acpi_bus_unregister_driver(&fjes_acpi_driver);
|
|
platform_driver_unregister(&fjes_driver);
|
|
fjes_dbg_exit();
|
|
}
|
|
|
|
module_exit(fjes_exit_module);
|