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1575 lines
39 KiB
1575 lines
39 KiB
// 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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|
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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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|
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#include "fjes.h" |
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#include "fjes_trace.h" |
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|
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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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|
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MODULE_AUTHOR("Taku Izumi <[email protected]>"); |
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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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|
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#define ACPI_MOTHERBOARD_RESOURCE_HID "PNP0C02" |
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static int fjes_request_irq(struct fjes_adapter *); |
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static void fjes_free_irq(struct fjes_adapter *); |
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static int fjes_open(struct net_device *); |
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static int fjes_close(struct net_device *); |
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static int fjes_setup_resources(struct fjes_adapter *); |
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static void fjes_free_resources(struct fjes_adapter *); |
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static netdev_tx_t fjes_xmit_frame(struct sk_buff *, struct net_device *); |
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static void fjes_raise_intr_rxdata_task(struct work_struct *); |
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static void fjes_tx_stall_task(struct work_struct *); |
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static void fjes_force_close_task(struct work_struct *); |
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static irqreturn_t fjes_intr(int, void*); |
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static void fjes_get_stats64(struct net_device *, struct rtnl_link_stats64 *); |
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static int fjes_change_mtu(struct net_device *, int); |
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static int fjes_vlan_rx_add_vid(struct net_device *, __be16 proto, u16); |
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static int fjes_vlan_rx_kill_vid(struct net_device *, __be16 proto, u16); |
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static void fjes_tx_retry(struct net_device *, unsigned int txqueue); |
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static int fjes_acpi_add(struct acpi_device *); |
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static int fjes_acpi_remove(struct acpi_device *); |
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static acpi_status fjes_get_acpi_resource(struct acpi_resource *, void*); |
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static int fjes_probe(struct platform_device *); |
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static int fjes_remove(struct platform_device *); |
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static int fjes_sw_init(struct fjes_adapter *); |
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static void fjes_netdev_setup(struct net_device *); |
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static void fjes_irq_watch_task(struct work_struct *); |
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static void fjes_watch_unshare_task(struct work_struct *); |
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static void fjes_rx_irq(struct fjes_adapter *, int); |
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static int fjes_poll(struct napi_struct *, int); |
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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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|
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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 struct platform_driver fjes_driver = { |
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.driver = { |
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.name = DRV_NAME, |
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}, |
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.probe = fjes_probe, |
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.remove = fjes_remove, |
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}; |
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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 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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|
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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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|
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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 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 int 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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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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|
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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 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 const struct net_device_ops fjes_netdev_ops = { |
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.ndo_open = fjes_open, |
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.ndo_stop = fjes_close, |
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.ndo_start_xmit = fjes_xmit_frame, |
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.ndo_get_stats64 = fjes_get_stats64, |
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.ndo_change_mtu = fjes_change_mtu, |
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.ndo_tx_timeout = fjes_tx_retry, |
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.ndo_vlan_rx_add_vid = fjes_vlan_rx_add_vid, |
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.ndo_vlan_rx_kill_vid = fjes_vlan_rx_kill_vid, |
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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; |
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fjes_hw_set_irqmask(hw, REG_ICTL_MASK_ALL, false); |
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netif_tx_start_all_queues(netdev); |
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netif_carrier_on(netdev); |
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return 0; |
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err_req_irq: |
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fjes_free_irq(adapter); |
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napi_disable(&adapter->napi); |
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err_setup_res: |
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fjes_free_resources(adapter); |
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return result; |
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} |
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/* fjes_close - Disables a network interface */ |
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static int fjes_close(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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unsigned long flags; |
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int epidx; |
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netif_tx_stop_all_queues(netdev); |
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netif_carrier_off(netdev); |
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fjes_hw_raise_epstop(hw); |
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napi_disable(&adapter->napi); |
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spin_lock_irqsave(&hw->rx_status_lock, flags); |
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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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if (fjes_hw_get_partner_ep_status(hw, epidx) == |
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EP_PARTNER_SHARED) |
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adapter->hw.ep_shm_info[epidx] |
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.tx.info->v1i.rx_status &= |
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~FJES_RX_POLL_WORK; |
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} |
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spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
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fjes_free_irq(adapter); |
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cancel_delayed_work_sync(&adapter->interrupt_watch_task); |
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cancel_work_sync(&adapter->unshare_watch_task); |
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adapter->unshare_watch_bitmask = 0; |
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cancel_work_sync(&adapter->raise_intr_rxdata_task); |
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cancel_work_sync(&adapter->tx_stall_task); |
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cancel_work_sync(&hw->update_zone_task); |
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cancel_work_sync(&hw->epstop_task); |
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fjes_hw_wait_epstop(hw); |
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fjes_free_resources(adapter); |
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return 0; |
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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_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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|
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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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|
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fjes_hw_init_command_registers(hw, ¶m); |
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} |
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} |
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static void fjes_tx_stall_task(struct work_struct *work) |
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{ |
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struct fjes_adapter *adapter = container_of(work, |
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struct fjes_adapter, tx_stall_task); |
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struct net_device *netdev = adapter->netdev; |
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struct fjes_hw *hw = &adapter->hw; |
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int all_queue_available, sendable; |
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enum ep_partner_status pstatus; |
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int max_epid, my_epid, epid; |
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union ep_buffer_info *info; |
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int i; |
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|
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if (((long)jiffies - |
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dev_trans_start(netdev)) > FJES_TX_TX_STALL_TIMEOUT) { |
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netif_wake_queue(netdev); |
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return; |
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} |
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|
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my_epid = hw->my_epid; |
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max_epid = hw->max_epid; |
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|
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for (i = 0; i < 5; i++) { |
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all_queue_available = 1; |
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|
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for (epid = 0; epid < max_epid; epid++) { |
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if (my_epid == epid) |
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continue; |
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|
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pstatus = fjes_hw_get_partner_ep_status(hw, epid); |
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sendable = (pstatus == EP_PARTNER_SHARED); |
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if (!sendable) |
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continue; |
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|
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info = adapter->hw.ep_shm_info[epid].tx.info; |
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|
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if (!(info->v1i.rx_status & FJES_RX_MTU_CHANGING_DONE)) |
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return; |
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|
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if (EP_RING_FULL(info->v1i.head, info->v1i.tail, |
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info->v1i.count_max)) { |
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all_queue_available = 0; |
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break; |
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} |
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} |
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|
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if (all_queue_available) { |
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netif_wake_queue(netdev); |
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return; |
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} |
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} |
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|
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usleep_range(50, 100); |
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|
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queue_work(adapter->txrx_wq, &adapter->tx_stall_task); |
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} |
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|
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static void fjes_force_close_task(struct work_struct *work) |
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{ |
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struct fjes_adapter *adapter = container_of(work, |
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struct fjes_adapter, force_close_task); |
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struct net_device *netdev = adapter->netdev; |
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|
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rtnl_lock(); |
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dev_close(netdev); |
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rtnl_unlock(); |
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} |
|
|
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static void fjes_raise_intr_rxdata_task(struct work_struct *work) |
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{ |
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struct fjes_adapter *adapter = container_of(work, |
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struct fjes_adapter, raise_intr_rxdata_task); |
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struct fjes_hw *hw = &adapter->hw; |
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enum ep_partner_status pstatus; |
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int max_epid, my_epid, epid; |
|
|
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my_epid = hw->my_epid; |
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max_epid = hw->max_epid; |
|
|
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for (epid = 0; epid < max_epid; epid++) |
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hw->ep_shm_info[epid].tx_status_work = 0; |
|
|
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for (epid = 0; epid < max_epid; epid++) { |
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if (epid == my_epid) |
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continue; |
|
|
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pstatus = fjes_hw_get_partner_ep_status(hw, epid); |
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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 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_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 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 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 void fjes_txrx_stop_req_irq(struct fjes_adapter *adapter, |
|
int src_epid) |
|
{ |
|
struct fjes_hw *hw = &adapter->hw; |
|
enum ep_partner_status status; |
|
unsigned long flags; |
|
|
|
status = fjes_hw_get_partner_ep_status(hw, src_epid); |
|
trace_fjes_txrx_stop_req_irq_pre(hw, src_epid, status); |
|
switch (status) { |
|
case EP_PARTNER_UNSHARE: |
|
case EP_PARTNER_COMPLETE: |
|
default: |
|
break; |
|
case EP_PARTNER_WAITING: |
|
if (src_epid < hw->my_epid) { |
|
spin_lock_irqsave(&hw->rx_status_lock, flags); |
|
hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= |
|
FJES_RX_STOP_REQ_DONE; |
|
spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
|
|
|
clear_bit(src_epid, &hw->txrx_stop_req_bit); |
|
set_bit(src_epid, &adapter->unshare_watch_bitmask); |
|
|
|
if (!work_pending(&adapter->unshare_watch_task)) |
|
queue_work(adapter->control_wq, |
|
&adapter->unshare_watch_task); |
|
} |
|
break; |
|
case EP_PARTNER_SHARED: |
|
if (hw->ep_shm_info[src_epid].rx.info->v1i.rx_status & |
|
FJES_RX_STOP_REQ_REQUEST) { |
|
set_bit(src_epid, &hw->epstop_req_bit); |
|
if (!work_pending(&hw->epstop_task)) |
|
queue_work(adapter->control_wq, |
|
&hw->epstop_task); |
|
} |
|
break; |
|
} |
|
trace_fjes_txrx_stop_req_irq_post(hw, src_epid); |
|
} |
|
|
|
static void fjes_stop_req_irq(struct fjes_adapter *adapter, int src_epid) |
|
{ |
|
struct fjes_hw *hw = &adapter->hw; |
|
enum ep_partner_status status; |
|
unsigned long flags; |
|
|
|
set_bit(src_epid, &hw->hw_info.buffer_unshare_reserve_bit); |
|
|
|
status = fjes_hw_get_partner_ep_status(hw, src_epid); |
|
trace_fjes_stop_req_irq_pre(hw, src_epid, status); |
|
switch (status) { |
|
case EP_PARTNER_WAITING: |
|
spin_lock_irqsave(&hw->rx_status_lock, flags); |
|
hw->ep_shm_info[src_epid].tx.info->v1i.rx_status |= |
|
FJES_RX_STOP_REQ_DONE; |
|
spin_unlock_irqrestore(&hw->rx_status_lock, flags); |
|
clear_bit(src_epid, &hw->txrx_stop_req_bit); |
|
fallthrough; |
|
case EP_PARTNER_UNSHARE: |
|
case EP_PARTNER_COMPLETE: |
|
default: |
|
set_bit(src_epid, &adapter->unshare_watch_bitmask); |
|
if (!work_pending(&adapter->unshare_watch_task)) |
|
queue_work(adapter->control_wq, |
|
&adapter->unshare_watch_task); |
|
break; |
|
case EP_PARTNER_SHARED: |
|
set_bit(src_epid, &hw->epstop_req_bit); |
|
|
|
if (!work_pending(&hw->epstop_task)) |
|
queue_work(adapter->control_wq, &hw->epstop_task); |
|
break; |
|
} |
|
trace_fjes_stop_req_irq_post(hw, src_epid); |
|
} |
|
|
|
static void fjes_update_zone_irq(struct fjes_adapter *adapter, |
|
int src_epid) |
|
{ |
|
struct fjes_hw *hw = &adapter->hw; |
|
|
|
if (!work_pending(&hw->update_zone_task)) |
|
queue_work(adapter->control_wq, &hw->update_zone_task); |
|
} |
|
|
|
static irqreturn_t fjes_intr(int irq, void *data) |
|
{ |
|
struct fjes_adapter *adapter = data; |
|
struct fjes_hw *hw = &adapter->hw; |
|
irqreturn_t ret; |
|
u32 icr; |
|
|
|
icr = fjes_hw_capture_interrupt_status(hw); |
|
|
|
if (icr & REG_IS_MASK_IS_ASSERT) { |
|
if (icr & REG_ICTL_MASK_RX_DATA) { |
|
fjes_rx_irq(adapter, icr & REG_IS_MASK_EPID); |
|
hw->ep_shm_info[icr & REG_IS_MASK_EPID].ep_stats |
|
.recv_intr_rx += 1; |
|
} |
|
|
|
if (icr & REG_ICTL_MASK_DEV_STOP_REQ) { |
|
fjes_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); |
|
hw->ep_shm_info[icr & REG_IS_MASK_EPID].ep_stats |
|
.recv_intr_stop += 1; |
|
} |
|
|
|
if (icr & REG_ICTL_MASK_TXRX_STOP_REQ) { |
|
fjes_txrx_stop_req_irq(adapter, icr & REG_IS_MASK_EPID); |
|
hw->ep_shm_info[icr & REG_IS_MASK_EPID].ep_stats |
|
.recv_intr_unshare += 1; |
|
} |
|
|
|
if (icr & REG_ICTL_MASK_TXRX_STOP_DONE) |
|
fjes_hw_set_irqmask(hw, |
|
REG_ICTL_MASK_TXRX_STOP_DONE, true); |
|
|
|
if (icr & REG_ICTL_MASK_INFO_UPDATE) { |
|
fjes_update_zone_irq(adapter, icr & REG_IS_MASK_EPID); |
|
hw->ep_shm_info[icr & REG_IS_MASK_EPID].ep_stats |
|
.recv_intr_zoneupdate += 1; |
|
} |
|
|
|
ret = IRQ_HANDLED; |
|
} else { |
|
ret = IRQ_NONE; |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
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 void fjes_rx_irq(struct fjes_adapter *adapter, int src_epid) |
|
{ |
|
struct fjes_hw *hw = &adapter->hw; |
|
|
|
fjes_hw_set_irqmask(hw, REG_ICTL_MASK_RX_DATA, true); |
|
|
|
adapter->unset_rx_last = true; |
|
napi_schedule(&adapter->napi); |
|
} |
|
|
|
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; |
|
} |
|
|
|
/* 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; |
|
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); |
|
err = fjes_hw_init(&adapter->hw); |
|
if (err) |
|
goto err_free_control_wq; |
|
|
|
/* setup MAC address (02:00:00:00:00:[epid])*/ |
|
netdev->dev_addr[0] = 2; |
|
netdev->dev_addr[1] = 0; |
|
netdev->dev_addr[2] = 0; |
|
netdev->dev_addr[3] = 0; |
|
netdev->dev_addr[4] = 0; |
|
netdev->dev_addr[5] = hw->my_epid; /* EPID */ |
|
|
|
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 int fjes_sw_init(struct fjes_adapter *adapter) |
|
{ |
|
struct net_device *netdev = adapter->netdev; |
|
|
|
netif_napi_add(netdev, &adapter->napi, fjes_poll, 64); |
|
|
|
return 0; |
|
} |
|
|
|
/* 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 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); |
|
} |
|
} |
|
|
|
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 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; |
|
int result; |
|
|
|
result = acpi_bus_get_device(obj_handle, &device); |
|
if (result) |
|
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);
|
|
|