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ebba3bf38b
This patch adds a driver for a Synopsys DesignWare Ethernet MAC. The driver uses interrupts to handle received frames, but it uses a spinloop when transmitting to wait for the transmit descriptor to become available. Transmission is coordinated by a fiber, so this should not result in the system execution being blocked. Only a single descriptor is allocated for each of the transmit and receive directions to save memory and simplify the code. Another simplification is that none of the offload capabilities of the Ethernet device are used. The driver currently only supports a single instance of the Ethernet MAC, which is consistent with the limitation in the network stack that only a single network device is supported. Change-Id: I013b3d439a76e8ff91a775516f7035841b040870 Signed-off-by: Michael LeMay <michael.lemay@intel.com>
39 lines
1.2 KiB
C
39 lines
1.2 KiB
C
/*
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* Copyright (c) 2015 Intel Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef DRIVERS_ETHERNET_ETHERNET_H_
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#define DRIVERS_ETHERNET_ETHERNET_H_
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#include <misc/printk.h>
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#ifdef CONFIG_ETHERNET_DEBUG
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#define ETH_DBG(fmt, ...) printk("ethernet: %s: " fmt, __func__, ##__VA_ARGS__)
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#define ETH_ERR(fmt, ...) printk("ethernet: %s: " fmt, __func__, ##__VA_ARGS__)
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#define ETH_INFO(fmt, ...) printk("ethernet: " fmt, ##__VA_ARGS__)
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#define ETH_PRINT(fmt, ...) printk(fmt, ##__VA_ARGS__)
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#else
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#define ETH_DBG(fmt, ...)
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#define ETH_ERR(fmt, ...)
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#define ETH_INFO(fmt, ...)
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#define ETH_PRINT(fmt, ...)
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#endif
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#endif /* DRIVERS_ETHERNET_ETHERNET_H_ */
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