[f73cfe99] | 1 | /** |
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| 2 | * @file |
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| 3 | * |
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| 4 | * @brief Network Driver |
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| 5 | * |
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| 6 | * This driver is a wrapper for the DWMAC 1000 driver from libchip. |
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| 7 | * The DWMAC 1000 driver is an on-chip Synopsys IP Ethernet controllers |
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| 8 | */ |
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| 9 | |
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| 10 | /* |
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| 11 | * Copyright (c) 2013 embedded brains GmbH. All rights reserved. |
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| 12 | * |
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| 13 | * embedded brains GmbH |
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| 14 | * Dornierstr. 4 |
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| 15 | * 82178 Puchheim |
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| 16 | * Germany |
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| 17 | * <rtems@embedded-brains.de> |
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| 18 | * |
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| 19 | * The license and distribution terms for this file may be |
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| 20 | * found in the file LICENSE in this distribution or at |
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| 21 | * http://www.rtems.org/license/LICENSE. |
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| 22 | */ |
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| 23 | |
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| 24 | |
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| 25 | #include <rtems.h> |
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| 26 | |
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| 27 | #if defined(RTEMS_NETWORKING) |
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| 28 | |
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| 29 | #include <assert.h> |
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| 30 | #include <stdint.h> |
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| 31 | #include <stdlib.h> |
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| 32 | #include <errno.h> |
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| 33 | #include <rtems.h> |
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| 34 | #include <rtems/config.h> |
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| 35 | #include <bsp.h> |
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| 36 | #include <bsp/irq.h> |
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| 37 | #include <bsp/linker-symbols.h> |
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| 38 | #include <bsp/hwlib.h> |
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| 39 | #include <bsp/alt_clock_manager.h> |
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| 40 | #include <bsp/alt_generalpurpose_io.h> |
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| 41 | #include <bsp/nocache-heap.h> |
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| 42 | #include "socal/alt_rstmgr.h" |
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| 43 | #include "socal/hps.h" |
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| 44 | #include "socal/socal.h" |
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| 45 | #include <libchip/dwmac.h> |
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| 46 | |
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| 47 | /** @brief Pin mask for the interrupt from the ethernet PHY */ |
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| 48 | #define NETWORK_PIN_MASK_PHY_INTERRUPT 0x00000040U |
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| 49 | |
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| 50 | /** @brief Ethernet PHY status */ |
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| 51 | typedef enum { |
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| 52 | /** @brief The ethernet PHY is off */ |
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| 53 | NETWORK_IF_PHY_STATUS_OFF, |
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| 54 | |
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| 55 | /** @brief The ethernet PHY is on an initialized, but stopped */ |
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| 56 | NETWORK_IF_PHY_STATUS_STOPPED, |
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| 57 | |
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| 58 | /** @brief The ethernet PHY is started and will generate requested events */ |
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| 59 | NETWORK_IF_PHY_STATUS_STARTED, |
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| 60 | |
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| 61 | /** @brief Number of ethernet PHY statuses */ |
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| 62 | NETWORK_IF_PHY_STATUS_COUNT |
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| 63 | } network_if_phy_status; |
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| 64 | |
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| 65 | /** @brief Phy context |
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| 66 | * |
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| 67 | * ethernet PHY device context |
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| 68 | */ |
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| 69 | typedef struct { |
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| 70 | /** @brief PHY device status */ |
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| 71 | network_if_phy_status status; |
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| 72 | |
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| 73 | /** @brief Interrupt mask which corresponds to currently requested events */ |
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| 74 | uint16_t irq_mask; |
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| 75 | } network_if_phy_context; |
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| 76 | |
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| 77 | /** @brief Phy context initializer |
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| 78 | * |
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| 79 | * @retval Initialized network PHY context |
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| 80 | */ |
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| 81 | #define NETWORK_IF_PHY_CONTEXT_INITIALIZER( \ |
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| 82 | ) \ |
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| 83 | { \ |
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| 84 | NETWORK_IF_PHY_STATUS_OFF, \ |
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| 85 | 0 \ |
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| 86 | } |
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| 87 | |
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| 88 | /** @brief Network interface controller ID |
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| 89 | * |
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| 90 | * Identifies the network interface controller handled by the driver |
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| 91 | */ |
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| 92 | typedef enum { |
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| 93 | /** @brief ID for EMAC0 */ |
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| 94 | NETWORK_IF_NIC_ID_EMAC0, |
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| 95 | |
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| 96 | /** @brief ID for EMAC1 */ |
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| 97 | NETWORK_IF_NIC_ID_EMAC1, |
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| 98 | |
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| 99 | /** @brief Number of network interface controller IDs */ |
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| 100 | NETWORK_IF_NIC_ID_COUNT |
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| 101 | } network_if_nic_id; |
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| 102 | |
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| 103 | /** @brief Network interface context |
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| 104 | * |
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| 105 | * Context for the micro controller specific part of the DWMAC 1000 n |
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| 106 | * etwork driver |
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| 107 | */ |
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| 108 | typedef struct { |
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| 109 | /** @brief Network interface controller ID */ |
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| 110 | network_if_nic_id nic_id; |
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| 111 | |
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| 112 | /** @brief Driver context |
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| 113 | * |
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| 114 | * Address of the context of the low level DWMAC 1000 driver from libchip */ |
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| 115 | void *driver_context; |
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| 116 | |
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| 117 | /** @brief Ethernet PHY context */ |
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| 118 | network_if_phy_context phy; |
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| 119 | |
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| 120 | /* TODO: Create network context on micro controller level */ |
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| 121 | } network_if_context; |
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| 122 | |
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| 123 | /** @brief Network interface context initializer |
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| 124 | * |
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| 125 | * Initializer for the context of a network interface |
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| 126 | * @param nic_id ID of the network interface controller |
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| 127 | * @param driver_context Address of the context of the low level DWMAC 1000 |
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| 128 | * driver from libchip |
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| 129 | * @retval Initialized network interface context |
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| 130 | */ |
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| 131 | #define NETWORK_IF_CONTEXT_INITIALIZER( \ |
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| 132 | nic_id, \ |
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| 133 | driver_context \ |
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| 134 | ) \ |
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| 135 | { \ |
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| 136 | nic_id, \ |
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| 137 | driver_context, \ |
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| 138 | NETWORK_IF_PHY_CONTEXT_INITIALIZER() \ |
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| 139 | } |
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| 140 | |
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| 141 | /****************************************************************************** |
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| 142 | * Helper Methods |
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| 143 | ******************************************************************************/ |
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| 144 | |
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| 145 | /** @brief Altera status code to errno |
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| 146 | * |
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| 147 | * Convert Altera status code to errno error number |
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| 148 | * @param status Altera status code as returned by methods from Alteras HWLib |
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| 149 | * @retval Converted errno error number from errno.h |
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| 150 | */ |
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| 151 | static int network_if_altera_status_code_to_errno( ALT_STATUS_CODE status ) |
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| 152 | { |
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| 153 | int eno = 0; |
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| 154 | |
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| 155 | switch ( status ) { |
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| 156 | /*! |
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| 157 | * Indicates a FALSE condition. |
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| 158 | */ |
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| 159 | case ALT_E_FALSE: |
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| 160 | |
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| 161 | /*! |
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| 162 | * Indicates a TRUE condition. |
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| 163 | */ |
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| 164 | case ALT_E_TRUE: |
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| 165 | |
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| 166 | /*! The operation was successful. */ |
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| 167 | /* case ALT_E_SUCCESS: */ |
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| 168 | eno = 0; |
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| 169 | break; |
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| 170 | |
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| 171 | /*! The operation failed. */ |
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| 172 | case ALT_E_ERROR: |
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| 173 | |
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| 174 | /*! An invalid option was selected. */ |
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| 175 | case ALT_E_INV_OPTION: |
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| 176 | eno = EIO; /* I/O error */ |
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| 177 | break; |
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| 178 | |
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| 179 | /*! FPGA configuration error detected.*/ |
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| 180 | case ALT_E_FPGA_CFG: |
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| 181 | eno = ECANCELED; /* Operation canceled */ |
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| 182 | break; |
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| 183 | |
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| 184 | /*! FPGA CRC error detected. */ |
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| 185 | case ALT_E_FPGA_CRC: |
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| 186 | |
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| 187 | /*! An error occurred on the FPGA configuration bitstream input source. */ |
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| 188 | case ALT_E_FPGA_CFG_STM: |
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| 189 | eno = EPROTO; /* Protocol error */ |
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| 190 | break; |
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| 191 | |
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| 192 | /*! The FPGA is powered off. */ |
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| 193 | case ALT_E_FPGA_PWR_OFF: |
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| 194 | eno = ENODEV; /* No such device */ |
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| 195 | break; |
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| 196 | |
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| 197 | /*! The SoC does not currently control the FPGA. */ |
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| 198 | case ALT_E_FPGA_NO_SOC_CTRL: |
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| 199 | |
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| 200 | /*! The FPGA is not in USER mode. */ |
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| 201 | case ALT_E_FPGA_NOT_USER_MODE: |
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| 202 | eno = EPERM; /* Not super-user */ |
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| 203 | break; |
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| 204 | |
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| 205 | /*! An argument violates a range constraint. */ |
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| 206 | case ALT_E_ARG_RANGE: |
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| 207 | |
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| 208 | /*! A bad argument value was passed. */ |
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| 209 | case ALT_E_BAD_ARG: |
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| 210 | |
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| 211 | /*! The argument value is reserved or unavailable. */ |
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| 212 | case ALT_E_RESERVED: |
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| 213 | eno = EINVAL; /* Invalid argument */ |
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| 214 | break; |
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| 215 | |
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| 216 | /*! The operation is invalid or illegal. */ |
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| 217 | case ALT_E_BAD_OPERATION: |
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| 218 | |
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| 219 | /*! The version ID is invalid. */ |
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| 220 | case ALT_E_BAD_VERSION: |
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| 221 | eno = EFAULT; /* Bad address */ |
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| 222 | break; |
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| 223 | |
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| 224 | /*! An operation or response timeout period expired. */ |
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| 225 | case ALT_E_TMO: |
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| 226 | |
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| 227 | /*! A clock is not enabled or violates an operational constraint. */ |
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| 228 | case ALT_E_BAD_CLK: |
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| 229 | eno = ETIME; /* Timer expired */ |
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| 230 | break; |
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| 231 | |
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| 232 | /*! The buffer does not contain enough free space for the operation. */ |
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| 233 | case ALT_E_BUF_OVF: |
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| 234 | eno = ENOMEM; /* Not enough core */ |
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| 235 | break; |
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| 236 | default: |
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| 237 | |
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| 238 | /* Unknown case. Implement it! */ |
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| 239 | assert( 0 == 1 ); |
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| 240 | eno = EIO; |
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| 241 | break; |
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| 242 | } |
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| 243 | |
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| 244 | return eno; |
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| 245 | } |
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| 246 | |
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| 247 | /** @brief PHY check chip ID |
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| 248 | * |
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| 249 | * Check the chip-ID of the KSZ8842 ethernet PHY. |
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| 250 | * @param context Address of the network context |
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| 251 | * @retval 0 if chip could be identified, error code from errno.h otherwise. |
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| 252 | */ |
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| 253 | static int network_if_phy_check_chip_id( network_if_context *context ) |
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| 254 | { |
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| 255 | int eno; |
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| 256 | uint16_t reg; |
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| 257 | |
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| 258 | eno = dwmac_if_read_from_phy( |
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| 259 | context->driver_context, |
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| 260 | 2, |
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| 261 | ® |
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| 262 | ); |
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| 263 | |
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| 264 | if ( eno == 0 ) { |
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| 265 | if ( reg != 0x0022 ) { /* PHY ID part 1 */ |
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| 266 | eno = ENXIO; |
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| 267 | } else { |
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| 268 | eno = dwmac_if_read_from_phy( |
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| 269 | context->driver_context, |
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| 270 | 3, |
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| 271 | ® |
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| 272 | ); |
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| 273 | |
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| 274 | if ( eno == 0 ) { |
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| 275 | /* PHY ID part 2 and |
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| 276 | * Manufacturers model number */ |
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| 277 | if ( ( ( reg & 0xFC00 ) >> 10 ) != 0x0005 ) { |
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| 278 | eno = ENXIO; |
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| 279 | } else if ( ( ( reg & 0x03F0 ) >> 4 ) != 0x0021 ) { |
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| 280 | eno = ENXIO; |
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| 281 | } |
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| 282 | } |
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| 283 | } |
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| 284 | } |
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| 285 | |
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| 286 | return eno; |
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| 287 | } |
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| 288 | |
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| 289 | /****************************************************************************** |
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| 290 | * Callback Methods |
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| 291 | ******************************************************************************/ |
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| 292 | |
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| 293 | /** @brief NIC enable |
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| 294 | * |
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| 295 | * Enables (powers up) the network interface card. |
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| 296 | * @param[in] arg The void pointer argument passed to |
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| 297 | * dwmac_network_if_attach_detach. |
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| 298 | * @retval 0 on success, error code from errno.h on failure. |
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| 299 | */ |
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| 300 | static int network_if_nic_enable( void *arg ) |
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| 301 | { |
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| 302 | int eno = 0; |
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| 303 | network_if_context *context = (network_if_context *) arg; |
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| 304 | ALT_CLK_t module_clk = ALT_CLK_EMAC0; |
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| 305 | uint32_t permodrst_clr_msk = ALT_RSTMGR_PERMODRST_EMAC0_CLR_MSK; |
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| 306 | |
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| 307 | switch ( context->nic_id ) { |
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| 308 | case NETWORK_IF_NIC_ID_EMAC0: |
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| 309 | { |
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| 310 | module_clk = ALT_CLK_EMAC0; |
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| 311 | permodrst_clr_msk = ALT_RSTMGR_PERMODRST_EMAC0_CLR_MSK; |
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| 312 | } |
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| 313 | break; |
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| 314 | case NETWORK_IF_NIC_ID_EMAC1: |
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| 315 | { |
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| 316 | module_clk = ALT_CLK_EMAC1; |
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| 317 | permodrst_clr_msk = ALT_RSTMGR_PERMODRST_EMAC1_CLR_MSK; |
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| 318 | } |
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| 319 | break; |
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| 320 | |
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| 321 | case NETWORK_IF_NIC_ID_COUNT: |
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| 322 | |
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| 323 | /* Invalid case */ |
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| 324 | eno = ENODEV; |
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| 325 | break; |
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| 326 | default: |
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| 327 | |
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| 328 | /* Unknown case */ |
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| 329 | eno = ENOTSUP; |
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| 330 | break; |
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| 331 | } |
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| 332 | |
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| 333 | /* Pin mux configuration is handled by the Preloader. Thus no |
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| 334 | * pin mux configuration here. */ |
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| 335 | |
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| 336 | /* Enable the clock for the EMAC module */ |
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| 337 | if ( eno == 0 ) { |
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| 338 | if ( ALT_E_FALSE == alt_clk_is_enabled( module_clk ) ) { |
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| 339 | ALT_STATUS_CODE status = alt_clk_clock_enable( module_clk ); |
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| 340 | eno = network_if_altera_status_code_to_errno( status ); |
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| 341 | } |
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| 342 | } |
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| 343 | |
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| 344 | /* Finish reset for the EMAC module */ |
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| 345 | if ( eno == 0 ) { |
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| 346 | uint32_t reg = alt_read_word( ALT_RSTMGR_PERMODRST_ADDR ); |
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| 347 | alt_write_word( ALT_RSTMGR_PERMODRST_ADDR, reg & permodrst_clr_msk ); |
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| 348 | } |
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| 349 | |
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| 350 | return eno; |
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| 351 | } |
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| 352 | |
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| 353 | /** @brief NIC disable. |
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| 354 | * |
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| 355 | * Disables (powers down) the network interface card. |
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| 356 | * @param[in] arg The void pointer argument passed to |
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| 357 | * dwmac_network_if_attach_detach. |
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| 358 | * @retval 0 on success, error code from errno.h on failure. |
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| 359 | */ |
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| 360 | static int network_if_nic_disable( void *arg ) |
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| 361 | { |
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| 362 | int eno = 0; |
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| 363 | network_if_context *context = (network_if_context *) arg; |
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| 364 | ALT_CLK_t module_clk = ALT_CLK_EMAC0; |
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| 365 | uint32_t permodrst_set_msk = ALT_RSTMGR_PERMODRST_EMAC0_SET_MSK; |
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| 366 | |
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| 367 | switch ( context->nic_id ) { |
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| 368 | case NETWORK_IF_NIC_ID_EMAC0: |
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| 369 | module_clk = ALT_CLK_EMAC0; |
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| 370 | permodrst_set_msk = ALT_RSTMGR_PERMODRST_EMAC0_SET_MSK; |
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| 371 | break; |
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| 372 | case NETWORK_IF_NIC_ID_EMAC1: |
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| 373 | module_clk = ALT_CLK_EMAC1; |
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| 374 | permodrst_set_msk = ALT_RSTMGR_PERMODRST_EMAC1_SET_MSK; |
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| 375 | break; |
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| 376 | |
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| 377 | case NETWORK_IF_NIC_ID_COUNT: |
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| 378 | |
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| 379 | /* Invalid case */ |
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| 380 | eno = ENODEV; |
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| 381 | break; |
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| 382 | default: |
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| 383 | |
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| 384 | /* Unknown case */ |
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| 385 | eno = ENOTSUP; |
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| 386 | break; |
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| 387 | } |
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| 388 | |
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| 389 | /* Enter rest status for the EMAC module */ |
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| 390 | if ( eno == 0 ) { |
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| 391 | uint32_t reg = alt_read_word( ALT_RSTMGR_PERMODRST_ADDR ); |
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| 392 | alt_write_word( ALT_RSTMGR_PERMODRST_ADDR, reg | permodrst_set_msk ); |
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| 393 | } |
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| 394 | |
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| 395 | /* Disable the clock for the EMAC module */ |
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| 396 | if ( eno == 0 ) { |
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| 397 | if ( ALT_E_TRUE == alt_clk_is_enabled( module_clk ) ) { |
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| 398 | ALT_STATUS_CODE status = alt_clk_clock_disable( module_clk ); |
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| 399 | eno = network_if_altera_status_code_to_errno( status ); |
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| 400 | } |
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| 401 | } |
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| 402 | |
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| 403 | return eno; |
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| 404 | } |
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| 405 | |
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| 406 | /** @brief PHY disable. |
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| 407 | * |
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| 408 | * Disables (powers down) the network PHY. |
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| 409 | * @param[in] arg The void pointer argument passed to |
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| 410 | * dwmac_network_if_attach_detach. |
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| 411 | * @retval 0 on success, error code from errno.h on failure. |
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| 412 | */ |
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| 413 | static int network_if_phy_disable( void *arg ) |
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| 414 | { |
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| 415 | int eno = 0; |
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| 416 | network_if_context *self = (network_if_context *) arg; |
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| 417 | uint32_t mask; |
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| 418 | ALT_STATUS_CODE status_code; |
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| 419 | |
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| 420 | /* The power pin of the PHY is hard wire to board power control and |
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| 421 | * the PHY supports interrupts, This means we can not power it down |
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| 422 | * and we don't need to stop a timer for polling PHY events. */ |
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| 423 | |
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| 424 | status_code = alt_gpio_port_int_mask_set( |
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| 425 | ALT_GPIO_PORTB, |
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| 426 | NETWORK_PIN_MASK_PHY_INTERRUPT, |
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| 427 | NETWORK_PIN_MASK_PHY_INTERRUPT |
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| 428 | ); |
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| 429 | eno = network_if_altera_status_code_to_errno( status_code ); |
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| 430 | |
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| 431 | if ( eno == 0 ) { |
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| 432 | mask = alt_gpio_port_int_enable_get( ALT_GPIO_PORTB ); |
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| 433 | status_code = alt_gpio_port_int_enable( |
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| 434 | ALT_GPIO_PORTB, |
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| 435 | mask & ~NETWORK_PIN_MASK_PHY_INTERRUPT |
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| 436 | ); |
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| 437 | eno = network_if_altera_status_code_to_errno( status_code ); |
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| 438 | } |
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| 439 | |
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| 440 | if ( eno == 0 ) { |
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| 441 | status_code = alt_gpio_port_int_status_clear( |
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| 442 | ALT_GPIO_PORTB, |
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| 443 | NETWORK_PIN_MASK_PHY_INTERRUPT |
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| 444 | ); |
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| 445 | eno = network_if_altera_status_code_to_errno( status_code ); |
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| 446 | } |
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| 447 | |
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| 448 | if ( eno == 0 ) { |
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| 449 | self->phy.status = NETWORK_IF_PHY_STATUS_OFF; |
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| 450 | } |
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| 451 | |
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| 452 | return eno; |
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| 453 | } |
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| 454 | |
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| 455 | /** @brief PHY enable. |
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| 456 | * |
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| 457 | * Enables (powers up) the network PHY. |
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| 458 | * @param[in] arg The void pointer argument passed to |
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| 459 | * dwmac_network_if_attach_detach. |
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| 460 | * @retval 0 on success, error code from errno.h on failure. |
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| 461 | */ |
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| 462 | static int network_if_phy_enable( void *arg ) |
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| 463 | { |
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| 464 | int eno = 0; |
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| 465 | network_if_context *self = (network_if_context *) arg; |
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| 466 | ALT_STATUS_CODE status_code; |
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| 467 | |
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| 468 | /* The power pin of the PHY is hard wire to board power control and |
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| 469 | * the PHY supports interrupts, This means we can not power it up |
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| 470 | * and we don't need to start a timer for polling PHY events. */ |
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| 471 | |
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| 472 | eno = network_if_phy_check_chip_id( self ); |
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| 473 | |
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| 474 | if ( eno == 0 ) { |
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| 475 | /* The phy is already enabled and we will reset it */ |
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| 476 | eno = network_if_phy_disable( self ); |
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| 477 | |
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| 478 | if ( eno == 0 ) { |
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| 479 | rtems_task_wake_after( rtems_clock_get_ticks_per_second() / 100 ); |
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| 480 | } |
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| 481 | } else { |
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| 482 | eno = 0; |
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| 483 | } |
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| 484 | |
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| 485 | status_code = alt_gpio_port_datadir_set( |
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| 486 | ALT_GPIO_PORTB, |
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| 487 | NETWORK_PIN_MASK_PHY_INTERRUPT, |
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| 488 | 0 |
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| 489 | ); |
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| 490 | eno = network_if_altera_status_code_to_errno( status_code ); |
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| 491 | |
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| 492 | if ( eno == 0 ) { |
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| 493 | status_code = alt_gpio_port_int_type_set( |
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| 494 | ALT_GPIO_PORTB, |
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| 495 | NETWORK_PIN_MASK_PHY_INTERRUPT, |
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| 496 | 0 |
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| 497 | ); |
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| 498 | eno = network_if_altera_status_code_to_errno( status_code ); |
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| 499 | } |
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| 500 | |
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| 501 | if ( eno == 0 ) { |
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| 502 | status_code = alt_gpio_port_int_pol_set( |
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| 503 | ALT_GPIO_PORTB, |
---|
| 504 | NETWORK_PIN_MASK_PHY_INTERRUPT, |
---|
| 505 | 1 |
---|
| 506 | ); |
---|
| 507 | eno = network_if_altera_status_code_to_errno( status_code ); |
---|
| 508 | } |
---|
| 509 | |
---|
| 510 | if ( eno == 0 ) { |
---|
| 511 | status_code = alt_gpio_port_debounce_set( |
---|
| 512 | ALT_GPIO_PORTB, |
---|
| 513 | NETWORK_PIN_MASK_PHY_INTERRUPT, |
---|
| 514 | 0 |
---|
| 515 | ); |
---|
| 516 | eno = network_if_altera_status_code_to_errno( status_code ); |
---|
| 517 | } |
---|
| 518 | |
---|
| 519 | if ( eno == 0 ) { |
---|
| 520 | status_code = alt_gpio_port_int_enable( |
---|
| 521 | ALT_GPIO_PORTB, |
---|
| 522 | NETWORK_PIN_MASK_PHY_INTERRUPT |
---|
| 523 | ); |
---|
| 524 | eno = network_if_altera_status_code_to_errno( status_code ); |
---|
| 525 | } |
---|
| 526 | |
---|
| 527 | if ( eno == 0 ) { |
---|
| 528 | status_code = alt_gpio_port_int_mask_set( |
---|
| 529 | ALT_GPIO_PORTB, |
---|
| 530 | NETWORK_PIN_MASK_PHY_INTERRUPT, |
---|
| 531 | 0 |
---|
| 532 | ); |
---|
| 533 | eno = network_if_altera_status_code_to_errno( status_code ); |
---|
| 534 | } |
---|
| 535 | |
---|
| 536 | if ( eno == 0 ) { |
---|
| 537 | status_code = alt_gpio_port_int_status_clear( |
---|
| 538 | ALT_GPIO_PORTB, |
---|
| 539 | NETWORK_PIN_MASK_PHY_INTERRUPT |
---|
| 540 | ); |
---|
| 541 | eno = network_if_altera_status_code_to_errno( status_code ); |
---|
| 542 | } |
---|
| 543 | |
---|
| 544 | if ( eno == 0 ) { |
---|
| 545 | self->phy.status = NETWORK_IF_PHY_STATUS_STOPPED; |
---|
| 546 | } |
---|
| 547 | |
---|
| 548 | return eno; |
---|
| 549 | } |
---|
| 550 | |
---|
| 551 | /** @brief Clear phy event status. |
---|
| 552 | * |
---|
| 553 | * Clears all PHY event statuses. |
---|
| 554 | * @param[in] arg The void pointer argument passed to |
---|
| 555 | * dwmac_network_if_attach_detach. |
---|
| 556 | * @retval 0 on success, error code from errno.h on failure. |
---|
| 557 | */ |
---|
| 558 | static int network_if_phy_event_status_clear( void *arg ) |
---|
| 559 | { |
---|
| 560 | int eno; |
---|
| 561 | ALT_STATUS_CODE status_code; |
---|
| 562 | |
---|
| 563 | (void) arg; |
---|
| 564 | |
---|
| 565 | /* Clear the interrupt status */ |
---|
| 566 | status_code = alt_gpio_port_int_status_clear( |
---|
| 567 | ALT_GPIO_PORTB, |
---|
| 568 | NETWORK_PIN_MASK_PHY_INTERRUPT |
---|
| 569 | ); |
---|
| 570 | eno = network_if_altera_status_code_to_errno( status_code ); |
---|
| 571 | |
---|
| 572 | if ( eno == 0 ) { |
---|
| 573 | /* Unmask the interrupt (was masked within interrupt handler) */ |
---|
| 574 | status_code = alt_gpio_port_int_mask_set( |
---|
| 575 | ALT_GPIO_PORTB, |
---|
| 576 | NETWORK_PIN_MASK_PHY_INTERRUPT, |
---|
| 577 | 0 |
---|
| 578 | ); |
---|
| 579 | eno = network_if_altera_status_code_to_errno( status_code ); |
---|
| 580 | } |
---|
| 581 | |
---|
| 582 | return eno; |
---|
| 583 | } |
---|
| 584 | |
---|
| 585 | /** |
---|
| 586 | * @brief Get the PHY event status. |
---|
| 587 | * |
---|
| 588 | * Reports status on PHY events (e.g. PHY interrupts). |
---|
| 589 | * @param[in] arg The void pointer argument passed to |
---|
| 590 | * dwmac_network_if_attach_detach. |
---|
| 591 | * @param[out] event_set Pointer to a buffer for a set of events for which a |
---|
| 592 | * PHY status change was detected. |
---|
| 593 | * For events see @see dwmac_phy_event. |
---|
| 594 | * @retval 0 on success, error code from errno.h on failure. |
---|
| 595 | */ |
---|
| 596 | static int network_if_phy_events_status_get( |
---|
| 597 | void *arg, |
---|
| 598 | dwmac_phy_event *event_set ) |
---|
| 599 | { |
---|
| 600 | int eno = 0; |
---|
| 601 | uint16_t reg = 0; |
---|
| 602 | network_if_context *self = (network_if_context *) arg; |
---|
| 603 | |
---|
| 604 | eno = dwmac_if_read_from_phy( |
---|
| 605 | self->driver_context, |
---|
| 606 | 0x1B, |
---|
| 607 | ® |
---|
| 608 | ); |
---|
| 609 | |
---|
| 610 | if ( eno == 0 ) { |
---|
| 611 | if ( ( reg & 0x80 ) != 0 ) { |
---|
| 612 | *event_set |= PHY_EVENT_JABBER; |
---|
| 613 | } |
---|
| 614 | |
---|
| 615 | if ( ( reg & 0x40 ) != 0 ) { |
---|
| 616 | *event_set |= PHY_EVENT_RECEIVE_ERROR; |
---|
| 617 | } |
---|
| 618 | |
---|
| 619 | if ( ( reg & 0x20 ) != 0 ) { |
---|
| 620 | *event_set |= PHY_EVENT_PAGE_RECEIVE; |
---|
| 621 | } |
---|
| 622 | |
---|
| 623 | if ( ( reg & 0x10 ) != 0 ) { |
---|
| 624 | *event_set |= PHY_EVENT_PARALLEL_DETECT_FAULT; |
---|
| 625 | } |
---|
| 626 | |
---|
| 627 | if ( ( reg & 0x08 ) != 0 ) { |
---|
| 628 | *event_set |= PHY_EVENT_LINK_PARTNER_ACK; |
---|
| 629 | } |
---|
| 630 | |
---|
| 631 | if ( ( reg & 0x04 ) != 0 ) { |
---|
| 632 | *event_set |= PHY_EVENT_LINK_DOWN; |
---|
| 633 | } |
---|
| 634 | |
---|
| 635 | if ( ( reg & 0x02 ) != 0 ) { |
---|
| 636 | *event_set |= PHY_EVENT_REMOTE_FAULT; |
---|
| 637 | } |
---|
| 638 | |
---|
| 639 | if ( ( reg & 0x01 ) != 0 ) { |
---|
| 640 | *event_set |= PHY_EVENT_LINK_UP; |
---|
| 641 | } |
---|
| 642 | } |
---|
| 643 | |
---|
| 644 | return eno; |
---|
| 645 | } |
---|
| 646 | |
---|
| 647 | /** @brief Network PHY interrupt handler |
---|
| 648 | * |
---|
| 649 | * Handling method for interrupts from the PHY. |
---|
| 650 | * @param arg Address of the network interface context |
---|
| 651 | */ |
---|
| 652 | static void network_if_phy_interrupt_handler( void *arg ) |
---|
| 653 | { |
---|
| 654 | int eno = 0; |
---|
| 655 | network_if_context *self = (network_if_context *) arg; |
---|
| 656 | uint32_t reg; |
---|
| 657 | |
---|
| 658 | reg = alt_gpio_port_int_status_get( ALT_GPIO_PORTB ); |
---|
| 659 | |
---|
| 660 | if ( reg & NETWORK_PIN_MASK_PHY_INTERRUPT ) { |
---|
| 661 | /* We have a level interrupt and we expect the driver to do |
---|
| 662 | * the actual interrupt handling from within a task context. |
---|
| 663 | * Thus we have to mask the interrupt. A call to |
---|
| 664 | * network_if_phy_event_status_clear() will unmask it */ |
---|
| 665 | ALT_STATUS_CODE status_code = alt_gpio_port_int_mask_set( |
---|
| 666 | ALT_GPIO_PORTB, |
---|
| 667 | NETWORK_PIN_MASK_PHY_INTERRUPT, |
---|
| 668 | NETWORK_PIN_MASK_PHY_INTERRUPT |
---|
| 669 | ); |
---|
| 670 | eno = network_if_altera_status_code_to_errno( status_code ); |
---|
| 671 | |
---|
| 672 | if ( eno == 0 ) { |
---|
| 673 | eno = dwmac_if_handle_phy_event( |
---|
| 674 | self->driver_context |
---|
| 675 | ); |
---|
| 676 | } |
---|
| 677 | } |
---|
| 678 | |
---|
| 679 | assert( eno == 0 ); |
---|
| 680 | } |
---|
| 681 | |
---|
| 682 | /** @brief PHY event enable. |
---|
| 683 | * |
---|
| 684 | * Enables generation of events for an event set. |
---|
| 685 | * @param[in] arg The void pointer argument passed to |
---|
| 686 | * dwmac_network_if_attach_detach. |
---|
| 687 | * @param[in] event_set Set of events. For these events shall get generated |
---|
| 688 | * upon PHY status change. |
---|
| 689 | * @retval 0 on success, error code from errno.h on failure. |
---|
| 690 | */ |
---|
| 691 | static int network_if_phy_event_enable( |
---|
| 692 | void *arg, |
---|
| 693 | const dwmac_phy_event event_set ) |
---|
| 694 | { |
---|
| 695 | int eno = 0; |
---|
| 696 | uint16_t reg = 0; |
---|
| 697 | network_if_context *self = (network_if_context *) arg; |
---|
| 698 | network_if_phy_status old_status = self->phy.status; |
---|
| 699 | |
---|
| 700 | if ( arg != NULL ) { |
---|
| 701 | switch ( self->phy.status ) { |
---|
| 702 | case NETWORK_IF_PHY_STATUS_OFF: |
---|
| 703 | break; |
---|
| 704 | case NETWORK_IF_PHY_STATUS_STOPPED: |
---|
| 705 | break; |
---|
| 706 | case NETWORK_IF_PHY_STATUS_STARTED: |
---|
| 707 | { |
---|
| 708 | eno = dwmac_if_read_from_phy( |
---|
| 709 | self->driver_context, |
---|
| 710 | 0x1B, |
---|
| 711 | ® |
---|
| 712 | ); |
---|
| 713 | |
---|
| 714 | if ( eno == 0 ) { |
---|
| 715 | /* Disable all interrupts, but leave interrupt status |
---|
| 716 | * bits untouched */ |
---|
| 717 | reg &= 0x00FF; |
---|
| 718 | eno = dwmac_if_write_to_phy( |
---|
| 719 | self->driver_context, |
---|
| 720 | 0x1B, |
---|
| 721 | reg |
---|
| 722 | ); |
---|
| 723 | } |
---|
| 724 | |
---|
| 725 | if ( eno == 0 ) { |
---|
| 726 | self->phy.irq_mask = 0; |
---|
| 727 | self->phy.status = NETWORK_IF_PHY_STATUS_STOPPED; |
---|
| 728 | } |
---|
| 729 | } |
---|
| 730 | break; |
---|
| 731 | case NETWORK_IF_PHY_STATUS_COUNT: |
---|
| 732 | { |
---|
| 733 | /* Invalid case */ |
---|
| 734 | assert( self->phy.status != NETWORK_IF_PHY_STATUS_COUNT ); |
---|
| 735 | eno = ENOTSUP; |
---|
| 736 | } |
---|
| 737 | break; |
---|
| 738 | default: |
---|
| 739 | { |
---|
| 740 | /* Unknown case */ |
---|
| 741 | assert( |
---|
| 742 | self->phy.status == NETWORK_IF_PHY_STATUS_OFF |
---|
| 743 | || self->phy.status == NETWORK_IF_PHY_STATUS_STOPPED |
---|
| 744 | || self->phy.status == NETWORK_IF_PHY_STATUS_STARTED |
---|
| 745 | ); |
---|
| 746 | eno = ENOTSUP; |
---|
| 747 | } |
---|
| 748 | break; |
---|
| 749 | } |
---|
| 750 | |
---|
| 751 | if ( eno == 0 ) { |
---|
| 752 | /* Select interrupts to enable */ |
---|
| 753 | if ( ( event_set & PHY_EVENT_JABBER ) != 0 ) { |
---|
| 754 | reg |= 0x8000; |
---|
| 755 | } |
---|
| 756 | |
---|
| 757 | if ( ( event_set & PHY_EVENT_RECEIVE_ERROR ) != 0 ) { |
---|
| 758 | reg |= 0x4000; |
---|
| 759 | } |
---|
| 760 | |
---|
| 761 | if ( ( event_set & PHY_EVENT_PAGE_RECEIVE ) != 0 ) { |
---|
| 762 | reg |= 0x2000; |
---|
| 763 | } |
---|
| 764 | |
---|
| 765 | if ( ( event_set & PHY_EVENT_PARALLEL_DETECT_FAULT ) != 0 ) { |
---|
| 766 | reg |= 0x1000; |
---|
| 767 | } |
---|
| 768 | |
---|
| 769 | if ( ( event_set & PHY_EVENT_LINK_PARTNER_ACK ) != 0 ) { |
---|
| 770 | reg |= 0x0800; |
---|
| 771 | } |
---|
| 772 | |
---|
| 773 | if ( ( event_set & PHY_EVENT_LINK_DOWN ) != 0 ) { |
---|
| 774 | reg |= 0x0400; |
---|
| 775 | } |
---|
| 776 | |
---|
| 777 | if ( ( event_set & PHY_EVENT_REMOTE_FAULT ) != 0 ) { |
---|
| 778 | reg |= 0x0200; |
---|
| 779 | } |
---|
| 780 | |
---|
| 781 | if ( ( event_set & PHY_EVENT_LINK_UP ) != 0 ) { |
---|
| 782 | reg |= 0x100; |
---|
| 783 | } |
---|
| 784 | |
---|
| 785 | switch ( old_status ) { |
---|
| 786 | case NETWORK_IF_PHY_STATUS_OFF: |
---|
| 787 | break; |
---|
| 788 | case NETWORK_IF_PHY_STATUS_STOPPED: |
---|
| 789 | break; |
---|
| 790 | case NETWORK_IF_PHY_STATUS_STARTED: |
---|
| 791 | { |
---|
| 792 | if ( eno == 0 ) { |
---|
| 793 | /* Modify interrupt enable bits, but leave |
---|
| 794 | * interrupt status bits untouched */ |
---|
| 795 | eno = dwmac_if_write_to_phy( |
---|
| 796 | self->driver_context, |
---|
| 797 | 0x1B, |
---|
| 798 | reg & 0xFF00 |
---|
| 799 | ); |
---|
| 800 | } |
---|
| 801 | } |
---|
| 802 | break; |
---|
| 803 | case NETWORK_IF_PHY_STATUS_COUNT: |
---|
| 804 | { |
---|
| 805 | /* Invalid case */ |
---|
| 806 | assert( self->phy.status != NETWORK_IF_PHY_STATUS_COUNT ); |
---|
| 807 | eno = ENOTSUP; |
---|
| 808 | } |
---|
| 809 | break; |
---|
| 810 | default: |
---|
| 811 | { |
---|
| 812 | /* Unknown case */ |
---|
| 813 | assert( |
---|
| 814 | self->phy.status == NETWORK_IF_PHY_STATUS_OFF |
---|
| 815 | || self->phy.status == NETWORK_IF_PHY_STATUS_STOPPED |
---|
| 816 | || self->phy.status == NETWORK_IF_PHY_STATUS_STARTED |
---|
| 817 | ); |
---|
| 818 | eno = ENOTSUP; |
---|
| 819 | } |
---|
| 820 | break; |
---|
| 821 | } |
---|
| 822 | |
---|
| 823 | if ( eno == 0 ) { |
---|
| 824 | self->phy.irq_mask = reg & 0xFF00; |
---|
| 825 | } |
---|
| 826 | } |
---|
| 827 | } |
---|
| 828 | |
---|
| 829 | return eno; |
---|
| 830 | } |
---|
| 831 | |
---|
| 832 | /** |
---|
| 833 | * @brief Stop the network PHY. |
---|
| 834 | * |
---|
| 835 | * Do anything necessary to stop the network PHY (stop generating events, ...). |
---|
| 836 | * @param[in] arg The void pointer argument passed to |
---|
| 837 | * dwmac_network_if_attach_detach. |
---|
| 838 | * @retval 0 on success, error code from errno.h on failure. |
---|
| 839 | */ |
---|
| 840 | static int network_if_phy_stop( void *arg ) |
---|
| 841 | { |
---|
| 842 | int eno = 0; |
---|
| 843 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
| 844 | network_if_context *self = (network_if_context *) arg; |
---|
| 845 | |
---|
| 846 | switch ( self->phy.status ) { |
---|
| 847 | case NETWORK_IF_PHY_STATUS_OFF: |
---|
| 848 | break; |
---|
| 849 | case NETWORK_IF_PHY_STATUS_STOPPED: |
---|
| 850 | break; |
---|
| 851 | case NETWORK_IF_PHY_STATUS_STARTED: |
---|
| 852 | { |
---|
| 853 | /* Remove any selected interrupts */ |
---|
| 854 | eno = dwmac_if_write_to_phy( |
---|
| 855 | self->driver_context, |
---|
| 856 | 0x1B, |
---|
| 857 | 0 |
---|
| 858 | ); |
---|
| 859 | |
---|
| 860 | if ( eno == 0 ) { |
---|
| 861 | uint16_t reg; |
---|
| 862 | |
---|
| 863 | /* Clear interrupt status bits by reading them */ |
---|
| 864 | eno = dwmac_if_read_from_phy( |
---|
| 865 | self->driver_context, |
---|
| 866 | 0x1B, |
---|
| 867 | ® |
---|
| 868 | ); |
---|
| 869 | } |
---|
| 870 | |
---|
| 871 | if ( eno == 0 ) { |
---|
| 872 | self->phy.irq_mask = 0; |
---|
| 873 | |
---|
| 874 | /* Remove interrupt handler */ |
---|
| 875 | sc = rtems_interrupt_handler_remove( |
---|
| 876 | ALT_INT_INTERRUPT_GPIO1, |
---|
| 877 | network_if_phy_interrupt_handler, |
---|
| 878 | self |
---|
| 879 | ); |
---|
| 880 | eno = rtems_status_code_to_errno( sc ); |
---|
| 881 | |
---|
| 882 | if ( eno == 0 ) { |
---|
| 883 | self->phy.status = NETWORK_IF_PHY_STATUS_STOPPED; |
---|
| 884 | } |
---|
| 885 | } |
---|
| 886 | } |
---|
| 887 | break; |
---|
| 888 | case NETWORK_IF_PHY_STATUS_COUNT: |
---|
| 889 | { |
---|
| 890 | /* Invalid case */ |
---|
| 891 | assert( self->phy.status != NETWORK_IF_PHY_STATUS_COUNT ); |
---|
| 892 | eno = ENOTSUP; |
---|
| 893 | } |
---|
| 894 | break; |
---|
| 895 | default: |
---|
| 896 | { |
---|
| 897 | /* Unknown case */ |
---|
| 898 | assert( |
---|
| 899 | self->phy.status == NETWORK_IF_PHY_STATUS_OFF |
---|
| 900 | || self->phy.status == NETWORK_IF_PHY_STATUS_STOPPED |
---|
| 901 | || self->phy.status == NETWORK_IF_PHY_STATUS_STARTED |
---|
| 902 | ); |
---|
| 903 | eno = ENOTSUP; |
---|
| 904 | } |
---|
| 905 | break; |
---|
| 906 | } |
---|
| 907 | |
---|
| 908 | return eno; |
---|
| 909 | } |
---|
| 910 | |
---|
| 911 | /** |
---|
| 912 | * @brief Start the network PHY. |
---|
| 913 | * |
---|
| 914 | * Do anything necessary to start the network PHY (start generating |
---|
| 915 | * events, ...). |
---|
| 916 | * @param[in] arg The void pointer argument passed to |
---|
| 917 | * dwmac_network_if_attach_detach. |
---|
| 918 | * @retval 0 on success, error code from errno.h on failure. |
---|
| 919 | */ |
---|
| 920 | static int network_if_phy_start( void *arg ) |
---|
| 921 | { |
---|
| 922 | int eno = 0; |
---|
| 923 | rtems_status_code sc = RTEMS_SUCCESSFUL; |
---|
| 924 | network_if_context *self = (network_if_context *) arg; |
---|
| 925 | |
---|
| 926 | switch ( self->phy.status ) { |
---|
| 927 | case NETWORK_IF_PHY_STATUS_OFF: |
---|
| 928 | { |
---|
| 929 | assert( self->phy.status != NETWORK_IF_PHY_STATUS_OFF ); |
---|
| 930 | eno = EHOSTDOWN; |
---|
| 931 | } |
---|
| 932 | break; |
---|
| 933 | case NETWORK_IF_PHY_STATUS_STOPPED: |
---|
| 934 | |
---|
| 935 | /* Disable all interrupts */ |
---|
| 936 | eno = dwmac_if_write_to_phy( |
---|
| 937 | self->driver_context, |
---|
| 938 | 0x1B, |
---|
| 939 | 0 |
---|
| 940 | ); |
---|
| 941 | |
---|
| 942 | if ( eno == 0 ) { |
---|
| 943 | } |
---|
| 944 | |
---|
| 945 | if ( eno == 0 ) { |
---|
| 946 | /* Install interrupt handler */ |
---|
| 947 | sc = rtems_interrupt_handler_install( |
---|
| 948 | ALT_INT_INTERRUPT_GPIO1, |
---|
| 949 | NULL, |
---|
| 950 | RTEMS_INTERRUPT_SHARED, |
---|
| 951 | network_if_phy_interrupt_handler, |
---|
| 952 | self |
---|
| 953 | ); |
---|
| 954 | eno = rtems_status_code_to_errno( sc ); |
---|
| 955 | } |
---|
| 956 | |
---|
| 957 | if ( eno == 0 ) { |
---|
| 958 | /* Enable interrupts */ |
---|
| 959 | eno = dwmac_if_write_to_phy( |
---|
| 960 | self->driver_context, |
---|
| 961 | 0x1B, |
---|
| 962 | self->phy.irq_mask |
---|
| 963 | ); |
---|
| 964 | } |
---|
| 965 | |
---|
| 966 | break; |
---|
| 967 | case NETWORK_IF_PHY_STATUS_STARTED: |
---|
| 968 | { |
---|
| 969 | uint16_t irq_mask = self->phy.irq_mask; |
---|
| 970 | |
---|
| 971 | /* Re-start the phy */ |
---|
| 972 | eno = network_if_phy_stop( self ); |
---|
| 973 | |
---|
| 974 | if ( eno == 0 ) { |
---|
| 975 | self->phy.irq_mask = irq_mask; |
---|
| 976 | |
---|
| 977 | eno = network_if_phy_start( |
---|
| 978 | self |
---|
| 979 | ); |
---|
| 980 | } |
---|
| 981 | } |
---|
| 982 | break; |
---|
| 983 | |
---|
| 984 | case NETWORK_IF_PHY_STATUS_COUNT: |
---|
| 985 | { |
---|
| 986 | /* Invalid case */ |
---|
| 987 | assert( self->phy.status != NETWORK_IF_PHY_STATUS_COUNT ); |
---|
| 988 | eno = ENOTSUP; |
---|
| 989 | } |
---|
| 990 | break; |
---|
| 991 | default: |
---|
| 992 | { |
---|
| 993 | /* Unknown case */ |
---|
| 994 | assert( |
---|
| 995 | self->phy.status == NETWORK_IF_PHY_STATUS_OFF |
---|
| 996 | || self->phy.status == NETWORK_IF_PHY_STATUS_STOPPED |
---|
| 997 | || self->phy.status == NETWORK_IF_PHY_STATUS_STARTED |
---|
| 998 | ); |
---|
| 999 | eno = ENOTSUP; |
---|
| 1000 | } |
---|
| 1001 | break; |
---|
| 1002 | } |
---|
| 1003 | |
---|
| 1004 | if ( eno == 0 ) { |
---|
| 1005 | self->phy.status = NETWORK_IF_PHY_STATUS_STARTED; |
---|
| 1006 | } |
---|
| 1007 | |
---|
| 1008 | return eno; |
---|
| 1009 | } |
---|
| 1010 | |
---|
| 1011 | /** |
---|
| 1012 | * @brief Allocate nocache RAM. |
---|
| 1013 | * |
---|
| 1014 | * Allocate uncached RAM. |
---|
| 1015 | * @param[in] arg The void pointer argument passed to |
---|
| 1016 | * dwmac_network_if_attach_detach. |
---|
| 1017 | * @param[out] memory Pointer of a buffer to write the address of the |
---|
| 1018 | * allocated memory to. |
---|
| 1019 | * @param[in] size Number of bytes to be allocated |
---|
| 1020 | * @retval 0 on success, error code from errno.h on failure. |
---|
| 1021 | */ |
---|
| 1022 | static int network_if_mem_alloc_nocache( |
---|
| 1023 | void *arg, |
---|
| 1024 | void **memory, |
---|
| 1025 | const size_t size ) |
---|
| 1026 | { |
---|
| 1027 | int eno = EINVAL; |
---|
| 1028 | |
---|
| 1029 | (void) arg; |
---|
| 1030 | |
---|
| 1031 | assert( memory != NULL ); |
---|
| 1032 | |
---|
| 1033 | if ( memory != NULL ) { |
---|
| 1034 | *memory = altera_cyclone_v_nocache_malloc( size ); |
---|
| 1035 | |
---|
| 1036 | if ( *memory != NULL ) { |
---|
| 1037 | eno = 0; |
---|
| 1038 | } else { |
---|
| 1039 | eno = ENOMEM; |
---|
| 1040 | } |
---|
| 1041 | } |
---|
| 1042 | |
---|
| 1043 | return eno; |
---|
| 1044 | } |
---|
| 1045 | |
---|
| 1046 | /** |
---|
| 1047 | * @brief Free nocache RAM. |
---|
| 1048 | * |
---|
| 1049 | * Release uncached RAM. |
---|
| 1050 | * @param[in] arg The void pointer argument passed to |
---|
| 1051 | * dwmac_network_if_attach_detach. |
---|
| 1052 | * @param[in] memory Pointer to the memory to be freed. |
---|
| 1053 | * @retval 0 on success, error code from errno.h on failure. |
---|
| 1054 | */ |
---|
| 1055 | static int network_if_mem_free_nocache( |
---|
| 1056 | void *arg, |
---|
| 1057 | void *memory ) |
---|
| 1058 | { |
---|
| 1059 | int eno = EINVAL; |
---|
| 1060 | |
---|
| 1061 | (void) arg; |
---|
| 1062 | |
---|
| 1063 | assert( memory != NULL ); |
---|
| 1064 | |
---|
| 1065 | if ( memory != NULL ) { |
---|
| 1066 | altera_cyclone_v_nocache_free( memory ); |
---|
| 1067 | eno = 0; |
---|
| 1068 | } |
---|
| 1069 | |
---|
| 1070 | return eno; |
---|
| 1071 | } |
---|
| 1072 | |
---|
| 1073 | /** |
---|
| 1074 | * @brief Bus setup. |
---|
| 1075 | * |
---|
| 1076 | * Callback method for setting up the system bus for the network driver. |
---|
| 1077 | * @param[in] arg The void pointer argument passed to |
---|
| 1078 | * dwmac_network_if_attach_detach. |
---|
| 1079 | * @retval 0 on success, error code from errno.h on failure. |
---|
| 1080 | */ |
---|
| 1081 | static int network_if_bus_setup( void *arg ) |
---|
| 1082 | { |
---|
| 1083 | (void) arg; |
---|
| 1084 | |
---|
| 1085 | /* Nothing to be done */ |
---|
| 1086 | return 0; |
---|
| 1087 | } |
---|
| 1088 | |
---|
| 1089 | /***************************************************************************** |
---|
| 1090 | * Context Data |
---|
| 1091 | ******************************************************************************/ |
---|
| 1092 | |
---|
| 1093 | /** @brief Network interface context */ |
---|
| 1094 | static network_if_context context = NETWORK_IF_CONTEXT_INITIALIZER( |
---|
| 1095 | |
---|
| 1096 | /** @brief Use EMAC1 */ |
---|
| 1097 | NETWORK_IF_NIC_ID_EMAC1, |
---|
| 1098 | |
---|
| 1099 | /** @brief Address of driver context |
---|
| 1100 | * |
---|
| 1101 | * To be assigned with return value of dwmac_network_if_attach_detach */ |
---|
| 1102 | NULL |
---|
| 1103 | ); |
---|
| 1104 | |
---|
| 1105 | /** @brief Network driver DMA configuration data */ |
---|
| 1106 | static const dwmac_dma_cfg NETWORK_DMA_CFG = DWMAC_DMA_CFG_INITIALIZER( |
---|
| 1107 | |
---|
| 1108 | /** @brief Bus mode burst length */ |
---|
| 1109 | DWMAC_DMA_CFG_BUS_MODE_BURST_LENGTH_64, |
---|
| 1110 | |
---|
| 1111 | /** @brief Bus mode fixed burst? */ |
---|
| 1112 | DWMAC_DMA_CFG_BUS_MODE_BURST_MODE_SINGLE_OR_INCR, |
---|
| 1113 | |
---|
| 1114 | /** @brief Bus mode mixed burst? */ |
---|
| 1115 | DWMAC_DMA_CFG_BUS_MODE_BURST_NOT_MIXED, |
---|
| 1116 | |
---|
| 1117 | /** @brief Permit AXI burst length of 4 */ |
---|
| 1118 | DWMAC_DMA_CFG_AXI_BURST_LENGTH_4_NOT_SUPPORTED, |
---|
| 1119 | |
---|
| 1120 | /** @brief Permit AXI burst length of 8 */ |
---|
| 1121 | DWMAC_DMA_CFG_AXI_BURST_LENGTH_8_NOT_SUPPORTED, |
---|
| 1122 | |
---|
| 1123 | /** @brief Permit AXI burst length of 16 */ |
---|
| 1124 | DWMAC_DMA_CFG_AXI_BURST_LENGTH_16_NOT_SUPPORTED, |
---|
| 1125 | |
---|
| 1126 | /** @brief Select boundary crossing mode */ |
---|
| 1127 | DWMAC_DMA_CFG_AXI_BURST_BOUNDARY_4_KB |
---|
| 1128 | ); |
---|
| 1129 | |
---|
| 1130 | /** @brief Network driver configuration data */ |
---|
| 1131 | static const dwmac_cfg NETWORK_DRIVER_CFG = DWMAC_CFG_INITIALIZER( |
---|
| 1132 | |
---|
| 1133 | /** @brief GMII clock rate */ |
---|
| 1134 | 75000000, |
---|
| 1135 | |
---|
| 1136 | /** @brief Address of the GMAC registers for emac1 */ |
---|
| 1137 | ALT_EMAC1_GMACGRP_ADDR, |
---|
| 1138 | |
---|
| 1139 | /** @brief Address of the DMA registers for emac1 */ |
---|
| 1140 | ALT_EMAC1_DMAGRP_ADDR, |
---|
| 1141 | |
---|
| 1142 | /** @brief Address of the PHY on the mdio bus */ |
---|
| 1143 | 4, |
---|
| 1144 | |
---|
| 1145 | /** @brief Bytes per L1 cache line */ |
---|
| 1146 | 32, |
---|
| 1147 | |
---|
| 1148 | /** @brief Interrupt number for the EMAC */ |
---|
| 1149 | ALT_INT_INTERRUPT_EMAC1_IRQ, |
---|
| 1150 | |
---|
| 1151 | /** @brief DMA configuration */ |
---|
| 1152 | &NETWORK_DMA_CFG, |
---|
| 1153 | |
---|
| 1154 | /** @brief Callback method for enabling the network controller */ |
---|
| 1155 | network_if_nic_enable, |
---|
| 1156 | |
---|
| 1157 | /** @brief Callback method for disabling the network controller */ |
---|
| 1158 | network_if_nic_disable, |
---|
| 1159 | |
---|
| 1160 | /** @brief Callback method for enabling the PHY */ |
---|
| 1161 | network_if_phy_enable, |
---|
| 1162 | |
---|
| 1163 | /** @brief Callback method for disabling the PHY */ |
---|
| 1164 | network_if_phy_disable, |
---|
| 1165 | |
---|
| 1166 | /** @brief Callback which enables PHY events for forwarding to driver */ |
---|
| 1167 | network_if_phy_event_enable, |
---|
| 1168 | |
---|
| 1169 | /** @brief Callback method for clearing PHY interrupt status */ |
---|
| 1170 | network_if_phy_event_status_clear, |
---|
| 1171 | |
---|
| 1172 | /** @brief Callback method for getting a set of events from the PHY */ |
---|
| 1173 | network_if_phy_events_status_get, |
---|
| 1174 | |
---|
| 1175 | /** @brief Callback method for making the PHY start forwarding events */ |
---|
| 1176 | network_if_phy_start, |
---|
| 1177 | |
---|
| 1178 | /** @brief Callback method for making the PHY stop forwarding events */ |
---|
| 1179 | network_if_phy_stop, |
---|
| 1180 | |
---|
| 1181 | /** @brief Callback method for allocating uncached memory */ |
---|
| 1182 | network_if_mem_alloc_nocache, |
---|
| 1183 | |
---|
| 1184 | /** @brief Callback method for freeing uncached memory */ |
---|
| 1185 | network_if_mem_free_nocache, |
---|
| 1186 | |
---|
| 1187 | /** @brief Callback method for setting up bus upon driver startup */ |
---|
| 1188 | network_if_bus_setup, |
---|
| 1189 | |
---|
| 1190 | /** @brief Operations for the ethernet mac 1000 */ |
---|
| 1191 | &DWMAC_1000_ETHERNET_MAC_OPS, |
---|
| 1192 | |
---|
| 1193 | /** @brief Operations for the enhanced DMA descriptors */ |
---|
| 1194 | &DWMAC_DESCRIPTOR_OPS_ENHANCED |
---|
| 1195 | ); |
---|
| 1196 | |
---|
| 1197 | /****************************************************************************** |
---|
| 1198 | * API |
---|
| 1199 | ******************************************************************************/ |
---|
| 1200 | |
---|
| 1201 | /** @brief Network interface attach/detach |
---|
| 1202 | * |
---|
| 1203 | * The standard attach/detach method for network interfaces. |
---|
| 1204 | * This methods will call the DWMAC 1000 attach/detach method and pass |
---|
| 1205 | * configuration data and callback methods into it. Via these the general |
---|
| 1206 | * DWMAC 1000 driver is able the handle micro controller specific things. |
---|
| 1207 | * NOTE: Detaching is NOT supported! |
---|
| 1208 | * @param config Configuration parameters from and for the BSD network |
---|
| 1209 | * stack. |
---|
| 1210 | * @param attaching True if attaching the driver to the network stack, false if |
---|
| 1211 | * detaching. |
---|
| 1212 | * @retval 0 if successful, error code from errno.h if not. |
---|
| 1213 | */ |
---|
| 1214 | int altera_cyclone_v_network_if_attach_detach( |
---|
| 1215 | struct rtems_bsdnet_ifconfig *config, |
---|
| 1216 | int attaching ) |
---|
| 1217 | { |
---|
| 1218 | int eno = 0; |
---|
| 1219 | |
---|
| 1220 | assert( config != NULL ); |
---|
| 1221 | |
---|
| 1222 | /* Network controller initialization */ |
---|
| 1223 | context.driver_context = dwmac_network_if_attach_detach( |
---|
| 1224 | config, |
---|
| 1225 | &NETWORK_DRIVER_CFG, |
---|
| 1226 | &context, |
---|
| 1227 | attaching |
---|
| 1228 | ); |
---|
| 1229 | |
---|
| 1230 | if ( context.driver_context == NULL ) { |
---|
| 1231 | eno = EFAULT; |
---|
| 1232 | } |
---|
| 1233 | |
---|
| 1234 | return eno; |
---|
| 1235 | } |
---|
| 1236 | |
---|
| 1237 | #endif /* defined(RTEMS_NETWORKING) */ |
---|