[c932d85] | 1 | /* |
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[c9c67390] | 2 | * RTEMS NETWORK DRIVER FOR NATIONAL DP83932 `SONIC' |
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| 3 | * SYSTEMS-ORIENTED NETWORK INTERFACE CONTROLLER |
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| 4 | * |
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| 5 | * REUSABLE CHIP DRIVER |
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| 6 | * |
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[c932d85] | 7 | * References: |
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| 8 | * |
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[c9c67390] | 9 | * 1) DP83932C-20/25/33 MHz SONIC(TM) Systems-Oriented Network Interface |
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| 10 | * Controller data sheet. TL/F/10492, RRD-B30M105, National Semiconductor, |
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| 11 | * 1995. |
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[c932d85] | 12 | * |
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[c9c67390] | 13 | * 2) Software Driver Programmer's Guide for the DP83932 SONIC(TM), |
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| 14 | * Application Note 746, Wesley Lee and Mike Lui, TL/F/11140, |
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| 15 | * RRD-B30M75, National Semiconductor, March, 1991. |
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| 16 | * |
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| 17 | * COPYRIGHT (c) 1989-1997. |
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| 18 | * On-Line Applications Research Corporation (OAR). |
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| 19 | * |
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| 20 | * The license and distribution terms for this file may be |
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| 21 | * found in the file LICENSE in this distribution or at |
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[94365d9] | 22 | * http://www.rtems.com/license/LICENSE. |
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[c9c67390] | 23 | * |
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| 24 | * $Id$ |
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[f1f42b4] | 25 | * |
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| 26 | * This driver was originally written and tested on a DY-4 DMV177, |
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| 27 | * which had a 100 Mhz PPC603e. |
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| 28 | * |
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| 29 | * This driver also works with DP83934CVUL-20/25 MHz, tested on |
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[a3d3d9a] | 30 | * Tharsys ERC32 VME board. |
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[f1f42b4] | 31 | * |
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[a3d3d9a] | 32 | * Rehaul to fix lost interrupts and buffers, and to use to use |
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[f1f42b4] | 33 | * interrupt-free transmission by Jiri, 22/03/1999. |
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[c932d85] | 34 | */ |
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[7fc5d54e] | 35 | |
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[c9c67390] | 36 | #include <rtems.h> |
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[811115de] | 37 | #include <rtems/rtems_bsdnet.h> |
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[c9c67390] | 38 | #include <libchip/sonic.h> |
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[13cc89e1] | 39 | |
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[bfcf4cb3] | 40 | #include <stdio.h> |
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[9c6a99f] | 41 | #include <string.h> |
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[bfcf4cb3] | 42 | |
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| 43 | #include <errno.h> |
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[c932d85] | 44 | #include <rtems/error.h> |
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[bfcf4cb3] | 45 | |
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| 46 | #include <sys/param.h> |
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| 47 | #include <sys/mbuf.h> |
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| 48 | #include <sys/socket.h> |
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| 49 | #include <sys/sockio.h> |
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| 50 | #include <sys/sockio.h> |
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| 51 | |
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| 52 | #include <net/if.h> |
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| 53 | |
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| 54 | #include <netinet/in.h> |
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| 55 | #include <netinet/if_ether.h> |
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[c932d85] | 56 | |
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[7f247f3] | 57 | #if defined(__m68k__) |
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| 58 | extern m68k_isr_entry set_vector( rtems_isr_entry, rtems_vector_number, int ); |
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| 59 | #else |
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| 60 | extern rtems_isr_entry set_vector( rtems_isr_entry, rtems_vector_number, int ); |
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| 61 | #endif |
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[c9c67390] | 62 | |
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[7dbab720] | 63 | #if (SONIC_DEBUG & SONIC_DEBUG_DUMP_MBUFS) |
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| 64 | #include <rtems/dumpbuf.h> |
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| 65 | #endif |
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[e995f3a1] | 66 | |
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[7fc5d54e] | 67 | /* |
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| 68 | * Use the top line if you want more symbols. |
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| 69 | */ |
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| 70 | |
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[a3d3d9a] | 71 | #define SONIC_STATIC |
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[7fc5d54e] | 72 | /* #define SONIC_STATIC static */ |
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| 73 | |
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[c932d85] | 74 | /* |
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| 75 | * Number of devices supported by this driver |
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| 76 | */ |
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| 77 | #ifndef NSONIC |
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| 78 | # define NSONIC 1 |
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| 79 | #endif |
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| 80 | |
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| 81 | /* |
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[a3d3d9a] | 82 | * |
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[c932d85] | 83 | * As suggested by National Application Note 746, make the |
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| 84 | * receive resource area bigger than the receive descriptor area. |
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[811115de] | 85 | * |
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| 86 | * NOTE: Changing this may break this driver since it currently |
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| 87 | * assumes a 1<->1 mapping. |
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[c932d85] | 88 | */ |
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[9693fac4] | 89 | #define RRA_EXTRA_COUNT 0 |
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[c932d85] | 90 | |
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| 91 | /* |
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| 92 | * RTEMS event used by interrupt handler to signal daemons. |
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| 93 | */ |
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| 94 | #define INTERRUPT_EVENT RTEMS_EVENT_1 |
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| 95 | |
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[bfcf4cb3] | 96 | /* |
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| 97 | * RTEMS event used to start transmit daemon. |
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| 98 | * This must not be the same as INTERRUPT_EVENT. |
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| 99 | */ |
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| 100 | #define START_TRANSMIT_EVENT RTEMS_EVENT_2 |
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| 101 | |
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[c932d85] | 102 | /* |
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| 103 | * Largest Ethernet frame. |
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| 104 | */ |
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| 105 | #define MAXIMUM_FRAME_SIZE 1518 |
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| 106 | |
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| 107 | /* |
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| 108 | * Receive buffer size. |
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| 109 | * Allow for a pointer, plus a full ethernet frame (including Frame |
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| 110 | * Check Sequence) rounded up to a 4-byte boundary. |
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| 111 | */ |
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| 112 | #define RBUF_SIZE ((sizeof (void *) + (MAXIMUM_FRAME_SIZE) + 3) & ~3) |
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[811115de] | 113 | /* #define RBUF_WC ((((MAXIMUM_FRAME_SIZE) + 3) & ~3) / 2) */ |
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| 114 | #define RBUF_WC (RBUF_SIZE / 2) |
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[c932d85] | 115 | |
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| 116 | /* |
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| 117 | * Macros for manipulating 32-bit pointers as 16-bit fragments |
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| 118 | */ |
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[509fec9c] | 119 | #define LSW(p) ((uint16_t)((uint32_t)(p))) |
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| 120 | #define MSW(p) ((uint16_t)((uint32_t)(p) >> 16)) |
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| 121 | #define PTR(m,l) ((void*)(((uint16_t)(m)<<16)|(uint16_t)(l))) |
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[c932d85] | 122 | |
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| 123 | /* |
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| 124 | * Hardware-specific storage |
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| 125 | */ |
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[bfcf4cb3] | 126 | struct sonic_softc { |
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[c932d85] | 127 | /* |
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[bfcf4cb3] | 128 | * Connection to networking code |
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| 129 | * This entry *must* be the first in the sonic_softc structure. |
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[c932d85] | 130 | */ |
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[bfcf4cb3] | 131 | struct arpcom arpcom; |
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[c932d85] | 132 | |
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| 133 | /* |
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| 134 | * Default location of device registers |
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| 135 | * ===CACHE=== |
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| 136 | * This area must be non-cacheable, guarded. |
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| 137 | */ |
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[7fc5d54e] | 138 | void *sonic; |
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[c932d85] | 139 | |
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[13cc89e1] | 140 | /* |
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[a3d3d9a] | 141 | * Register access routines |
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[13cc89e1] | 142 | */ |
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| 143 | sonic_write_register_t write_register; |
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| 144 | sonic_read_register_t read_register; |
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[a3d3d9a] | 145 | |
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[c932d85] | 146 | /* |
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| 147 | * Interrupt vector |
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| 148 | */ |
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| 149 | rtems_vector_number vector; |
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| 150 | |
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[13cc89e1] | 151 | /* |
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| 152 | * Data Configuration Register values |
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| 153 | */ |
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[ee4f57d] | 154 | uint32_t dcr_value; |
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| 155 | uint32_t dc2_value; |
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[13cc89e1] | 156 | |
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[c932d85] | 157 | /* |
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[bfcf4cb3] | 158 | * Indicates configuration |
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[c932d85] | 159 | */ |
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[bfcf4cb3] | 160 | int acceptBroadcast; |
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| 161 | |
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| 162 | /* |
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| 163 | * Task waiting for interrupts |
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| 164 | */ |
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| 165 | rtems_id rxDaemonTid; |
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| 166 | rtems_id txDaemonTid; |
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[c932d85] | 167 | |
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| 168 | /* |
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| 169 | * Receive resource area |
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| 170 | */ |
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| 171 | int rdaCount; |
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| 172 | ReceiveResourcePointer_t rsa; |
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[4f38b713] | 173 | ReceiveResourcePointer_t rea; |
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[301a2a3c] | 174 | CamDescriptorPointer_t cdp; |
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[e70a8f16] | 175 | ReceiveDescriptorPointer_t rda; |
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[dddc0557] | 176 | ReceiveDescriptorPointer_t rdp_last; |
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[c932d85] | 177 | |
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| 178 | /* |
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| 179 | * Transmit descriptors |
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| 180 | */ |
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[e70a8f16] | 181 | int tdaCount; |
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[c932d85] | 182 | TransmitDescriptorPointer_t tdaHead; /* Last filled */ |
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| 183 | TransmitDescriptorPointer_t tdaTail; /* Next to retire */ |
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| 184 | |
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| 185 | /* |
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| 186 | * Statistics |
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| 187 | */ |
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[c153a7b] | 188 | unsigned long Interrupts; |
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[c932d85] | 189 | unsigned long rxInterrupts; |
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| 190 | unsigned long rxMissed; |
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| 191 | unsigned long rxGiant; |
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| 192 | unsigned long rxNonOctet; |
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| 193 | unsigned long rxBadCRC; |
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| 194 | unsigned long rxCollision; |
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| 195 | |
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| 196 | unsigned long txInterrupts; |
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| 197 | unsigned long txSingleCollision; |
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| 198 | unsigned long txMultipleCollision; |
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| 199 | unsigned long txCollision; |
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| 200 | unsigned long txDeferred; |
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| 201 | unsigned long txUnderrun; |
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| 202 | unsigned long txLateCollision; |
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| 203 | unsigned long txExcessiveCollision; |
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| 204 | unsigned long txExcessiveDeferral; |
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| 205 | unsigned long txLostCarrier; |
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| 206 | unsigned long txRawWait; |
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| 207 | }; |
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[bfcf4cb3] | 208 | SONIC_STATIC struct sonic_softc sonic_softc[NSONIC]; |
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[c932d85] | 209 | |
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[811115de] | 210 | |
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| 211 | /* |
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| 212 | ****************************************************************** |
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| 213 | * * |
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| 214 | * Debug Routines * |
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| 215 | * * |
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| 216 | ****************************************************************** |
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| 217 | */ |
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| 218 | |
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| 219 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY_DESCRIPTORS) |
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| 220 | void sonic_print_tx_descriptor( |
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| 221 | TransmitDescriptorPointer_t tdp |
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| 222 | ) |
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| 223 | { |
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| 224 | printf( "TXD ==> %p", tdp ); |
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| 225 | printf( " pkt_config = 0x%04x", tdp->pkt_config & 0xffff); |
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| 226 | printf( " pkt_size = 0x%04x\n", tdp->pkt_size & 0xffff ); |
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| 227 | printf( " frag_count = %d", tdp->frag_count & 0xffff ); |
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| 228 | /* could print all the fragments */ |
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| 229 | printf( " next = %p", tdp->next ); |
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| 230 | printf( " linkp = %p\n", tdp->linkp ); |
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| 231 | printf( " mbufp = %p", tdp->mbufp ); |
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| 232 | if ( tdp->mbufp ) |
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| 233 | printf( " mbufp->data = %p", mtod ( tdp->mbufp, void *) ); |
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| 234 | puts(""); |
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| 235 | } |
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| 236 | |
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| 237 | void sonic_print_rx_descriptor( |
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| 238 | ReceiveDescriptorPointer_t rdp |
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| 239 | ) |
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| 240 | { |
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| 241 | printf( "RXD ==> %p\n", rdp ); |
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| 242 | printf( " status = 0x%04x", rdp->status & 0xffff ); |
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| 243 | printf( " byte_count = 0x%04x\n", rdp->byte_count & 0xffff ); |
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| 244 | printf( " pkt = 0x%04x%04x", rdp->pkt_msw, rdp->pkt_lsw ); |
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| 245 | printf( " seq_no = %d", rdp->seq_no ); |
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| 246 | printf( " link = %d\n", rdp->link ); |
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| 247 | printf( " in_use = %d", rdp->in_use ); |
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| 248 | printf( " next = %p", rdp->next ); |
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| 249 | printf( " mbufp = %p", rdp->mbufp ); |
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| 250 | if ( rdp->mbufp ) |
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| 251 | printf( " mbufp->data = %p", mtod ( rdp->mbufp, void *) ); |
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| 252 | puts(""); |
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| 253 | } |
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| 254 | #endif |
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| 255 | |
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[c932d85] | 256 | /* |
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| 257 | ****************************************************************** |
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| 258 | * * |
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| 259 | * Support Routines * |
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| 260 | * * |
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| 261 | ****************************************************************** |
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| 262 | */ |
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| 263 | |
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[9693fac4] | 264 | void sonic_enable_interrupts( |
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[13cc89e1] | 265 | struct sonic_softc *sc, |
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[ee4f57d] | 266 | uint32_t mask |
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[9693fac4] | 267 | ) |
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| 268 | { |
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[13cc89e1] | 269 | void *rp = sc->sonic; |
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[9693fac4] | 270 | rtems_interrupt_level level; |
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| 271 | |
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| 272 | rtems_interrupt_disable( level ); |
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[13cc89e1] | 273 | (*sc->write_register)( |
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[9693fac4] | 274 | rp, |
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| 275 | SONIC_REG_IMR, |
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[13cc89e1] | 276 | (*sc->read_register)(rp, SONIC_REG_IMR) | mask |
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[9693fac4] | 277 | ); |
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| 278 | rtems_interrupt_enable( level ); |
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| 279 | } |
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| 280 | |
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[f1f42b4] | 281 | void sonic_disable_interrupts( |
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| 282 | struct sonic_softc *sc, |
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[ee4f57d] | 283 | uint32_t mask |
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[f1f42b4] | 284 | ) |
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| 285 | { |
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| 286 | void *rp = sc->sonic; |
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| 287 | rtems_interrupt_level level; |
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| 288 | |
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| 289 | rtems_interrupt_disable( level ); |
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| 290 | (*sc->write_register)( |
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| 291 | rp, |
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| 292 | SONIC_REG_IMR, |
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| 293 | (*sc->read_register)(rp, SONIC_REG_IMR) & ~mask |
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| 294 | ); |
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| 295 | rtems_interrupt_enable( level ); |
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| 296 | } |
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| 297 | |
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| 298 | void sonic_clear_interrupts( |
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| 299 | struct sonic_softc *sc, |
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[ee4f57d] | 300 | uint32_t mask |
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[f1f42b4] | 301 | ) |
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| 302 | { |
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| 303 | void *rp = sc->sonic; |
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| 304 | rtems_interrupt_level level; |
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| 305 | |
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| 306 | rtems_interrupt_disable( level ); |
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| 307 | (*sc->write_register)( rp, SONIC_REG_ISR, mask); |
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| 308 | rtems_interrupt_enable( level ); |
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| 309 | } |
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| 310 | |
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| 311 | void sonic_command( |
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| 312 | struct sonic_softc *sc, |
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[ee4f57d] | 313 | uint32_t mask |
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[f1f42b4] | 314 | ) |
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| 315 | { |
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| 316 | void *rp = sc->sonic; |
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| 317 | rtems_interrupt_level level; |
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| 318 | |
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| 319 | rtems_interrupt_disable( level ); |
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| 320 | (*sc->write_register)( rp, SONIC_REG_CR, mask); |
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| 321 | rtems_interrupt_enable( level ); |
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| 322 | } |
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| 323 | |
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[c932d85] | 324 | /* |
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| 325 | * Allocate non-cacheable memory on a single 64k page. |
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| 326 | * Very simple minded -- just keeps trying till the memory is on a single page. |
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| 327 | */ |
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[301a2a3c] | 328 | SONIC_STATIC void * sonic_allocate(unsigned int nbytes) |
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[c932d85] | 329 | { |
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| 330 | void *p; |
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| 331 | unsigned long a1, a2; |
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| 332 | |
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| 333 | for (;;) { |
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| 334 | /* |
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| 335 | * ===CACHE=== |
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| 336 | * Change malloc to malloc_noncacheable_guarded. |
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| 337 | */ |
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[bfcf4cb3] | 338 | p = malloc( nbytes, M_MBUF, M_NOWAIT ); |
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[c932d85] | 339 | if (p == NULL) |
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| 340 | rtems_panic ("No memory!"); |
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[7dbab720] | 341 | memset (p, '\0', nbytes); |
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[c932d85] | 342 | a1 = (unsigned long)p; |
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| 343 | a2 = a1 + nbytes - 1; |
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| 344 | if ((a1 >> 16) == (a2 >> 16)) |
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| 345 | break; |
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| 346 | } |
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[e70a8f16] | 347 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY_ALLOCATE) |
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[dddc0557] | 348 | printf( "sonic_allocate %d bytes at %p\n", nbytes, p ); |
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| 349 | #endif |
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[c932d85] | 350 | return p; |
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| 351 | } |
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| 352 | |
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| 353 | /* |
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| 354 | * Shut down the interface. |
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| 355 | */ |
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[7fc5d54e] | 356 | |
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[bfcf4cb3] | 357 | SONIC_STATIC void sonic_stop (struct sonic_softc *sc) |
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[c932d85] | 358 | { |
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[bfcf4cb3] | 359 | struct ifnet *ifp = &sc->arpcom.ac_if; |
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| 360 | |
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| 361 | ifp->if_flags &= ~IFF_RUNNING; |
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[c932d85] | 362 | |
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| 363 | /* |
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| 364 | * Stop the transmitter and receiver. |
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| 365 | */ |
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[f1f42b4] | 366 | sonic_command(sc, CR_HTX | CR_RXDIS ); |
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[c932d85] | 367 | } |
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| 368 | |
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| 369 | /* |
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| 370 | * Show interface statistics |
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| 371 | */ |
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[bfcf4cb3] | 372 | SONIC_STATIC void sonic_stats (struct sonic_softc *sc) |
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[c932d85] | 373 | { |
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[bfcf4cb3] | 374 | printf (" Total Interrupts:%-8lu", sc->Interrupts); |
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| 375 | printf (" Rx Interrupts:%-8lu", sc->rxInterrupts); |
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| 376 | printf (" Giant:%-8lu", sc->rxGiant); |
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| 377 | printf (" Non-octet:%-8lu\n", sc->rxNonOctet); |
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| 378 | printf (" Bad CRC:%-8lu", sc->rxBadCRC); |
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| 379 | printf (" Collision:%-8lu", sc->rxCollision); |
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| 380 | printf (" Missed:%-8lu\n", sc->rxMissed); |
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| 381 | |
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| 382 | printf ( " Tx Interrupts:%-8lu", sc->txInterrupts); |
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| 383 | printf ( " Deferred:%-8lu", sc->txDeferred); |
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| 384 | printf (" Lost Carrier:%-8lu\n", sc->txLostCarrier); |
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| 385 | printf ( "Single Collisions:%-8lu", sc->txSingleCollision); |
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| 386 | printf ( "Multiple Collisions:%-8lu", sc->txMultipleCollision); |
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| 387 | printf ("Excessive Collisions:%-8lu\n", sc->txExcessiveCollision); |
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| 388 | printf ( " Total Collisions:%-8lu", sc->txCollision); |
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| 389 | printf ( " Late Collision:%-8lu", sc->txLateCollision); |
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| 390 | printf (" Underrun:%-8lu\n", sc->txUnderrun); |
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| 391 | printf ( " Raw output wait:%-8lu\n", sc->txRawWait); |
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[c932d85] | 392 | } |
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| 393 | |
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| 394 | /* |
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| 395 | ****************************************************************** |
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| 396 | * * |
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| 397 | * Interrupt Handler * |
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| 398 | * * |
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| 399 | ****************************************************************** |
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| 400 | */ |
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[7fc5d54e] | 401 | |
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| 402 | SONIC_STATIC rtems_isr sonic_interrupt_handler (rtems_vector_number v) |
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[c932d85] | 403 | { |
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[bfcf4cb3] | 404 | struct sonic_softc *sc = sonic_softc; |
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[ee4f57d] | 405 | uint32_t isr, imr; |
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[7fc5d54e] | 406 | void *rp; |
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[c932d85] | 407 | |
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| 408 | #if (NSONIC > 1) |
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| 409 | /* |
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| 410 | * Find the device which requires service |
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| 411 | */ |
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| 412 | for (;;) { |
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[bfcf4cb3] | 413 | if (sc->vector == v) |
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[c932d85] | 414 | break; |
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[bfcf4cb3] | 415 | if (++sc == &sonic[NSONIC]) |
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[c932d85] | 416 | return; /* Spurious interrupt? */ |
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| 417 | } |
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| 418 | #endif /* NSONIC > 1 */ |
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| 419 | |
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| 420 | /* |
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| 421 | * Get pointer to SONIC registers |
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| 422 | */ |
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[bfcf4cb3] | 423 | rp = sc->sonic; |
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[c932d85] | 424 | |
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[bfcf4cb3] | 425 | sc->Interrupts++; |
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[1253f39] | 426 | |
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[13cc89e1] | 427 | isr = (*sc->read_register)( rp, SONIC_REG_ISR ); |
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| 428 | imr = (*sc->read_register)( rp, SONIC_REG_IMR ); |
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[7dbab720] | 429 | |
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[c932d85] | 430 | /* |
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| 431 | * Packet received or receive buffer area exceeded? |
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| 432 | */ |
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[f1f42b4] | 433 | if (imr & isr & (IMR_PRXEN | IMR_RBAEEN)) { |
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[7dbab720] | 434 | imr &= ~(IMR_PRXEN | IMR_RBAEEN); |
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[bfcf4cb3] | 435 | sc->rxInterrupts++; |
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| 436 | rtems_event_send (sc->rxDaemonTid, INTERRUPT_EVENT); |
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[f1f42b4] | 437 | (*sc->write_register)( rp, SONIC_REG_IMR, imr ); |
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| 438 | (*sc->write_register)( rp, SONIC_REG_ISR, isr & ISR_PKTRX ); |
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[c932d85] | 439 | } |
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| 440 | |
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| 441 | /* |
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| 442 | * Packet started, transmitter done or transmitter error? |
---|
[f1f42b4] | 443 | * TX interrupts only occur after an error or when all TDA's are |
---|
| 444 | * exhausted and we are waiting for buffer to come free. |
---|
[c932d85] | 445 | */ |
---|
[f1f42b4] | 446 | if (imr & isr & (IMR_PINTEN | IMR_TXEREN)) { |
---|
[bfcf4cb3] | 447 | sc->txInterrupts++; |
---|
| 448 | rtems_event_send (sc->txDaemonTid, INTERRUPT_EVENT); |
---|
[f1f42b4] | 449 | (*sc->write_register)( rp, SONIC_REG_ISR, ISR_PINT | ISR_TXDN | ISR_TXER ); |
---|
[c932d85] | 450 | } |
---|
[7dbab720] | 451 | |
---|
[c932d85] | 452 | } |
---|
| 453 | |
---|
| 454 | /* |
---|
| 455 | ****************************************************************** |
---|
| 456 | * * |
---|
| 457 | * Transmitter Routines * |
---|
| 458 | * * |
---|
| 459 | ****************************************************************** |
---|
| 460 | */ |
---|
| 461 | |
---|
| 462 | /* |
---|
| 463 | * Soak up transmit descriptors that have been sent. |
---|
| 464 | */ |
---|
[7fc5d54e] | 465 | |
---|
[bfcf4cb3] | 466 | SONIC_STATIC void sonic_retire_tda (struct sonic_softc *sc) |
---|
[c932d85] | 467 | { |
---|
[ee4f57d] | 468 | uint16_t status; |
---|
[c932d85] | 469 | unsigned int collisions; |
---|
[bfcf4cb3] | 470 | struct mbuf *m, *n; |
---|
[c932d85] | 471 | |
---|
| 472 | /* |
---|
| 473 | * Repeat for all completed transmit descriptors. |
---|
| 474 | */ |
---|
[f1f42b4] | 475 | while ((status = sc->tdaTail->status) != 0) { |
---|
[301a2a3c] | 476 | |
---|
[7d07970] | 477 | #if (SONIC_DEBUG & SONIC_DEBUG_DESCRIPTORS) |
---|
[bfcf4cb3] | 478 | printf( "retire TDA %p (0x%04x)\n", sc->tdaTail, status ); |
---|
[7d07970] | 479 | #endif |
---|
| 480 | |
---|
[9693fac4] | 481 | #if (SONIC_DEBUG & SONIC_DEBUG_ERRORS) |
---|
[7397638] | 482 | /* |
---|
[a3d3d9a] | 483 | * If there is an error that was not a collision, |
---|
[7397638] | 484 | * then someone may want to see it. |
---|
| 485 | */ |
---|
| 486 | |
---|
| 487 | if ( (status & ~(TDA_STATUS_COLLISION_MASK|TDA_STATUS_DEF)) != 0x0001 ) |
---|
[811115de] | 488 | printf( "ERROR: retire TDA %p (0x%08x)\n", |
---|
| 489 | sc->tdaTail, sc->tdaTail->status ); |
---|
[9693fac4] | 490 | #endif |
---|
| 491 | |
---|
[c932d85] | 492 | /* |
---|
| 493 | * Check for errors which stop the transmitter. |
---|
| 494 | */ |
---|
| 495 | if (status & (TDA_STATUS_EXD | |
---|
| 496 | TDA_STATUS_EXC | |
---|
| 497 | TDA_STATUS_FU | |
---|
| 498 | TDA_STATUS_BCM)) { |
---|
| 499 | /* |
---|
| 500 | * Restart the transmitter if there are |
---|
| 501 | * packets waiting to go. |
---|
| 502 | */ |
---|
[ee4f57d] | 503 | uint16_t link; |
---|
[7397638] | 504 | #if (SONIC_DEBUG & SONIC_DEBUG_ERRORS) |
---|
| 505 | printf("restarting sonic after error\n"); |
---|
| 506 | #endif |
---|
| 507 | |
---|
[bfcf4cb3] | 508 | link = *(sc->tdaTail->linkp); |
---|
[c932d85] | 509 | |
---|
| 510 | if ((link & TDA_LINK_EOL) == 0) { |
---|
[bfcf4cb3] | 511 | void *rp = sc->sonic; |
---|
[c932d85] | 512 | |
---|
[13cc89e1] | 513 | (*sc->write_register)( rp, SONIC_REG_CTDA, link ); |
---|
[f1f42b4] | 514 | sonic_command(sc, CR_TXP ); |
---|
[c932d85] | 515 | } |
---|
| 516 | } |
---|
| 517 | |
---|
| 518 | /* |
---|
| 519 | * Update network statistics |
---|
| 520 | */ |
---|
| 521 | collisions = (status & TDA_STATUS_COLLISION_MASK) >> TDA_STATUS_COLLISION_SHIFT; |
---|
| 522 | if (collisions) { |
---|
| 523 | if (collisions == 1) |
---|
[bfcf4cb3] | 524 | sc->txSingleCollision++; |
---|
[c932d85] | 525 | else |
---|
[bfcf4cb3] | 526 | sc->txMultipleCollision++; |
---|
| 527 | sc->txCollision += collisions; |
---|
[c932d85] | 528 | } |
---|
| 529 | if (status & TDA_STATUS_EXC) |
---|
[bfcf4cb3] | 530 | sc->txExcessiveCollision++; |
---|
[c932d85] | 531 | if (status & TDA_STATUS_OWC) |
---|
[bfcf4cb3] | 532 | sc->txLateCollision++; |
---|
[c932d85] | 533 | if (status & TDA_STATUS_EXD) |
---|
[bfcf4cb3] | 534 | sc->txExcessiveDeferral++; |
---|
[c932d85] | 535 | if (status & TDA_STATUS_DEF) |
---|
[bfcf4cb3] | 536 | sc->txDeferred++; |
---|
[c932d85] | 537 | if (status & TDA_STATUS_FU) |
---|
[bfcf4cb3] | 538 | sc->txUnderrun++; |
---|
[c932d85] | 539 | if (status & TDA_STATUS_CRSL) |
---|
[bfcf4cb3] | 540 | sc->txLostCarrier++; |
---|
[c932d85] | 541 | |
---|
| 542 | /* |
---|
[ae320e0] | 543 | * Free the packet and reset a couple of fields |
---|
[c932d85] | 544 | */ |
---|
[811115de] | 545 | m = sc->tdaTail->mbufp; |
---|
| 546 | while ( m ) { |
---|
| 547 | MFREE(m, n); |
---|
| 548 | m = n; |
---|
| 549 | } |
---|
[c932d85] | 550 | |
---|
[f1f42b4] | 551 | /* |
---|
[bfcf4cb3] | 552 | sc->tdaTail->frag[0].frag_link = LSW(sc->tdaTail->link_pad); |
---|
| 553 | sc->tdaTail->frag_count = 0; |
---|
[f1f42b4] | 554 | */ |
---|
| 555 | sc->tdaTail->status = 0; |
---|
[339737b] | 556 | |
---|
[c932d85] | 557 | /* |
---|
| 558 | * Move to the next transmit descriptor |
---|
| 559 | */ |
---|
[bfcf4cb3] | 560 | sc->tdaTail = sc->tdaTail->next; |
---|
[7d07970] | 561 | #if (SONIC_DEBUG & SONIC_DEBUG_DESCRIPTORS) |
---|
[bfcf4cb3] | 562 | printf( "next TDA %p\n", sc->tdaTail ); |
---|
[7d07970] | 563 | #endif |
---|
[c932d85] | 564 | } |
---|
| 565 | } |
---|
| 566 | |
---|
| 567 | /* |
---|
[bfcf4cb3] | 568 | * Send packet |
---|
[c932d85] | 569 | */ |
---|
[bfcf4cb3] | 570 | SONIC_STATIC void sonic_sendpacket (struct ifnet *ifp, struct mbuf *m) |
---|
[c932d85] | 571 | { |
---|
[bfcf4cb3] | 572 | struct sonic_softc *sc = ifp->if_softc; |
---|
| 573 | struct mbuf *l = NULL; |
---|
[c932d85] | 574 | TransmitDescriptorPointer_t tdp; |
---|
| 575 | volatile struct TransmitDescriptorFragLink *fp; |
---|
| 576 | unsigned int packetSize; |
---|
| 577 | int i; |
---|
[f1f42b4] | 578 | rtems_event_set events; |
---|
[c932d85] | 579 | static char padBuf[64]; |
---|
| 580 | |
---|
[7397638] | 581 | /* printf( "sonic_sendpacket %p\n", m ); */ |
---|
[f1f42b4] | 582 | |
---|
| 583 | |
---|
[c932d85] | 584 | /* |
---|
[f1f42b4] | 585 | * Wait for transmit descriptor to become available. Only retire TDA's |
---|
| 586 | * if there are no more free buffers to minimize TX latency. Retire TDA'a |
---|
| 587 | * on the way out. |
---|
[c932d85] | 588 | */ |
---|
| 589 | |
---|
[f1f42b4] | 590 | while (sc->tdaHead->next->status != 0) { |
---|
[a3d3d9a] | 591 | |
---|
[c932d85] | 592 | /* |
---|
[f1f42b4] | 593 | * Free up transmit descriptors |
---|
[c932d85] | 594 | */ |
---|
[bfcf4cb3] | 595 | sonic_retire_tda (sc); |
---|
[f1f42b4] | 596 | |
---|
[a3d3d9a] | 597 | if (sc->tdaHead->next->status == 0) |
---|
[f1f42b4] | 598 | break; |
---|
[7397638] | 599 | |
---|
| 600 | #if (SONIC_DEBUG & SONIC_DEBUG_ERRORS) |
---|
[f1f42b4] | 601 | printf("blocking until TDAs are available\n"); |
---|
[7397638] | 602 | #endif |
---|
[c932d85] | 603 | /* |
---|
[f1f42b4] | 604 | * Enable PINT interrupts. |
---|
| 605 | sonic_clear_interrupts( sc, ISR_PINT ); |
---|
| 606 | sonic_enable_interrupts( sc, IMR_PINTEN ); |
---|
[c932d85] | 607 | */ |
---|
| 608 | |
---|
| 609 | /* |
---|
[f1f42b4] | 610 | * Wait for PINT TX interrupt. Every fourth TX buffer will raise PINT. |
---|
[c932d85] | 611 | */ |
---|
[f1f42b4] | 612 | rtems_bsdnet_event_receive (INTERRUPT_EVENT, |
---|
[c932d85] | 613 | RTEMS_WAIT|RTEMS_EVENT_ANY, |
---|
[bfcf4cb3] | 614 | RTEMS_NO_TIMEOUT, |
---|
| 615 | &events); |
---|
[f1f42b4] | 616 | sonic_disable_interrupts( sc, IMR_PINTEN ); |
---|
| 617 | sonic_retire_tda (sc); |
---|
[c932d85] | 618 | } |
---|
| 619 | |
---|
| 620 | /* |
---|
| 621 | * Fill in the transmit descriptor fragment descriptors. |
---|
| 622 | * ===CACHE=== |
---|
| 623 | * If data cache is operating in write-back mode, flush cached |
---|
| 624 | * data to memory. |
---|
| 625 | */ |
---|
[bfcf4cb3] | 626 | tdp = sc->tdaHead->next; |
---|
| 627 | tdp->mbufp = m; |
---|
[c932d85] | 628 | packetSize = 0; |
---|
| 629 | fp = tdp->frag; |
---|
| 630 | for (i = 0 ; i < MAXIMUM_FRAGS_PER_DESCRIPTOR ; i++, fp++) { |
---|
[bfcf4cb3] | 631 | /* |
---|
| 632 | * Throw away empty mbufs |
---|
| 633 | */ |
---|
| 634 | if (m->m_len) { |
---|
| 635 | void *p = mtod (m, void *); |
---|
| 636 | fp->frag_lsw = LSW(p); |
---|
| 637 | fp->frag_msw = MSW(p); |
---|
| 638 | fp->frag_size = m->m_len; |
---|
| 639 | packetSize += m->m_len; |
---|
[301a2a3c] | 640 | #if (SONIC_DEBUG & SONIC_DEBUG_FRAGMENTS) |
---|
[7dbab720] | 641 | printf( "fp %p 0x%04x%04x %d=%d .. %d\n", |
---|
| 642 | fp, fp->frag_msw, fp->frag_lsw, fp->frag_size, m->m_len, packetSize ); |
---|
[301a2a3c] | 643 | #endif |
---|
[7dbab720] | 644 | #if (SONIC_DEBUG & SONIC_DEBUG_DUMP_TX_MBUFS) |
---|
[d6236b41] | 645 | rtems_print_buffer( |
---|
[7dbab720] | 646 | p, |
---|
| 647 | (fp->frag_size > MAXIMUM_FRAME_SIZE) ? MAXIMUM_FRAME_SIZE : fp->frag_size |
---|
| 648 | ); |
---|
| 649 | #endif |
---|
| 650 | l = m; |
---|
| 651 | m = m->m_next; |
---|
[bfcf4cb3] | 652 | } |
---|
| 653 | else { |
---|
| 654 | struct mbuf *n; |
---|
| 655 | MFREE (m, n); |
---|
| 656 | m = n; |
---|
| 657 | if (l != NULL) |
---|
| 658 | l->m_next = m; |
---|
| 659 | } |
---|
[c932d85] | 660 | /* |
---|
| 661 | * Break out of the loop if this mbuf is the last in the frame. |
---|
| 662 | */ |
---|
[bfcf4cb3] | 663 | if (m == NULL) |
---|
[c932d85] | 664 | break; |
---|
| 665 | } |
---|
| 666 | |
---|
| 667 | /* |
---|
| 668 | * Pad short packets. |
---|
| 669 | */ |
---|
| 670 | if ((packetSize < 64) && (i < MAXIMUM_FRAGS_PER_DESCRIPTOR)) { |
---|
| 671 | int padSize = 64 - packetSize; |
---|
[301a2a3c] | 672 | fp++; |
---|
[c932d85] | 673 | fp->frag_lsw = LSW(padBuf); |
---|
| 674 | fp->frag_msw = MSW(padBuf); |
---|
| 675 | fp->frag_size = padSize; |
---|
[301a2a3c] | 676 | #if (SONIC_DEBUG & SONIC_DEBUG_FRAGMENTS) |
---|
| 677 | printf( "PAD fp %p 0x%04x%04x %d\n", |
---|
| 678 | fp, fp->frag_msw, fp->frag_lsw, fp->frag_size ); |
---|
| 679 | #endif |
---|
[c932d85] | 680 | packetSize += padSize; |
---|
| 681 | i++; |
---|
| 682 | } |
---|
| 683 | |
---|
| 684 | /* |
---|
| 685 | * Fill Transmit Descriptor |
---|
| 686 | */ |
---|
| 687 | tdp->pkt_size = packetSize; |
---|
[301a2a3c] | 688 | tdp->frag_count = i + 1; |
---|
[c932d85] | 689 | tdp->status = 0; |
---|
| 690 | |
---|
| 691 | /* |
---|
| 692 | * Chain onto list and start transmission. |
---|
| 693 | */ |
---|
[339737b] | 694 | |
---|
[301a2a3c] | 695 | tdp->linkp = &(fp+1)->frag_link; |
---|
[c932d85] | 696 | *tdp->linkp = LSW(tdp->next) | TDA_LINK_EOL; |
---|
[bfcf4cb3] | 697 | if ( sc->tdaHead->frag_count ) |
---|
| 698 | *sc->tdaHead->linkp &= ~TDA_LINK_EOL; |
---|
| 699 | sc->tdaHead = tdp; |
---|
[0c0419a1] | 700 | |
---|
[f1f42b4] | 701 | /* Start transmission */ |
---|
| 702 | |
---|
| 703 | sonic_command(sc, CR_TXP ); |
---|
| 704 | |
---|
| 705 | /* |
---|
| 706 | * Free up transmit descriptors on the way out. |
---|
| 707 | */ |
---|
| 708 | sonic_retire_tda (sc); |
---|
[bfcf4cb3] | 709 | } |
---|
[c932d85] | 710 | |
---|
[bfcf4cb3] | 711 | /* |
---|
| 712 | * Driver transmit daemon |
---|
| 713 | */ |
---|
| 714 | SONIC_STATIC void sonic_txDaemon (void *arg) |
---|
| 715 | { |
---|
| 716 | struct sonic_softc *sc = (struct sonic_softc *)arg; |
---|
| 717 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
| 718 | struct mbuf *m; |
---|
| 719 | rtems_event_set events; |
---|
| 720 | |
---|
| 721 | for (;;) { |
---|
| 722 | /* |
---|
| 723 | * Wait for packet |
---|
| 724 | */ |
---|
| 725 | rtems_bsdnet_event_receive ( |
---|
| 726 | START_TRANSMIT_EVENT, |
---|
| 727 | RTEMS_EVENT_ANY | RTEMS_WAIT, |
---|
| 728 | RTEMS_NO_TIMEOUT, |
---|
| 729 | &events |
---|
| 730 | ); |
---|
[c153a7b] | 731 | |
---|
[bfcf4cb3] | 732 | /* |
---|
| 733 | * Send packets till queue is empty |
---|
| 734 | */ |
---|
| 735 | for (;;) { |
---|
| 736 | /* |
---|
| 737 | * Get the next mbuf chain to transmit. |
---|
| 738 | */ |
---|
| 739 | IF_DEQUEUE(&ifp->if_snd, m); |
---|
| 740 | if (!m) |
---|
| 741 | break; |
---|
| 742 | sonic_sendpacket (ifp, m); |
---|
| 743 | } |
---|
| 744 | ifp->if_flags &= ~IFF_OACTIVE; |
---|
| 745 | } |
---|
[c932d85] | 746 | } |
---|
| 747 | |
---|
| 748 | /* |
---|
| 749 | ****************************************************************** |
---|
| 750 | * * |
---|
| 751 | * Receiver Routines * |
---|
| 752 | * * |
---|
| 753 | ****************************************************************** |
---|
| 754 | */ |
---|
| 755 | |
---|
| 756 | /* |
---|
| 757 | * Wait for SONIC to hand over a Receive Descriptor. |
---|
| 758 | */ |
---|
[7fc5d54e] | 759 | |
---|
| 760 | SONIC_STATIC void sonic_rda_wait( |
---|
[bfcf4cb3] | 761 | struct sonic_softc *sc, |
---|
[7fc5d54e] | 762 | ReceiveDescriptorPointer_t rdp |
---|
| 763 | ) |
---|
[c932d85] | 764 | { |
---|
| 765 | int i; |
---|
[bfcf4cb3] | 766 | void *rp = sc->sonic; |
---|
| 767 | rtems_event_set events; |
---|
[c932d85] | 768 | |
---|
| 769 | /* |
---|
| 770 | * Wait for Receive Descriptor. |
---|
| 771 | * The order of the tests is very important. |
---|
| 772 | * The RDA is checked after RBAE is detected. This ensures that |
---|
| 773 | * the driver processes all RDA entries before reusing the RRA |
---|
| 774 | * entry holding the giant packet. |
---|
| 775 | * The event wait is done after the RDA and RBAE checks. This |
---|
| 776 | * catches the possibility that a Receive Descriptor became ready |
---|
| 777 | * between the call to this function and the clearing of the |
---|
| 778 | * interrupt status register bit. |
---|
| 779 | */ |
---|
| 780 | for (;;) { |
---|
| 781 | /* |
---|
| 782 | * Has a giant packet arrived? |
---|
| 783 | * The National DP83932C data sheet is very vague on what |
---|
| 784 | * happens under this condition. The description of the |
---|
| 785 | * Interrupt Status Register (Section 4.3.6) states, |
---|
| 786 | * ``Reception is aborted and the SONIC fetches the next |
---|
| 787 | * available resource descriptors in the RRA. The buffer |
---|
| 788 | * space is not re-used and an RDA is not setup for the |
---|
| 789 | * truncated packet.'' |
---|
| 790 | * I take ``Reception is aborted'' to mean that the RXEN |
---|
| 791 | * bit in the Command Register is cleared and must be set |
---|
| 792 | * by the driver to begin reception again. |
---|
| 793 | * Unfortunately, an alternative interpretation could be |
---|
| 794 | * that only reception of the current packet is aborted. |
---|
| 795 | * This would be more difficult to recover from.... |
---|
| 796 | */ |
---|
[13cc89e1] | 797 | if ((*sc->read_register)( rp, SONIC_REG_ISR ) & ISR_RBAE) { |
---|
[9693fac4] | 798 | |
---|
| 799 | #if (SONIC_DEBUG & SONIC_DEBUG_ERRORS) |
---|
| 800 | printf( "ERROR: looks like a giant packet -- RBAE\n" ); |
---|
| 801 | #endif |
---|
| 802 | |
---|
[c932d85] | 803 | /* |
---|
| 804 | * One more check to soak up any Receive Descriptors |
---|
| 805 | * that may already have been handed back to the driver. |
---|
| 806 | */ |
---|
[9693fac4] | 807 | if (rdp->in_use == RDA_IN_USE) { |
---|
| 808 | #if (SONIC_DEBUG & SONIC_DEBUG_ERRORS) |
---|
| 809 | printf( "ERROR: nope just an RBAE\n" ); |
---|
| 810 | #endif |
---|
[c932d85] | 811 | break; |
---|
[9693fac4] | 812 | } |
---|
[c932d85] | 813 | |
---|
| 814 | /* |
---|
| 815 | * Check my interpretation of the SONIC manual. |
---|
| 816 | */ |
---|
[13cc89e1] | 817 | if ((*sc->read_register)( rp, SONIC_REG_CR ) & CR_RXEN) |
---|
[c932d85] | 818 | rtems_panic ("SONIC RBAE/RXEN"); |
---|
| 819 | |
---|
| 820 | /* |
---|
| 821 | * Update statistics |
---|
| 822 | */ |
---|
[bfcf4cb3] | 823 | sc->rxGiant++; |
---|
[c932d85] | 824 | |
---|
| 825 | /* |
---|
| 826 | * Reuse receive buffer. |
---|
| 827 | * Again, the manual is subject to interpretation. The |
---|
| 828 | * RRP register is described as, `the lower address of |
---|
| 829 | * the next descriptor the SONIC will read.'' |
---|
| 830 | * Since, acording to the ISR/RBAE notes, the SONIC has |
---|
| 831 | * ``fetched the next available resource descriptor in |
---|
| 832 | * the RRA'', I interpret this to mean that that the |
---|
| 833 | * driver has to move the RRP back *two* entries to |
---|
| 834 | * reuse the receive buffer holding the giant packet. |
---|
| 835 | */ |
---|
| 836 | for (i = 0 ; i < 2 ; i++) { |
---|
[13cc89e1] | 837 | if ((*sc->read_register)( rp, SONIC_REG_RRP ) == |
---|
| 838 | (*sc->read_register)( rp, SONIC_REG_RSA )) |
---|
| 839 | (*sc->write_register)( |
---|
[7fc5d54e] | 840 | rp, |
---|
| 841 | SONIC_REG_RRP, |
---|
[13cc89e1] | 842 | (*sc->read_register)( rp, SONIC_REG_REA ) |
---|
[7fc5d54e] | 843 | ); |
---|
[13cc89e1] | 844 | (*sc->write_register)( |
---|
[7fc5d54e] | 845 | rp, |
---|
| 846 | SONIC_REG_RRP, |
---|
[13cc89e1] | 847 | (*sc->read_register)(rp, SONIC_REG_RRP) - sizeof(ReceiveResource_t) |
---|
[7fc5d54e] | 848 | ); |
---|
[c932d85] | 849 | } |
---|
| 850 | |
---|
| 851 | /* |
---|
| 852 | * Restart reception |
---|
| 853 | */ |
---|
[f1f42b4] | 854 | sonic_clear_interrupts( sc, ISR_RBAE ); |
---|
| 855 | sonic_command( sc, CR_RXEN ); |
---|
[c932d85] | 856 | } |
---|
| 857 | |
---|
| 858 | /* |
---|
| 859 | * Has Receive Descriptor become available? |
---|
| 860 | */ |
---|
[e70a8f16] | 861 | if (rdp->in_use == RDA_IN_USE) |
---|
[c932d85] | 862 | break; |
---|
| 863 | |
---|
| 864 | /* |
---|
| 865 | * Enable interrupts. |
---|
| 866 | */ |
---|
[13cc89e1] | 867 | sonic_enable_interrupts( sc, (IMR_PRXEN | IMR_RBAEEN) ); |
---|
[c932d85] | 868 | |
---|
| 869 | /* |
---|
| 870 | * Wait for interrupt. |
---|
| 871 | */ |
---|
[bfcf4cb3] | 872 | rtems_bsdnet_event_receive( |
---|
| 873 | INTERRUPT_EVENT, |
---|
| 874 | RTEMS_WAIT|RTEMS_EVENT_ANY, |
---|
| 875 | RTEMS_NO_TIMEOUT, |
---|
| 876 | &events |
---|
| 877 | ); |
---|
[c932d85] | 878 | } |
---|
[4f38b713] | 879 | #if (SONIC_DEBUG & SONIC_DEBUG_DESCRIPTORS) |
---|
| 880 | printf( "RDA %p\n", rdp ); |
---|
| 881 | #endif |
---|
[9693fac4] | 882 | |
---|
| 883 | #if (SONIC_DEBUG & SONIC_DEBUG_ERRORS) |
---|
| 884 | if (rdp->status & 0x000E) |
---|
| 885 | printf( "ERROR: RDA %p (0x%04x)\n", rdp, rdp->status ); |
---|
| 886 | #endif |
---|
| 887 | |
---|
[c932d85] | 888 | } |
---|
| 889 | |
---|
[f6ef823a] | 890 | #ifdef CPU_U32_FIX |
---|
| 891 | |
---|
| 892 | /* |
---|
| 893 | * Routine to align the received packet so that the ip header |
---|
| 894 | * is on a 32-bit boundary. Necessary for cpu's that do not |
---|
| 895 | * allow unaligned loads and stores and when the 32-bit DMA |
---|
[a3d3d9a] | 896 | * mode is used. |
---|
| 897 | * |
---|
| 898 | * Transfers are done on word basis to avoid possibly slow byte |
---|
[f6ef823a] | 899 | * and half-word writes. |
---|
| 900 | */ |
---|
[a3d3d9a] | 901 | |
---|
[f6ef823a] | 902 | void ipalign(struct mbuf *m) |
---|
| 903 | { |
---|
| 904 | unsigned int *first, *last, data; |
---|
| 905 | unsigned int tmp = 0; |
---|
| 906 | |
---|
| 907 | if ((((int) m->m_data) & 2) && (m->m_len)) { |
---|
| 908 | last = (unsigned int *) ((((int) m->m_data) + m->m_len + 8) & ~3); |
---|
| 909 | first = (unsigned int *) (((int) m->m_data) & ~3); |
---|
| 910 | tmp = *first << 16; |
---|
| 911 | first++; |
---|
| 912 | do { |
---|
| 913 | data = *first; |
---|
| 914 | *first = tmp | (data >> 16); |
---|
| 915 | tmp = data << 16; |
---|
| 916 | first++; |
---|
| 917 | } while (first <= last); |
---|
| 918 | |
---|
| 919 | m->m_data = (caddr_t)(((int) m->m_data) + 2); |
---|
| 920 | } |
---|
| 921 | } |
---|
| 922 | #endif |
---|
| 923 | |
---|
[c932d85] | 924 | /* |
---|
[bfcf4cb3] | 925 | * SONIC reader task |
---|
[c932d85] | 926 | */ |
---|
[bfcf4cb3] | 927 | SONIC_STATIC void sonic_rxDaemon (void *arg) |
---|
[c932d85] | 928 | { |
---|
[bfcf4cb3] | 929 | struct sonic_softc *sc = (struct sonic_softc *)arg; |
---|
| 930 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
| 931 | void *rp = sc->sonic; |
---|
| 932 | struct mbuf *m; |
---|
[ee4f57d] | 933 | uint16_t status; |
---|
[dddc0557] | 934 | ReceiveDescriptorPointer_t rdp; |
---|
[c932d85] | 935 | ReceiveResourcePointer_t rwp, rea; |
---|
[ee4f57d] | 936 | uint16_t newMissedTally, oldMissedTally; |
---|
[c932d85] | 937 | |
---|
[bfcf4cb3] | 938 | rwp = sc->rsa; |
---|
| 939 | rea = sc->rea; |
---|
| 940 | rdp = sc->rda; |
---|
[c932d85] | 941 | |
---|
| 942 | /* |
---|
| 943 | * Start the receiver |
---|
| 944 | */ |
---|
[13cc89e1] | 945 | oldMissedTally = (*sc->read_register)( rp, SONIC_REG_MPT ); |
---|
[c932d85] | 946 | |
---|
| 947 | /* |
---|
| 948 | * Input packet handling loop |
---|
| 949 | */ |
---|
| 950 | for (;;) { |
---|
| 951 | /* |
---|
| 952 | * Wait till SONIC supplies a Receive Descriptor. |
---|
| 953 | */ |
---|
[e70a8f16] | 954 | if (rdp->in_use == RDA_FREE) { |
---|
[bfcf4cb3] | 955 | sonic_rda_wait (sc, rdp); |
---|
[c932d85] | 956 | } |
---|
| 957 | |
---|
[4f38b713] | 958 | #if (SONIC_DEBUG & SONIC_DEBUG_DESCRIPTORS) |
---|
| 959 | printf( "Incoming packet %p status=0x%04x\n", rdp, rdp->status ); |
---|
| 960 | #endif |
---|
[e70a8f16] | 961 | |
---|
[c932d85] | 962 | /* |
---|
| 963 | * Check that packet is valid |
---|
| 964 | */ |
---|
| 965 | status = rdp->status; |
---|
| 966 | if (status & RDA_STATUS_PRX) { |
---|
[bfcf4cb3] | 967 | struct ether_header *eh; |
---|
[c932d85] | 968 | void *p; |
---|
| 969 | |
---|
| 970 | /* |
---|
| 971 | * Pass the packet up the chain. |
---|
| 972 | * The mbuf count is reduced to remove |
---|
| 973 | * the frame check sequence at the end |
---|
| 974 | * of the packet. |
---|
| 975 | * ===CACHE=== |
---|
| 976 | * Invalidate cache entries for this memory. |
---|
| 977 | */ |
---|
[811115de] | 978 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY_DESCRIPTORS) |
---|
| 979 | sonic_print_rx_descriptor( rdp ); |
---|
[f1f42b4] | 980 | if ((LSW(rdp->mbufp->m_data) != rdp->pkt_lsw) |
---|
| 981 | || (MSW(rdp->mbufp->m_data) != rdp->pkt_msw)) |
---|
[a3d3d9a] | 982 | printf ("SONIC RDA/RRA %p, %08x\n",rdp->mbufp->m_data,(rdp->pkt_msw << 16) | |
---|
[f1f42b4] | 983 | (rdp->pkt_lsw & 0x0ffff)); |
---|
[811115de] | 984 | #endif |
---|
[f1f42b4] | 985 | rdp->byte_count &= 0x0ffff; /* ERC32 pollutes msb of byte_count */ |
---|
[7dbab720] | 986 | m = rdp->mbufp; |
---|
[bfcf4cb3] | 987 | m->m_len = m->m_pkthdr.len = rdp->byte_count - |
---|
[509fec9c] | 988 | sizeof(uint32_t) - |
---|
[bfcf4cb3] | 989 | sizeof(struct ether_header); |
---|
| 990 | eh = mtod (m, struct ether_header *); |
---|
| 991 | m->m_data += sizeof(struct ether_header); |
---|
[a3d3d9a] | 992 | |
---|
[f1f42b4] | 993 | #ifdef CPU_U32_FIX |
---|
| 994 | ipalign(m); /* Align packet on 32-bit boundary */ |
---|
| 995 | #endif |
---|
| 996 | |
---|
[7dbab720] | 997 | #if (SONIC_DEBUG & SONIC_DEBUG_DUMP_RX_MBUFS) |
---|
[d6236b41] | 998 | rtems_print_buffer( (void *) eh, sizeof(struct ether_header) ); |
---|
| 999 | rtems_print_buffer( (void *) m, 96 /* m->m_len*/ ); |
---|
[7dbab720] | 1000 | #endif |
---|
| 1001 | |
---|
[7397638] | 1002 | /* printf( "ether_input %p\n", m ); */ |
---|
[f1f42b4] | 1003 | /* |
---|
| 1004 | printf( "pkt %p, seq %04x, mbuf %p, m_data %p\n", rdp, rdp->seq_no, m, m->m_data ); |
---|
| 1005 | printf( "%u, %u\n", ((int*)m->m_data)[6], ((int*)m->m_data)[7]); |
---|
| 1006 | */ |
---|
[bfcf4cb3] | 1007 | ether_input (ifp, eh, m); |
---|
[f1f42b4] | 1008 | /* |
---|
| 1009 | */ |
---|
[c932d85] | 1010 | |
---|
| 1011 | /* |
---|
| 1012 | * Sanity check that Receive Resource Area is |
---|
| 1013 | * still in sync with Receive Descriptor Area |
---|
| 1014 | * The buffer reported in the Receive Descriptor |
---|
| 1015 | * should be the same as the buffer in the Receive |
---|
| 1016 | * Resource we are about to reuse. |
---|
| 1017 | */ |
---|
[dddc0557] | 1018 | /* XXX figure out whether this is valid or not */ |
---|
| 1019 | #if 0 |
---|
[c932d85] | 1020 | if ((LSW(p) != rwp->buff_ptr_lsw) |
---|
| 1021 | || (MSW(p) != rwp->buff_ptr_msw)) |
---|
| 1022 | rtems_panic ("SONIC RDA/RRA"); |
---|
[dddc0557] | 1023 | #endif |
---|
[c932d85] | 1024 | |
---|
| 1025 | /* |
---|
| 1026 | * Allocate a new mbuf. |
---|
| 1027 | */ |
---|
[7dbab720] | 1028 | |
---|
[bfcf4cb3] | 1029 | MGETHDR (m, M_WAIT, MT_DATA); |
---|
| 1030 | MCLGET (m, M_WAIT); |
---|
| 1031 | m->m_pkthdr.rcvif = ifp; |
---|
[7dbab720] | 1032 | rdp->mbufp = m; |
---|
[bfcf4cb3] | 1033 | p = mtod (m, void *); |
---|
[c932d85] | 1034 | |
---|
| 1035 | /* |
---|
| 1036 | * Reuse Receive Resource. |
---|
| 1037 | */ |
---|
[7dbab720] | 1038 | |
---|
[bfcf4cb3] | 1039 | rwp->buff_ptr_lsw = LSW(p); |
---|
| 1040 | rwp->buff_ptr_msw = MSW(p); |
---|
[7dbab720] | 1041 | rwp->buff_wc_lsw = RBUF_WC; |
---|
| 1042 | rwp->buff_wc_msw = 0; |
---|
[c932d85] | 1043 | rwp++; |
---|
[7dbab720] | 1044 | |
---|
[4f38b713] | 1045 | if (rwp == rea) { |
---|
| 1046 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY) |
---|
[bfcf4cb3] | 1047 | printf( "Wrapping RWP from %p to %p\n", rwp, sc->rsa ); |
---|
[4f38b713] | 1048 | #endif |
---|
[bfcf4cb3] | 1049 | rwp = sc->rsa; |
---|
[4f38b713] | 1050 | } |
---|
[13cc89e1] | 1051 | (*sc->write_register)( rp, SONIC_REG_RWP , LSW(rwp) ); |
---|
[c932d85] | 1052 | |
---|
| 1053 | /* |
---|
| 1054 | * Tell the SONIC to reread the RRA. |
---|
| 1055 | */ |
---|
[13cc89e1] | 1056 | if ((*sc->read_register)( rp, SONIC_REG_ISR ) & ISR_RBE) |
---|
[f1f42b4] | 1057 | sonic_clear_interrupts( sc, ISR_RBE ); |
---|
[c932d85] | 1058 | } |
---|
| 1059 | else { |
---|
| 1060 | if (status & RDA_STATUS_COL) |
---|
[bfcf4cb3] | 1061 | sc->rxCollision++; |
---|
[c932d85] | 1062 | if (status & RDA_STATUS_FAER) |
---|
[bfcf4cb3] | 1063 | sc->rxNonOctet++; |
---|
[c932d85] | 1064 | else if (status & RDA_STATUS_CRCR) |
---|
[bfcf4cb3] | 1065 | sc->rxBadCRC++; |
---|
[c932d85] | 1066 | } |
---|
| 1067 | |
---|
| 1068 | /* |
---|
| 1069 | * Count missed packets |
---|
| 1070 | */ |
---|
[13cc89e1] | 1071 | newMissedTally = (*sc->read_register)( rp, SONIC_REG_MPT ); |
---|
[c932d85] | 1072 | if (newMissedTally != oldMissedTally) { |
---|
[bfcf4cb3] | 1073 | sc->rxMissed += (newMissedTally - oldMissedTally) & 0xFFFF; |
---|
[c932d85] | 1074 | newMissedTally = oldMissedTally; |
---|
| 1075 | } |
---|
| 1076 | |
---|
| 1077 | /* |
---|
[f1f42b4] | 1078 | * Move to next receive descriptor and update EOL |
---|
[c932d85] | 1079 | */ |
---|
[7dbab720] | 1080 | |
---|
[f1f42b4] | 1081 | rdp->link |= RDA_LINK_EOL; |
---|
[e70a8f16] | 1082 | rdp->in_use = RDA_FREE; |
---|
[f1f42b4] | 1083 | sc->rdp_last->link &= ~RDA_LINK_EOL; |
---|
| 1084 | sc->rdp_last = rdp; |
---|
[c932d85] | 1085 | rdp = rdp->next; |
---|
[7dbab720] | 1086 | |
---|
[c932d85] | 1087 | } |
---|
| 1088 | } |
---|
| 1089 | |
---|
| 1090 | /* |
---|
| 1091 | ****************************************************************** |
---|
| 1092 | * * |
---|
| 1093 | * Initialization Routines * |
---|
| 1094 | * * |
---|
| 1095 | ****************************************************************** |
---|
| 1096 | */ |
---|
| 1097 | |
---|
| 1098 | /* |
---|
| 1099 | * Initialize the SONIC hardware |
---|
| 1100 | */ |
---|
[bfcf4cb3] | 1101 | SONIC_STATIC void sonic_initialize_hardware(struct sonic_softc *sc) |
---|
[c932d85] | 1102 | { |
---|
[bfcf4cb3] | 1103 | void *rp = sc->sonic; |
---|
[c932d85] | 1104 | int i; |
---|
| 1105 | unsigned char *hwaddr; |
---|
[339737b] | 1106 | TransmitDescriptorPointer_t tdp; |
---|
[dddc0557] | 1107 | ReceiveDescriptorPointer_t ordp, rdp; |
---|
[4f38b713] | 1108 | ReceiveResourcePointer_t rwp; |
---|
[bfcf4cb3] | 1109 | struct mbuf *m; |
---|
| 1110 | void *p; |
---|
[301a2a3c] | 1111 | CamDescriptorPointer_t cdp; |
---|
[c932d85] | 1112 | |
---|
[e70a8f16] | 1113 | /* |
---|
| 1114 | * The Revision B SONIC has a horrible bug known as the "Zero |
---|
| 1115 | * Length Packet bug". The initial board used to develop this |
---|
| 1116 | * driver had a newer revision of the SONIC so there was no reason |
---|
| 1117 | * to check for this. If you have the Revision B SONIC chip, then |
---|
| 1118 | * you need to add some code to the RX path to handle this weirdness. |
---|
| 1119 | */ |
---|
| 1120 | |
---|
[f1f42b4] | 1121 | if ( (*sc->read_register)( rp, SONIC_REG_SR ) <= SONIC_REVISION_B ) { |
---|
[e70a8f16] | 1122 | rtems_fatal_error_occurred( 0x0BADF00D ); /* don't eat this part :) */ |
---|
| 1123 | } |
---|
[a3d3d9a] | 1124 | |
---|
[c932d85] | 1125 | /* |
---|
[dddc0557] | 1126 | * Set up circular linked list in Transmit Descriptor Area. |
---|
| 1127 | * Use the PINT bit in the transmit configuration field to |
---|
| 1128 | * request an interrupt on every other transmitted packet. |
---|
| 1129 | * |
---|
| 1130 | * NOTE: sonic_allocate() zeroes all of the memory allocated. |
---|
[c932d85] | 1131 | */ |
---|
[dddc0557] | 1132 | |
---|
[bfcf4cb3] | 1133 | sc->tdaTail = sonic_allocate(sc->tdaCount * sizeof *tdp); |
---|
[e995f3a1] | 1134 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY) |
---|
[bfcf4cb3] | 1135 | printf( "tdaTail = %p\n", sc->tdaTail ); |
---|
[e995f3a1] | 1136 | #endif |
---|
[bfcf4cb3] | 1137 | tdp = sc->tdaTail; |
---|
| 1138 | for (i = 0 ; i < sc->tdaCount ; i++) { |
---|
[7dbab720] | 1139 | /* |
---|
[a3d3d9a] | 1140 | * Start off with the table of outstanding mbuf's |
---|
[7dbab720] | 1141 | */ |
---|
| 1142 | |
---|
[301a2a3c] | 1143 | /* |
---|
[a3d3d9a] | 1144 | * status, pkt_config, pkt_size, and all fragment fields |
---|
[301a2a3c] | 1145 | * are set to zero by sonic_allocate. |
---|
| 1146 | */ |
---|
| 1147 | |
---|
[ae320e0] | 1148 | /* XXX not used by the BSD drivers |
---|
[f1f42b4] | 1149 | tdp->frag[0].frag_link = LSW(tdp + 1); |
---|
[7397638] | 1150 | */ |
---|
[f1f42b4] | 1151 | if (i & 3) |
---|
[dddc0557] | 1152 | tdp->pkt_config = TDA_CONFIG_PINT; |
---|
[301a2a3c] | 1153 | |
---|
[f1f42b4] | 1154 | tdp->status = 0; |
---|
| 1155 | tdp->frag_count = 0; |
---|
| 1156 | tdp->link_pad = LSW(tdp + 1) | TDA_LINK_EOL; |
---|
| 1157 | tdp->linkp = &((tdp + 1)->frag[0].frag_link); |
---|
| 1158 | tdp->next = (TransmitDescriptor_t *)(tdp + 1); |
---|
[811115de] | 1159 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY_DESCRIPTORS) |
---|
| 1160 | sonic_print_tx_descriptor( tdp ); |
---|
| 1161 | #endif |
---|
[301a2a3c] | 1162 | tdp++; |
---|
[dddc0557] | 1163 | } |
---|
[339737b] | 1164 | tdp--; |
---|
[bfcf4cb3] | 1165 | sc->tdaHead = tdp; |
---|
| 1166 | tdp->link_pad = LSW(sc->tdaTail) | TDA_LINK_EOL; |
---|
| 1167 | tdp->next = (TransmitDescriptor_t *)sc->tdaTail; |
---|
| 1168 | tdp->linkp = &sc->tdaTail->frag[0].frag_link; |
---|
[dddc0557] | 1169 | |
---|
| 1170 | /* |
---|
| 1171 | * Set up circular linked list in Receive Descriptor Area. |
---|
[bfcf4cb3] | 1172 | * Leaves sc->rda pointing at the `beginning' of the list. |
---|
[301a2a3c] | 1173 | * |
---|
| 1174 | * NOTE: The RDA and CDP must have the same MSW for their addresses. |
---|
[dddc0557] | 1175 | */ |
---|
| 1176 | |
---|
[bfcf4cb3] | 1177 | sc->rda = sonic_allocate( |
---|
[a3d3d9a] | 1178 | (sc->rdaCount * sizeof(ReceiveDescriptor_t)) + |
---|
[301a2a3c] | 1179 | sizeof(CamDescriptor_t) ); |
---|
[bfcf4cb3] | 1180 | sc->cdp = (CamDescriptorPointer_t) ((unsigned char *)sc->rda + |
---|
| 1181 | (sc->rdaCount * sizeof(ReceiveDescriptor_t))); |
---|
[e995f3a1] | 1182 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY) |
---|
[bfcf4cb3] | 1183 | printf( "rda area = %p\n", sc->rda ); |
---|
| 1184 | printf( "cdp area = %p\n", sc->cdp ); |
---|
[e995f3a1] | 1185 | #endif |
---|
[e70a8f16] | 1186 | |
---|
[bfcf4cb3] | 1187 | ordp = rdp = sc->rda; |
---|
| 1188 | for (i = 0 ; i < sc->rdaCount ; i++) { |
---|
[dddc0557] | 1189 | /* |
---|
[e70a8f16] | 1190 | * status, byte_count, pkt_ptr0, pkt_ptr1, and seq_no are set |
---|
| 1191 | * to zero by sonic_allocate. |
---|
[dddc0557] | 1192 | */ |
---|
[e70a8f16] | 1193 | rdp->link = LSW(rdp + 1); |
---|
| 1194 | rdp->in_use = RDA_FREE; |
---|
| 1195 | rdp->next = (ReceiveDescriptor_t *)(rdp + 1); |
---|
[dddc0557] | 1196 | ordp = rdp; |
---|
[e70a8f16] | 1197 | rdp++; |
---|
[dddc0557] | 1198 | } |
---|
[e70a8f16] | 1199 | /* |
---|
| 1200 | * Link the last desriptor to the 1st one and mark it as the end |
---|
| 1201 | * of the list. |
---|
| 1202 | */ |
---|
[bfcf4cb3] | 1203 | ordp->next = sc->rda; |
---|
| 1204 | ordp->link = LSW(sc->rda) | RDA_LINK_EOL; |
---|
[f1f42b4] | 1205 | sc->rdp_last = ordp; |
---|
[a3d3d9a] | 1206 | |
---|
[dddc0557] | 1207 | /* |
---|
| 1208 | * Allocate the receive resource area. |
---|
| 1209 | * In accordance with National Application Note 746, make the |
---|
| 1210 | * receive resource area bigger than the receive descriptor area. |
---|
| 1211 | * This has the useful side effect of making the receive resource |
---|
| 1212 | * area big enough to hold the CAM descriptor area. |
---|
| 1213 | */ |
---|
[e995f3a1] | 1214 | |
---|
[bfcf4cb3] | 1215 | sc->rsa = sonic_allocate((sc->rdaCount + RRA_EXTRA_COUNT) * sizeof *sc->rsa); |
---|
[e995f3a1] | 1216 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY) |
---|
[bfcf4cb3] | 1217 | printf( "rsa area = %p\n", sc->rsa ); |
---|
[dddc0557] | 1218 | #endif |
---|
| 1219 | |
---|
| 1220 | /* |
---|
| 1221 | * Set up list in Receive Resource Area. |
---|
| 1222 | * Allocate space for incoming packets. |
---|
| 1223 | */ |
---|
| 1224 | |
---|
[bfcf4cb3] | 1225 | rwp = sc->rsa; |
---|
| 1226 | for (i = 0 ; i < (sc->rdaCount + RRA_EXTRA_COUNT) ; i++, rwp++) { |
---|
[dddc0557] | 1227 | |
---|
| 1228 | /* |
---|
| 1229 | * Allocate memory for buffer. |
---|
| 1230 | * Place a pointer to the mbuf at the beginning of the buffer |
---|
| 1231 | * so we can find the mbuf when the SONIC returns the buffer |
---|
| 1232 | * to the driver. |
---|
| 1233 | */ |
---|
[a3d3d9a] | 1234 | |
---|
[bfcf4cb3] | 1235 | MGETHDR (m, M_WAIT, MT_DATA); |
---|
| 1236 | MCLGET (m, M_WAIT); |
---|
| 1237 | m->m_pkthdr.rcvif = &sc->arpcom.ac_if; |
---|
[7dbab720] | 1238 | sc->rda[i].mbufp = m; |
---|
[bfcf4cb3] | 1239 | |
---|
| 1240 | p = mtod (m, void *); |
---|
[dddc0557] | 1241 | |
---|
| 1242 | /* |
---|
| 1243 | * Set up RRA entry |
---|
| 1244 | */ |
---|
[bfcf4cb3] | 1245 | rwp->buff_ptr_lsw = LSW(p); |
---|
| 1246 | rwp->buff_ptr_msw = MSW(p); |
---|
[dddc0557] | 1247 | rwp->buff_wc_lsw = RBUF_WC; |
---|
| 1248 | rwp->buff_wc_msw = 0; |
---|
[811115de] | 1249 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY_DESCRIPTORS) |
---|
| 1250 | sonic_print_rx_descriptor( &sc->rda[i] ); |
---|
| 1251 | #endif |
---|
[dddc0557] | 1252 | } |
---|
[bfcf4cb3] | 1253 | sc->rea = rwp; |
---|
[4f38b713] | 1254 | #if (SONIC_DEBUG & SONIC_DEBUG_MEMORY) |
---|
[bfcf4cb3] | 1255 | printf( "rea area = %p\n", sc->rea ); |
---|
[4f38b713] | 1256 | #endif |
---|
| 1257 | |
---|
[dddc0557] | 1258 | |
---|
| 1259 | /* |
---|
| 1260 | * Issue a software reset. |
---|
| 1261 | */ |
---|
[13cc89e1] | 1262 | (*sc->write_register)( rp, SONIC_REG_CR, CR_RST | CR_STP | CR_RXDIS | CR_HTX ); |
---|
[c932d85] | 1263 | |
---|
| 1264 | /* |
---|
| 1265 | * Set up data configuration registers. |
---|
| 1266 | */ |
---|
[13cc89e1] | 1267 | (*sc->write_register)( rp, SONIC_REG_DCR, sc->dcr_value ); |
---|
| 1268 | (*sc->write_register)( rp, SONIC_REG_DCR2, sc->dc2_value ); |
---|
[dddc0557] | 1269 | |
---|
[13cc89e1] | 1270 | (*sc->write_register)( rp, SONIC_REG_CR, CR_STP | CR_RXDIS | CR_HTX ); |
---|
[c932d85] | 1271 | |
---|
| 1272 | /* |
---|
[7fc5d54e] | 1273 | * Mask all interrupts |
---|
[c932d85] | 1274 | */ |
---|
[13cc89e1] | 1275 | (*sc->write_register)( rp, SONIC_REG_IMR, 0x0 ); /* XXX was backwards */ |
---|
[7fc5d54e] | 1276 | |
---|
[c932d85] | 1277 | /* |
---|
| 1278 | * Clear outstanding interrupts. |
---|
| 1279 | */ |
---|
[13cc89e1] | 1280 | (*sc->write_register)( rp, SONIC_REG_ISR, 0x7FFF ); |
---|
[c932d85] | 1281 | |
---|
[7fc5d54e] | 1282 | /* |
---|
[dddc0557] | 1283 | * Clear the tally counters |
---|
[7fc5d54e] | 1284 | */ |
---|
[dddc0557] | 1285 | |
---|
[13cc89e1] | 1286 | (*sc->write_register)( rp, SONIC_REG_CRCT, 0xFFFF ); |
---|
| 1287 | (*sc->write_register)( rp, SONIC_REG_FAET, 0xFFFF ); |
---|
| 1288 | (*sc->write_register)( rp, SONIC_REG_MPT, 0xFFFF ); |
---|
| 1289 | (*sc->write_register)( rp, SONIC_REG_RSC, 0 ); |
---|
[dddc0557] | 1290 | |
---|
[c932d85] | 1291 | /* |
---|
[dddc0557] | 1292 | * Set the Receiver mode |
---|
| 1293 | * |
---|
| 1294 | * Enable/disable reception of broadcast packets |
---|
[c932d85] | 1295 | */ |
---|
[dddc0557] | 1296 | |
---|
[bfcf4cb3] | 1297 | if (sc->acceptBroadcast) |
---|
[13cc89e1] | 1298 | (*sc->write_register)( rp, SONIC_REG_RCR, RCR_BRD ); |
---|
[dddc0557] | 1299 | else |
---|
[13cc89e1] | 1300 | (*sc->write_register)( rp, SONIC_REG_RCR, 0 ); |
---|
[dddc0557] | 1301 | |
---|
| 1302 | /* |
---|
| 1303 | * Set up Resource Area pointers |
---|
| 1304 | */ |
---|
[301a2a3c] | 1305 | |
---|
[13cc89e1] | 1306 | (*sc->write_register)( rp, SONIC_REG_URRA, MSW(sc->rsa) ); |
---|
| 1307 | (*sc->write_register)( rp, SONIC_REG_RSA, LSW(sc->rsa) ); |
---|
[dddc0557] | 1308 | |
---|
[13cc89e1] | 1309 | (*sc->write_register)( rp, SONIC_REG_REA, LSW(sc->rea) ); |
---|
[dddc0557] | 1310 | |
---|
[13cc89e1] | 1311 | (*sc->write_register)( rp, SONIC_REG_RRP, LSW(sc->rsa) ); |
---|
| 1312 | (*sc->write_register)( rp, SONIC_REG_RWP, LSW(sc->rsa) ); /* XXX was rea */ |
---|
[dddc0557] | 1313 | |
---|
[13cc89e1] | 1314 | (*sc->write_register)( rp, SONIC_REG_URDA, MSW(sc->rda) ); |
---|
| 1315 | (*sc->write_register)( rp, SONIC_REG_CRDA, LSW(sc->rda) ); |
---|
[dddc0557] | 1316 | |
---|
[13cc89e1] | 1317 | (*sc->write_register)( rp, SONIC_REG_UTDA, MSW(sc->tdaTail) ); |
---|
| 1318 | (*sc->write_register)( rp, SONIC_REG_CTDA, LSW(sc->tdaTail) ); |
---|
[dddc0557] | 1319 | |
---|
| 1320 | /* |
---|
| 1321 | * Set End Of Buffer Count register to the value recommended |
---|
| 1322 | * in Note 1 of Section 3.4.4.4 of the SONIC data sheet. |
---|
| 1323 | */ |
---|
| 1324 | |
---|
[13cc89e1] | 1325 | (*sc->write_register)( rp, SONIC_REG_EOBC, RBUF_WC - 2 ); |
---|
[dddc0557] | 1326 | |
---|
| 1327 | /* |
---|
| 1328 | * Issue the load RRA command |
---|
| 1329 | */ |
---|
| 1330 | |
---|
[13cc89e1] | 1331 | (*sc->write_register)( rp, SONIC_REG_CR, CR_RRRA ); |
---|
| 1332 | while ((*sc->read_register)( rp, SONIC_REG_CR ) & CR_RRRA) |
---|
[dddc0557] | 1333 | continue; |
---|
| 1334 | |
---|
| 1335 | /* |
---|
| 1336 | * Remove device reset |
---|
| 1337 | */ |
---|
| 1338 | |
---|
[13cc89e1] | 1339 | (*sc->write_register)( rp, SONIC_REG_CR, 0 ); |
---|
[c932d85] | 1340 | |
---|
| 1341 | /* |
---|
[7344fba9] | 1342 | * Set up the SONIC CAM with our hardware address. |
---|
[c932d85] | 1343 | */ |
---|
[7344fba9] | 1344 | |
---|
[bfcf4cb3] | 1345 | hwaddr = sc->arpcom.ac_enaddr; |
---|
| 1346 | cdp = sc->cdp; |
---|
[301a2a3c] | 1347 | |
---|
| 1348 | #if (SONIC_DEBUG & SONIC_DEBUG_CAM) |
---|
| 1349 | printf( "hwaddr: %2x:%2x:%2x:%2x:%2x:%2x\n", |
---|
| 1350 | hwaddr[0], hwaddr[1], hwaddr[2], hwaddr[3], hwaddr[4], hwaddr[5] ); |
---|
| 1351 | #endif |
---|
[dddc0557] | 1352 | |
---|
[7344fba9] | 1353 | cdp->cep = 0; /* Fill first and only entry in CAM */ |
---|
| 1354 | cdp->cap0 = hwaddr[1] << 8 | hwaddr[0]; |
---|
| 1355 | cdp->cap1 = hwaddr[3] << 8 | hwaddr[2]; |
---|
| 1356 | cdp->cap2 = hwaddr[5] << 8 | hwaddr[4]; |
---|
| 1357 | cdp->ce = 0x0001; /* Enable first entry in CAM */ |
---|
| 1358 | |
---|
[13cc89e1] | 1359 | (*sc->write_register)( rp, SONIC_REG_CDC, 1 ); /* 1 entry in CDA */ |
---|
| 1360 | (*sc->write_register)( rp, SONIC_REG_CDP, LSW(cdp) ); |
---|
| 1361 | (*sc->write_register)( rp, SONIC_REG_CR, CR_LCAM ); /* Load the CAM */ |
---|
[7344fba9] | 1362 | |
---|
[13cc89e1] | 1363 | while ((*sc->read_register)( rp, SONIC_REG_CR ) & CR_LCAM) |
---|
[c932d85] | 1364 | continue; |
---|
| 1365 | |
---|
| 1366 | /* |
---|
| 1367 | * Verify that CAM was properly loaded. |
---|
| 1368 | */ |
---|
[e70a8f16] | 1369 | |
---|
[13cc89e1] | 1370 | (*sc->write_register)( rp, SONIC_REG_CR, CR_RST | CR_STP | CR_RXDIS | CR_HTX ); |
---|
[e70a8f16] | 1371 | |
---|
[301a2a3c] | 1372 | #if (SONIC_DEBUG & SONIC_DEBUG_CAM) |
---|
[13cc89e1] | 1373 | (*sc->write_register)( rp, SONIC_REG_CEP, 0 ); /* Select first entry in CAM */ |
---|
[301a2a3c] | 1374 | printf ("Loaded Ethernet address into SONIC CAM.\n" |
---|
| 1375 | " Wrote %04x%04x%04x - %#x\n" |
---|
[a3d3d9a] | 1376 | " Read %04x%04x%04x - %#x\n", |
---|
[7344fba9] | 1377 | cdp->cap2, cdp->cap1, cdp->cap0, cdp->ce, |
---|
[13cc89e1] | 1378 | (*sc->read_register)( rp, SONIC_REG_CAP2 ), |
---|
| 1379 | (*sc->read_register)( rp, SONIC_REG_CAP1 ), |
---|
| 1380 | (*sc->read_register)( rp, SONIC_REG_CAP0 ), |
---|
| 1381 | (*sc->read_register)( rp, SONIC_REG_CE )); |
---|
[301a2a3c] | 1382 | |
---|
[13cc89e1] | 1383 | (*sc->write_register)( rp, SONIC_REG_CEP, 0 ); /* Select first entry in CAM */ |
---|
| 1384 | if (((*sc->read_register)( rp, SONIC_REG_CAP2 ) != cdp->cap2) |
---|
| 1385 | || ((*sc->read_register)( rp, SONIC_REG_CAP1 ) != cdp->cap1) |
---|
| 1386 | || ((*sc->read_register)( rp, SONIC_REG_CAP0 ) != cdp->cap0) |
---|
| 1387 | || ((*sc->read_register)( rp, SONIC_REG_CE ) != cdp->ce)) { |
---|
[c932d85] | 1388 | printf ("Failed to load Ethernet address into SONIC CAM.\n" |
---|
| 1389 | " Wrote %04x%04x%04x - %#x\n" |
---|
[a3d3d9a] | 1390 | " Read %04x%04x%04x - %#x\n", |
---|
[7344fba9] | 1391 | cdp->cap2, cdp->cap1, cdp->cap0, cdp->ce, |
---|
[13cc89e1] | 1392 | (*sc->read_register)( rp, SONIC_REG_CAP2 ), |
---|
| 1393 | (*sc->read_register)( rp, SONIC_REG_CAP1 ), |
---|
| 1394 | (*sc->read_register)( rp, SONIC_REG_CAP0 ), |
---|
| 1395 | (*sc->read_register)( rp, SONIC_REG_CE )); |
---|
[c932d85] | 1396 | rtems_panic ("SONIC LCAM"); |
---|
[e70a8f16] | 1397 | } |
---|
[f1f42b4] | 1398 | #endif |
---|
[e70a8f16] | 1399 | |
---|
[13cc89e1] | 1400 | (*sc->write_register)(rp, SONIC_REG_CR, /* CR_TXP | */CR_RXEN | CR_STP); |
---|
[c932d85] | 1401 | |
---|
| 1402 | /* |
---|
| 1403 | * Attach SONIC interrupt handler |
---|
| 1404 | */ |
---|
[7dbab720] | 1405 | /* XXX |
---|
[13cc89e1] | 1406 | (*sc->write_register)( rp, SONIC_REG_IMR, 0 ); |
---|
[7dbab720] | 1407 | */ |
---|
[a818530b] | 1408 | |
---|
| 1409 | /* Ignore returned old handler */ |
---|
| 1410 | (void) set_vector(sonic_interrupt_handler, sc->vector, 1); |
---|
[c932d85] | 1411 | |
---|
| 1412 | /* |
---|
| 1413 | * Remainder of hardware initialization is |
---|
| 1414 | * done by the receive and transmit daemons. |
---|
| 1415 | */ |
---|
| 1416 | } |
---|
| 1417 | |
---|
[bfcf4cb3] | 1418 | /* |
---|
| 1419 | * Send packet (caller provides header). |
---|
| 1420 | */ |
---|
| 1421 | |
---|
| 1422 | SONIC_STATIC void sonic_start(struct ifnet *ifp) |
---|
| 1423 | { |
---|
| 1424 | struct sonic_softc *sc = ifp->if_softc; |
---|
| 1425 | |
---|
| 1426 | rtems_event_send(sc->txDaemonTid, START_TRANSMIT_EVENT); |
---|
| 1427 | ifp->if_flags |= IFF_OACTIVE; |
---|
| 1428 | } |
---|
| 1429 | |
---|
| 1430 | /* |
---|
| 1431 | * Initialize and start the device |
---|
| 1432 | */ |
---|
| 1433 | |
---|
| 1434 | SONIC_STATIC void sonic_init (void *arg) |
---|
| 1435 | { |
---|
| 1436 | struct sonic_softc *sc = arg; |
---|
| 1437 | struct ifnet *ifp = &sc->arpcom.ac_if; |
---|
| 1438 | void *rp = sc->sonic; |
---|
| 1439 | int rcr; |
---|
| 1440 | |
---|
| 1441 | if (sc->txDaemonTid == 0) { |
---|
| 1442 | |
---|
| 1443 | /* |
---|
| 1444 | * Set up SONIC hardware |
---|
| 1445 | */ |
---|
| 1446 | sonic_initialize_hardware (sc); |
---|
| 1447 | |
---|
| 1448 | /* |
---|
| 1449 | * Start driver tasks |
---|
| 1450 | */ |
---|
| 1451 | sc->rxDaemonTid = rtems_bsdnet_newproc ("SNrx", 4096, sonic_rxDaemon, sc); |
---|
[f1f42b4] | 1452 | sc->txDaemonTid = rtems_bsdnet_newproc ("SNtx", 4096, sonic_txDaemon, sc); |
---|
[bfcf4cb3] | 1453 | } |
---|
| 1454 | |
---|
| 1455 | /* |
---|
| 1456 | * Set flags appropriately |
---|
| 1457 | */ |
---|
[13cc89e1] | 1458 | rcr = (*sc->read_register)( rp, SONIC_REG_RCR ); |
---|
[bfcf4cb3] | 1459 | if (ifp->if_flags & IFF_PROMISC) |
---|
| 1460 | rcr |= RCR_PRO; |
---|
| 1461 | else |
---|
| 1462 | rcr &= ~RCR_PRO; |
---|
[13cc89e1] | 1463 | (*sc->write_register)( rp, SONIC_REG_RCR, rcr); |
---|
[bfcf4cb3] | 1464 | |
---|
| 1465 | /* |
---|
| 1466 | * Tell the world that we're running. |
---|
| 1467 | */ |
---|
| 1468 | ifp->if_flags |= IFF_RUNNING; |
---|
| 1469 | |
---|
| 1470 | /* |
---|
| 1471 | * Enable receiver and transmitter |
---|
| 1472 | */ |
---|
[f1f42b4] | 1473 | sonic_enable_interrupts( sc, IMR_TXEREN | (IMR_PRXEN | IMR_RBAEEN) ); |
---|
| 1474 | sonic_command( sc, CR_RXEN ); |
---|
[bfcf4cb3] | 1475 | } |
---|
| 1476 | |
---|
| 1477 | /* |
---|
| 1478 | * Driver ioctl handler |
---|
| 1479 | */ |
---|
| 1480 | static int |
---|
[a612b50] | 1481 | sonic_ioctl (struct ifnet *ifp, ioctl_command_t command, caddr_t data) |
---|
[bfcf4cb3] | 1482 | { |
---|
| 1483 | struct sonic_softc *sc = ifp->if_softc; |
---|
| 1484 | int error = 0; |
---|
| 1485 | |
---|
| 1486 | switch (command) { |
---|
[f3e13a1e] | 1487 | case SIOCGIFADDR: |
---|
| 1488 | case SIOCSIFADDR: |
---|
| 1489 | ether_ioctl (ifp, command, data); |
---|
[bfcf4cb3] | 1490 | break; |
---|
| 1491 | |
---|
[f3e13a1e] | 1492 | case SIOCSIFFLAGS: |
---|
| 1493 | switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) { |
---|
| 1494 | case IFF_RUNNING: |
---|
| 1495 | sonic_stop (sc); |
---|
| 1496 | break; |
---|
[bfcf4cb3] | 1497 | |
---|
[f3e13a1e] | 1498 | case IFF_UP: |
---|
| 1499 | sonic_init (sc); |
---|
| 1500 | break; |
---|
[bfcf4cb3] | 1501 | |
---|
[f3e13a1e] | 1502 | case IFF_UP | IFF_RUNNING: |
---|
| 1503 | sonic_stop (sc); |
---|
| 1504 | sonic_init (sc); |
---|
| 1505 | break; |
---|
| 1506 | |
---|
| 1507 | default: |
---|
| 1508 | break; |
---|
| 1509 | } |
---|
[bfcf4cb3] | 1510 | break; |
---|
| 1511 | |
---|
[f3e13a1e] | 1512 | case SIO_RTEMS_SHOW_STATS: |
---|
| 1513 | sonic_stats (sc); |
---|
| 1514 | break; |
---|
[a3d3d9a] | 1515 | |
---|
[f3e13a1e] | 1516 | /* |
---|
| 1517 | * FIXME: All sorts of multicast commands need to be added here! |
---|
| 1518 | */ |
---|
| 1519 | default: |
---|
| 1520 | error = EINVAL; |
---|
| 1521 | break; |
---|
[bfcf4cb3] | 1522 | } |
---|
| 1523 | return error; |
---|
| 1524 | } |
---|
| 1525 | |
---|
[c932d85] | 1526 | /* |
---|
| 1527 | * Attach an SONIC driver to the system |
---|
| 1528 | * This is the only `extern' function in the driver. |
---|
| 1529 | */ |
---|
[13cc89e1] | 1530 | |
---|
[c932d85] | 1531 | int |
---|
[c9c67390] | 1532 | rtems_sonic_driver_attach ( |
---|
[13cc89e1] | 1533 | struct rtems_bsdnet_ifconfig *config, |
---|
| 1534 | sonic_configuration_t *chip |
---|
| 1535 | ) |
---|
[c932d85] | 1536 | { |
---|
[bfcf4cb3] | 1537 | struct sonic_softc *sc; |
---|
| 1538 | struct ifnet *ifp; |
---|
| 1539 | int mtu; |
---|
[367cc5e] | 1540 | int unitNumber; |
---|
| 1541 | char *unitName; |
---|
[c932d85] | 1542 | |
---|
| 1543 | /* |
---|
[367cc5e] | 1544 | * Parse driver name |
---|
[c932d85] | 1545 | */ |
---|
[367cc5e] | 1546 | if ((unitNumber = rtems_bsdnet_parse_driver_name (config, &unitName)) < 0) |
---|
| 1547 | return 0; |
---|
| 1548 | |
---|
| 1549 | /* |
---|
| 1550 | * Is driver free? |
---|
| 1551 | */ |
---|
| 1552 | if ((unitNumber <= 0) || (unitNumber > NSONIC)) { |
---|
| 1553 | printf ("Bad SONIC unit number.\n"); |
---|
| 1554 | return 0; |
---|
| 1555 | } |
---|
| 1556 | sc = &sonic_softc[unitNumber - 1]; |
---|
| 1557 | ifp = &sc->arpcom.ac_if; |
---|
| 1558 | if (ifp->if_softc != NULL) { |
---|
| 1559 | printf ("Driver already in use.\n"); |
---|
| 1560 | return 0; |
---|
[c932d85] | 1561 | } |
---|
| 1562 | |
---|
[c153a7b] | 1563 | /* |
---|
| 1564 | * zero out the control structure |
---|
| 1565 | */ |
---|
| 1566 | |
---|
[bfcf4cb3] | 1567 | memset( sc, 0, sizeof(*sc) ); |
---|
[c932d85] | 1568 | |
---|
| 1569 | |
---|
| 1570 | /* |
---|
[bfcf4cb3] | 1571 | * Process options |
---|
[c932d85] | 1572 | */ |
---|
[bfcf4cb3] | 1573 | if (config->hardware_address) { |
---|
| 1574 | memcpy (sc->arpcom.ac_enaddr, config->hardware_address, ETHER_ADDR_LEN); |
---|
[c932d85] | 1575 | } |
---|
[bfcf4cb3] | 1576 | else { |
---|
| 1577 | memset (sc->arpcom.ac_enaddr, 0x08, ETHER_ADDR_LEN); |
---|
| 1578 | } |
---|
| 1579 | if (config->mtu) |
---|
| 1580 | mtu = config->mtu; |
---|
| 1581 | else |
---|
| 1582 | mtu = ETHERMTU; |
---|
| 1583 | if (config->rbuf_count) |
---|
| 1584 | sc->rdaCount = config->rbuf_count; |
---|
| 1585 | else |
---|
[13cc89e1] | 1586 | sc->rdaCount = chip->rda_count; |
---|
[bfcf4cb3] | 1587 | if (config->xbuf_count) |
---|
| 1588 | sc->tdaCount = config->xbuf_count; |
---|
| 1589 | else |
---|
[13cc89e1] | 1590 | sc->tdaCount = chip->tda_count; |
---|
[bfcf4cb3] | 1591 | sc->acceptBroadcast = !config->ignore_broadcast; |
---|
[c932d85] | 1592 | |
---|
[1f25c77] | 1593 | sc->sonic = chip->base_address; |
---|
[13cc89e1] | 1594 | sc->vector = chip->vector; |
---|
| 1595 | sc->dcr_value = chip->dcr_value; |
---|
| 1596 | sc->dc2_value = chip->dc2_value; |
---|
| 1597 | sc->write_register = chip->write_register; |
---|
| 1598 | sc->read_register = chip->read_register; |
---|
[7dbab720] | 1599 | |
---|
[c932d85] | 1600 | /* |
---|
[bfcf4cb3] | 1601 | * Set up network interface values |
---|
[c932d85] | 1602 | */ |
---|
[bfcf4cb3] | 1603 | ifp->if_softc = sc; |
---|
[367cc5e] | 1604 | ifp->if_unit = unitNumber; |
---|
| 1605 | ifp->if_name = unitName; |
---|
[bfcf4cb3] | 1606 | ifp->if_mtu = mtu; |
---|
| 1607 | ifp->if_init = sonic_init; |
---|
| 1608 | ifp->if_ioctl = sonic_ioctl; |
---|
| 1609 | ifp->if_start = sonic_start; |
---|
| 1610 | ifp->if_output = ether_output; |
---|
| 1611 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX; |
---|
| 1612 | if (ifp->if_snd.ifq_maxlen == 0) |
---|
| 1613 | ifp->if_snd.ifq_maxlen = ifqmaxlen; |
---|
[c932d85] | 1614 | |
---|
| 1615 | /* |
---|
[bfcf4cb3] | 1616 | * Attach the interface |
---|
[c932d85] | 1617 | */ |
---|
[bfcf4cb3] | 1618 | if_attach (ifp); |
---|
| 1619 | ether_ifattach (ifp); |
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| 1620 | return 1; |
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[c932d85] | 1621 | } |
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[7fc5d54e] | 1622 | |
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[e995f3a1] | 1623 | #if (SONIC_DEBUG & SONIC_DEBUG_PRINT_REGISTERS) |
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[7fc5d54e] | 1624 | #include <stdio.h> |
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| 1625 | |
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[dddc0557] | 1626 | char SONIC_Reg_name[64][6]= { |
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| 1627 | "CR", /* 0x00 */ |
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| 1628 | "DCR", /* 0x01 */ |
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| 1629 | "RCR", /* 0x02 */ |
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| 1630 | "TCR", /* 0x03 */ |
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| 1631 | "IMR", /* 0x04 */ |
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| 1632 | "ISR", /* 0x05 */ |
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| 1633 | "UTDA", /* 0x06 */ |
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| 1634 | "CTDA", /* 0x07 */ |
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| 1635 | "0x08", /* 0x08 */ |
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| 1636 | "0x09", /* 0x09 */ |
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| 1637 | "0x0A", /* 0x0A */ |
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| 1638 | "0x0B", /* 0x0B */ |
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| 1639 | "0x0C", /* 0x0C */ |
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| 1640 | "URDA", /* 0x0D */ |
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| 1641 | "CRDA", /* 0x0E */ |
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| 1642 | "0x0F", /* 0x0F */ |
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| 1643 | "0x10", /* 0x10 */ |
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| 1644 | "0x11", /* 0x11 */ |
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| 1645 | "0x12", /* 0x12 */ |
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| 1646 | "EOBC", /* 0x13 */ |
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| 1647 | "URRA", /* 0x14 */ |
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| 1648 | "RSA", /* 0x15 */ |
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| 1649 | "REA", /* 0x16 */ |
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| 1650 | "RRP", /* 0x17 */ |
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| 1651 | "RWP", /* 0x18 */ |
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| 1652 | "0x19", /* 0x19 */ |
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| 1653 | "0x1A", /* 0x1A */ |
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| 1654 | "0x1B", /* 0x1B */ |
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| 1655 | "0x1C", /* 0x1C */ |
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| 1656 | "0x0D", /* 0x1D */ |
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| 1657 | "0x1E", /* 0x1E */ |
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| 1658 | "0x1F", /* 0x1F */ |
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| 1659 | "0x20", /* 0x20 */ |
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| 1660 | "CEP", /* 0x21 */ |
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| 1661 | "CAP2", /* 0x22 */ |
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| 1662 | "CAP1", /* 0x23 */ |
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| 1663 | "CAP0", /* 0x24 */ |
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| 1664 | "CE", /* 0x25 */ |
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| 1665 | "CDP", /* 0x26 */ |
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| 1666 | "CDC", /* 0x27 */ |
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| 1667 | "SR", /* 0x28 */ |
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| 1668 | "WT0", /* 0x29 */ |
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| 1669 | "WT1", /* 0x2A */ |
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| 1670 | "RSC", /* 0x2B */ |
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| 1671 | "CRCT", /* 0x2C */ |
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| 1672 | "FAET", /* 0x2D */ |
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| 1673 | "MPT", /* 0x2E */ |
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| 1674 | "MDT", /* 0x2F */ |
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| 1675 | "0x30", /* 0x30 */ |
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| 1676 | "0x31", /* 0x31 */ |
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| 1677 | "0x32", /* 0x32 */ |
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| 1678 | "0x33", /* 0x33 */ |
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| 1679 | "0x34", /* 0x34 */ |
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| 1680 | "0x35", /* 0x35 */ |
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| 1681 | "0x36", /* 0x36 */ |
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| 1682 | "0x37", /* 0x37 */ |
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| 1683 | "0x38", /* 0x38 */ |
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| 1684 | "0x39", /* 0x39 */ |
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| 1685 | "0x3A", /* 0x3A */ |
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| 1686 | "0x3B", /* 0x3B */ |
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| 1687 | "0x3C", /* 0x3C */ |
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| 1688 | "0x3D", /* 0x3D */ |
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| 1689 | "0x3E", /* 0x3E */ |
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| 1690 | "DCR2" /* 0x3F */ |
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| 1691 | }; |
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| 1692 | #endif |
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