bcm956160r_opt6.asm (5401B)
1 ; 2 ; 3 ; 4 ; This license is set out in https://raw.githubusercontent.com/Broadcom-Network-Switching-Software/OpenBCM/master/Legal/LICENSE file. 5 ; 6 ; Copyright 2007-2019 Broadcom Inc. All rights reserved. 7 ; 8 ; This example is used for BCM956160R. 9 ; 10 ; To start it, use the following commands from BCM: 11 ; 12 ; led load bcm956160r_opt6.hex 13 ; led auto on 14 ; led start 15 ; 16 ; For TSCE (10G+) ports, each port needs to output 2 bits for 2 LEDs 17 ; LED_0: bit 0 18 ; LED_1: bit 1 19 ; 20 ; For QTC (2.5G) ports, each port needs to output 2 bits for 1 LED 21 ; LED_0: bit 0-1 22 ; 23 ; For EGPHY (1G) ports, each port needs to output 2 bits for 2 LEDs 24 ; LED_0: bit 0 25 ; LED_1: bit 1 26 ; 27 ; Totally 26 ports will be outputed, i.e. 52 (= 26 * 2) bits. 28 ; The output sequence is TSCE->QTC->EGPHY, and high port is first. 29 ; 30 ; In physical port view, the output order is: 31 ; 36->34(TSCE), 21->18(QTC), 5->2(QTC), 33->26(EGPHY), 10->17(EGPHY) 32 ; 33 ; Link up/down info cannot be derived from LINKEN, as the LED 34 ; processor does not always have access to link status. This program 35 ; assumes link status is kept current in bit 0 of RAM byte (0xA0 + portnum). 36 ; Generally, a program running on the main CPU must update these 37 ; locations on link change; see linkscan callback in 38 ; $SDK/src/appl/diag/ledproc.c. 39 ; 40 41 ; 42 ; Constants 43 ; 44 TICKS EQU 1 45 SECOND_TICKS EQU (30*TICKS) 46 ACT_EXT_TICKS EQU (SECOND_TICKS/3) 47 TXRX_ALT_TICKS EQU (SECOND_TICKS/6) 48 49 NUM_PORTS equ 27 50 START_PORT_0 equ 36 51 END_PORT_0 equ 34 52 START_PORT_1 equ 21 53 END_PORT_1 equ 18 54 START_PORT_2 equ 5 55 END_PORT_2 equ 2 56 START_PORT_3 equ 33 57 END_PORT_3 equ 26 58 START_PORT_4 equ 10 59 END_PORT_4 equ 17 60 61 ; 62 ; LED process 63 ; 64 65 start_sec0: 66 ld a, START_PORT_0 67 iter_sec0: 68 port a 69 ld (PORT_NUM), a 70 71 call get_activity 72 call get_link_sw 73 74 ld a, (PORT_NUM) 75 dec a 76 cmp a, END_PORT_0 - 1 77 jnz iter_sec0 78 79 start_sec1: 80 ld a, START_PORT_1 81 iter_sec1: 82 port a 83 ld (PORT_NUM), a 84 85 call get_port_status 86 87 ld a, (PORT_NUM) 88 dec a 89 cmp a, END_PORT_1 - 1 90 jnz iter_sec1 91 92 start_sec2: 93 ld a, START_PORT_2 94 iter_sec2: 95 port a 96 ld (PORT_NUM), a 97 98 call get_port_status 99 100 ld a, (PORT_NUM) 101 dec a 102 cmp a, END_PORT_2 - 1 103 jnz iter_sec2 104 105 start_sec3: 106 ld a, START_PORT_3 107 iter_sec3: 108 port a 109 ld (PORT_NUM), a 110 111 call get_activity 112 call get_link_sw 113 114 ld a, (PORT_NUM) 115 dec a 116 cmp a, END_PORT_3 - 1 117 jnz iter_sec3 118 119 start_sec4: 120 ld a, START_PORT_4 121 iter_sec4: 122 port a 123 ld (PORT_NUM), a 124 125 call get_activity 126 call get_link_sw 127 128 ld a, (PORT_NUM) 129 inc a 130 cmp a, END_PORT_4 + 1 131 jnz iter_sec4 132 133 end: 134 inc (TXRX_ALT_COUNT) 135 send 2*NUM_PORTS 136 137 ; 138 ; get_link_sw 139 ; 140 ; This routine finds the link status LED for a port. 141 ; Link info is in bit 0 of the byte read from PORTDATA[port] 142 ; Inputs: (PORT_NUM) 143 ; Outputs: LED stream for on or off. 144 ; Destroys: a, b 145 get_link_sw: 146 ld b, PORTDATA 147 add b, (PORT_NUM) 148 ld a, (b) 149 tst a, 0 150 151 jc led_on 152 jmp led_off 153 154 ; 155 ; get_link_hw 156 ; 157 ; This routine finds the link status LED for a port from HW. 158 ; Inputs: a 159 ; Outputs: LED stream for on or off. 160 ; Destroys: b 161 get_link_hw: 162 port a 163 pushst LINKEN 164 pop 165 166 jc led_on 167 jmp led_off 168 169 ; 170 ; get_activity 171 ; 172 ; This routine finds the activity for a port from HW. 173 ; Inputs: a 174 ; Outputs: LED stream for on or off. 175 ; Destroys: b 176 get_activity: 177 port a 178 pushst RX 179 pushst TX 180 tor 181 pop 182 183 jnc led_off ; Always black, No Activity 184 185 ld b, (TXRX_ALT_COUNT) 186 and b, TXRX_ALT_TICKS 187 jnz led_on 188 jmp led_off 189 190 ; 191 ; get_port_status 192 ; 193 ; This routine finds the link and activity status for a port from HW. 194 ; Inputs: a 195 ; Outputs: LED stream for on or off. 196 ; Destroys: b 197 get_port_status: 198 port a 199 200 pushst LINKEN 201 pop 202 jnc led_black ; Always black, No LINK 203 204 pushst RX 205 pushst TX 206 tor 207 pop 208 209 jc led_blink ; Show activity 210 jmp led_green ; Show Link 211 led_blink: 212 ld b, (TXRX_ALT_COUNT) 213 and b, TXRX_ALT_TICKS 214 jnz led_green 215 jmp led_black 216 217 ; 218 ; led_on: 219 ; 220 ; For 10G+ and 1G port LED, outputs one bit 221 ; Outputs: Bits to the LED stream indicating ON 222 ; 223 led_on: 224 push 0 225 pack 226 ret 227 228 ; 229 ; led_off 230 ; For 10G+ and 1G port LED, outputs one bit 231 ; Outputs: Bits to the LED stream indicating OFF 232 ; 233 led_off: 234 push 1 235 pack 236 ret 237 238 ; 239 ; led_black 240 ; For 2.5G port LED, outputs two bit 241 ; Outputs: Bits to the LED stream indicating BLACK(OFF) 242 ; 243 led_black: 244 push 1 245 pack 246 push 1 247 pack 248 ret 249 250 ; 251 ; led_green 252 ; For 2.5G port LED, outputs two bit 253 ; Outputs: Bits to the LED stream indicating GREEN 254 ; 255 led_green: 256 push 0 257 pack 258 push 0 259 pack 260 ret 261 262 ; Variables (SDK software initializes LED memory from 0xA0-0xff to 0) 263 PORTDATA equ 0xA0 264 TXRX_ALT_COUNT equ 0xE0 265 PORT_NUM equ 0xE1 266 267 ; Symbolic names for the bits of the port status fields 268 RX equ 0x0 ; received packet 269 TX equ 0x1 ; transmitted packet 270 COLL equ 0x2 ; collision indicator 271 SPEED_C equ 0x3 ; 100 Mbps 272 SPEED_M equ 0x4 ; 1000 Mbps 273 DUPLEX equ 0x5 ; half/full duplex 274 FLOW equ 0x6 ; flow control capable 275 LINKUP equ 0x7 ; link down/up status 276 LINKEN equ 0x8 ; link disabled/enabled status 277 ZERO equ 0xE ; always 0 278 ONE equ 0xF ; always 1