diff options
Diffstat (limited to 'common/i2c_trace.c')
| -rw-r--r-- | common/i2c_trace.c | 200 |
1 files changed, 0 insertions, 200 deletions
diff --git a/common/i2c_trace.c b/common/i2c_trace.c deleted file mode 100644 index 0408751f53..0000000000 --- a/common/i2c_trace.c +++ /dev/null @@ -1,200 +0,0 @@ -/* Copyright 2019 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include "common.h" -#include "console.h" -#include "i2c.h" -#include "util.h" - -#define CPUTS(outstr) cputs(CC_I2C, outstr) -#define CPRINTS(format, args...) cprints(CC_I2C, format, ## args) -#define CPRINTF(format, args...) cprintf(CC_I2C, format, ## args) - -struct i2c_trace_range { - bool enabled; - int port; - int periph_addr_lo; /* Inclusive */ - int periph_addr_hi; /* Inclusive */ -}; - -static struct i2c_trace_range trace_entries[8]; - -void i2c_trace_notify(int port, uint16_t periph_addr_flags, - int direction, const uint8_t *data, size_t size) -{ - size_t i; - uint16_t addr = I2C_GET_ADDR(periph_addr_flags); - - for (i = 0; i < ARRAY_SIZE(trace_entries); i++) - if (trace_entries[i].enabled - && trace_entries[i].port == port - && trace_entries[i].periph_addr_lo <= addr - && trace_entries[i].periph_addr_hi >= addr) - goto trace_enabled; - return; - -trace_enabled: - CPRINTF("i2c: %s %d:0x%X ", - direction ? "read" : "write", - port, - addr); - for (i = 0; i < size; i++) - CPRINTF("%02X ", data[i]); - CPRINTF("\n"); -} - -static int command_i2ctrace_list(void) -{ - size_t i; - - ccprintf("id port address\n"); - ccprintf("-- ---- -------\n"); - - for (i = 0; i < ARRAY_SIZE(trace_entries); i++) { - if (trace_entries[i].enabled) { - ccprintf("%2d %4d 0x%X", - i, - trace_entries[i].port, - trace_entries[i].periph_addr_lo); - if (trace_entries[i].periph_addr_hi - != trace_entries[i].periph_addr_lo) - ccprintf(" to 0x%X", - trace_entries[i].periph_addr_hi); - ccprintf("\n"); - } - } - - return EC_SUCCESS; -} - -static int command_i2ctrace_disable(size_t id) -{ - if (id >= ARRAY_SIZE(trace_entries)) - return EC_ERROR_PARAM2; - - trace_entries[id].enabled = 0; - return EC_SUCCESS; -} - -static int command_i2ctrace_enable(int port, int periph_addr_lo, - int periph_addr_hi) -{ - struct i2c_trace_range *t; - struct i2c_trace_range *new_entry = NULL; - - if (port >= i2c_ports_used) - return EC_ERROR_PARAM2; - - if (periph_addr_lo > periph_addr_hi) - return EC_ERROR_PARAM3; - - /* - * Scan thru existing entries to see if there is one we can - * extend instead of making a new entry - */ - for (t = trace_entries; - t < trace_entries + ARRAY_SIZE(trace_entries); - t++) { - if (t->enabled && t->port == port) { - /* Subset of existing range, do nothing */ - if (t->periph_addr_lo <= periph_addr_lo && - t->periph_addr_hi >= periph_addr_hi) - return EC_SUCCESS; - - /* Extends existing range on both directions, replace */ - if (t->periph_addr_lo >= periph_addr_lo && - t->periph_addr_hi <= periph_addr_hi) { - t->enabled = 0; - return command_i2ctrace_enable( - port, periph_addr_lo, periph_addr_hi); - } - - /* Extends existing range below */ - if (t->periph_addr_lo - 1 <= periph_addr_hi && - t->periph_addr_hi >= periph_addr_hi) { - t->enabled = 0; - return command_i2ctrace_enable( - port, - periph_addr_lo, - t->periph_addr_hi); - } - - /* Extends existing range above */ - if (t->periph_addr_lo <= periph_addr_lo && - t->periph_addr_hi + 1 >= periph_addr_lo) { - t->enabled = 0; - return command_i2ctrace_enable( - port, - t->periph_addr_lo, - periph_addr_hi); - } - } else if (!t->enabled && !new_entry) { - new_entry = t; - } - } - - /* We need to allocate a new entry */ - if (new_entry) { - new_entry->enabled = 1; - new_entry->port = port; - new_entry->periph_addr_lo = periph_addr_lo; - new_entry->periph_addr_hi = periph_addr_hi; - return EC_SUCCESS; - } - - ccprintf("No space to allocate new trace entry. Delete some first.\n"); - return EC_ERROR_MEMORY_ALLOCATION; -} - - -static int command_i2ctrace(int argc, char **argv) -{ - int id_or_port; - int address_low; - int address_high; - char *end; - - if (argc < 2) - return EC_ERROR_PARAM_COUNT; - - if (!strcasecmp(argv[1], "list") && argc == 2) - return command_i2ctrace_list(); - - if (argc < 3) - return EC_ERROR_PARAM_COUNT; - - id_or_port = strtoi(argv[2], &end, 0); - if (*end || id_or_port < 0) - return EC_ERROR_PARAM2; - - if (!strcasecmp(argv[1], "disable") && argc == 3) - return command_i2ctrace_disable(id_or_port); - - if (!strcasecmp(argv[1], "enable")) { - address_low = strtoi(argv[3], &end, 0); - if (*end || address_low < 0) - return EC_ERROR_PARAM3; - - if (argc == 4) { - address_high = address_low; - } else if (argc == 5) { - address_high = strtoi(argv[4], &end, 0); - if (*end || address_high < 0) - return EC_ERROR_PARAM4; - } else { - return EC_ERROR_PARAM_COUNT; - } - - return command_i2ctrace_enable( - id_or_port, address_low, address_high); - } - - return EC_ERROR_PARAM1; -} -DECLARE_CONSOLE_COMMAND(i2ctrace, - command_i2ctrace, - "[list | disable <id> | enable <port> <address> | " - "enable <port> <address-low> <address-high>]", - "Trace I2C transactions"); |