While at it, add some trace messages to help debug problems
seen when running the latest Linux kernel.
Signed-off-by: Guenter Roeck <address@hidden>
---
v2: Print pointer to Flash data structure as flash ID with each trace
message to support systems with more than one instantiated flash.
hw/block/m25p80.c | 48 ++++++++++++++++++++-----------------------
hw/block/trace-events | 16 +++++++++++++++
2 files changed, 38 insertions(+), 26 deletions(-)
diff --git a/hw/block/m25p80.c b/hw/block/m25p80.c
index 61f2fb8f8f..5ff8d270c4 100644
--- a/hw/block/m25p80.c
+++ b/hw/block/m25p80.c
@@ -32,17 +32,7 @@
#include "qemu/module.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
-
-#ifndef M25P80_ERR_DEBUG
-#define M25P80_ERR_DEBUG 0
-#endif
-
-#define DB_PRINT_L(level, ...) do { \
- if (M25P80_ERR_DEBUG > (level)) { \
- fprintf(stderr, ": %s: ", __func__); \
- fprintf(stderr, ## __VA_ARGS__); \
- } \
-} while (0)
+#include "trace.h"
/* Fields for FlashPartInfo->flags */
@@ -574,7 +564,8 @@ static void flash_erase(Flash *s, int offset, FlashCMD cmd)
abort();
}
- DB_PRINT_L(0, "offset = %#x, len = %d\n", offset, len);
+ trace_m25p80_flash_erase(s, offset, len);
+
if ((s->pi->flags & capa_to_assert) != capa_to_assert) {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: %d erase size not supported
by"
" device\n", len);
@@ -607,8 +598,7 @@ void flash_write8(Flash *s, uint32_t addr, uint8_t data)
}
if ((prev ^ data) & data) {
- DB_PRINT_L(1, "programming zero to one! addr=%" PRIx32 " %" PRIx8
- " -> %" PRIx8 "\n", addr, prev, data);
+ trace_m25p80_programming_zero_to_one(s, addr, prev, data);
}
if (s->pi->flags & EEPROM) {
@@ -662,6 +652,9 @@ static void complete_collecting_data(Flash *s)
s->state = STATE_IDLE;
+ trace_m25p80_complete_collecting(s, s->cmd_in_progress, n, s->ear,
+ s->cur_addr);
+
switch (s->cmd_in_progress) {
case DPP:
case QPP:
@@ -825,7 +818,7 @@ static void reset_memory(Flash *s)
break;
}
- DB_PRINT_L(0, "Reset done.\n");
+ trace_m25p80_reset_done(s);
}
static void decode_fast_read_cmd(Flash *s)
@@ -941,9 +934,10 @@ static void decode_qio_read_cmd(Flash *s)
static void decode_new_cmd(Flash *s, uint32_t value)
{
- s->cmd_in_progress = value;
int i;
- DB_PRINT_L(0, "decoded new command:%x\n", value);
+
+ s->cmd_in_progress = value;
+ trace_m25p80_command_decoded(s, value);
if (value != RESET_MEMORY) {
s->reset_enable = false;
@@ -1042,7 +1036,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
break;
case JEDEC_READ:
- DB_PRINT_L(0, "populated jedec code\n");
+ trace_m25p80_populated_jedec(s);
for (i = 0; i < s->pi->id_len; i++) {
s->data[i] = s->pi->id[i];
}
@@ -1063,7 +1057,7 @@ static void decode_new_cmd(Flash *s, uint32_t value)
case BULK_ERASE_60:
case BULK_ERASE:
if (s->write_enable) {
- DB_PRINT_L(0, "chip erase\n");
+ trace_m25p80_chip_erase(s);
flash_erase(s, 0, BULK_ERASE);
} else {
qemu_log_mask(LOG_GUEST_ERROR, "M25P80: chip erase with write "
@@ -1184,7 +1178,7 @@ static int m25p80_cs(SSISlave *ss, bool select)
s->data_read_loop = false;
}
- DB_PRINT_L(0, "%sselect\n", select ? "de" : "");
+ trace_m25p80_select(s, select ? "de" : "");
return 0;
}
@@ -1194,19 +1188,20 @@ static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t
tx)
Flash *s = M25P80(ss);
uint32_t r = 0;
+ trace_m25p80_transfer(s, s->state, s->len, s->needed_bytes, s->pos,
+ s->cur_addr, (uint8_t)tx);
+
switch (s->state) {
case STATE_PAGE_PROGRAM:
- DB_PRINT_L(1, "page program cur_addr=%#" PRIx32 " data=%" PRIx8 "\n",
- s->cur_addr, (uint8_t)tx);
+ trace_m25p80_page_program(s, s->cur_addr, (uint8_t)tx);
flash_write8(s, s->cur_addr, (uint8_t)tx);
s->cur_addr = (s->cur_addr + 1) & (s->size - 1);
break;
case STATE_READ:
r = s->storage[s->cur_addr];
- DB_PRINT_L(1, "READ 0x%" PRIx32 "=%" PRIx8 "\n", s->cur_addr,
- (uint8_t)r);
+ trace_m25p80_read_byte(s, s->cur_addr, (uint8_t)r);
s->cur_addr = (s->cur_addr + 1) & (s->size - 1);
break;
@@ -1244,6 +1239,7 @@ static uint32_t m25p80_transfer8(SSISlave *ss, uint32_t tx)
}
r = s->data[s->pos];
+ trace_m25p80_read_data(s, s->pos, (uint8_t)r);
s->pos++;
if (s->pos == s->len) {
s->pos = 0;
@@ -1281,7 +1277,7 @@ static void m25p80_realize(SSISlave *ss, Error **errp)
return;
}
- DB_PRINT_L(0, "Binding to IF_MTD drive\n");
+ trace_m25p80_binding(s);
s->storage = blk_blockalign(s->blk, s->size);
if (blk_pread(s->blk, 0, s->storage, s->size) != s->size) {
@@ -1289,7 +1285,7 @@ static void m25p80_realize(SSISlave *ss, Error **errp)
return;
}
} else {
- DB_PRINT_L(0, "No BDRV - binding to RAM\n");
+ trace_m25p80_binding_no_bdrv(s);
s->storage = blk_blockalign(NULL, s->size);
memset(s->storage, 0xFF, s->size);
}
diff --git a/hw/block/trace-events b/hw/block/trace-events
index c03e80c2c9..f78939fa9d 100644
--- a/hw/block/trace-events
+++ b/hw/block/trace-events
@@ -134,3 +134,19 @@ xen_block_blockdev_add(char *str) "%s"
xen_block_blockdev_del(const char *node_name) "%s"
xen_block_device_create(unsigned int number) "%u"
xen_block_device_destroy(unsigned int number) "%u"
+
+# m25p80.c
+m25p80_flash_erase(void *s, int offset, uint32_t len) "[%p] offset = 0x%"PRIx32",
len = %u"
+m25p80_programming_zero_to_one(void *s, uint32_t addr, uint8_t prev, uint8_t data) "[%p] programming zero
to one! addr=0x%"PRIx32" 0x%"PRIx8" -> 0x%"PRIx8
+m25p80_reset_done(void *s) "[%p] Reset done."
+m25p80_command_decoded(void *s, uint32_t cmd) "[%p] new command:0x%"PRIx32
+m25p80_complete_collecting(void *s, uint32_t cmd, int n, uint8_t ear, uint32_t cur_addr) "[%p] decode
cmd: 0x%"PRIx32" len %d ear 0x%"PRIx8" addr 0x%"PRIx32
+m25p80_populated_jedec(void *s) "[%p] populated jedec code"
+m25p80_chip_erase(void *s) "[%p] chip erase"
+m25p80_select(void *s, const char *what) "[%p] %sselect"
+m25p80_page_program(void *s, uint32_t addr, uint8_t tx) "[%p] page program
cur_addr=0x%"PRIx32" data=0x%"PRIx8
+m25p80_transfer(void *s, uint8_t state, uint32_t len, uint8_t needed, uint32_t pos, uint32_t cur_addr, uint8_t t) "[%p] Transfer
state 0x%"PRIx8" len 0x%"PRIx32" needed 0x%"PRIx8" pos 0x%"PRIx32" addr 0x%"PRIx32" tx
0x%"PRIx8
+m25p80_read_byte(void *s, uint32_t addr, uint8_t v) "[%p] Read byte
0x%"PRIx32"=0x%"PRIx8
+m25p80_read_data(void *s, uint32_t pos, uint8_t v) "[%p] Read data
0x%"PRIx32"=0x%"PRIx8
+m25p80_binding(void *s) "[%p] Binding to IF_MTD drive"
+m25p80_binding_no_bdrv(void *s) "[%p] No BDRV - binding to RAM"