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From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PULL 13/20] dma/pl330: Convert to support tracing
Date: Thu, 23 Jan 2020 15:30:34 +0000
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From: Guenter Roeck <linux@roeck-us.net>
Replace debug logging code with tracing.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Message-id: 20200123052540.6132-2-linux@roeck-us.net
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/dma/pl330.c | 88 ++++++++++++++++++++++++---------------------
hw/dma/trace-events | 24 +++++++++++++
2 files changed, 72 insertions(+), 40 deletions(-)
diff --git a/hw/dma/pl330.c b/hw/dma/pl330.c
index f2bb2d9ac16..64519971ef9 100644
--- a/hw/dma/pl330.c
+++ b/hw/dma/pl330.c
@@ -25,19 +25,12 @@
#include "sysemu/dma.h"
#include "qemu/log.h"
#include "qemu/module.h"
+#include "trace.h"
=20
#ifndef PL330_ERR_DEBUG
#define PL330_ERR_DEBUG 0
#endif
=20
-#define DB_PRINT_L(lvl, fmt, args...) do {\
- if (PL330_ERR_DEBUG >=3D lvl) {\
- fprintf(stderr, "PL330: %s:" fmt, __func__, ## args);\
- } \
-} while (0)
-
-#define DB_PRINT(fmt, args...) DB_PRINT_L(1, fmt, ## args)
-
#define PL330_PERIPH_NUM 32
#define PL330_MAX_BURST_LEN 128
#define PL330_INSN_MAXSIZE 6
@@ -319,6 +312,26 @@ typedef struct PL330InsnDesc {
void (*exec)(PL330Chan *, uint8_t opcode, uint8_t *args, int len);
} PL330InsnDesc;
=20
+static void pl330_hexdump(uint8_t *buf, size_t size)
+{
+ unsigned int b, i, len;
+ char tmpbuf[80];
+
+ for (b =3D 0; b < size; b +=3D 16) {
+ len =3D size - b;
+ if (len > 16) {
+ len =3D 16;
+ }
+ tmpbuf[0] =3D '\0';
+ for (i =3D 0; i < len; i++) {
+ if ((i % 4) =3D=3D 0) {
+ strcat(tmpbuf, " ");
+ }
+ sprintf(tmpbuf + strlen(tmpbuf), " %02x", buf[b + i]);
+ }
+ trace_pl330_hexdump(b, tmpbuf);
+ }
+}
=20
/* MFIFO Implementation
*
@@ -582,7 +595,7 @@ static inline void pl330_queue_remove_tagged(PL330Queue=
*s, uint8_t tag)
=20
static inline void pl330_fault(PL330Chan *ch, uint32_t flags)
{
- DB_PRINT("ch: %p, flags: %" PRIx32 "\n", ch, flags);
+ trace_pl330_fault(ch, flags);
ch->fault_type |=3D flags;
if (ch->state =3D=3D pl330_chan_fault) {
return;
@@ -590,7 +603,7 @@ static inline void pl330_fault(PL330Chan *ch, uint32_t =
flags)
ch->state =3D pl330_chan_fault;
ch->parent->num_faulting++;
if (ch->parent->num_faulting =3D=3D 1) {
- DB_PRINT("abort interrupt raised\n");
+ trace_pl330_fault_abort();
qemu_irq_raise(ch->parent->irq_abort);
}
}
@@ -648,7 +661,7 @@ static void pl330_dmaend(PL330Chan *ch, uint8_t opcode,
return;
}
}
- DB_PRINT("DMA ending!\n");
+ trace_pl330_dmaend();
pl330_fifo_tagged_remove(&s->fifo, ch->tag);
pl330_queue_remove_tagged(&s->read_queue, ch->tag);
pl330_queue_remove_tagged(&s->write_queue, ch->tag);
@@ -683,7 +696,7 @@ static void pl330_dmago(PL330Chan *ch, uint8_t opcode, =
uint8_t *args, int len)
uint32_t pc;
PL330Chan *s;
=20
- DB_PRINT("\n");
+ trace_pl330_dmago();
=20
if (!ch->is_manager) {
pl330_fault(ch, PL330_FAULT_UNDEF_INSTR);
@@ -740,9 +753,7 @@ static void pl330_dmald(PL330Chan *ch, uint8_t opcode, =
uint8_t *args, int len)
ch->stall =3D pl330_queue_put_insn(&ch->parent->read_queue, ch->src,
size, num, inc, 0, ch->tag);
if (!ch->stall) {
- DB_PRINT("channel:%" PRId8 " address:%08" PRIx32 " size:%" PRIx32
- " num:%" PRId32 " %c\n",
- ch->tag, ch->src, size, num, inc ? 'Y' : 'N');
+ trace_pl330_dmald(ch->tag, ch->src, size, num, inc ? 'Y' : 'N');
ch->src +=3D inc ? size * num - (ch->src & (size - 1)) : 0;
}
}
@@ -782,7 +793,7 @@ static void pl330_dmakill(PL330Chan *ch, uint8_t opcode=
, uint8_t *args, int len)
ch->fault_type =3D 0;
ch->parent->num_faulting--;
if (ch->parent->num_faulting =3D=3D 0) {
- DB_PRINT("abort interrupt lowered\n");
+ trace_pl330_dmakill();
qemu_irq_lower(ch->parent->irq_abort);
}
}
@@ -800,6 +811,8 @@ static void pl330_dmalpend(PL330Chan *ch, uint8_t opcod=
e,
uint8_t bs =3D opcode & 3;
uint8_t lc =3D (opcode & 4) >> 2;
=20
+ trace_pl330_dmalpend(nf, bs, lc, ch->lc[lc], ch->request_flag);
+
if (bs =3D=3D 2) {
pl330_fault(ch, PL330_FAULT_OPERAND_INVALID);
return;
@@ -813,12 +826,12 @@ static void pl330_dmalpend(PL330Chan *ch, uint8_t opc=
ode,
if (nf) {
ch->lc[lc]--;
}
- DB_PRINT("loop reiteration\n");
+ trace_pl330_dmalpiter();
ch->pc -=3D args[0];
ch->pc -=3D len + 1;
/* "ch->pc -=3D args[0] + len + 1" is incorrect when args[0] =3D=
=3D 256 */
} else {
- DB_PRINT("loop fallthrough\n");
+ trace_pl330_dmalpfallthrough();
}
}
=20
@@ -886,10 +899,10 @@ static void pl330_dmasev(PL330Chan *ch, uint8_t opcod=
e, uint8_t *args, int len)
}
if (ch->parent->inten & (1 << ev_id)) {
ch->parent->int_status |=3D (1 << ev_id);
- DB_PRINT("event interrupt raised %" PRId8 "\n", ev_id);
+ trace_pl330_dmasev_evirq(ev_id);
qemu_irq_raise(ch->parent->irq[ev_id]);
}
- DB_PRINT("event raised %" PRId8 "\n", ev_id);
+ trace_pl330_dmasev_event(ev_id);
ch->parent->ev_status |=3D (1 << ev_id);
}
=20
@@ -914,9 +927,7 @@ static void pl330_dmast(PL330Chan *ch, uint8_t opcode, =
uint8_t *args, int len)
ch->stall =3D pl330_queue_put_insn(&ch->parent->write_queue, ch->dst,
size, num, inc, 0, ch->tag);
if (!ch->stall) {
- DB_PRINT("channel:%" PRId8 " address:%08" PRIx32 " size:%" PRIx32
- " num:%" PRId32 " %c\n",
- ch->tag, ch->dst, size, num, inc ? 'Y' : 'N');
+ trace_pl330_dmast(ch->tag, ch->dst, size, num, inc ? 'Y' : 'N');
ch->dst +=3D inc ? size * num - (ch->dst & (size - 1)) : 0;
}
}
@@ -992,7 +1003,7 @@ static void pl330_dmawfe(PL330Chan *ch, uint8_t opcode,
}
}
ch->parent->ev_status &=3D ~(1 << ev_id);
- DB_PRINT("event lowered %" PRIx8 "\n", ev_id);
+ trace_pl330_dmawfe(ev_id);
} else {
ch->stall =3D 1;
}
@@ -1135,7 +1146,7 @@ static int pl330_chan_exec(PL330Chan *ch)
ch->stall =3D 0;
insn =3D pl330_fetch_insn(ch);
if (!insn) {
- DB_PRINT("pl330 undefined instruction\n");
+ trace_pl330_chan_exec_undef();
pl330_fault(ch, PL330_FAULT_UNDEF_INSTR);
return 0;
}
@@ -1175,10 +1186,9 @@ static int pl330_exec_cycle(PL330Chan *channel)
int len =3D q->len - (q->addr & (q->len - 1));
=20
dma_memory_read(&address_space_memory, q->addr, buf, len);
- if (PL330_ERR_DEBUG > 1) {
- DB_PRINT("PL330 read from memory @%08" PRIx32 " (size =3D %08x=
):\n",
- q->addr, len);
- qemu_hexdump((char *)buf, stderr, "", len);
+ trace_pl330_exec_cycle(q->addr, len);
+ if (trace_event_get_state_backends(TRACE_PL330_HEXDUMP)) {
+ pl330_hexdump(buf, len);
}
fifo_res =3D pl330_fifo_push(&s->fifo, buf, len, q->tag);
if (fifo_res =3D=3D PL330_FIFO_OK) {
@@ -1207,10 +1217,9 @@ static int pl330_exec_cycle(PL330Chan *channel)
}
if (fifo_res =3D=3D PL330_FIFO_OK || q->z) {
dma_memory_write(&address_space_memory, q->addr, buf, len);
- if (PL330_ERR_DEBUG > 1) {
- DB_PRINT("PL330 read from memory @%08" PRIx32
- " (size =3D %08x):\n", q->addr, len);
- qemu_hexdump((char *)buf, stderr, "", len);
+ trace_pl330_exec_cycle(q->addr, len);
+ if (trace_event_get_state_backends(TRACE_PL330_HEXDUMP)) {
+ pl330_hexdump(buf, len);
}
if (q->inc) {
q->addr +=3D len;
@@ -1252,8 +1261,8 @@ static int pl330_exec_channel(PL330Chan *channel)
=20
static inline void pl330_exec(PL330State *s)
{
- DB_PRINT("\n");
int i, insr_exec;
+ trace_pl330_exec();
do {
insr_exec =3D pl330_exec_channel(&s->manager);
=20
@@ -1298,7 +1307,7 @@ static void pl330_debug_exec(PL330State *s)
args[2] =3D (s->dbg[1] >> 8) & 0xff;
args[3] =3D (s->dbg[1] >> 16) & 0xff;
args[4] =3D (s->dbg[1] >> 24) & 0xff;
- DB_PRINT("chan id: %" PRIx8 "\n", chan_id);
+ trace_pl330_debug_exec(chan_id);
if (s->dbg[0] & 1) {
ch =3D &s->chan[chan_id];
} else {
@@ -1320,6 +1329,7 @@ static void pl330_debug_exec(PL330State *s)
ch->fault_type |=3D PL330_FAULT_DBG_INSTR;
}
if (ch->stall) {
+ trace_pl330_debug_exec_stall();
qemu_log_mask(LOG_UNIMP, "pl330: stall of debug instruction not "
"implemented\n");
}
@@ -1334,7 +1344,7 @@ static void pl330_iomem_write(void *opaque, hwaddr of=
fset,
PL330State *s =3D (PL330State *) opaque;
int i;
=20
- DB_PRINT("addr: %08x data: %08x\n", (unsigned)offset, (unsigned)value);
+ trace_pl330_iomem_write((unsigned)offset, (unsigned)value);
=20
switch (offset) {
case PL330_REG_INTEN:
@@ -1343,7 +1353,7 @@ static void pl330_iomem_write(void *opaque, hwaddr of=
fset,
case PL330_REG_INTCLR:
for (i =3D 0; i < s->num_events; i++) {
if (s->int_status & s->inten & value & (1 << i)) {
- DB_PRINT("event interrupt lowered %d\n", i);
+ trace_pl330_iomem_write_clr(i);
qemu_irq_lower(s->irq[i]);
}
}
@@ -1361,11 +1371,9 @@ static void pl330_iomem_write(void *opaque, hwaddr o=
ffset,
}
break;
case PL330_REG_DBGINST0:
- DB_PRINT("s->dbg[0] =3D %08x\n", (unsigned)value);
s->dbg[0] =3D value;
break;
case PL330_REG_DBGINST1:
- DB_PRINT("s->dbg[1] =3D %08x\n", (unsigned)value);
s->dbg[1] =3D value;
break;
default:
@@ -1489,7 +1497,7 @@ static uint64_t pl330_iomem_read(void *opaque, hwaddr=
offset,
unsigned size)
{
uint32_t ret =3D pl330_iomem_read_imp(opaque, offset);
- DB_PRINT("addr: %08" HWADDR_PRIx " data: %08" PRIx32 "\n", offset, ret=
);
+ trace_pl330_iomem_read((uint32_t)offset, ret);
return ret;
}
=20
diff --git a/hw/dma/trace-events b/hw/dma/trace-events
index e4498428c52..5902ac5969d 100644
--- a/hw/dma/trace-events
+++ b/hw/dma/trace-events
@@ -20,3 +20,27 @@ sparc32_dma_enable_lower(void) "Lower DMA enable"
=20
# i8257.c
i8257_unregistered_dma(int nchan, int dma_pos, int dma_len) "unregistered =
DMA channel used nchan=3D%d dma_pos=3D%d dma_len=3D%d"
+
+# pl330.c
+pl330_fault(void *ptr, uint32_t flags) "ch: %p, flags: 0x%"PRIx32
+pl330_fault_abort(void) "abort interrupt raised"
+pl330_dmaend(void) "DMA ending"
+pl330_dmago(void) "DMA run"
+pl330_dmald(uint32_t chan, uint32_t addr, uint32_t size, uint32_t num, uin=
t32_t ch) "channel:%"PRId8" address:0x%08"PRIx32" size:0x%"PRIx32" num:%"PR=
Id32"%c"
+pl330_dmakill(void) "abort interrupt lowered"
+pl330_dmalpend(uint8_t nf, uint8_t bs, uint8_t lc, uint8_t ch, uint8_t fla=
g) "nf=3D0x%02x bs=3D0x%02x lc=3D0x%02x ch=3D0x%02x flag=3D0x%02x"
+pl330_dmalpiter(void) "loop reiteration"
+pl330_dmalpfallthrough(void) "loop fallthrough"
+pl330_dmasev_evirq(uint8_t ev_id) "event interrupt raised %"PRId8
+pl330_dmasev_event(uint8_t ev_id) "event raised %"PRId8
+pl330_dmast(uint32_t chn, uint32_t addr, uint32_t sz, uint32_t num, uint32=
_t c) "channel:%"PRId8" address:0x%08"PRIx32" size:0x%"PRIx32" num:%"PRId32=
" %c"
+pl330_dmawfe(uint8_t ev_id) "event lowered 0x%"PRIx8
+pl330_chan_exec_undef(void) "undefined instruction"
+pl330_exec_cycle(uint32_t addr, uint32_t size) "PL330 read from memory @0x=
%08"PRIx32" (size =3D 0x%08"PRIx32")"
+pl330_hexdump(uint32_t offset, char *str) " 0x%04"PRIx32":%s"
+pl330_exec(void) "pl330_exec"
+pl330_debug_exec(uint8_t ch) "chan id: 0x%"PRIx8
+pl330_debug_exec_stall(void) "stall of debug instruction not implemented"
+pl330_iomem_write(uint32_t offset, uint32_t value) "addr: 0x%08"PRIx32" da=
ta: 0x%08"PRIx32
+pl330_iomem_write_clr(int i) "event interrupt lowered %d"
+pl330_iomem_read(uint32_t addr, uint32_t data) "addr: 0x%08"PRIx32" data: =
0x%08"PRIx32
--=20
2.20.1