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xilinx_spips: Multiple debug verbosity levels 

The debug printfs on every SPI operation is extremely verbose. Add
a second level of debug for this.

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Message-id: f63478b8e5b29cc011cdc10e29f8537bb2fc2b5e.1369117359.git.peter.crosthwaite@xilinx.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Crosthwaite 2013-06-03 17:17:43 +01:00 committed by Peter Maydell
parent c37fc509d2
commit 4a5b6fa8d9
1 changed files with 42 additions and 28 deletions
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70
hw/ssi/xilinx_spips.c
View File

@ -30,15 +30,17 @@
#include "hw/ssi.h"
#include "qemu/bitops.h"
#ifdef XILINX_SPIPS_ERR_DEBUG
#define DB_PRINT(...) do { \
fprintf(stderr, ": %s: ", __func__); \
fprintf(stderr, ## __VA_ARGS__); \
} while (0);
#else
#define DB_PRINT(...)
#ifndef XILINX_SPIPS_ERR_DEBUG
#define XILINX_SPIPS_ERR_DEBUG 0
#endif
#define DB_PRINT_L(level, ...) do { \
if (XILINX_SPIPS_ERR_DEBUG > (level)) { \
fprintf(stderr, ": %s: ", __func__); \
fprintf(stderr, ## __VA_ARGS__); \
} \
} while (0);
/* config register */
#define R_CONFIG (0x00 / 4)
#define IFMODE (1 << 31)
@ -210,10 +212,10 @@ static void xilinx_spips_update_cs_lines(XilinxSPIPS *s)
(s->num_cs * s->num_busses);
if (xilinx_spips_cs_is_set(s, i, field) && !found) {
DB_PRINT("selecting slave %d\n", i);
DB_PRINT_L(0, "selecting slave %d\n", i);
qemu_set_irq(s->cs_lines[cs_to_set], 0);
} else {
DB_PRINT("deselecting slave %d\n", i);
DB_PRINT_L(0, "deselecting slave %d\n", i);
qemu_set_irq(s->cs_lines[cs_to_set], 1);
}
}
@ -223,7 +225,7 @@ static void xilinx_spips_update_cs_lines(XilinxSPIPS *s)
}
if (!found) {
s->snoop_state = SNOOP_CHECKING;
DB_PRINT("moving to snoop check state\n");
DB_PRINT_L(1, "moving to snoop check state\n");
}
}
@ -306,6 +308,8 @@ static inline void stripe8(uint8_t *x, int num, bool dir)
static void xilinx_spips_flush_txfifo(XilinxSPIPS *s)
{
int debug_level = 0;
for (;;) {
int i;
uint8_t tx = 0;
@ -330,14 +334,14 @@ static void xilinx_spips_flush_txfifo(XilinxSPIPS *s)
}
for (i = 0; i < num_effective_busses(s); ++i) {
DB_PRINT("tx = %02x\n", tx_rx[i]);
DB_PRINT_L(debug_level, "tx = %02x\n", tx_rx[i]);
tx_rx[i] = ssi_transfer(s->spi[i], (uint32_t)tx_rx[i]);
DB_PRINT("rx = %02x\n", tx_rx[i]);
DB_PRINT_L(debug_level, "rx = %02x\n", tx_rx[i]);
}
if (fifo8_is_full(&s->rx_fifo)) {
s->regs[R_INTR_STATUS] |= IXR_RX_FIFO_OVERFLOW;
DB_PRINT("rx FIFO overflow");
DB_PRINT_L(0, "rx FIFO overflow");
} else if (s->snoop_state == SNOOP_STRIPING) {
stripe8(tx_rx, num_effective_busses(s), true);
for (i = 0; i < num_effective_busses(s); ++i) {
@ -347,7 +351,8 @@ static void xilinx_spips_flush_txfifo(XilinxSPIPS *s)
fifo8_push(&s->rx_fifo, (uint8_t)tx_rx[0]);
}
DB_PRINT("initial snoop state: %x\n", (unsigned)s->snoop_state);
DB_PRINT_L(debug_level, "initial snoop state: %x\n",
(unsigned)s->snoop_state);
switch (s->snoop_state) {
case (SNOOP_CHECKING):
switch (tx) { /* new instruction code */
@ -372,11 +377,17 @@ static void xilinx_spips_flush_txfifo(XilinxSPIPS *s)
break;
case (SNOOP_STRIPING):
case (SNOOP_NONE):
/* Once we hit the boring stuff - squelch debug noise */
if (!debug_level) {
DB_PRINT_L(0, "squelching debug info ....\n");
debug_level = 1;
}
break;
default:
s->snoop_state--;
}
DB_PRINT("final snoop state: %x\n", (unsigned)s->snoop_state);
DB_PRINT_L(debug_level, "final snoop state: %x\n",
(unsigned)s->snoop_state);
}
}
@ -406,7 +417,7 @@ static uint64_t xilinx_spips_read(void *opaque, hwaddr addr,
case R_INTR_STATUS:
ret = s->regs[addr] & IXR_ALL;
s->regs[addr] = 0;
DB_PRINT("addr=" TARGET_FMT_plx " = %x\n", addr * 4, ret);
DB_PRINT_L(0, "addr=" TARGET_FMT_plx " = %x\n", addr * 4, ret);
return ret;
case R_INTR_MASK:
mask = IXR_ALL;
@ -427,11 +438,12 @@ static uint64_t xilinx_spips_read(void *opaque, hwaddr addr,
break;
case R_RX_DATA:
rx_data_bytes(s, &ret, s->num_txrx_bytes);
DB_PRINT("addr=" TARGET_FMT_plx " = %x\n", addr * 4, ret);
DB_PRINT_L(0, "addr=" TARGET_FMT_plx " = %x\n", addr * 4, ret);
xilinx_spips_update_ixr(s);
return ret;
}
DB_PRINT("addr=" TARGET_FMT_plx " = %x\n", addr * 4, s->regs[addr] & mask);
DB_PRINT_L(0, "addr=" TARGET_FMT_plx " = %x\n", addr * 4,
s->regs[addr] & mask);
return s->regs[addr] & mask;
}
@ -457,7 +469,7 @@ static void xilinx_spips_write(void *opaque, hwaddr addr,
int man_start_com = 0;
XilinxSPIPS *s = opaque;
DB_PRINT("addr=" TARGET_FMT_plx " = %x\n", addr, (unsigned)value);
DB_PRINT_L(0, "addr=" TARGET_FMT_plx " = %x\n", addr, (unsigned)value);
addr >>= 2;
switch (addr) {
case R_CONFIG:
@ -551,7 +563,8 @@ lqspi_read(void *opaque, hwaddr addr, unsigned int size)
if (addr >= q->lqspi_cached_addr &&
addr <= q->lqspi_cached_addr + LQSPI_CACHE_SIZE - 4) {
ret = q->lqspi_buf[(addr - q->lqspi_cached_addr) >> 2];
DB_PRINT("addr: %08x, data: %08x\n", (unsigned)addr, (unsigned)ret);
DB_PRINT_L(1, "addr: %08x, data: %08x\n", (unsigned)addr,
(unsigned)ret);
return ret;
} else {
int flash_addr = (addr / num_effective_busses(s));
@ -562,17 +575,18 @@ lqspi_read(void *opaque, hwaddr addr, unsigned int size)
s->regs[R_LQSPI_STS] &= ~LQSPI_CFG_U_PAGE;
s->regs[R_LQSPI_STS] |= slave ? LQSPI_CFG_U_PAGE : 0;
DB_PRINT("config reg status: %08x\n", s->regs[R_LQSPI_CFG]);
DB_PRINT_L(0, "config reg status: %08x\n", s->regs[R_LQSPI_CFG]);
fifo8_reset(&s->tx_fifo);
fifo8_reset(&s->rx_fifo);
/* instruction */
DB_PRINT("pushing read instruction: %02x\n",
(uint8_t)(s->regs[R_LQSPI_CFG] & LQSPI_CFG_INST_CODE));
DB_PRINT_L(0, "pushing read instruction: %02x\n",
(unsigned)(uint8_t)(s->regs[R_LQSPI_CFG] &
LQSPI_CFG_INST_CODE));
fifo8_push(&s->tx_fifo, s->regs[R_LQSPI_CFG] & LQSPI_CFG_INST_CODE);
/* read address */
DB_PRINT("pushing read address %06x\n", flash_addr);
DB_PRINT_L(0, "pushing read address %06x\n", flash_addr);
fifo8_push(&s->tx_fifo, (uint8_t)(flash_addr >> 16));
fifo8_push(&s->tx_fifo, (uint8_t)(flash_addr >> 8));
fifo8_push(&s->tx_fifo, (uint8_t)flash_addr);
@ -585,14 +599,14 @@ lqspi_read(void *opaque, hwaddr addr, unsigned int size)
/* dummy bytes */
for (i = 0; i < (extract32(s->regs[R_LQSPI_CFG], LQSPI_CFG_DUMMY_SHIFT,
LQSPI_CFG_DUMMY_WIDTH)); ++i) {
DB_PRINT("pushing dummy byte\n");
DB_PRINT_L(0, "pushing dummy byte\n");
fifo8_push(&s->tx_fifo, 0);
}
xilinx_spips_update_cs_lines(s);
xilinx_spips_flush_txfifo(s);
fifo8_reset(&s->rx_fifo);
DB_PRINT("starting QSPI data read\n");
DB_PRINT_L(0, "starting QSPI data read\n");
for (i = 0; i < LQSPI_CACHE_SIZE / 4; ++i) {
tx_data_bytes(s, 0, 4);
@ -626,7 +640,7 @@ static void xilinx_spips_realize(DeviceState *dev, Error **errp)
XilinxSPIPSClass *xsc = XILINX_SPIPS_GET_CLASS(s);
int i;
DB_PRINT("realized spips\n");
DB_PRINT_L(0, "realized spips\n");
s->spi = g_new(SSIBus *, s->num_busses);
for (i = 0; i < s->num_busses; ++i) {
@ -658,7 +672,7 @@ static void xilinx_qspips_realize(DeviceState *dev, Error **errp)
XilinxQSPIPS *q = XILINX_QSPIPS(dev);
SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
DB_PRINT("realized qspips\n");
DB_PRINT_L(0, "realized qspips\n");
s->num_busses = 2;
s->num_cs = 2;