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raw/ifpga/base: fix NIOS SPI init

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Add fecmode setting on NIOS SPI primary initialization.
this SPI is shared by NIOS core inside FPGA, NIOS will
use this SPI primary to do some one-time initialization
after power up, and then release the control to DPDK.

Fix the timeout initialization for polling the
NIOS_INIT_DONE.

Fixes: bc44402f ("raw/ifpga/base: configure FEC mode")
Cc: stable@dpdk.org

Signed-off-by: Tianfei Zhang <tianfei.zhang@intel.com>
Acked-by: Rosen Xu <rosen.xu@intel.com>
This commit is contained in:
Tianfei Zhang 2020-07-15 05:35:09 +08:00 committed by Thomas Monjalon
parent 6f583cd8b0
commit cbcf2263fb
2 changed files with 21 additions and 7 deletions
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27
drivers/raw/ifpga/base/ifpga_fme.c
View file

@ -979,28 +979,32 @@ struct ifpga_feature_ops fme_spi_master_ops = {
static int nios_spi_wait_init_done(struct altera_spi_device *dev)
{
u32 val = 0;
unsigned long timeout = msecs_to_timer_cycles(10000);
unsigned long timeout = rte_get_timer_cycles() +
msecs_to_timer_cycles(10000);
unsigned long ticks;
int major_version;
int fecmode = FEC_MODE_NO;
if (spi_reg_read(dev, NIOS_VERSION, &val))
return -EIO;
major_version = (val >> NIOS_VERSION_MAJOR_SHIFT) &
NIOS_VERSION_MAJOR;
dev_debug(dev, "A10 NIOS FW version %d\n", major_version);
major_version =
(val & NIOS_VERSION_MAJOR) >> NIOS_VERSION_MAJOR_SHIFT;
dev_info(dev, "A10 NIOS FW version %d\n", major_version);
if (major_version >= 3) {
/* read NIOS_INIT to check if PKVL INIT done or not */
if (spi_reg_read(dev, NIOS_INIT, &val))
return -EIO;
dev_debug(dev, "read NIOS_INIT: 0x%x\n", val);
/* check if PKVLs are initialized already */
if (val & NIOS_INIT_DONE || val & NIOS_INIT_START)
goto nios_init_done;
/* start to config the default FEC mode */
val = NIOS_INIT_START;
val = fecmode | NIOS_INIT_START;
if (spi_reg_write(dev, NIOS_INIT, val))
return -EIO;
@ -1010,14 +1014,23 @@ static int nios_spi_wait_init_done(struct altera_spi_device *dev)
do {
if (spi_reg_read(dev, NIOS_INIT, &val))
return -EIO;
if (val)
if (val & NIOS_INIT_DONE)
break;
ticks = rte_get_timer_cycles();
if (time_after(ticks, timeout))
return -ETIMEDOUT;
msleep(100);
} while (!val);
} while (1);
/* get the fecmode */
if (spi_reg_read(dev, NIOS_INIT, &val))
return -EIO;
dev_debug(dev, "read NIOS_INIT: 0x%x\n", val);
fecmode = (val & REQ_FEC_MODE) >> REQ_FEC_MODE_SHIFT;
dev_info(dev, "fecmode: 0x%x, %s\n", fecmode,
(fecmode == FEC_MODE_KR) ? "kr" :
((fecmode == FEC_MODE_RS) ? "rs" : "no"));
return 0;
}

1
drivers/raw/ifpga/base/opae_spi.h
View file

@ -153,6 +153,7 @@ int spi_reg_read(struct altera_spi_device *dev, u32 reg, u32 *val);
#define NIOS_INIT 0x1000
#define REQ_FEC_MODE GENMASK(23, 8)
#define REQ_FEC_MODE_SHIFT 8
#define FEC_MODE_NO 0x0
#define FEC_MODE_KR 0x5555
#define FEC_MODE_RS 0xaaaa