u-boot/drivers/net/fsl_mdio.c
Claudiu Manoil 5be00a0164 net: fsl_mdio: Fix warnings for __iomem pointers
Add the __iomem address space marker for the tsec pointers
to struct tsec_mii_mng memory mapped register regions.
This solves the sparse warnings for mixig normal pointers with
__iomem pointers for tsec. E.g.:

fsl_mdio.c:34:19: warning: incorrect type in argument 1 (different
address spaces)
fsl_mdio.c:34:19:    expected unsigned int volatile [noderef]
<asn:2>*addr
fsl_mdio.c:34:19:    got unsigned int *<noident>
[...]

tsec.c:91:35: warning: incorrect type in argument 1 (different address
spaces)
tsec.c:91:35:    expected struct tsec_mii_mng *phyregs
tsec.c:91:35:    got struct tsec_mii_mng [noderef] <asn:2>*phyregs_sgmii
[...]

tsec.c:680:19: warning: incorrect type in assignment (different address
spaces)
tsec.c:680:19:    expected struct tsec_mii_mng *regs
tsec.c:680:19:    got struct tsec_mii_mng [noderef] <asn:2>*<noident>
[...]

Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
2013-11-22 17:03:15 -06:00

110 lines
2.5 KiB
C

/*
* Copyright 2009-2010, 2013 Freescale Semiconductor, Inc.
* Jun-jie Zhang <b18070@freescale.com>
* Mingkai Hu <Mingkai.hu@freescale.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <miiphy.h>
#include <phy.h>
#include <fsl_mdio.h>
#include <asm/io.h>
#include <asm/errno.h>
#include <asm/fsl_enet.h>
void tsec_local_mdio_write(struct tsec_mii_mng __iomem *phyregs, int port_addr,
int dev_addr, int regnum, int value)
{
int timeout = 1000000;
out_be32(&phyregs->miimadd, (port_addr << 8) | (regnum & 0x1f));
out_be32(&phyregs->miimcon, value);
asm("sync");
while ((in_be32(&phyregs->miimind) & MIIMIND_BUSY) && timeout--)
;
}
int tsec_local_mdio_read(struct tsec_mii_mng __iomem *phyregs, int port_addr,
int dev_addr, int regnum)
{
int value;
int timeout = 1000000;
/* Put the address of the phy, and the register
* number into MIIMADD */
out_be32(&phyregs->miimadd, (port_addr << 8) | (regnum & 0x1f));
/* Clear the command register, and wait */
out_be32(&phyregs->miimcom, 0);
asm("sync");
/* Initiate a read command, and wait */
out_be32(&phyregs->miimcom, MIIMCOM_READ_CYCLE);
asm("sync");
/* Wait for the the indication that the read is done */
while ((in_be32(&phyregs->miimind) & (MIIMIND_NOTVALID | MIIMIND_BUSY))
&& timeout--)
;
/* Grab the value read from the PHY */
value = in_be32(&phyregs->miimstat);
return value;
}
static int fsl_pq_mdio_reset(struct mii_dev *bus)
{
struct tsec_mii_mng __iomem *regs =
(struct tsec_mii_mng __iomem *)bus->priv;
/* Reset MII (due to new addresses) */
out_be32(&regs->miimcfg, MIIMCFG_RESET_MGMT);
out_be32(&regs->miimcfg, MIIMCFG_INIT_VALUE);
while (in_be32(&regs->miimind) & MIIMIND_BUSY)
;
return 0;
}
int tsec_phy_read(struct mii_dev *bus, int addr, int dev_addr, int regnum)
{
struct tsec_mii_mng __iomem *phyregs =
(struct tsec_mii_mng __iomem *)bus->priv;
return tsec_local_mdio_read(phyregs, addr, dev_addr, regnum);
}
int tsec_phy_write(struct mii_dev *bus, int addr, int dev_addr, int regnum,
u16 value)
{
struct tsec_mii_mng __iomem *phyregs =
(struct tsec_mii_mng __iomem *)bus->priv;
tsec_local_mdio_write(phyregs, addr, dev_addr, regnum, value);
return 0;
}
int fsl_pq_mdio_init(bd_t *bis, struct fsl_pq_mdio_info *info)
{
struct mii_dev *bus = mdio_alloc();
if (!bus) {
printf("Failed to allocate FSL MDIO bus\n");
return -1;
}
bus->read = tsec_phy_read;
bus->write = tsec_phy_write;
bus->reset = fsl_pq_mdio_reset;
sprintf(bus->name, info->name);
bus->priv = (void *)info->regs;
return mdio_register(bus);
}