int mvl88e6064_readmii(int p, int r)
{
union cvmx_smix_cmd smi_cmd;
union cvmx_smix_wr_dat smi_wr;
union cvmx_smix_rd_dat smi_rd;
/* Write out address register */
smi_wr.u64 = 0;
smi_wr.s.dat = 0x9800 | (p << 5) | r;
cvmx_write_csr(CVMX_SMIX_WR_DAT(0), smi_wr.u64);
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 0;
smi_cmd.s.phy_adr = 0x10;
smi_cmd.s.reg_adr = 0;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(0));
} while (smi_wr.s.pending);
retry:
/* Check BUSY bit not set anymore */
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 1;
smi_cmd.s.phy_adr = 0x10;
smi_cmd.s.reg_adr = 0;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(0));
} while (smi_rd.s.pending);
if ((smi_rd.s.val) && (smi_rd.s.dat & 0x8000))
goto retry;
/* Read the register value from DATA register */
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 1;
smi_cmd.s.phy_adr = 0x10;
smi_cmd.s.reg_adr = 1;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(0));
} while (smi_rd.s.pending);
if (smi_rd.s.val)
return smi_rd.s.dat;
return 0xffff;
}
static int octeon_mdiobus_read(struct mii_bus *bus, int phy_id, int regnum)
{
struct octeon_mdiobus *p = bus->priv;
union cvmx_smix_cmd smi_cmd;
union cvmx_smix_rd_dat smi_rd;
int timeout = 1000;
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 1; /* MDIO_CLAUSE_22_READ */
smi_cmd.s.phy_adr = phy_id;
smi_cmd.s.reg_adr = regnum;
cvmx_write_csr(CVMX_SMIX_CMD(p->unit), smi_cmd.u64);
do {
/*
* Wait 1000 clocks so we don't saturate the RSL bus
* doing reads.
*/
cvmx_wait(1000);
smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(p->unit));
} while (smi_rd.s.pending && --timeout);
if (smi_rd.s.val)
return smi_rd.s.dat;
else
return -EIO;
}
void mvl88e6064_writemii(int p, int r, int v)
{
union cvmx_smix_cmd smi_cmd;
union cvmx_smix_wr_dat smi_wr;
union cvmx_smix_rd_dat smi_rd;
/* Write out data register first */
smi_wr.u64 = 0;
smi_wr.s.dat = v & 0xffff;
cvmx_write_csr(CVMX_SMIX_WR_DAT(0), smi_wr.u64);
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 0;
smi_cmd.s.phy_adr = 0x10;
smi_cmd.s.reg_adr = 1;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(0));
} while (smi_wr.s.pending);
/* Write out command/address register */
smi_wr.u64 = 0;
smi_wr.s.dat = 0x9400 | (p << 5) | r;
cvmx_write_csr(CVMX_SMIX_WR_DAT(0), smi_wr.u64);
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 0;
smi_cmd.s.phy_adr = 0x10;
smi_cmd.s.reg_adr = 0;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(0));
} while (smi_wr.s.pending);
retry:
/* Check BUSY bit not set anymore */
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 1;
smi_cmd.s.phy_adr = 0x10;
smi_cmd.s.reg_adr = 0;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(0));
} while (smi_rd.s.pending);
if (smi_rd.s.dat & 0x8000)
goto retry;
}
static int cvm_oct_mdio_read(struct net_device *dev, int phy_id, int location)
{
union cvmx_smix_cmd smi_cmd;
union cvmx_smix_rd_dat smi_rd;
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 1;
smi_cmd.s.phy_adr = phy_id;
smi_cmd.s.reg_adr = location;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
if (!in_interrupt())
yield();
smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(0));
} while (smi_rd.s.pending);
if (smi_rd.s.val)
return smi_rd.s.dat;
else
return 0;
}
/**
* Perform an MII read. Called by the generic MII routines
*
* @dev: Device to perform read for
* @phy_id: The MII phy id
* @location: Register location to read
* Returns Result from the read or zero on failure
*/
static int cvm_oct_mdio_read(struct net_device *dev, int phy_id, int location)
{
union cvmx_smix_cmd smi_cmd;
union cvmx_smix_rd_dat smi_rd;
#ifdef CONFIG_SG590
if (phy_id == 16) {
smi_rd.s.dat = mvl88e6064_readmii(0x1a, location);
return smi_rd.s.dat;
} else if (phy_id >= 32) {
/*
* On the SG590, we map all of the switch registers
* above address 32.
*/
smi_rd.s.dat = mvl88e6064_readmii((phy_id % 32), location);
return smi_rd.s.dat;
}
#endif
smi_cmd.u64 = 0;
smi_cmd.s.phy_op = 1;
smi_cmd.s.phy_adr = phy_id;
smi_cmd.s.reg_adr = location;
cvmx_write_csr(CVMX_SMIX_CMD(0), smi_cmd.u64);
do {
if (!in_interrupt())
yield();
smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(0));
} while (smi_rd.s.pending);
if (smi_rd.s.val)
return smi_rd.s.dat;
else
return 0;
}
