/*
mv_64xx.c - Marvell 88SE6440 SAS/SATA support
Copyright 2007 Red Hat, Inc.
Copyright 2008 Marvell. <kewei@marvell.com>
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2,
or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; see the file COPYING. If not,
write to the Free Software Foundation, 675 Mass Ave, Cambridge,
MA 02139, USA.
*/
#include "mv_sas.h"
#include "mv_64xx.h"
#include "mv_chips.h"
void mvs_detect_porttype(struct mvs_info *mvi, int i)
{
void __iomem *regs = mvi->regs;
u32 reg;
struct mvs_phy *phy = &mvi->phy[i];
/* TODO check & save device type */
reg = mr32(GBL_PORT_TYPE);
if (reg & MODE_SAS_SATA & (1 << i))
phy->phy_type |= PORT_TYPE_SAS;
else
phy->phy_type |= PORT_TYPE_SATA;
}
void mvs_enable_xmt(struct mvs_info *mvi, int PhyId)
{
void __iomem *regs = mvi->regs;
u32 tmp;
tmp = mr32(PCS);
if (mvi->chip->n_phy <= 4)
tmp |= 1 << (PhyId + PCS_EN_PORT_XMT_SHIFT);
else
tmp |= 1 << (PhyId + PCS_EN_PORT_XMT_SHIFT2);
mw32(PCS, tmp);
}
void __devinit mvs_phy_hacks(struct mvs_info *mvi)
{
void __iomem *regs = mvi->regs;
u32 tmp;
/* workaround for SATA R-ERR, to ignore phy glitch */
tmp = mvs_cr32(regs, CMD_PHY_TIMER);
tmp &= ~(1 << 9);
tmp |= (1 << 10);
mvs_cw32(regs, CMD_PHY_TIMER, tmp);
/* enable retry 127 times */
mvs_cw32(regs, CMD_SAS_CTL1, 0x7f7f);
/* extend open frame timeout to max */
tmp = mvs_cr32(regs, CMD_SAS_CTL0);
tmp &= ~0xffff;
tmp |= 0x3fff;
mvs_cw32(regs, CMD_SAS_CTL0, tmp);
/* workaround for WDTIMEOUT , set to 550 ms */
mvs_cw32(regs, CMD_WD_TIMER, 0x86470);
/* not to halt for different port op during wideport link change */
mvs_cw32(regs, CMD_APP_ERR_CONFIG, 0xffefbf7d);
/* workaround for Seagate disk not-found OOB sequence, recv
* COMINIT before sending out COMWAKE */
tmp = mvs_cr32(regs, CMD_PHY_MODE_21);
tmp &= 0x0000ffff;
tmp |= 0x00fa0000;
mvs_cw32(regs, CMD_PHY_MODE_21, tmp);
tmp = mvs_cr32(regs, CMD_PHY_TIMER);
tmp &= 0x1fffffff;
tmp |= (2U << 29); /* 8 ms retry */
mvs_cw32(regs, CMD_PHY_TIMER, tmp);
/* TEST - for phy decoding error, adjust voltage levels */
mw32(P0_VSR_ADDR + 0, 0x8);
mw32(P0_VSR_DATA + 0, 0x2F0);
mw32(P0_VSR_ADDR + 8, 0x8);
mw32(P0_VSR_DATA + 8, 0x2F0);
mw32(P0_VSR_ADDR + 16, 0x8);
mw32(P0_VSR_DATA + 16, 0x2F0);
mw32(P0_VSR_ADDR + 24, 0x8);
mw32(P0_VSR_DATA + 24, 0x2F0);
}
void mvs_hba_interrupt_enable(struct mvs_info *mvi)
{
void __iomem *regs = mvi->regs;
u32 tmp;
tmp = mr32(GBL_CTL);
mw32(GBL_CTL, tmp | INT_EN);
}
void mvs_hba_interrupt_disable(struct mvs_info *mvi)
{
void __iomem *regs = mvi->regs;
u32 tmp;
tmp = mr32(GBL_CTL);
mw32(GBL_CTL, tmp & ~INT_EN);
}
void mvs_free_reg_set(struct mvs_info *mvi, struct mvs_port *port)
{
void __iomem *regs = mvi->regs;
u32 tmp, offs;
u8 *tfs = &port->taskfileset;
if (*tfs == MVS_ID_NOT_MAPPED)
return;
offs = 1U << ((*tfs & 0x0f) + PCS_EN_SATA_REG_SHIFT);
if (*tfs < 16) {
tmp = mr32(PCS);
mw32(PCS, tmp & ~offs);
} else {
tmp = mr32(CTL);
mw32(CTL, tmp & ~offs);
}
tmp = mr32(INT_STAT_SRS) & (1U << *tfs);
if (tmp)
mw32(INT_STAT_SRS, tmp);
*tfs = MVS_ID_NOT_MAPPED;
}
u8 mvs_assign_reg_set(struct mvs_info *mvi, struct mvs_port *port)
{
int i;
u32 tmp, offs;
void __iomem *regs = mvi->regs;
if (port->taskfileset != MVS_ID_NOT_MAPPED)
return 0;
tmp = mr32(PCS);
for (i = 0; i < mvi->chip->srs_sz; i++) {
if (i == 16)
tmp = mr32(CTL);
offs = 1U << ((i & 0x0f) + PCS_EN_SATA_REG_SHIFT);
if (!(tmp & offs)) {
port->taskfileset = i;
if (i < 16)
mw32(PCS, tmp | offs);
else
mw32(CTL, tmp | offs);
tmp = mr32(INT_STAT_SRS) & (1U << i);
if (tmp)
mw32(INT_STAT_SRS, tmp);
return 0;
}
}
return MVS_ID_NOT_MAPPED;
}
