drivers/scsi/mvsas/mv_64xx.c - kernel/prism - Git at Google

 /*
  * Marvell 88SE64xx hardware specific
  *
  * Copyright 2007 Red Hat, Inc.
  * Copyright 2008 Marvell. <kewei@marvell.com>
  *
  * This file is licensed under GPLv2.
  *
  * 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; version 2 of the
  * License.
  *
  * 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; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  * USA
 */

 #include "mv_sas.h"
 #include "mv_64xx.h"
 #include "mv_chips.h"

 static void mvs_64xx_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(MVS_GBL_PORT_TYPE);
 	phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
 	if (reg & MODE_SAS_SATA & (1 << i))
 		phy->phy_type |= PORT_TYPE_SAS;
 	else
 		phy->phy_type |= PORT_TYPE_SATA;
 }

 static void __devinit mvs_64xx_enable_xmt(struct mvs_info *mvi, int phy_id)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp;

 	tmp = mr32(MVS_PCS);
 	if (mvi->chip->n_phy <= 4)
 		tmp |= 1 << (phy_id + PCS_EN_PORT_XMT_SHIFT);
 	else
 		tmp |= 1 << (phy_id + PCS_EN_PORT_XMT_SHIFT2);
 	mw32(MVS_PCS, tmp);
 }

 static void __devinit mvs_64xx_phy_hacks(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs;

 	mvs_phy_hacks(mvi);

 	if (!(mvi->flags & MVF_FLAG_SOC)) {
 		/* TEST - for phy decoding error, adjust voltage levels */
 		mw32(MVS_P0_VSR_ADDR + 0, 0x8);
 		mw32(MVS_P0_VSR_DATA + 0, 0x2F0);

 		mw32(MVS_P0_VSR_ADDR + 8, 0x8);
 		mw32(MVS_P0_VSR_DATA + 8, 0x2F0);

 		mw32(MVS_P0_VSR_ADDR + 16, 0x8);
 		mw32(MVS_P0_VSR_DATA + 16, 0x2F0);

 		mw32(MVS_P0_VSR_ADDR + 24, 0x8);
 		mw32(MVS_P0_VSR_DATA + 24, 0x2F0);
 	} else {
 		int i;
 		/* disable auto port detection */
 		mw32(MVS_GBL_PORT_TYPE, 0);
 		for (i = 0; i < mvi->chip->n_phy; i++) {
 			mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE7);
 			mvs_write_port_vsr_data(mvi, i, 0x90000000);
 			mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE9);
 			mvs_write_port_vsr_data(mvi, i, 0x50f2);
 			mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE11);
 			mvs_write_port_vsr_data(mvi, i, 0x0e);
 		}
 	}
 }

 static void mvs_64xx_stp_reset(struct mvs_info *mvi, u32 phy_id)
 {
 	void __iomem *regs = mvi->regs;
 	u32 reg, tmp;

 	if (!(mvi->flags & MVF_FLAG_SOC)) {
 		if (phy_id < 4)
 			pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &reg);
 		else
 			pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &reg);

 	} else
 		reg = mr32(MVS_PHY_CTL);

 	tmp = reg;
 	if (phy_id < 4)
 		tmp |= (1U << phy_id) << PCTL_LINK_OFFS;
 	else
 		tmp |= (1U << (phy_id - 4)) << PCTL_LINK_OFFS;

 	if (!(mvi->flags & MVF_FLAG_SOC)) {
 		if (phy_id < 4) {
 			pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);
 			mdelay(10);
 			pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, reg);
 		} else {
 			pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
 			mdelay(10);
 			pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, reg);
 		}
 	} else {
 		mw32(MVS_PHY_CTL, tmp);
 		mdelay(10);
 		mw32(MVS_PHY_CTL, reg);
 	}
 }

 static void mvs_64xx_phy_reset(struct mvs_info *mvi, u32 phy_id, int hard)
 {
 	u32 tmp;
 	tmp = mvs_read_port_irq_stat(mvi, phy_id);
 	tmp &= ~PHYEV_RDY_CH;
 	mvs_write_port_irq_stat(mvi, phy_id, tmp);
 	tmp = mvs_read_phy_ctl(mvi, phy_id);
 	if (hard)
 		tmp |= PHY_RST_HARD;
 	else
 		tmp |= PHY_RST;
 	mvs_write_phy_ctl(mvi, phy_id, tmp);
 	if (hard) {
 		do {
 			tmp = mvs_read_phy_ctl(mvi, phy_id);
 		} while (tmp & PHY_RST_HARD);
 	}
 }

 static int __devinit mvs_64xx_chip_reset(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp;
 	int i;

 	/* make sure interrupts are masked immediately (paranoia) */
 	mw32(MVS_GBL_CTL, 0);
 	tmp = mr32(MVS_GBL_CTL);

 	/* Reset Controller */
 	if (!(tmp & HBA_RST)) {
 		if (mvi->flags & MVF_PHY_PWR_FIX) {
 			pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
 			tmp &= ~PCTL_PWR_OFF;
 			tmp |= PCTL_PHY_DSBL;
 			pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);

 			pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
 			tmp &= ~PCTL_PWR_OFF;
 			tmp |= PCTL_PHY_DSBL;
 			pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
 		}
 	}

 	/* make sure interrupts are masked immediately (paranoia) */
 	mw32(MVS_GBL_CTL, 0);
 	tmp = mr32(MVS_GBL_CTL);

 	/* Reset Controller */
 	if (!(tmp & HBA_RST)) {
 		/* global reset, incl. COMRESET/H_RESET_N (self-clearing) */
 		mw32_f(MVS_GBL_CTL, HBA_RST);
 	}

 	/* wait for reset to finish; timeout is just a guess */
 	i = 1000;
 	while (i-- > 0) {
 		msleep(10);

 		if (!(mr32(MVS_GBL_CTL) & HBA_RST))
 			break;
 	}
 	if (mr32(MVS_GBL_CTL) & HBA_RST) {
 		dev_printk(KERN_ERR, mvi->dev, "HBA reset failed\n");
 		return -EBUSY;
 	}
 	return 0;
 }

 static void mvs_64xx_phy_disable(struct mvs_info *mvi, u32 phy_id)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp;
 	if (!(mvi->flags & MVF_FLAG_SOC)) {
 		u32 offs;
 		if (phy_id < 4)
 			offs = PCR_PHY_CTL;
 		else {
 			offs = PCR_PHY_CTL2;
 			phy_id -= 4;
 		}
 		pci_read_config_dword(mvi->pdev, offs, &tmp);
 		tmp |= 1U << (PCTL_PHY_DSBL_OFFS + phy_id);
 		pci_write_config_dword(mvi->pdev, offs, tmp);
 	} else {
 		tmp = mr32(MVS_PHY_CTL);
 		tmp |= 1U << (PCTL_PHY_DSBL_OFFS + phy_id);
 		mw32(MVS_PHY_CTL, tmp);
 	}
 }

 static void mvs_64xx_phy_enable(struct mvs_info *mvi, u32 phy_id)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp;
 	if (!(mvi->flags & MVF_FLAG_SOC)) {
 		u32 offs;
 		if (phy_id < 4)
 			offs = PCR_PHY_CTL;
 		else {
 			offs = PCR_PHY_CTL2;
 			phy_id -= 4;
 		}
 		pci_read_config_dword(mvi->pdev, offs, &tmp);
 		tmp &= ~(1U << (PCTL_PHY_DSBL_OFFS + phy_id));
 		pci_write_config_dword(mvi->pdev, offs, tmp);
 	} else {
 		tmp = mr32(MVS_PHY_CTL);
 		tmp &= ~(1U << (PCTL_PHY_DSBL_OFFS + phy_id));
 		mw32(MVS_PHY_CTL, tmp);
 	}
 }

 static int __devinit mvs_64xx_init(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs;
 	int i;
 	u32 tmp, cctl;

 	if (mvi->pdev && mvi->pdev->revision == 0)
 		mvi->flags |= MVF_PHY_PWR_FIX;
 	if (!(mvi->flags & MVF_FLAG_SOC)) {
 		mvs_show_pcie_usage(mvi);
 		tmp = mvs_64xx_chip_reset(mvi);
 		if (tmp)
 			return tmp;
 	} else {
 		tmp = mr32(MVS_PHY_CTL);
 		tmp &= ~PCTL_PWR_OFF;
 		tmp |= PCTL_PHY_DSBL;
 		mw32(MVS_PHY_CTL, tmp);
 	}

 	/* Init Chip */
 	/* make sure RST is set; HBA_RST /should/ have done that for us */
 	cctl = mr32(MVS_CTL) & 0xFFFF;
 	if (cctl & CCTL_RST)
 		cctl &= ~CCTL_RST;
 	else
 		mw32_f(MVS_CTL, cctl | CCTL_RST);

 	if (!(mvi->flags & MVF_FLAG_SOC)) {
 		/* write to device control _AND_ device status register */
 		pci_read_config_dword(mvi->pdev, PCR_DEV_CTRL, &tmp);
 		tmp &= ~PRD_REQ_MASK;
 		tmp |= PRD_REQ_SIZE;
 		pci_write_config_dword(mvi->pdev, PCR_DEV_CTRL, tmp);

 		pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
 		tmp &= ~PCTL_PWR_OFF;
 		tmp &= ~PCTL_PHY_DSBL;
 		pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);

 		pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
 		tmp &= PCTL_PWR_OFF;
 		tmp &= ~PCTL_PHY_DSBL;
 		pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
 	} else {
 		tmp = mr32(MVS_PHY_CTL);
 		tmp &= ~PCTL_PWR_OFF;
 		tmp |= PCTL_COM_ON;
 		tmp &= ~PCTL_PHY_DSBL;
 		tmp |= PCTL_LINK_RST;
 		mw32(MVS_PHY_CTL, tmp);
 		msleep(100);
 		tmp &= ~PCTL_LINK_RST;
 		mw32(MVS_PHY_CTL, tmp);
 		msleep(100);
 	}

 	/* reset control */
 	mw32(MVS_PCS, 0);		/* MVS_PCS */
 	/* init phys */
 	mvs_64xx_phy_hacks(mvi);

 	/* enable auto port detection */
 	mw32(MVS_GBL_PORT_TYPE, MODE_AUTO_DET_EN);

 	mw32(MVS_CMD_LIST_LO, mvi->slot_dma);
 	mw32(MVS_CMD_LIST_HI, (mvi->slot_dma >> 16) >> 16);

 	mw32(MVS_RX_FIS_LO, mvi->rx_fis_dma);
 	mw32(MVS_RX_FIS_HI, (mvi->rx_fis_dma >> 16) >> 16);

 	mw32(MVS_TX_CFG, MVS_CHIP_SLOT_SZ);
 	mw32(MVS_TX_LO, mvi->tx_dma);
 	mw32(MVS_TX_HI, (mvi->tx_dma >> 16) >> 16);

 	mw32(MVS_RX_CFG, MVS_RX_RING_SZ);
 	mw32(MVS_RX_LO, mvi->rx_dma);
 	mw32(MVS_RX_HI, (mvi->rx_dma >> 16) >> 16);

 	for (i = 0; i < mvi->chip->n_phy; i++) {
 		/* set phy local SAS address */
 		/* should set little endian SAS address to 64xx chip */
 		mvs_set_sas_addr(mvi, i, PHYR_ADDR_LO, PHYR_ADDR_HI,
 				cpu_to_be64(mvi->phy[i].dev_sas_addr));

 		mvs_64xx_enable_xmt(mvi, i);

 		mvs_64xx_phy_reset(mvi, i, 1);
 		msleep(500);
 		mvs_64xx_detect_porttype(mvi, i);
 	}
 	if (mvi->flags & MVF_FLAG_SOC) {
 		/* set select registers */
 		writel(0x0E008000, regs + 0x000);
 		writel(0x59000008, regs + 0x004);
 		writel(0x20, regs + 0x008);
 		writel(0x20, regs + 0x00c);
 		writel(0x20, regs + 0x010);
 		writel(0x20, regs + 0x014);
 		writel(0x20, regs + 0x018);
 		writel(0x20, regs + 0x01c);
 	}
 	for (i = 0; i < mvi->chip->n_phy; i++) {
 		/* clear phy int status */
 		tmp = mvs_read_port_irq_stat(mvi, i);
 		tmp &= ~PHYEV_SIG_FIS;
 		mvs_write_port_irq_stat(mvi, i, tmp);

 		/* set phy int mask */
 		tmp = PHYEV_RDY_CH | PHYEV_BROAD_CH | PHYEV_UNASSOC_FIS |
 			PHYEV_ID_DONE | PHYEV_DCDR_ERR | PHYEV_CRC_ERR |
 			PHYEV_DEC_ERR;
 		mvs_write_port_irq_mask(mvi, i, tmp);

 		msleep(100);
 		mvs_update_phyinfo(mvi, i, 1);
 	}

 	/* FIXME: update wide port bitmaps */

 	/* little endian for open address and command table, etc. */
 	/*
 	 * it seems that ( from the spec ) turning on big-endian won't
 	 * do us any good on big-endian machines, need further confirmation
 	 */
 	cctl = mr32(MVS_CTL);
 	cctl |= CCTL_ENDIAN_CMD;
 	cctl |= CCTL_ENDIAN_DATA;
 	cctl &= ~CCTL_ENDIAN_OPEN;
 	cctl |= CCTL_ENDIAN_RSP;
 	mw32_f(MVS_CTL, cctl);

 	/* reset CMD queue */
 	tmp = mr32(MVS_PCS);
 	tmp |= PCS_CMD_RST;
 	mw32(MVS_PCS, tmp);
 	/* interrupt coalescing may cause missing HW interrput in some case,
 	 * and the max count is 0x1ff, while our max slot is 0x200,
 	 * it will make count 0.
 	 */
 	tmp = 0;
 	mw32(MVS_INT_COAL, tmp);

 	tmp = 0x100;
 	mw32(MVS_INT_COAL_TMOUT, tmp);

 	/* ladies and gentlemen, start your engines */
 	mw32(MVS_TX_CFG, 0);
 	mw32(MVS_TX_CFG, MVS_CHIP_SLOT_SZ | TX_EN);
 	mw32(MVS_RX_CFG, MVS_RX_RING_SZ | RX_EN);
 	/* enable CMD/CMPL_Q/RESP mode */
 	mw32(MVS_PCS, PCS_SATA_RETRY | PCS_FIS_RX_EN |
 		PCS_CMD_EN | PCS_CMD_STOP_ERR);

 	/* enable completion queue interrupt */
 	tmp = (CINT_PORT_MASK | CINT_DONE | CINT_MEM | CINT_SRS | CINT_CI_STOP |
 		CINT_DMA_PCIE);

 	mw32(MVS_INT_MASK, tmp);

 	/* Enable SRS interrupt */
 	mw32(MVS_INT_MASK_SRS_0, 0xFFFF);

 	return 0;
 }

 static int mvs_64xx_ioremap(struct mvs_info *mvi)
 {
 	if (!mvs_ioremap(mvi, 4, 2))
 		return 0;
 	return -1;
 }

 static void mvs_64xx_iounmap(struct mvs_info *mvi)
 {
 	mvs_iounmap(mvi->regs);
 	mvs_iounmap(mvi->regs_ex);
 }

 static void mvs_64xx_interrupt_enable(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp;

 	tmp = mr32(MVS_GBL_CTL);
 	mw32(MVS_GBL_CTL, tmp | INT_EN);
 }

 static void mvs_64xx_interrupt_disable(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp;

 	tmp = mr32(MVS_GBL_CTL);
 	mw32(MVS_GBL_CTL, tmp & ~INT_EN);
 }

 static u32 mvs_64xx_isr_status(struct mvs_info *mvi, int irq)
 {
 	void __iomem *regs = mvi->regs;
 	u32 stat;

 	if (!(mvi->flags & MVF_FLAG_SOC)) {
 		stat = mr32(MVS_GBL_INT_STAT);

 		if (stat == 0 || stat == 0xffffffff)
 			return 0;
 	} else
 		stat = 1;
 	return stat;
 }

 static irqreturn_t mvs_64xx_isr(struct mvs_info *mvi, int irq, u32 stat)
 {
 	void __iomem *regs = mvi->regs;

 	/* clear CMD_CMPLT ASAP */
 	mw32_f(MVS_INT_STAT, CINT_DONE);
 #ifndef MVS_USE_TASKLET
 	spin_lock(&mvi->lock);
 #endif
 	mvs_int_full(mvi);
 #ifndef MVS_USE_TASKLET
 	spin_unlock(&mvi->lock);
 #endif
 	return IRQ_HANDLED;
 }

 static void mvs_64xx_command_active(struct mvs_info *mvi, u32 slot_idx)
 {
 	u32 tmp;
 	mvs_cw32(mvi, 0x40 + (slot_idx >> 3), 1 << (slot_idx % 32));
 	mvs_cw32(mvi, 0x00 + (slot_idx >> 3), 1 << (slot_idx % 32));
 	do {
 		tmp = mvs_cr32(mvi, 0x00 + (slot_idx >> 3));
 	} while (tmp & 1 << (slot_idx % 32));
 	do {
 		tmp = mvs_cr32(mvi, 0x40 + (slot_idx >> 3));
 	} while (tmp & 1 << (slot_idx % 32));
 }

 static void mvs_64xx_issue_stop(struct mvs_info *mvi, enum mvs_port_type type,
 				u32 tfs)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp;

 	if (type == PORT_TYPE_SATA) {
 		tmp = mr32(MVS_INT_STAT_SRS_0) | (1U << tfs);
 		mw32(MVS_INT_STAT_SRS_0, tmp);
 	}
 	mw32(MVS_INT_STAT, CINT_CI_STOP);
 	tmp = mr32(MVS_PCS) | 0xFF00;
 	mw32(MVS_PCS, tmp);
 }

 static void mvs_64xx_free_reg_set(struct mvs_info *mvi, u8 *tfs)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp, offs;

 	if (*tfs == MVS_ID_NOT_MAPPED)
 		return;

 	offs = 1U << ((*tfs & 0x0f) + PCS_EN_SATA_REG_SHIFT);
 	if (*tfs < 16) {
 		tmp = mr32(MVS_PCS);
 		mw32(MVS_PCS, tmp & ~offs);
 	} else {
 		tmp = mr32(MVS_CTL);
 		mw32(MVS_CTL, tmp & ~offs);
 	}

 	tmp = mr32(MVS_INT_STAT_SRS_0) & (1U << *tfs);
 	if (tmp)
 		mw32(MVS_INT_STAT_SRS_0, tmp);

 	*tfs = MVS_ID_NOT_MAPPED;
 	return;
 }

 static u8 mvs_64xx_assign_reg_set(struct mvs_info *mvi, u8 *tfs)
 {
 	int i;
 	u32 tmp, offs;
 	void __iomem *regs = mvi->regs;

 	if (*tfs != MVS_ID_NOT_MAPPED)
 		return 0;

 	tmp = mr32(MVS_PCS);

 	for (i = 0; i < mvi->chip->srs_sz; i++) {
 		if (i == 16)
 			tmp = mr32(MVS_CTL);
 		offs = 1U << ((i & 0x0f) + PCS_EN_SATA_REG_SHIFT);
 		if (!(tmp & offs)) {
 			*tfs = i;

 			if (i < 16)
 				mw32(MVS_PCS, tmp | offs);
 			else
 				mw32(MVS_CTL, tmp | offs);
 			tmp = mr32(MVS_INT_STAT_SRS_0) & (1U << i);
 			if (tmp)
 				mw32(MVS_INT_STAT_SRS_0, tmp);
 			return 0;
 		}
 	}
 	return MVS_ID_NOT_MAPPED;
 }

 void mvs_64xx_make_prd(struct scatterlist *scatter, int nr, void *prd)
 {
 	int i;
 	struct scatterlist *sg;
 	struct mvs_prd *buf_prd = prd;
 	for_each_sg(scatter, sg, nr, i) {
 		buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
 		buf_prd->len = cpu_to_le32(sg_dma_len(sg));
 		buf_prd++;
 	}
 }

 static int mvs_64xx_oob_done(struct mvs_info *mvi, int i)
 {
 	u32 phy_st;
 	mvs_write_port_cfg_addr(mvi, i,
 			PHYR_PHY_STAT);
 	phy_st = mvs_read_port_cfg_data(mvi, i);
 	if (phy_st & PHY_OOB_DTCTD)
 		return 1;
 	return 0;
 }

 static void mvs_64xx_fix_phy_info(struct mvs_info *mvi, int i,
 				struct sas_identify_frame *id)

 {
 	struct mvs_phy *phy = &mvi->phy[i];
 	struct asd_sas_phy *sas_phy = &phy->sas_phy;

 	sas_phy->linkrate =
 		(phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
 			PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET;

 	phy->minimum_linkrate =
 		(phy->phy_status &
 			PHY_MIN_SPP_PHYS_LINK_RATE_MASK) >> 8;
 	phy->maximum_linkrate =
 		(phy->phy_status &
 			PHY_MAX_SPP_PHYS_LINK_RATE_MASK) >> 12;

 	mvs_write_port_cfg_addr(mvi, i, PHYR_IDENTIFY);
 	phy->dev_info = mvs_read_port_cfg_data(mvi, i);

 	mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_DEV_INFO);
 	phy->att_dev_info = mvs_read_port_cfg_data(mvi, i);

 	mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_HI);
 	phy->att_dev_sas_addr =
 	     (u64) mvs_read_port_cfg_data(mvi, i) << 32;
 	mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_LO);
 	phy->att_dev_sas_addr |= mvs_read_port_cfg_data(mvi, i);
 	phy->att_dev_sas_addr = SAS_ADDR(&phy->att_dev_sas_addr);
 }

 static void mvs_64xx_phy_work_around(struct mvs_info *mvi, int i)
 {
 	u32 tmp;
 	struct mvs_phy *phy = &mvi->phy[i];
 	/* workaround for HW phy decoding error on 1.5g disk drive */
 	mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE6);
 	tmp = mvs_read_port_vsr_data(mvi, i);
 	if (((phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
 	     PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET) ==
 		SAS_LINK_RATE_1_5_GBPS)
 		tmp &= ~PHY_MODE6_LATECLK;
 	else
 		tmp |= PHY_MODE6_LATECLK;
 	mvs_write_port_vsr_data(mvi, i, tmp);
 }

 void mvs_64xx_phy_set_link_rate(struct mvs_info *mvi, u32 phy_id,
 			struct sas_phy_linkrates *rates)
 {
 	u32 lrmin = 0, lrmax = 0;
 	u32 tmp;

 	tmp = mvs_read_phy_ctl(mvi, phy_id);
 	lrmin = (rates->minimum_linkrate << 8);
 	lrmax = (rates->maximum_linkrate << 12);

 	if (lrmin) {
 		tmp &= ~(0xf << 8);
 		tmp |= lrmin;
 	}
 	if (lrmax) {
 		tmp &= ~(0xf << 12);
 		tmp |= lrmax;
 	}
 	mvs_write_phy_ctl(mvi, phy_id, tmp);
 	mvs_64xx_phy_reset(mvi, phy_id, 1);
 }

 static void mvs_64xx_clear_active_cmds(struct mvs_info *mvi)
 {
 	u32 tmp;
 	void __iomem *regs = mvi->regs;
 	tmp = mr32(MVS_PCS);
 	mw32(MVS_PCS, tmp & 0xFFFF);
 	mw32(MVS_PCS, tmp);
 	tmp = mr32(MVS_CTL);
 	mw32(MVS_CTL, tmp & 0xFFFF);
 	mw32(MVS_CTL, tmp);
 }


 u32 mvs_64xx_spi_read_data(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs_ex;
 	return ior32(SPI_DATA_REG_64XX);
 }

 void mvs_64xx_spi_write_data(struct mvs_info *mvi, u32 data)
 {
 	void __iomem *regs = mvi->regs_ex;
 	 iow32(SPI_DATA_REG_64XX, data);
 }


 int mvs_64xx_spi_buildcmd(struct mvs_info *mvi,
 			u32      *dwCmd,
 			u8       cmd,
 			u8       read,
 			u8       length,
 			u32      addr
 			)
 {
 	u32  dwTmp;

 	dwTmp = ((u32)cmd << 24) | ((u32)length << 19);
 	if (read)
 		dwTmp |= 1U<<23;

 	if (addr != MV_MAX_U32) {
 		dwTmp |= 1U<<22;
 		dwTmp |= (addr & 0x0003FFFF);
 	}

 	*dwCmd = dwTmp;
 	return 0;
 }


 int mvs_64xx_spi_issuecmd(struct mvs_info *mvi, u32 cmd)
 {
 	void __iomem *regs = mvi->regs_ex;
 	int     retry;

 	for (retry = 0; retry < 1; retry++) {
 		iow32(SPI_CTRL_REG_64XX, SPI_CTRL_VENDOR_ENABLE);
 		iow32(SPI_CMD_REG_64XX, cmd);
 		iow32(SPI_CTRL_REG_64XX,
 			SPI_CTRL_VENDOR_ENABLE | SPI_CTRL_SPISTART);
 	}

 	return 0;
 }

 int mvs_64xx_spi_waitdataready(struct mvs_info *mvi, u32 timeout)
 {
 	void __iomem *regs = mvi->regs_ex;
 	u32 i, dwTmp;

 	for (i = 0; i < timeout; i++) {
 		dwTmp = ior32(SPI_CTRL_REG_64XX);
 		if (!(dwTmp & SPI_CTRL_SPISTART))
 			return 0;
 		msleep(10);
 	}

 	return -1;
 }

 #ifndef DISABLE_HOTPLUG_DMA_FIX
 void mvs_64xx_fix_dma(dma_addr_t buf_dma, int buf_len, int from, void *prd)
 {
 	int i;
 	struct mvs_prd *buf_prd = prd;
 	buf_prd	+= from;
 	for (i = 0; i < MAX_SG_ENTRY - from; i++) {
 		buf_prd->addr = cpu_to_le64(buf_dma);
 		buf_prd->len = cpu_to_le32(buf_len);
 		++buf_prd;
 	}
 }
 #endif

 const struct mvs_dispatch mvs_64xx_dispatch = {
 	"mv64xx",
 	mvs_64xx_init,
 	NULL,
 	mvs_64xx_ioremap,
 	mvs_64xx_iounmap,
 	mvs_64xx_isr,
 	mvs_64xx_isr_status,
 	mvs_64xx_interrupt_enable,
 	mvs_64xx_interrupt_disable,
 	mvs_read_phy_ctl,
 	mvs_write_phy_ctl,
 	mvs_read_port_cfg_data,
 	mvs_write_port_cfg_data,
 	mvs_write_port_cfg_addr,
 	mvs_read_port_vsr_data,
 	mvs_write_port_vsr_data,
 	mvs_write_port_vsr_addr,
 	mvs_read_port_irq_stat,
 	mvs_write_port_irq_stat,
 	mvs_read_port_irq_mask,
 	mvs_write_port_irq_mask,
 	mvs_get_sas_addr,
 	mvs_64xx_command_active,
 	mvs_64xx_issue_stop,
 	mvs_start_delivery,
 	mvs_rx_update,
 	mvs_int_full,
 	mvs_64xx_assign_reg_set,
 	mvs_64xx_free_reg_set,
 	mvs_get_prd_size,
 	mvs_get_prd_count,
 	mvs_64xx_make_prd,
 	mvs_64xx_detect_porttype,
 	mvs_64xx_oob_done,
 	mvs_64xx_fix_phy_info,
 	mvs_64xx_phy_work_around,
 	mvs_64xx_phy_set_link_rate,
 	mvs_hw_max_link_rate,
 	mvs_64xx_phy_disable,
 	mvs_64xx_phy_enable,
 	mvs_64xx_phy_reset,
 	mvs_64xx_stp_reset,
 	mvs_64xx_clear_active_cmds,
 	mvs_64xx_spi_read_data,
 	mvs_64xx_spi_write_data,
 	mvs_64xx_spi_buildcmd,
 	mvs_64xx_spi_issuecmd,
 	mvs_64xx_spi_waitdataready,
 #ifndef DISABLE_HOTPLUG_DMA_FIX
 	mvs_64xx_fix_dma,
 #endif
 };
	/*
	* Marvell 88SE64xx hardware specific
	*
	* Copyright 2007 Red Hat, Inc.
	* Copyright 2008 Marvell. <kewei@marvell.com>
	*
	* This file is licensed under GPLv2.
	*
	* 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; version 2 of the
	* License.
	*
	* 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; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	* USA
	*/

	#include "mv_sas.h"
	#include "mv_64xx.h"
	#include "mv_chips.h"

	static void mvs_64xx_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(MVS_GBL_PORT_TYPE);
	phy->phy_type &= ~(PORT_TYPE_SAS \| PORT_TYPE_SATA);
	if (reg & MODE_SAS_SATA & (1 << i))
	phy->phy_type \|= PORT_TYPE_SAS;
	else
	phy->phy_type \|= PORT_TYPE_SATA;
	}

	static void __devinit mvs_64xx_enable_xmt(struct mvs_info *mvi, int phy_id)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp;

	tmp = mr32(MVS_PCS);
	if (mvi->chip->n_phy <= 4)
	tmp \|= 1 << (phy_id + PCS_EN_PORT_XMT_SHIFT);
	else
	tmp \|= 1 << (phy_id + PCS_EN_PORT_XMT_SHIFT2);
	mw32(MVS_PCS, tmp);
	}

	static void __devinit mvs_64xx_phy_hacks(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs;

	mvs_phy_hacks(mvi);

	if (!(mvi->flags & MVF_FLAG_SOC)) {
	/* TEST - for phy decoding error, adjust voltage levels */
	mw32(MVS_P0_VSR_ADDR + 0, 0x8);
	mw32(MVS_P0_VSR_DATA + 0, 0x2F0);

	mw32(MVS_P0_VSR_ADDR + 8, 0x8);
	mw32(MVS_P0_VSR_DATA + 8, 0x2F0);

	mw32(MVS_P0_VSR_ADDR + 16, 0x8);
	mw32(MVS_P0_VSR_DATA + 16, 0x2F0);

	mw32(MVS_P0_VSR_ADDR + 24, 0x8);
	mw32(MVS_P0_VSR_DATA + 24, 0x2F0);
	} else {
	int i;
	/* disable auto port detection */
	mw32(MVS_GBL_PORT_TYPE, 0);
	for (i = 0; i < mvi->chip->n_phy; i++) {
	mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE7);
	mvs_write_port_vsr_data(mvi, i, 0x90000000);
	mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE9);
	mvs_write_port_vsr_data(mvi, i, 0x50f2);
	mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE11);
	mvs_write_port_vsr_data(mvi, i, 0x0e);
	}
	}
	}

	static void mvs_64xx_stp_reset(struct mvs_info *mvi, u32 phy_id)
	{
	void __iomem *regs = mvi->regs;
	u32 reg, tmp;

	if (!(mvi->flags & MVF_FLAG_SOC)) {
	if (phy_id < 4)
	pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &reg);
	else
	pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &reg);

	} else
	reg = mr32(MVS_PHY_CTL);

	tmp = reg;
	if (phy_id < 4)
	tmp \|= (1U << phy_id) << PCTL_LINK_OFFS;
	else
	tmp \|= (1U << (phy_id - 4)) << PCTL_LINK_OFFS;

	if (!(mvi->flags & MVF_FLAG_SOC)) {
	if (phy_id < 4) {
	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);
	mdelay(10);
	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, reg);
	} else {
	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
	mdelay(10);
	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, reg);
	}
	} else {
	mw32(MVS_PHY_CTL, tmp);
	mdelay(10);
	mw32(MVS_PHY_CTL, reg);
	}
	}

	static void mvs_64xx_phy_reset(struct mvs_info *mvi, u32 phy_id, int hard)
	{
	u32 tmp;
	tmp = mvs_read_port_irq_stat(mvi, phy_id);
	tmp &= ~PHYEV_RDY_CH;
	mvs_write_port_irq_stat(mvi, phy_id, tmp);
	tmp = mvs_read_phy_ctl(mvi, phy_id);
	if (hard)
	tmp \|= PHY_RST_HARD;
	else
	tmp \|= PHY_RST;
	mvs_write_phy_ctl(mvi, phy_id, tmp);
	if (hard) {
	do {
	tmp = mvs_read_phy_ctl(mvi, phy_id);
	} while (tmp & PHY_RST_HARD);
	}
	}

	static int __devinit mvs_64xx_chip_reset(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp;
	int i;

	/* make sure interrupts are masked immediately (paranoia) */
	mw32(MVS_GBL_CTL, 0);
	tmp = mr32(MVS_GBL_CTL);

	/* Reset Controller */
	if (!(tmp & HBA_RST)) {
	if (mvi->flags & MVF_PHY_PWR_FIX) {
	pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
	tmp &= ~PCTL_PWR_OFF;
	tmp \|= PCTL_PHY_DSBL;
	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);

	pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
	tmp &= ~PCTL_PWR_OFF;
	tmp \|= PCTL_PHY_DSBL;
	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
	}
	}

	/* make sure interrupts are masked immediately (paranoia) */
	mw32(MVS_GBL_CTL, 0);
	tmp = mr32(MVS_GBL_CTL);

	/* Reset Controller */
	if (!(tmp & HBA_RST)) {
	/* global reset, incl. COMRESET/H_RESET_N (self-clearing) */
	mw32_f(MVS_GBL_CTL, HBA_RST);
	}

	/* wait for reset to finish; timeout is just a guess */
	i = 1000;
	while (i-- > 0) {
	msleep(10);

	if (!(mr32(MVS_GBL_CTL) & HBA_RST))
	break;
	}
	if (mr32(MVS_GBL_CTL) & HBA_RST) {
	dev_printk(KERN_ERR, mvi->dev, "HBA reset failed\n");
	return -EBUSY;
	}
	return 0;
	}

	static void mvs_64xx_phy_disable(struct mvs_info *mvi, u32 phy_id)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp;
	if (!(mvi->flags & MVF_FLAG_SOC)) {
	u32 offs;
	if (phy_id < 4)
	offs = PCR_PHY_CTL;
	else {
	offs = PCR_PHY_CTL2;
	phy_id -= 4;
	}
	pci_read_config_dword(mvi->pdev, offs, &tmp);
	tmp \|= 1U << (PCTL_PHY_DSBL_OFFS + phy_id);
	pci_write_config_dword(mvi->pdev, offs, tmp);
	} else {
	tmp = mr32(MVS_PHY_CTL);
	tmp \|= 1U << (PCTL_PHY_DSBL_OFFS + phy_id);
	mw32(MVS_PHY_CTL, tmp);
	}
	}

	static void mvs_64xx_phy_enable(struct mvs_info *mvi, u32 phy_id)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp;
	if (!(mvi->flags & MVF_FLAG_SOC)) {
	u32 offs;
	if (phy_id < 4)
	offs = PCR_PHY_CTL;
	else {
	offs = PCR_PHY_CTL2;
	phy_id -= 4;
	}
	pci_read_config_dword(mvi->pdev, offs, &tmp);
	tmp &= ~(1U << (PCTL_PHY_DSBL_OFFS + phy_id));
	pci_write_config_dword(mvi->pdev, offs, tmp);
	} else {
	tmp = mr32(MVS_PHY_CTL);
	tmp &= ~(1U << (PCTL_PHY_DSBL_OFFS + phy_id));
	mw32(MVS_PHY_CTL, tmp);
	}
	}

	static int __devinit mvs_64xx_init(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs;
	int i;
	u32 tmp, cctl;

	if (mvi->pdev && mvi->pdev->revision == 0)
	mvi->flags \|= MVF_PHY_PWR_FIX;
	if (!(mvi->flags & MVF_FLAG_SOC)) {
	mvs_show_pcie_usage(mvi);
	tmp = mvs_64xx_chip_reset(mvi);
	if (tmp)
	return tmp;
	} else {
	tmp = mr32(MVS_PHY_CTL);
	tmp &= ~PCTL_PWR_OFF;
	tmp \|= PCTL_PHY_DSBL;
	mw32(MVS_PHY_CTL, tmp);
	}

	/* Init Chip */
	/* make sure RST is set; HBA_RST /should/ have done that for us */
	cctl = mr32(MVS_CTL) & 0xFFFF;
	if (cctl & CCTL_RST)
	cctl &= ~CCTL_RST;
	else
	mw32_f(MVS_CTL, cctl \| CCTL_RST);

	if (!(mvi->flags & MVF_FLAG_SOC)) {
	/* write to device control _AND_ device status register */
	pci_read_config_dword(mvi->pdev, PCR_DEV_CTRL, &tmp);
	tmp &= ~PRD_REQ_MASK;
	tmp \|= PRD_REQ_SIZE;
	pci_write_config_dword(mvi->pdev, PCR_DEV_CTRL, tmp);

	pci_read_config_dword(mvi->pdev, PCR_PHY_CTL, &tmp);
	tmp &= ~PCTL_PWR_OFF;
	tmp &= ~PCTL_PHY_DSBL;
	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL, tmp);

	pci_read_config_dword(mvi->pdev, PCR_PHY_CTL2, &tmp);
	tmp &= PCTL_PWR_OFF;
	tmp &= ~PCTL_PHY_DSBL;
	pci_write_config_dword(mvi->pdev, PCR_PHY_CTL2, tmp);
	} else {
	tmp = mr32(MVS_PHY_CTL);
	tmp &= ~PCTL_PWR_OFF;
	tmp \|= PCTL_COM_ON;
	tmp &= ~PCTL_PHY_DSBL;
	tmp \|= PCTL_LINK_RST;
	mw32(MVS_PHY_CTL, tmp);
	msleep(100);
	tmp &= ~PCTL_LINK_RST;
	mw32(MVS_PHY_CTL, tmp);
	msleep(100);
	}

	/* reset control */
	mw32(MVS_PCS, 0); /* MVS_PCS */
	/* init phys */
	mvs_64xx_phy_hacks(mvi);

	/* enable auto port detection */
	mw32(MVS_GBL_PORT_TYPE, MODE_AUTO_DET_EN);

	mw32(MVS_CMD_LIST_LO, mvi->slot_dma);
	mw32(MVS_CMD_LIST_HI, (mvi->slot_dma >> 16) >> 16);

	mw32(MVS_RX_FIS_LO, mvi->rx_fis_dma);
	mw32(MVS_RX_FIS_HI, (mvi->rx_fis_dma >> 16) >> 16);

	mw32(MVS_TX_CFG, MVS_CHIP_SLOT_SZ);
	mw32(MVS_TX_LO, mvi->tx_dma);
	mw32(MVS_TX_HI, (mvi->tx_dma >> 16) >> 16);

	mw32(MVS_RX_CFG, MVS_RX_RING_SZ);
	mw32(MVS_RX_LO, mvi->rx_dma);
	mw32(MVS_RX_HI, (mvi->rx_dma >> 16) >> 16);

	for (i = 0; i < mvi->chip->n_phy; i++) {
	/* set phy local SAS address */
	/* should set little endian SAS address to 64xx chip */
	mvs_set_sas_addr(mvi, i, PHYR_ADDR_LO, PHYR_ADDR_HI,
	cpu_to_be64(mvi->phy[i].dev_sas_addr));

	mvs_64xx_enable_xmt(mvi, i);

	mvs_64xx_phy_reset(mvi, i, 1);
	msleep(500);
	mvs_64xx_detect_porttype(mvi, i);
	}
	if (mvi->flags & MVF_FLAG_SOC) {
	/* set select registers */
	writel(0x0E008000, regs + 0x000);
	writel(0x59000008, regs + 0x004);
	writel(0x20, regs + 0x008);
	writel(0x20, regs + 0x00c);
	writel(0x20, regs + 0x010);
	writel(0x20, regs + 0x014);
	writel(0x20, regs + 0x018);
	writel(0x20, regs + 0x01c);
	}
	for (i = 0; i < mvi->chip->n_phy; i++) {
	/* clear phy int status */
	tmp = mvs_read_port_irq_stat(mvi, i);
	tmp &= ~PHYEV_SIG_FIS;
	mvs_write_port_irq_stat(mvi, i, tmp);

	/* set phy int mask */
	tmp = PHYEV_RDY_CH \| PHYEV_BROAD_CH \| PHYEV_UNASSOC_FIS \|
	PHYEV_ID_DONE \| PHYEV_DCDR_ERR \| PHYEV_CRC_ERR \|
	PHYEV_DEC_ERR;
	mvs_write_port_irq_mask(mvi, i, tmp);

	msleep(100);
	mvs_update_phyinfo(mvi, i, 1);
	}

	/* FIXME: update wide port bitmaps */

	/* little endian for open address and command table, etc. */
	/*
	* it seems that ( from the spec ) turning on big-endian won't
	* do us any good on big-endian machines, need further confirmation
	*/
	cctl = mr32(MVS_CTL);
	cctl \|= CCTL_ENDIAN_CMD;
	cctl \|= CCTL_ENDIAN_DATA;
	cctl &= ~CCTL_ENDIAN_OPEN;
	cctl \|= CCTL_ENDIAN_RSP;
	mw32_f(MVS_CTL, cctl);

	/* reset CMD queue */
	tmp = mr32(MVS_PCS);
	tmp \|= PCS_CMD_RST;
	mw32(MVS_PCS, tmp);
	/* interrupt coalescing may cause missing HW interrput in some case,
	* and the max count is 0x1ff, while our max slot is 0x200,
	* it will make count 0.
	*/
	tmp = 0;
	mw32(MVS_INT_COAL, tmp);

	tmp = 0x100;
	mw32(MVS_INT_COAL_TMOUT, tmp);

	/* ladies and gentlemen, start your engines */
	mw32(MVS_TX_CFG, 0);
	mw32(MVS_TX_CFG, MVS_CHIP_SLOT_SZ \| TX_EN);
	mw32(MVS_RX_CFG, MVS_RX_RING_SZ \| RX_EN);
	/* enable CMD/CMPL_Q/RESP mode */
	mw32(MVS_PCS, PCS_SATA_RETRY \| PCS_FIS_RX_EN \|
	PCS_CMD_EN \| PCS_CMD_STOP_ERR);

	/* enable completion queue interrupt */
	tmp = (CINT_PORT_MASK \| CINT_DONE \| CINT_MEM \| CINT_SRS \| CINT_CI_STOP \|
	CINT_DMA_PCIE);

	mw32(MVS_INT_MASK, tmp);

	/* Enable SRS interrupt */
	mw32(MVS_INT_MASK_SRS_0, 0xFFFF);

	return 0;
	}

	static int mvs_64xx_ioremap(struct mvs_info *mvi)
	{
	if (!mvs_ioremap(mvi, 4, 2))
	return 0;
	return -1;
	}

	static void mvs_64xx_iounmap(struct mvs_info *mvi)
	{
	mvs_iounmap(mvi->regs);
	mvs_iounmap(mvi->regs_ex);
	}

	static void mvs_64xx_interrupt_enable(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp;

	tmp = mr32(MVS_GBL_CTL);
	mw32(MVS_GBL_CTL, tmp \| INT_EN);
	}

	static void mvs_64xx_interrupt_disable(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp;

	tmp = mr32(MVS_GBL_CTL);
	mw32(MVS_GBL_CTL, tmp & ~INT_EN);
	}

	static u32 mvs_64xx_isr_status(struct mvs_info *mvi, int irq)
	{
	void __iomem *regs = mvi->regs;
	u32 stat;

	if (!(mvi->flags & MVF_FLAG_SOC)) {
	stat = mr32(MVS_GBL_INT_STAT);

	if (stat == 0 \|\| stat == 0xffffffff)
	return 0;
	} else
	stat = 1;
	return stat;
	}

	static irqreturn_t mvs_64xx_isr(struct mvs_info *mvi, int irq, u32 stat)
	{
	void __iomem *regs = mvi->regs;

	/* clear CMD_CMPLT ASAP */
	mw32_f(MVS_INT_STAT, CINT_DONE);
	#ifndef MVS_USE_TASKLET
	spin_lock(&mvi->lock);
	#endif
	mvs_int_full(mvi);
	#ifndef MVS_USE_TASKLET
	spin_unlock(&mvi->lock);
	#endif
	return IRQ_HANDLED;
	}

	static void mvs_64xx_command_active(struct mvs_info *mvi, u32 slot_idx)
	{
	u32 tmp;
	mvs_cw32(mvi, 0x40 + (slot_idx >> 3), 1 << (slot_idx % 32));
	mvs_cw32(mvi, 0x00 + (slot_idx >> 3), 1 << (slot_idx % 32));
	do {
	tmp = mvs_cr32(mvi, 0x00 + (slot_idx >> 3));
	} while (tmp & 1 << (slot_idx % 32));
	do {
	tmp = mvs_cr32(mvi, 0x40 + (slot_idx >> 3));
	} while (tmp & 1 << (slot_idx % 32));
	}

	static void mvs_64xx_issue_stop(struct mvs_info *mvi, enum mvs_port_type type,
	u32 tfs)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp;

	if (type == PORT_TYPE_SATA) {
	tmp = mr32(MVS_INT_STAT_SRS_0) \| (1U << tfs);
	mw32(MVS_INT_STAT_SRS_0, tmp);
	}
	mw32(MVS_INT_STAT, CINT_CI_STOP);
	tmp = mr32(MVS_PCS) \| 0xFF00;
	mw32(MVS_PCS, tmp);
	}

	static void mvs_64xx_free_reg_set(struct mvs_info mvi, u8 tfs)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp, offs;

	if (*tfs == MVS_ID_NOT_MAPPED)
	return;

	offs = 1U << ((*tfs & 0x0f) + PCS_EN_SATA_REG_SHIFT);
	if (*tfs < 16) {
	tmp = mr32(MVS_PCS);
	mw32(MVS_PCS, tmp & ~offs);
	} else {
	tmp = mr32(MVS_CTL);
	mw32(MVS_CTL, tmp & ~offs);
	}

	tmp = mr32(MVS_INT_STAT_SRS_0) & (1U << *tfs);
	if (tmp)
	mw32(MVS_INT_STAT_SRS_0, tmp);

	*tfs = MVS_ID_NOT_MAPPED;
	return;
	}

	static u8 mvs_64xx_assign_reg_set(struct mvs_info mvi, u8 tfs)
	{
	int i;
	u32 tmp, offs;
	void __iomem *regs = mvi->regs;

	if (*tfs != MVS_ID_NOT_MAPPED)
	return 0;

	tmp = mr32(MVS_PCS);

	for (i = 0; i < mvi->chip->srs_sz; i++) {
	if (i == 16)
	tmp = mr32(MVS_CTL);
	offs = 1U << ((i & 0x0f) + PCS_EN_SATA_REG_SHIFT);
	if (!(tmp & offs)) {
	*tfs = i;

	if (i < 16)
	mw32(MVS_PCS, tmp \| offs);
	else
	mw32(MVS_CTL, tmp \| offs);
	tmp = mr32(MVS_INT_STAT_SRS_0) & (1U << i);
	if (tmp)
	mw32(MVS_INT_STAT_SRS_0, tmp);
	return 0;
	}
	}
	return MVS_ID_NOT_MAPPED;
	}

	void mvs_64xx_make_prd(struct scatterlist scatter, int nr, void prd)
	{
	int i;
	struct scatterlist *sg;
	struct mvs_prd *buf_prd = prd;
	for_each_sg(scatter, sg, nr, i) {
	buf_prd->addr = cpu_to_le64(sg_dma_address(sg));
	buf_prd->len = cpu_to_le32(sg_dma_len(sg));
	buf_prd++;
	}
	}

	static int mvs_64xx_oob_done(struct mvs_info *mvi, int i)
	{
	u32 phy_st;
	mvs_write_port_cfg_addr(mvi, i,
	PHYR_PHY_STAT);
	phy_st = mvs_read_port_cfg_data(mvi, i);
	if (phy_st & PHY_OOB_DTCTD)
	return 1;
	return 0;
	}

	static void mvs_64xx_fix_phy_info(struct mvs_info *mvi, int i,
	struct sas_identify_frame *id)

	{
	struct mvs_phy *phy = &mvi->phy[i];
	struct asd_sas_phy *sas_phy = &phy->sas_phy;

	sas_phy->linkrate =
	(phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
	PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET;

	phy->minimum_linkrate =
	(phy->phy_status &
	PHY_MIN_SPP_PHYS_LINK_RATE_MASK) >> 8;
	phy->maximum_linkrate =
	(phy->phy_status &
	PHY_MAX_SPP_PHYS_LINK_RATE_MASK) >> 12;

	mvs_write_port_cfg_addr(mvi, i, PHYR_IDENTIFY);
	phy->dev_info = mvs_read_port_cfg_data(mvi, i);

	mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_DEV_INFO);
	phy->att_dev_info = mvs_read_port_cfg_data(mvi, i);

	mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_HI);
	phy->att_dev_sas_addr =
	(u64) mvs_read_port_cfg_data(mvi, i) << 32;
	mvs_write_port_cfg_addr(mvi, i, PHYR_ATT_ADDR_LO);
	phy->att_dev_sas_addr \|= mvs_read_port_cfg_data(mvi, i);
	phy->att_dev_sas_addr = SAS_ADDR(&phy->att_dev_sas_addr);
	}

	static void mvs_64xx_phy_work_around(struct mvs_info *mvi, int i)
	{
	u32 tmp;
	struct mvs_phy *phy = &mvi->phy[i];
	/* workaround for HW phy decoding error on 1.5g disk drive */
	mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE6);
	tmp = mvs_read_port_vsr_data(mvi, i);
	if (((phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
	PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET) ==
	SAS_LINK_RATE_1_5_GBPS)
	tmp &= ~PHY_MODE6_LATECLK;
	else
	tmp \|= PHY_MODE6_LATECLK;
	mvs_write_port_vsr_data(mvi, i, tmp);
	}

	void mvs_64xx_phy_set_link_rate(struct mvs_info *mvi, u32 phy_id,
	struct sas_phy_linkrates *rates)
	{
	u32 lrmin = 0, lrmax = 0;
	u32 tmp;

	tmp = mvs_read_phy_ctl(mvi, phy_id);
	lrmin = (rates->minimum_linkrate << 8);
	lrmax = (rates->maximum_linkrate << 12);

	if (lrmin) {
	tmp &= ~(0xf << 8);
	tmp \|= lrmin;
	}
	if (lrmax) {
	tmp &= ~(0xf << 12);
	tmp \|= lrmax;
	}
	mvs_write_phy_ctl(mvi, phy_id, tmp);
	mvs_64xx_phy_reset(mvi, phy_id, 1);
	}

	static void mvs_64xx_clear_active_cmds(struct mvs_info *mvi)
	{
	u32 tmp;
	void __iomem *regs = mvi->regs;
	tmp = mr32(MVS_PCS);
	mw32(MVS_PCS, tmp & 0xFFFF);
	mw32(MVS_PCS, tmp);
	tmp = mr32(MVS_CTL);
	mw32(MVS_CTL, tmp & 0xFFFF);
	mw32(MVS_CTL, tmp);
	}


	u32 mvs_64xx_spi_read_data(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs_ex;
	return ior32(SPI_DATA_REG_64XX);
	}

	void mvs_64xx_spi_write_data(struct mvs_info *mvi, u32 data)
	{
	void __iomem *regs = mvi->regs_ex;
	iow32(SPI_DATA_REG_64XX, data);
	}


	int mvs_64xx_spi_buildcmd(struct mvs_info *mvi,
	u32 *dwCmd,
	u8 cmd,
	u8 read,
	u8 length,
	u32 addr
	)
	{
	u32 dwTmp;

	dwTmp = ((u32)cmd << 24) \| ((u32)length << 19);
	if (read)
	dwTmp \|= 1U<<23;

	if (addr != MV_MAX_U32) {
	dwTmp \|= 1U<<22;
	dwTmp \|= (addr & 0x0003FFFF);
	}

	*dwCmd = dwTmp;
	return 0;
	}


	int mvs_64xx_spi_issuecmd(struct mvs_info *mvi, u32 cmd)
	{
	void __iomem *regs = mvi->regs_ex;
	int retry;

	for (retry = 0; retry < 1; retry++) {
	iow32(SPI_CTRL_REG_64XX, SPI_CTRL_VENDOR_ENABLE);
	iow32(SPI_CMD_REG_64XX, cmd);
	iow32(SPI_CTRL_REG_64XX,
	SPI_CTRL_VENDOR_ENABLE \| SPI_CTRL_SPISTART);
	}

	return 0;
	}

	int mvs_64xx_spi_waitdataready(struct mvs_info *mvi, u32 timeout)
	{
	void __iomem *regs = mvi->regs_ex;
	u32 i, dwTmp;

	for (i = 0; i < timeout; i++) {
	dwTmp = ior32(SPI_CTRL_REG_64XX);
	if (!(dwTmp & SPI_CTRL_SPISTART))
	return 0;
	msleep(10);
	}

	return -1;
	}

	#ifndef DISABLE_HOTPLUG_DMA_FIX
	void mvs_64xx_fix_dma(dma_addr_t buf_dma, int buf_len, int from, void *prd)
	{
	int i;
	struct mvs_prd *buf_prd = prd;
	buf_prd += from;
	for (i = 0; i < MAX_SG_ENTRY - from; i++) {
	buf_prd->addr = cpu_to_le64(buf_dma);
	buf_prd->len = cpu_to_le32(buf_len);
	++buf_prd;
	}
	}
	#endif

	const struct mvs_dispatch mvs_64xx_dispatch = {
	"mv64xx",
	mvs_64xx_init,
	NULL,
	mvs_64xx_ioremap,
	mvs_64xx_iounmap,
	mvs_64xx_isr,
	mvs_64xx_isr_status,
	mvs_64xx_interrupt_enable,
	mvs_64xx_interrupt_disable,
	mvs_read_phy_ctl,
	mvs_write_phy_ctl,
	mvs_read_port_cfg_data,
	mvs_write_port_cfg_data,
	mvs_write_port_cfg_addr,
	mvs_read_port_vsr_data,
	mvs_write_port_vsr_data,
	mvs_write_port_vsr_addr,
	mvs_read_port_irq_stat,
	mvs_write_port_irq_stat,
	mvs_read_port_irq_mask,
	mvs_write_port_irq_mask,
	mvs_get_sas_addr,
	mvs_64xx_command_active,
	mvs_64xx_issue_stop,
	mvs_start_delivery,
	mvs_rx_update,
	mvs_int_full,
	mvs_64xx_assign_reg_set,
	mvs_64xx_free_reg_set,
	mvs_get_prd_size,
	mvs_get_prd_count,
	mvs_64xx_make_prd,
	mvs_64xx_detect_porttype,
	mvs_64xx_oob_done,
	mvs_64xx_fix_phy_info,
	mvs_64xx_phy_work_around,
	mvs_64xx_phy_set_link_rate,
	mvs_hw_max_link_rate,
	mvs_64xx_phy_disable,
	mvs_64xx_phy_enable,
	mvs_64xx_phy_reset,
	mvs_64xx_stp_reset,
	mvs_64xx_clear_active_cmds,
	mvs_64xx_spi_read_data,
	mvs_64xx_spi_write_data,
	mvs_64xx_spi_buildcmd,
	mvs_64xx_spi_issuecmd,
	mvs_64xx_spi_waitdataready,
	#ifndef DISABLE_HOTPLUG_DMA_FIX
	mvs_64xx_fix_dma,
	#endif
	};