drivers/scsi/mvsas/mv_94xx.c - kernel/skids - Git at Google

 /*
  * Marvell 88SE94xx 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_94xx.h"
 #include "mv_chips.h"

 static void mvs_94xx_detect_porttype(struct mvs_info *mvi, int i)
 {
 	u32 reg;
 	struct mvs_phy *phy = &mvi->phy[i];
 	u32 phy_status;

 	mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE3);
 	reg = mvs_read_port_vsr_data(mvi, i);
 	phy_status = ((reg & 0x3f0000) >> 16) & 0xff;
 	phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
 	switch (phy_status) {
 	case 0x10:
 		phy->phy_type |= PORT_TYPE_SAS;
 		break;
 	case 0x1d:
 	default:
 		phy->phy_type |= PORT_TYPE_SATA;
 		break;
 	}
 }

 static void __devinit mvs_94xx_enable_xmt(struct mvs_info *mvi, int phy_id)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp;

 	tmp = mr32(MVS_PCS);
 	tmp |= 1 << (phy_id + PCS_EN_PORT_XMT_SHIFT2);
 	mw32(MVS_PCS, tmp);
 }

 static void mvs_94xx_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);
 	if (hard) {
 		tmp = mvs_read_phy_ctl(mvi, phy_id);
 		tmp |= PHY_RST_HARD;
 		mvs_write_phy_ctl(mvi, phy_id, tmp);
 		do {
 			tmp = mvs_read_phy_ctl(mvi, phy_id);
 		} while (tmp & PHY_RST_HARD);
 	} else {
 		mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_STAT);
 		tmp = mvs_read_port_vsr_data(mvi, phy_id);
 		tmp |= PHY_RST;
 		mvs_write_port_vsr_data(mvi, phy_id, tmp);
 	}
 }

 static void mvs_94xx_phy_disable(struct mvs_info *mvi, u32 phy_id)
 {
 	u32 tmp;
 	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_MODE2);
 	tmp = mvs_read_port_vsr_data(mvi, phy_id);
 	mvs_write_port_vsr_data(mvi, phy_id, tmp | 0x00800000);
 }

 static void mvs_94xx_phy_enable(struct mvs_info *mvi, u32 phy_id)
 {
 	mvs_write_port_vsr_addr(mvi, phy_id, 0x1B4);
 	mvs_write_port_vsr_data(mvi, phy_id, 0x8300ffc1);
 	mvs_write_port_vsr_addr(mvi, phy_id, 0x104);
 	mvs_write_port_vsr_data(mvi, phy_id, 0x00018080);
 	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_MODE2);
 	mvs_write_port_vsr_data(mvi, phy_id, 0x00207fff);
 }

 static int __devinit mvs_94xx_init(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs;
 	int i;
 	u32 tmp, cctl;

 	mvs_show_pcie_usage(mvi);
 	if (mvi->flags & MVF_FLAG_SOC) {
 		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) {
 		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 */
 	mw32(MVS_STP_REG_SET_0, 0);
 	mw32(MVS_STP_REG_SET_1, 0);

 	/* init phys */
 	mvs_phy_hacks(mvi);

 	/* disable Multiplexing, enable phy implemented */
 	mw32(MVS_PORTS_IMP, 0xFF);


 	mw32(MVS_PA_VSR_ADDR, 0x00000104);
 	mw32(MVS_PA_VSR_PORT, 0x00018080);
 	mw32(MVS_PA_VSR_ADDR, VSR_PHY_MODE8);
 	mw32(MVS_PA_VSR_PORT, 0x0084ffff);

 	/* set LED blink when IO*/
 	mw32(MVS_PA_VSR_ADDR, 0x00000030);
 	tmp = mr32(MVS_PA_VSR_PORT);
 	tmp &= 0xFFFF00FF;
 	tmp |= 0x00003300;
 	mw32(MVS_PA_VSR_PORT, tmp);

 	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++) {
 		mvs_94xx_phy_disable(mvi, i);
 		/* set phy local SAS address */
 		mvs_set_sas_addr(mvi, i, CONFIG_ID_FRAME3, CONFIG_ID_FRAME4,
 						(mvi->phy[i].dev_sas_addr));

 		mvs_94xx_enable_xmt(mvi, i);
 		mvs_94xx_phy_enable(mvi, i);

 		mvs_94xx_phy_reset(mvi, i, 1);
 		msleep(500);
 		mvs_94xx_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_ID_DONE  | PHYEV_DCDR_ERR | PHYEV_CRC_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_2 | 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);
 	tmp |= CINT_PHY_MASK;
 	mw32(MVS_INT_MASK, tmp);

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

 	return 0;
 }

 static int mvs_94xx_ioremap(struct mvs_info *mvi)
 {
 	if (!mvs_ioremap(mvi, 2, -1)) {
 		mvi->regs_ex = mvi->regs + 0x10200;
 		mvi->regs += 0x20000;
 		if (mvi->id == 1)
 			mvi->regs += 0x4000;
 		return 0;
 	}
 	return -1;
 }

 static void mvs_94xx_iounmap(struct mvs_info *mvi)
 {
 	if (mvi->regs) {
 		mvi->regs -= 0x20000;
 		if (mvi->id == 1)
 			mvi->regs -= 0x4000;
 		mvs_iounmap(mvi->regs);
 	}
 }

 static void mvs_94xx_interrupt_enable(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs_ex;
 	u32 tmp;

 	tmp = mr32(MVS_GBL_CTL);
 	tmp |= (IRQ_SAS_A | IRQ_SAS_B);
 	mw32(MVS_GBL_INT_STAT, tmp);
 	writel(tmp, regs + 0x0C);
 	writel(tmp, regs + 0x10);
 	writel(tmp, regs + 0x14);
 	writel(tmp, regs + 0x18);
 	mw32(MVS_GBL_CTL, tmp);
 }

 static void mvs_94xx_interrupt_disable(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs_ex;
 	u32 tmp;

 	tmp = mr32(MVS_GBL_CTL);

 	tmp &= ~(IRQ_SAS_A | IRQ_SAS_B);
 	mw32(MVS_GBL_INT_STAT, tmp);
 	writel(tmp, regs + 0x0C);
 	writel(tmp, regs + 0x10);
 	writel(tmp, regs + 0x14);
 	writel(tmp, regs + 0x18);
 	mw32(MVS_GBL_CTL, tmp);
 }

 static u32 mvs_94xx_isr_status(struct mvs_info *mvi, int irq)
 {
 	void __iomem *regs = mvi->regs_ex;
 	u32 stat = 0;
 	if (!(mvi->flags & MVF_FLAG_SOC)) {
 		stat = mr32(MVS_GBL_INT_STAT);

 		if (!(stat & (IRQ_SAS_A | IRQ_SAS_B)))
 			return 0;
 	}
 	return stat;
 }

 static irqreturn_t mvs_94xx_isr(struct mvs_info *mvi, int irq, u32 stat)
 {
 	void __iomem *regs = mvi->regs;

 	if (((stat & IRQ_SAS_A) && mvi->id == 0) ||
 			((stat & IRQ_SAS_B) && mvi->id == 1)) {
 		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_94xx_command_active(struct mvs_info *mvi, u32 slot_idx)
 {
 	u32 tmp;
 	mvs_cw32(mvi, 0x300 + (slot_idx >> 3), 1 << (slot_idx % 32));
 	do {
 		tmp = mvs_cr32(mvi, 0x300 + (slot_idx >> 3));
 	} while (tmp & 1 << (slot_idx % 32));
 }

 static void mvs_94xx_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_94xx_free_reg_set(struct mvs_info *mvi, u8 *tfs)
 {
 	void __iomem *regs = mvi->regs;
 	u32 tmp;
 	u8 reg_set = *tfs;

 	if (*tfs == MVS_ID_NOT_MAPPED)
 		return;

 	mvi->sata_reg_set &= ~bit(reg_set);
 	if (reg_set < 32) {
 		w_reg_set_enable(reg_set, (u32)mvi->sata_reg_set);
 		tmp = mr32(MVS_INT_STAT_SRS_0) & (u32)mvi->sata_reg_set;
 		if (tmp)
 			mw32(MVS_INT_STAT_SRS_0, tmp);
 	} else {
 		w_reg_set_enable(reg_set, mvi->sata_reg_set);
 		tmp = mr32(MVS_INT_STAT_SRS_1) & mvi->sata_reg_set;
 		if (tmp)
 			mw32(MVS_INT_STAT_SRS_1, tmp);
 	}

 	*tfs = MVS_ID_NOT_MAPPED;

 	return;
 }

 static u8 mvs_94xx_assign_reg_set(struct mvs_info *mvi, u8 *tfs)
 {
 	int i;
 	void __iomem *regs = mvi->regs;

 	if (*tfs != MVS_ID_NOT_MAPPED)
 		return 0;

 	i = mv_ffc64(mvi->sata_reg_set);
 	if (i > 32) {
 		mvi->sata_reg_set |= bit(i);
 		w_reg_set_enable(i, (u32)(mvi->sata_reg_set >> 32));
 		*tfs = i;
 		return 0;
 	} else if (i >= 0) {
 		mvi->sata_reg_set |= bit(i);
 		w_reg_set_enable(i, (u32)mvi->sata_reg_set);
 		*tfs = i;
 		return 0;
 	}
 	return MVS_ID_NOT_MAPPED;
 }

 static void mvs_94xx_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->im_len.len = cpu_to_le32(sg_dma_len(sg));
 		buf_prd++;
 	}
 }

 static int mvs_94xx_oob_done(struct mvs_info *mvi, int i)
 {
 	u32 phy_st;
 	phy_st = mvs_read_phy_ctl(mvi, i);
 	if (phy_st & PHY_READY_MASK)	/* phy ready */
 		return 1;
 	return 0;
 }

 static void mvs_94xx_get_dev_identify_frame(struct mvs_info *mvi, int port_id,
 					struct sas_identify_frame *id)
 {
 	int i;
 	u32 id_frame[7];

 	for (i = 0; i < 7; i++) {
 		mvs_write_port_cfg_addr(mvi, port_id,
 					CONFIG_ID_FRAME0 + i * 4);
 		id_frame[i] = mvs_read_port_cfg_data(mvi, port_id);
 	}
 	memcpy(id, id_frame, 28);
 }

 static void mvs_94xx_get_att_identify_frame(struct mvs_info *mvi, int port_id,
 					struct sas_identify_frame *id)
 {
 	int i;
 	u32 id_frame[7];

 	/* mvs_hexdump(28, (u8 *)id_frame, 0); */
 	for (i = 0; i < 7; i++) {
 		mvs_write_port_cfg_addr(mvi, port_id,
 					CONFIG_ATT_ID_FRAME0 + i * 4);
 		id_frame[i] = mvs_read_port_cfg_data(mvi, port_id);
 		mv_dprintk("94xx phy %d atta frame %d %x.\n",
 			port_id + mvi->id * mvi->chip->n_phy, i, id_frame[i]);
 	}
 	/* mvs_hexdump(28, (u8 *)id_frame, 0); */
 	memcpy(id, id_frame, 28);
 }

 static u32 mvs_94xx_make_dev_info(struct sas_identify_frame *id)
 {
 	u32 att_dev_info = 0;

 	att_dev_info |= id->dev_type;
 	if (id->stp_iport)
 		att_dev_info |= PORT_DEV_STP_INIT;
 	if (id->smp_iport)
 		att_dev_info |= PORT_DEV_SMP_INIT;
 	if (id->ssp_iport)
 		att_dev_info |= PORT_DEV_SSP_INIT;
 	if (id->stp_tport)
 		att_dev_info |= PORT_DEV_STP_TRGT;
 	if (id->smp_tport)
 		att_dev_info |= PORT_DEV_SMP_TRGT;
 	if (id->ssp_tport)
 		att_dev_info |= PORT_DEV_SSP_TRGT;

 	att_dev_info |= (u32)id->phy_id<<24;
 	return att_dev_info;
 }

 static u32 mvs_94xx_make_att_info(struct sas_identify_frame *id)
 {
 	return mvs_94xx_make_dev_info(id);
 }

 static void mvs_94xx_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;
 	mv_dprintk("get all reg link rate is 0x%x\n", phy->phy_status);
 	sas_phy->linkrate =
 		(phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
 			PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET;
 	sas_phy->linkrate += 0x8;
 	mv_dprintk("get link rate is %d\n", sas_phy->linkrate);
 	phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
 	phy->maximum_linkrate = SAS_LINK_RATE_6_0_GBPS;
 	mvs_94xx_get_dev_identify_frame(mvi, i, id);
 	phy->dev_info = mvs_94xx_make_dev_info(id);

 	if (phy->phy_type & PORT_TYPE_SAS) {
 		mvs_94xx_get_att_identify_frame(mvi, i, id);
 		phy->att_dev_info = mvs_94xx_make_att_info(id);
 		phy->att_dev_sas_addr = *(u64 *)id->sas_addr;
 	} else {
 		phy->att_dev_info = PORT_DEV_STP_TRGT | 1;
 	}

 }

 void mvs_94xx_phy_set_link_rate(struct mvs_info *mvi, u32 phy_id,
 			struct sas_phy_linkrates *rates)
 {
 	/* TODO */
 }

 static void mvs_94xx_clear_active_cmds(struct mvs_info *mvi)
 {
 	u32 tmp;
 	void __iomem *regs = mvi->regs;
 	tmp = mr32(MVS_STP_REG_SET_0);
 	mw32(MVS_STP_REG_SET_0, 0);
 	mw32(MVS_STP_REG_SET_0, tmp);
 	tmp = mr32(MVS_STP_REG_SET_1);
 	mw32(MVS_STP_REG_SET_1, 0);
 	mw32(MVS_STP_REG_SET_1, tmp);
 }


 u32 mvs_94xx_spi_read_data(struct mvs_info *mvi)
 {
 	void __iomem *regs = mvi->regs_ex - 0x10200;
 	return mr32(SPI_RD_DATA_REG_94XX);
 }

 void mvs_94xx_spi_write_data(struct mvs_info *mvi, u32 data)
 {
 	void __iomem *regs = mvi->regs_ex - 0x10200;
 	 mw32(SPI_RD_DATA_REG_94XX, data);
 }


 int mvs_94xx_spi_buildcmd(struct mvs_info *mvi,
 				u32      *dwCmd,
 				u8       cmd,
 				u8       read,
 				u8       length,
 				u32      addr
 				)
 {
 	void __iomem *regs = mvi->regs_ex - 0x10200;
 	u32  dwTmp;

 	dwTmp = ((u32)cmd << 8) | ((u32)length << 4);
 	if (read)
 		dwTmp |= SPI_CTRL_READ_94XX;

 	if (addr != MV_MAX_U32) {
 		mw32(SPI_ADDR_REG_94XX, (addr & 0x0003FFFFL));
 		dwTmp |= SPI_ADDR_VLD_94XX;
 	}

 	*dwCmd = dwTmp;
 	return 0;
 }


 int mvs_94xx_spi_issuecmd(struct mvs_info *mvi, u32 cmd)
 {
 	void __iomem *regs = mvi->regs_ex - 0x10200;
 	mw32(SPI_CTRL_REG_94XX, cmd | SPI_CTRL_SpiStart_94XX);

 	return 0;
 }

 int mvs_94xx_spi_waitdataready(struct mvs_info *mvi, u32 timeout)
 {
 	void __iomem *regs = mvi->regs_ex - 0x10200;
 	u32   i, dwTmp;

 	for (i = 0; i < timeout; i++) {
 		dwTmp = mr32(SPI_CTRL_REG_94XX);
 		if (!(dwTmp & SPI_CTRL_SpiStart_94XX))
 			return 0;
 		msleep(10);
 	}

 	return -1;
 }

 #ifndef DISABLE_HOTPLUG_DMA_FIX
 void mvs_94xx_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->im_len.len = cpu_to_le32(buf_len);
 		++buf_prd;
 	}
 }
 #endif

 /*
  * FIXME JEJB: temporary nop clear_srs_irq to make 94xx still work
  * with 64xx fixes
  */
 static void mvs_94xx_clear_srs_irq(struct mvs_info *mvi, u8 reg_set,
 				   u8 clear_all)
 {
 }

 const struct mvs_dispatch mvs_94xx_dispatch = {
 	"mv94xx",
 	mvs_94xx_init,
 	NULL,
 	mvs_94xx_ioremap,
 	mvs_94xx_iounmap,
 	mvs_94xx_isr,
 	mvs_94xx_isr_status,
 	mvs_94xx_interrupt_enable,
 	mvs_94xx_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_94xx_command_active,
 	mvs_94xx_clear_srs_irq,
 	mvs_94xx_issue_stop,
 	mvs_start_delivery,
 	mvs_rx_update,
 	mvs_int_full,
 	mvs_94xx_assign_reg_set,
 	mvs_94xx_free_reg_set,
 	mvs_get_prd_size,
 	mvs_get_prd_count,
 	mvs_94xx_make_prd,
 	mvs_94xx_detect_porttype,
 	mvs_94xx_oob_done,
 	mvs_94xx_fix_phy_info,
 	NULL,
 	mvs_94xx_phy_set_link_rate,
 	mvs_hw_max_link_rate,
 	mvs_94xx_phy_disable,
 	mvs_94xx_phy_enable,
 	mvs_94xx_phy_reset,
 	NULL,
 	mvs_94xx_clear_active_cmds,
 	mvs_94xx_spi_read_data,
 	mvs_94xx_spi_write_data,
 	mvs_94xx_spi_buildcmd,
 	mvs_94xx_spi_issuecmd,
 	mvs_94xx_spi_waitdataready,
 #ifndef DISABLE_HOTPLUG_DMA_FIX
 	mvs_94xx_fix_dma,
 #endif
 };
	/*
	* Marvell 88SE94xx 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_94xx.h"
	#include "mv_chips.h"

	static void mvs_94xx_detect_porttype(struct mvs_info *mvi, int i)
	{
	u32 reg;
	struct mvs_phy *phy = &mvi->phy[i];
	u32 phy_status;

	mvs_write_port_vsr_addr(mvi, i, VSR_PHY_MODE3);
	reg = mvs_read_port_vsr_data(mvi, i);
	phy_status = ((reg & 0x3f0000) >> 16) & 0xff;
	phy->phy_type &= ~(PORT_TYPE_SAS \| PORT_TYPE_SATA);
	switch (phy_status) {
	case 0x10:
	phy->phy_type \|= PORT_TYPE_SAS;
	break;
	case 0x1d:
	default:
	phy->phy_type \|= PORT_TYPE_SATA;
	break;
	}
	}

	static void __devinit mvs_94xx_enable_xmt(struct mvs_info *mvi, int phy_id)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp;

	tmp = mr32(MVS_PCS);
	tmp \|= 1 << (phy_id + PCS_EN_PORT_XMT_SHIFT2);
	mw32(MVS_PCS, tmp);
	}

	static void mvs_94xx_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);
	if (hard) {
	tmp = mvs_read_phy_ctl(mvi, phy_id);
	tmp \|= PHY_RST_HARD;
	mvs_write_phy_ctl(mvi, phy_id, tmp);
	do {
	tmp = mvs_read_phy_ctl(mvi, phy_id);
	} while (tmp & PHY_RST_HARD);
	} else {
	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_STAT);
	tmp = mvs_read_port_vsr_data(mvi, phy_id);
	tmp \|= PHY_RST;
	mvs_write_port_vsr_data(mvi, phy_id, tmp);
	}
	}

	static void mvs_94xx_phy_disable(struct mvs_info *mvi, u32 phy_id)
	{
	u32 tmp;
	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_MODE2);
	tmp = mvs_read_port_vsr_data(mvi, phy_id);
	mvs_write_port_vsr_data(mvi, phy_id, tmp \| 0x00800000);
	}

	static void mvs_94xx_phy_enable(struct mvs_info *mvi, u32 phy_id)
	{
	mvs_write_port_vsr_addr(mvi, phy_id, 0x1B4);
	mvs_write_port_vsr_data(mvi, phy_id, 0x8300ffc1);
	mvs_write_port_vsr_addr(mvi, phy_id, 0x104);
	mvs_write_port_vsr_data(mvi, phy_id, 0x00018080);
	mvs_write_port_vsr_addr(mvi, phy_id, VSR_PHY_MODE2);
	mvs_write_port_vsr_data(mvi, phy_id, 0x00207fff);
	}

	static int __devinit mvs_94xx_init(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs;
	int i;
	u32 tmp, cctl;

	mvs_show_pcie_usage(mvi);
	if (mvi->flags & MVF_FLAG_SOC) {
	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) {
	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 */
	mw32(MVS_STP_REG_SET_0, 0);
	mw32(MVS_STP_REG_SET_1, 0);

	/* init phys */
	mvs_phy_hacks(mvi);

	/* disable Multiplexing, enable phy implemented */
	mw32(MVS_PORTS_IMP, 0xFF);


	mw32(MVS_PA_VSR_ADDR, 0x00000104);
	mw32(MVS_PA_VSR_PORT, 0x00018080);
	mw32(MVS_PA_VSR_ADDR, VSR_PHY_MODE8);
	mw32(MVS_PA_VSR_PORT, 0x0084ffff);

	/* set LED blink when IO*/
	mw32(MVS_PA_VSR_ADDR, 0x00000030);
	tmp = mr32(MVS_PA_VSR_PORT);
	tmp &= 0xFFFF00FF;
	tmp \|= 0x00003300;
	mw32(MVS_PA_VSR_PORT, tmp);

	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++) {
	mvs_94xx_phy_disable(mvi, i);
	/* set phy local SAS address */
	mvs_set_sas_addr(mvi, i, CONFIG_ID_FRAME3, CONFIG_ID_FRAME4,
	(mvi->phy[i].dev_sas_addr));

	mvs_94xx_enable_xmt(mvi, i);
	mvs_94xx_phy_enable(mvi, i);

	mvs_94xx_phy_reset(mvi, i, 1);
	msleep(500);
	mvs_94xx_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_ID_DONE \| PHYEV_DCDR_ERR \| PHYEV_CRC_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_2 \| 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);
	tmp \|= CINT_PHY_MASK;
	mw32(MVS_INT_MASK, tmp);

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

	return 0;
	}

	static int mvs_94xx_ioremap(struct mvs_info *mvi)
	{
	if (!mvs_ioremap(mvi, 2, -1)) {
	mvi->regs_ex = mvi->regs + 0x10200;
	mvi->regs += 0x20000;
	if (mvi->id == 1)
	mvi->regs += 0x4000;
	return 0;
	}
	return -1;
	}

	static void mvs_94xx_iounmap(struct mvs_info *mvi)
	{
	if (mvi->regs) {
	mvi->regs -= 0x20000;
	if (mvi->id == 1)
	mvi->regs -= 0x4000;
	mvs_iounmap(mvi->regs);
	}
	}

	static void mvs_94xx_interrupt_enable(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs_ex;
	u32 tmp;

	tmp = mr32(MVS_GBL_CTL);
	tmp \|= (IRQ_SAS_A \| IRQ_SAS_B);
	mw32(MVS_GBL_INT_STAT, tmp);
	writel(tmp, regs + 0x0C);
	writel(tmp, regs + 0x10);
	writel(tmp, regs + 0x14);
	writel(tmp, regs + 0x18);
	mw32(MVS_GBL_CTL, tmp);
	}

	static void mvs_94xx_interrupt_disable(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs_ex;
	u32 tmp;

	tmp = mr32(MVS_GBL_CTL);

	tmp &= ~(IRQ_SAS_A \| IRQ_SAS_B);
	mw32(MVS_GBL_INT_STAT, tmp);
	writel(tmp, regs + 0x0C);
	writel(tmp, regs + 0x10);
	writel(tmp, regs + 0x14);
	writel(tmp, regs + 0x18);
	mw32(MVS_GBL_CTL, tmp);
	}

	static u32 mvs_94xx_isr_status(struct mvs_info *mvi, int irq)
	{
	void __iomem *regs = mvi->regs_ex;
	u32 stat = 0;
	if (!(mvi->flags & MVF_FLAG_SOC)) {
	stat = mr32(MVS_GBL_INT_STAT);

	if (!(stat & (IRQ_SAS_A \| IRQ_SAS_B)))
	return 0;
	}
	return stat;
	}

	static irqreturn_t mvs_94xx_isr(struct mvs_info *mvi, int irq, u32 stat)
	{
	void __iomem *regs = mvi->regs;

	if (((stat & IRQ_SAS_A) && mvi->id == 0) \|\|
	((stat & IRQ_SAS_B) && mvi->id == 1)) {
	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_94xx_command_active(struct mvs_info *mvi, u32 slot_idx)
	{
	u32 tmp;
	mvs_cw32(mvi, 0x300 + (slot_idx >> 3), 1 << (slot_idx % 32));
	do {
	tmp = mvs_cr32(mvi, 0x300 + (slot_idx >> 3));
	} while (tmp & 1 << (slot_idx % 32));
	}

	static void mvs_94xx_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_94xx_free_reg_set(struct mvs_info mvi, u8 tfs)
	{
	void __iomem *regs = mvi->regs;
	u32 tmp;
	u8 reg_set = *tfs;

	if (*tfs == MVS_ID_NOT_MAPPED)
	return;

	mvi->sata_reg_set &= ~bit(reg_set);
	if (reg_set < 32) {
	w_reg_set_enable(reg_set, (u32)mvi->sata_reg_set);
	tmp = mr32(MVS_INT_STAT_SRS_0) & (u32)mvi->sata_reg_set;
	if (tmp)
	mw32(MVS_INT_STAT_SRS_0, tmp);
	} else {
	w_reg_set_enable(reg_set, mvi->sata_reg_set);
	tmp = mr32(MVS_INT_STAT_SRS_1) & mvi->sata_reg_set;
	if (tmp)
	mw32(MVS_INT_STAT_SRS_1, tmp);
	}

	*tfs = MVS_ID_NOT_MAPPED;

	return;
	}

	static u8 mvs_94xx_assign_reg_set(struct mvs_info mvi, u8 tfs)
	{
	int i;
	void __iomem *regs = mvi->regs;

	if (*tfs != MVS_ID_NOT_MAPPED)
	return 0;

	i = mv_ffc64(mvi->sata_reg_set);
	if (i > 32) {
	mvi->sata_reg_set \|= bit(i);
	w_reg_set_enable(i, (u32)(mvi->sata_reg_set >> 32));
	*tfs = i;
	return 0;
	} else if (i >= 0) {
	mvi->sata_reg_set \|= bit(i);
	w_reg_set_enable(i, (u32)mvi->sata_reg_set);
	*tfs = i;
	return 0;
	}
	return MVS_ID_NOT_MAPPED;
	}

	static void mvs_94xx_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->im_len.len = cpu_to_le32(sg_dma_len(sg));
	buf_prd++;
	}
	}

	static int mvs_94xx_oob_done(struct mvs_info *mvi, int i)
	{
	u32 phy_st;
	phy_st = mvs_read_phy_ctl(mvi, i);
	if (phy_st & PHY_READY_MASK) /* phy ready */
	return 1;
	return 0;
	}

	static void mvs_94xx_get_dev_identify_frame(struct mvs_info *mvi, int port_id,
	struct sas_identify_frame *id)
	{
	int i;
	u32 id_frame[7];

	for (i = 0; i < 7; i++) {
	mvs_write_port_cfg_addr(mvi, port_id,
	CONFIG_ID_FRAME0 + i * 4);
	id_frame[i] = mvs_read_port_cfg_data(mvi, port_id);
	}
	memcpy(id, id_frame, 28);
	}

	static void mvs_94xx_get_att_identify_frame(struct mvs_info *mvi, int port_id,
	struct sas_identify_frame *id)
	{
	int i;
	u32 id_frame[7];

	/* mvs_hexdump(28, (u8 )id_frame, 0); /
	for (i = 0; i < 7; i++) {
	mvs_write_port_cfg_addr(mvi, port_id,
	CONFIG_ATT_ID_FRAME0 + i * 4);
	id_frame[i] = mvs_read_port_cfg_data(mvi, port_id);
	mv_dprintk("94xx phy %d atta frame %d %x.\n",
	port_id + mvi->id * mvi->chip->n_phy, i, id_frame[i]);
	}
	/* mvs_hexdump(28, (u8 )id_frame, 0); /
	memcpy(id, id_frame, 28);
	}

	static u32 mvs_94xx_make_dev_info(struct sas_identify_frame *id)
	{
	u32 att_dev_info = 0;

	att_dev_info \|= id->dev_type;
	if (id->stp_iport)
	att_dev_info \|= PORT_DEV_STP_INIT;
	if (id->smp_iport)
	att_dev_info \|= PORT_DEV_SMP_INIT;
	if (id->ssp_iport)
	att_dev_info \|= PORT_DEV_SSP_INIT;
	if (id->stp_tport)
	att_dev_info \|= PORT_DEV_STP_TRGT;
	if (id->smp_tport)
	att_dev_info \|= PORT_DEV_SMP_TRGT;
	if (id->ssp_tport)
	att_dev_info \|= PORT_DEV_SSP_TRGT;

	att_dev_info \|= (u32)id->phy_id<<24;
	return att_dev_info;
	}

	static u32 mvs_94xx_make_att_info(struct sas_identify_frame *id)
	{
	return mvs_94xx_make_dev_info(id);
	}

	static void mvs_94xx_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;
	mv_dprintk("get all reg link rate is 0x%x\n", phy->phy_status);
	sas_phy->linkrate =
	(phy->phy_status & PHY_NEG_SPP_PHYS_LINK_RATE_MASK) >>
	PHY_NEG_SPP_PHYS_LINK_RATE_MASK_OFFSET;
	sas_phy->linkrate += 0x8;
	mv_dprintk("get link rate is %d\n", sas_phy->linkrate);
	phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
	phy->maximum_linkrate = SAS_LINK_RATE_6_0_GBPS;
	mvs_94xx_get_dev_identify_frame(mvi, i, id);
	phy->dev_info = mvs_94xx_make_dev_info(id);

	if (phy->phy_type & PORT_TYPE_SAS) {
	mvs_94xx_get_att_identify_frame(mvi, i, id);
	phy->att_dev_info = mvs_94xx_make_att_info(id);
	phy->att_dev_sas_addr = (u64 )id->sas_addr;
	} else {
	phy->att_dev_info = PORT_DEV_STP_TRGT \| 1;
	}

	}

	void mvs_94xx_phy_set_link_rate(struct mvs_info *mvi, u32 phy_id,
	struct sas_phy_linkrates *rates)
	{
	/* TODO */
	}

	static void mvs_94xx_clear_active_cmds(struct mvs_info *mvi)
	{
	u32 tmp;
	void __iomem *regs = mvi->regs;
	tmp = mr32(MVS_STP_REG_SET_0);
	mw32(MVS_STP_REG_SET_0, 0);
	mw32(MVS_STP_REG_SET_0, tmp);
	tmp = mr32(MVS_STP_REG_SET_1);
	mw32(MVS_STP_REG_SET_1, 0);
	mw32(MVS_STP_REG_SET_1, tmp);
	}


	u32 mvs_94xx_spi_read_data(struct mvs_info *mvi)
	{
	void __iomem *regs = mvi->regs_ex - 0x10200;
	return mr32(SPI_RD_DATA_REG_94XX);
	}

	void mvs_94xx_spi_write_data(struct mvs_info *mvi, u32 data)
	{
	void __iomem *regs = mvi->regs_ex - 0x10200;
	mw32(SPI_RD_DATA_REG_94XX, data);
	}


	int mvs_94xx_spi_buildcmd(struct mvs_info *mvi,
	u32 *dwCmd,
	u8 cmd,
	u8 read,
	u8 length,
	u32 addr
	)
	{
	void __iomem *regs = mvi->regs_ex - 0x10200;
	u32 dwTmp;

	dwTmp = ((u32)cmd << 8) \| ((u32)length << 4);
	if (read)
	dwTmp \|= SPI_CTRL_READ_94XX;

	if (addr != MV_MAX_U32) {
	mw32(SPI_ADDR_REG_94XX, (addr & 0x0003FFFFL));
	dwTmp \|= SPI_ADDR_VLD_94XX;
	}

	*dwCmd = dwTmp;
	return 0;
	}


	int mvs_94xx_spi_issuecmd(struct mvs_info *mvi, u32 cmd)
	{
	void __iomem *regs = mvi->regs_ex - 0x10200;
	mw32(SPI_CTRL_REG_94XX, cmd \| SPI_CTRL_SpiStart_94XX);

	return 0;
	}

	int mvs_94xx_spi_waitdataready(struct mvs_info *mvi, u32 timeout)
	{
	void __iomem *regs = mvi->regs_ex - 0x10200;
	u32 i, dwTmp;

	for (i = 0; i < timeout; i++) {
	dwTmp = mr32(SPI_CTRL_REG_94XX);
	if (!(dwTmp & SPI_CTRL_SpiStart_94XX))
	return 0;
	msleep(10);
	}

	return -1;
	}

	#ifndef DISABLE_HOTPLUG_DMA_FIX
	void mvs_94xx_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->im_len.len = cpu_to_le32(buf_len);
	++buf_prd;
	}
	}
	#endif

	/*
	* FIXME JEJB: temporary nop clear_srs_irq to make 94xx still work
	* with 64xx fixes
	*/
	static void mvs_94xx_clear_srs_irq(struct mvs_info *mvi, u8 reg_set,
	u8 clear_all)
	{
	}

	const struct mvs_dispatch mvs_94xx_dispatch = {
	"mv94xx",
	mvs_94xx_init,
	NULL,
	mvs_94xx_ioremap,
	mvs_94xx_iounmap,
	mvs_94xx_isr,
	mvs_94xx_isr_status,
	mvs_94xx_interrupt_enable,
	mvs_94xx_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_94xx_command_active,
	mvs_94xx_clear_srs_irq,
	mvs_94xx_issue_stop,
	mvs_start_delivery,
	mvs_rx_update,
	mvs_int_full,
	mvs_94xx_assign_reg_set,
	mvs_94xx_free_reg_set,
	mvs_get_prd_size,
	mvs_get_prd_count,
	mvs_94xx_make_prd,
	mvs_94xx_detect_porttype,
	mvs_94xx_oob_done,
	mvs_94xx_fix_phy_info,
	NULL,
	mvs_94xx_phy_set_link_rate,
	mvs_hw_max_link_rate,
	mvs_94xx_phy_disable,
	mvs_94xx_phy_enable,
	mvs_94xx_phy_reset,
	NULL,
	mvs_94xx_clear_active_cmds,
	mvs_94xx_spi_read_data,
	mvs_94xx_spi_write_data,
	mvs_94xx_spi_buildcmd,
	mvs_94xx_spi_issuecmd,
	mvs_94xx_spi_waitdataready,
	#ifndef DISABLE_HOTPLUG_DMA_FIX
	mvs_94xx_fix_dma,
	#endif
	};