[U-Boot] [PATCH 1/4] ata: fsl_ahci: Add sata DM support for Freescale powerpc socs

Stefan Roese sr at denx.de
Wed Mar 27 10:00:52 UTC 2019


On 27.03.19 10:23, Peng Ma wrote:
> This patch is to support Freescale sata driver with dts initialized.
> Also resolved the following problems.
> 
> ===================== WARNING ======================
> This board does not use CONFIG_DM_SCSI. Please update
> the storage controller to use CONFIG_DM_SCSI before the v2019.07 release.
> Failure to update by the deadline may result in board removal.
> See doc/driver-model/MIGRATION.txt for more info.
> ====================================================
> 
> Signed-off-by: Peng Ma <peng.ma at nxp.com>
> ---
> depends on:
> 	- https://patchwork.ozlabs.org/project/uboot/list/?series=99168
> 	- https://patchwork.ozlabs.org/project/uboot/list/?series=99167
> 
>   drivers/ata/Kconfig    |   10 +
>   drivers/ata/Makefile   |    1 +
>   drivers/ata/fsl_ahci.c | 1030 ++++++++++++++++++++++++++++++++++++++++
>   drivers/ata/fsl_sata.h |    1 +
>   4 files changed, 1042 insertions(+)
>   create mode 100644 drivers/ata/fsl_ahci.c

Will this patch series replace the old fsl_sata.c driver? If yes,
could you remove this driver as well in this series?

Thanks,
Stefan
  
> diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
> index 49a056e941..efac29c709 100644
> --- a/drivers/ata/Kconfig
> +++ b/drivers/ata/Kconfig
> @@ -59,6 +59,16 @@ config DWC_AHCI
>   	  Enable this driver to support Sata devices through
>   	  Synopsys DWC AHCI module.
>   
> +config FSL_AHCI
> +	bool "Enable Freescale AHCI driver support"
> +	select SCSI_AHCI
> +	depends on AHCI
> +	depends on DM_SCSI
> +	help
> +	  Enable this driver to support Sata devices found in
> +	  some Freescale PowerPC SoCs.
> +
> +
>   config DWC_AHSATA
>   	bool "Enable DWC AHSATA driver support"
>   	select LIBATA
> diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
> index 10bed53bb3..93aabf34c7 100644
> --- a/drivers/ata/Makefile
> +++ b/drivers/ata/Makefile
> @@ -4,6 +4,7 @@
>   # Wolfgang Denk, DENX Software Engineering, wd at denx.de.
>   
>   obj-$(CONFIG_DWC_AHCI) += dwc_ahci.o
> +obj-$(CONFIG_FSL_AHCI) += fsl_ahci.o
>   obj-$(CONFIG_AHCI) += ahci-uclass.o
>   obj-$(CONFIG_AHCI_PCI) += ahci-pci.o
>   obj-$(CONFIG_SCSI_AHCI) += ahci.o
> diff --git a/drivers/ata/fsl_ahci.c b/drivers/ata/fsl_ahci.c
> new file mode 100644
> index 0000000000..16c6f7a335
> --- /dev/null
> +++ b/drivers/ata/fsl_ahci.c
> @@ -0,0 +1,1030 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * NXP PPC SATA platform driver
> + *
> + * (C) Copyright 2019 NXP, Inc.
> + *
> + */
> +#include <common.h>
> +#include <asm/fsl_serdes.h>
> +#include <dm/lists.h>
> +#include <dm.h>
> +#include <ahci.h>
> +#include <scsi.h>
> +#include <libata.h>
> +#include <sata.h>
> +#include <malloc.h>
> +#include <memalign.h>
> +#include <fis.h>
> +
> +#include "fsl_sata.h"
> +
> +struct fsl_ahci_priv {
> +	u32 base;
> +	u32 flag;
> +	u32 number;
> +	fsl_sata_t *fsl_sata;
> +};
> +
> +static int fsl_ahci_bind(struct udevice *dev)
> +{
> +	return device_bind_driver(dev, "fsl_ahci_scsi", "fsl_ahci_scsi", NULL);
> +}
> +
> +static int fsl_ahci_ofdata_to_platdata(struct udevice *dev)
> +{
> +	struct fsl_ahci_priv *priv = dev_get_priv(dev);
> +
> +	priv->number = dev_read_u32_default(dev, "sata-number", -1);
> +	priv->flag = dev_read_u32_default(dev, "sata-fpdma", -1);
> +
> +	priv->base = dev_read_addr(dev);
> +	if (priv->base == FDT_ADDR_T_NONE)
> +		return -EINVAL;
> +
> +	return 0;
> +}
> +
> +static int ata_wait_register(unsigned __iomem *addr, u32 mask,
> +			     u32 val, u32 timeout_msec)
> +{
> +	int i;
> +
> +	for (i = 0; ((in_le32(addr) & mask) != val) && i < timeout_msec; i++)
> +		mdelay(1);
> +
> +	return (i < timeout_msec) ? 0 : -1;
> +}
> +
> +static void fsl_sata_dump_sfis(struct sata_fis_d2h *s)
> +{
> +	printf("Status FIS dump:\n\r");
> +	printf("fis_type:		%02x\n\r", s->fis_type);
> +	printf("pm_port_i:		%02x\n\r", s->pm_port_i);
> +	printf("status:			%02x\n\r", s->status);
> +	printf("error:			%02x\n\r", s->error);
> +	printf("lba_low:		%02x\n\r", s->lba_low);
> +	printf("lba_mid:		%02x\n\r", s->lba_mid);
> +	printf("lba_high:		%02x\n\r", s->lba_high);
> +	printf("device:			%02x\n\r", s->device);
> +	printf("lba_low_exp:		%02x\n\r", s->lba_low_exp);
> +	printf("lba_mid_exp:		%02x\n\r", s->lba_mid_exp);
> +	printf("lba_high_exp:		%02x\n\r", s->lba_high_exp);
> +	printf("res1:			%02x\n\r", s->res1);
> +	printf("sector_count:		%02x\n\r", s->sector_count);
> +	printf("sector_count_exp:	%02x\n\r", s->sector_count_exp);
> +}
> +
> +static void fsl_sata_dump_regs(fsl_sata_reg_t __iomem *reg)
> +{
> +	printf("\n\rSATA:           %08x\n\r", (u32)reg);
> +	printf("CQR:            %08x\n\r", in_le32(&reg->cqr));
> +	printf("CAR:            %08x\n\r", in_le32(&reg->car));
> +	printf("CCR:            %08x\n\r", in_le32(&reg->ccr));
> +	printf("CER:            %08x\n\r", in_le32(&reg->cer));
> +	printf("CQR:            %08x\n\r", in_le32(&reg->cqr));
> +	printf("DER:            %08x\n\r", in_le32(&reg->der));
> +	printf("CHBA:           %08x\n\r", in_le32(&reg->chba));
> +	printf("HStatus:        %08x\n\r", in_le32(&reg->hstatus));
> +	printf("HControl:       %08x\n\r", in_le32(&reg->hcontrol));
> +	printf("CQPMP:          %08x\n\r", in_le32(&reg->cqpmp));
> +	printf("SIG:            %08x\n\r", in_le32(&reg->sig));
> +	printf("ICC:            %08x\n\r", in_le32(&reg->icc));
> +	printf("SStatus:        %08x\n\r", in_le32(&reg->sstatus));
> +	printf("SError:         %08x\n\r", in_le32(&reg->serror));
> +	printf("SControl:       %08x\n\r", in_le32(&reg->scontrol));
> +	printf("SNotification:  %08x\n\r", in_le32(&reg->snotification));
> +	printf("TransCfg:       %08x\n\r", in_le32(&reg->transcfg));
> +	printf("TransStatus:    %08x\n\r", in_le32(&reg->transstatus));
> +	printf("LinkCfg:        %08x\n\r", in_le32(&reg->linkcfg));
> +	printf("LinkCfg1:       %08x\n\r", in_le32(&reg->linkcfg1));
> +	printf("LinkCfg2:       %08x\n\r", in_le32(&reg->linkcfg2));
> +	printf("LinkStatus:     %08x\n\r", in_le32(&reg->linkstatus));
> +	printf("LinkStatus1:    %08x\n\r", in_le32(&reg->linkstatus1));
> +	printf("PhyCtrlCfg:     %08x\n\r", in_le32(&reg->phyctrlcfg));
> +	printf("SYSPR:          %08x\n\r", in_be32(&reg->syspr));
> +}
> +
> +static int init_sata(struct fsl_ahci_priv *priv)
> +{
> +	int i;
> +	u32 cda;
> +	u32 val32;
> +	u32 sig;
> +	fsl_sata_t *sata;
> +	u32 length, align;
> +	cmd_hdr_tbl_t *cmd_hdr;
> +	fsl_sata_reg_t __iomem *reg;
> +
> +	int dev = priv->number;
> +
> +	if (dev < 0 || dev > (CONFIG_SYS_SATA_MAX_DEVICE - 1)) {
> +		printf("the sata index %d is out of ranges\n\r", dev);
> +		return -EINVAL;
> +	}
> +
> +#ifdef CONFIG_MPC85xx
> +	if (dev == 0 && (!is_serdes_configured(SATA1))) {
> +		printf("SATA%d [dev = %d] is not enabled\n", dev + 1, dev);
> +		return -EINVAL;
> +	}
> +	if (dev == 1 && (!is_serdes_configured(SATA2))) {
> +		printf("SATA%d [dev = %d] is not enabled\n", dev + 1, dev);
> +		return -EINVAL;
> +	}
> +#endif
> +
> +	/* Allocate SATA device driver struct */
> +	sata = (fsl_sata_t *)malloc(sizeof(fsl_sata_t));
> +	if (!sata) {
> +		printf("alloc the sata device struct failed\n\r");
> +		return -ENOMEM;
> +	}
> +	/* Zero all of the device driver struct */
> +	memset((void *)sata, 0, sizeof(fsl_sata_t));
> +
> +	sata->dma_flag = priv->flag;
> +	snprintf(sata->name, 12, "SATA%d", dev);
> +
> +	/* Set the controller register base address to device struct */
> +	reg = (fsl_sata_reg_t *)priv->base;
> +	sata->reg_base = reg;
> +
> +	/* Allocate the command header table, 4 bytes aligned */
> +	length = sizeof(struct cmd_hdr_tbl);
> +	align = SATA_HC_CMD_HDR_TBL_ALIGN;
> +	sata->cmd_hdr_tbl_offset = (void *)malloc(length + align);
> +	if (!sata->cmd_hdr_tbl_offset) {
> +		printf("alloc the command header failed\n\r");
> +		return -ENOMEM;
> +	}
> +
> +	cmd_hdr = (cmd_hdr_tbl_t *)(((u32)sata->cmd_hdr_tbl_offset + align)
> +						& ~(align - 1));
> +	sata->cmd_hdr = cmd_hdr;
> +
> +	/* Zero all of the command header table */
> +	memset((void *)sata->cmd_hdr_tbl_offset, 0, length + align);
> +
> +	/* Allocate command descriptor for all command */
> +	length = sizeof(struct cmd_desc) * SATA_HC_MAX_CMD;
> +	align = SATA_HC_CMD_DESC_ALIGN;
> +	sata->cmd_desc_offset = (void *)malloc(length + align);
> +	if (!sata->cmd_desc_offset) {
> +		printf("alloc the command descriptor failed\n\r");
> +		return -ENOMEM;
> +	}
> +	sata->cmd_desc = (cmd_desc_t *)(((u32)sata->cmd_desc_offset + align)
> +						& ~(align - 1));
> +	/* Zero all of command descriptor */
> +	memset((void *)sata->cmd_desc_offset, 0, length + align);
> +
> +	/* Link the command descriptor to command header */
> +	for (i = 0; i < SATA_HC_MAX_CMD; i++) {
> +		cda = ((u32)sata->cmd_desc + SATA_HC_CMD_DESC_SIZE * i)
> +					 & ~(CMD_HDR_CDA_ALIGN - 1);
> +		cmd_hdr->cmd_slot[i].cda = cpu_to_le32(cda);
> +	}
> +
> +	/* To have safe state, force the controller offline */
> +	val32 = in_le32(&reg->hcontrol);
> +	val32 &= ~HCONTROL_ONOFF;
> +	val32 |= HCONTROL_FORCE_OFFLINE;
> +	out_le32(&reg->hcontrol, val32);
> +
> +	/* Wait the controller offline */
> +	ata_wait_register(&reg->hstatus, HSTATUS_ONOFF, 0, 1000);
> +
> +	/* Set the command header base address to CHBA register to tell DMA */
> +	out_le32(&reg->chba, (u32)cmd_hdr & ~0x3);
> +
> +	/* Snoop for the command header */
> +	val32 = in_le32(&reg->hcontrol);
> +	val32 |= HCONTROL_HDR_SNOOP;
> +	out_le32(&reg->hcontrol, val32);
> +
> +	/* Disable all of interrupts */
> +	val32 = in_le32(&reg->hcontrol);
> +	val32 &= ~HCONTROL_INT_EN_ALL;
> +	out_le32(&reg->hcontrol, val32);
> +
> +	/* Clear all of interrupts */
> +	val32 = in_le32(&reg->hstatus);
> +	out_le32(&reg->hstatus, val32);
> +
> +	/* Set the ICC, no interrupt coalescing */
> +	out_le32(&reg->icc, 0x01000000);
> +
> +	/* No PM attatched, the SATA device direct connect */
> +	out_le32(&reg->cqpmp, 0);
> +
> +	/* Clear SError register */
> +	val32 = in_le32(&reg->serror);
> +	out_le32(&reg->serror, val32);
> +
> +	/* Clear CER register */
> +	val32 = in_le32(&reg->cer);
> +	out_le32(&reg->cer, val32);
> +
> +	/* Clear DER register */
> +	val32 = in_le32(&reg->der);
> +	out_le32(&reg->der, val32);
> +
> +	/* No device detection or initialization action requested */
> +	out_le32(&reg->scontrol, 0x00000300);
> +
> +	/* Configure the transport layer, default value */
> +	out_le32(&reg->transcfg, 0x08000016);
> +
> +	/* Configure the link layer, default value */
> +	out_le32(&reg->linkcfg, 0x0000ff34);
> +
> +	/* Bring the controller online */
> +	val32 = in_le32(&reg->hcontrol);
> +	val32 |= HCONTROL_ONOFF;
> +	out_le32(&reg->hcontrol, val32);
> +
> +	mdelay(100);
> +
> +	/* print sata device name */
> +	printf("%s ", sata->name);
> +
> +	/* Wait PHY RDY signal changed for 500ms */
> +	ata_wait_register(&reg->hstatus, HSTATUS_PHY_RDY,
> +			  HSTATUS_PHY_RDY, 500);
> +
> +	/* Check PHYRDY */
> +	val32 = in_le32(&reg->hstatus);
> +	if (val32 & HSTATUS_PHY_RDY) {
> +		sata->link = 1;
> +	} else {
> +		sata->link = 0;
> +		printf("(No RDY)\n\r");
> +		return -EINVAL;
> +	}
> +
> +	/* Wait for signature updated, which is 1st D2H */
> +	ata_wait_register(&reg->hstatus, HSTATUS_SIGNATURE,
> +			  HSTATUS_SIGNATURE, 10000);
> +
> +	if (val32 & HSTATUS_SIGNATURE) {
> +		sig = in_le32(&reg->sig);
> +		debug("Signature updated, the sig =%08x\n\r", sig);
> +		sata->ata_device_type = ata_dev_classify(sig);
> +	}
> +
> +	/* Check the speed */
> +	val32 = in_le32(&reg->sstatus);
> +	if ((val32 & SSTATUS_SPD_MASK) == SSTATUS_SPD_GEN1)
> +		printf("(1.5 Gbps)\n\r");
> +	else if ((val32 & SSTATUS_SPD_MASK) == SSTATUS_SPD_GEN2)
> +		printf("(3 Gbps)\n\r");
> +
> +	priv->fsl_sata = sata;
> +
> +	return 0;
> +}
> +
> +static int fsl_ata_exec_ata_cmd(struct fsl_sata *sata,
> +				struct sata_fis_h2d *cfis,
> +				int is_ncq, int tag,
> +				u8 *buffer, u32 len)
> +{
> +	cmd_hdr_entry_t *cmd_hdr;
> +	cmd_desc_t *cmd_desc;
> +	sata_fis_h2d_t *h2d;
> +	prd_entry_t *prde;
> +	u32 ext_c_ddc;
> +	u32 prde_count;
> +	u32 val32;
> +	u32 ttl;
> +	u32 der;
> +	int i;
> +
> +	fsl_sata_reg_t *reg = sata->reg_base;
> +
> +	/* Check xfer length */
> +	if (len > SATA_HC_MAX_XFER_LEN) {
> +		printf("max transfer length is 64MB\n\r");
> +		return 0;
> +	}
> +
> +	/* Setup the command descriptor */
> +	cmd_desc = sata->cmd_desc + tag;
> +
> +	/* Get the pointer cfis of command descriptor */
> +	h2d = (sata_fis_h2d_t *)cmd_desc->cfis;
> +
> +	/* Zero the cfis of command descriptor */
> +	memset((void *)h2d, 0, SATA_HC_CMD_DESC_CFIS_SIZE);
> +
> +	/* Copy the cfis from user to command descriptor */
> +	h2d->fis_type = cfis->fis_type;
> +	h2d->pm_port_c = cfis->pm_port_c;
> +	h2d->command = cfis->command;
> +
> +	h2d->features = cfis->features;
> +	h2d->features_exp = cfis->features_exp;
> +
> +	h2d->lba_low = cfis->lba_low;
> +	h2d->lba_mid = cfis->lba_mid;
> +	h2d->lba_high = cfis->lba_high;
> +	h2d->lba_low_exp = cfis->lba_low_exp;
> +	h2d->lba_mid_exp = cfis->lba_mid_exp;
> +	h2d->lba_high_exp = cfis->lba_high_exp;
> +
> +	if (!is_ncq) {
> +		h2d->sector_count = cfis->sector_count;
> +		h2d->sector_count_exp = cfis->sector_count_exp;
> +	} else { /* NCQ */
> +		h2d->sector_count = (u8)(tag << 3);
> +	}
> +
> +	h2d->device = cfis->device;
> +	h2d->control = cfis->control;
> +
> +	/* Setup the PRD table */
> +	prde = (prd_entry_t *)cmd_desc->prdt;
> +	memset((void *)prde, 0, sizeof(struct prdt));
> +
> +	prde_count = 0;
> +	ttl = len;
> +	for (i = 0; i < SATA_HC_MAX_PRD_DIRECT; i++) {
> +		if (!len)
> +			break;
> +		prde->dba = cpu_to_le32((u32)buffer & ~0x3);
> +		debug("dba = %08x\n\r", (u32)buffer);
> +
> +		if (len < PRD_ENTRY_MAX_XFER_SZ) {
> +			ext_c_ddc = PRD_ENTRY_DATA_SNOOP | len;
> +			debug("ext_c_ddc1 = %08x, len = %08x\n\r",
> +			      ext_c_ddc, len);
> +			prde->ext_c_ddc = cpu_to_le32(ext_c_ddc);
> +			prde_count++;
> +			prde++;
> +		} else {
> +			ext_c_ddc = PRD_ENTRY_DATA_SNOOP; /* 4M bytes */
> +			debug("ext_c_ddc2 = %08x, len = %08x\n\r",
> +			      ext_c_ddc, len);
> +			prde->ext_c_ddc = cpu_to_le32(ext_c_ddc);
> +			buffer += PRD_ENTRY_MAX_XFER_SZ;
> +			len -= PRD_ENTRY_MAX_XFER_SZ;
> +			prde_count++;
> +			prde++;
> +		}
> +	}
> +
> +	/* Setup the command slot of cmd hdr */
> +	cmd_hdr = (cmd_hdr_entry_t *)&sata->cmd_hdr->cmd_slot[tag];
> +
> +	cmd_hdr->cda = cpu_to_le32((u32)cmd_desc & ~0x3);
> +
> +	val32 = prde_count << CMD_HDR_PRD_ENTRY_SHIFT;
> +	val32 |= sizeof(sata_fis_h2d_t);
> +	cmd_hdr->prde_fis_len = cpu_to_le32(val32);
> +
> +	cmd_hdr->ttl = cpu_to_le32(ttl);
> +
> +	if (!is_ncq)
> +		val32 = CMD_HDR_ATTR_RES | CMD_HDR_ATTR_SNOOP;
> +	else
> +		val32 = CMD_HDR_ATTR_RES | CMD_HDR_ATTR_SNOOP |
> +			CMD_HDR_ATTR_FPDMA;
> +
> +	tag &= CMD_HDR_ATTR_TAG;
> +	val32 |= tag;
> +
> +	debug("attribute = %08x\n\r", val32);
> +	cmd_hdr->attribute = cpu_to_le32(val32);
> +
> +	/* Make sure cmd desc and cmd slot valid before command issue */
> +	sync();
> +
> +	/* PMP*/
> +	val32 = (u32)(h2d->pm_port_c & 0x0f);
> +	out_le32(&reg->cqpmp, val32);
> +
> +	/* Wait no active */
> +	if (ata_wait_register(&reg->car, (1 << tag), 0, 10000))
> +		printf("Wait no active time out\n\r");
> +
> +	/* Issue command */
> +	if (!(in_le32(&reg->cqr) & (1 << tag))) {
> +		val32 = 1 << tag;
> +		out_le32(&reg->cqr, val32);
> +	}
> +
> +	/* Wait command completed for 10s */
> +	if (ata_wait_register(&reg->ccr, (1 << tag), (1 << tag), 10000)) {
> +		if (!is_ncq)
> +			printf("Non-NCQ command time out\n\r");
> +		else
> +			printf("NCQ command time out\n\r");
> +	}
> +
> +	val32 = in_le32(&reg->cer);
> +
> +	if (val32) {
> +		fsl_sata_dump_sfis((struct sata_fis_d2h *)cmd_desc->sfis);
> +		printf("CE at device\n\r");
> +		fsl_sata_dump_regs(reg);
> +		der = in_le32(&reg->der);
> +		out_le32(&reg->cer, val32);
> +		out_le32(&reg->der, der);
> +	}
> +
> +	/* Clear complete flags */
> +	val32 = in_le32(&reg->ccr);
> +	out_le32(&reg->ccr, val32);
> +
> +	return len;
> +}
> +
> +static int fsl_sata_exec_cmd(struct fsl_sata *sata, struct sata_fis_h2d *cfis,
> +			     enum cmd_type command_type, int tag, u8 *buffer,
> +			     u32 len)
> +{
> +	int rc;
> +
> +	if (tag > SATA_HC_MAX_CMD || tag < 0) {
> +		printf("tag is out of range, tag=%d\n\r", tag);
> +		return -1;
> +	}
> +
> +	switch (command_type) {
> +	case CMD_ATA:
> +		rc = fsl_ata_exec_ata_cmd(sata, cfis, 0, tag, buffer, len);
> +		return rc;
> +	case CMD_NCQ:
> +		rc = fsl_ata_exec_ata_cmd(sata, cfis, 1, tag, buffer, len);
> +		return rc;
> +	case CMD_ATAPI:
> +	case CMD_VENDOR_BIST:
> +	case CMD_BIST:
> +		printf("not support now\n\r");
> +		return -1;
> +	default:
> +		break;
> +	}
> +
> +	return -1;
> +}
> +
> +static void fsl_sata_identify(fsl_sata_t *sata, u16 *id)
> +{
> +	struct sata_fis_h2d h2d, *cfis = &h2d;
> +
> +	memset(cfis, 0, sizeof(struct sata_fis_h2d));
> +
> +	cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
> +	cfis->pm_port_c = 0x80; /* is command */
> +	cfis->command = ATA_CMD_ID_ATA;
> +
> +	fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, (u8 *)id, ATA_ID_WORDS * 2);
> +	ata_swap_buf_le16(id, ATA_ID_WORDS);
> +}
> +
> +static void fsl_sata_xfer_mode(fsl_sata_t *sata, u16 *id)
> +{
> +	sata->pio = id[ATA_ID_PIO_MODES];
> +	sata->mwdma = id[ATA_ID_MWDMA_MODES];
> +	sata->udma = id[ATA_ID_UDMA_MODES];
> +	debug("pio %04x, mwdma %04x, udma %04x\n\r", sata->pio,
> +	      sata->mwdma, sata->udma);
> +}
> +
> +static void fsl_sata_init_wcache(fsl_sata_t *sata, u16 *id)
> +{
> +	if (ata_id_has_wcache(id) && ata_id_wcache_enabled(id))
> +		sata->wcache = 1;
> +	if (ata_id_has_flush(id))
> +		sata->flush = 1;
> +	if (ata_id_has_flush_ext(id))
> +		sata->flush_ext = 1;
> +}
> +
> +static void fsl_sata_set_features(fsl_sata_t *sata)
> +{
> +	struct sata_fis_h2d h2d, *cfis = &h2d;
> +	u8 udma_cap;
> +
> +	memset(cfis, 0, sizeof(struct sata_fis_h2d));
> +
> +	cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
> +	cfis->pm_port_c = 0x80; /* is command */
> +	cfis->command = ATA_CMD_SET_FEATURES;
> +	cfis->features = SETFEATURES_XFER;
> +
> +	/* First check the device capablity */
> +	udma_cap = (u8)(sata->udma & 0xff);
> +	debug("udma_cap %02x\n\r", udma_cap);
> +
> +	if (udma_cap == ATA_UDMA6)
> +		cfis->sector_count = XFER_UDMA_6;
> +	if (udma_cap == ATA_UDMA5)
> +		cfis->sector_count = XFER_UDMA_5;
> +	if (udma_cap == ATA_UDMA4)
> +		cfis->sector_count = XFER_UDMA_4;
> +	if (udma_cap == ATA_UDMA3)
> +		cfis->sector_count = XFER_UDMA_3;
> +
> +	fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, NULL, 0);
> +}
> +
> +static u32 fsl_sata_rw_cmd(fsl_sata_t *sata, u32 start, u32 blkcnt,
> +			   u8 *buffer, int is_write)
> +{
> +	struct sata_fis_h2d h2d, *cfis = &h2d;
> +	u32 block;
> +
> +	block = start;
> +
> +	memset(cfis, 0, sizeof(struct sata_fis_h2d));
> +
> +	cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
> +	cfis->pm_port_c = 0x80; /* is command */
> +	cfis->command = (is_write) ? ATA_CMD_WRITE : ATA_CMD_READ;
> +	cfis->device = ATA_LBA;
> +
> +	cfis->device |= (block >> 24) & 0xf;
> +	cfis->lba_high = (block >> 16) & 0xff;
> +	cfis->lba_mid = (block >> 8) & 0xff;
> +	cfis->lba_low = block & 0xff;
> +	cfis->sector_count = (u8)(blkcnt & 0xff);
> +
> +	fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, buffer,
> +			  ATA_SECT_SIZE * blkcnt);
> +	return blkcnt;
> +}
> +
> +static void fsl_sata_flush_cache(fsl_sata_t *sata)
> +{
> +	struct sata_fis_h2d h2d, *cfis = &h2d;
> +
> +	memset(cfis, 0, sizeof(struct sata_fis_h2d));
> +
> +	cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
> +	cfis->pm_port_c = 0x80; /* is command */
> +	cfis->command = ATA_CMD_FLUSH;
> +
> +	fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, NULL, 0);
> +}
> +
> +static u32 fsl_sata_rw_cmd_ext(fsl_sata_t *sata, u32 start,
> +			       u32 blkcnt, u8 *buffer, int is_write)
> +{
> +	struct sata_fis_h2d h2d, *cfis = &h2d;
> +	u64 block;
> +
> +	block = (u64)start;
> +
> +	memset(cfis, 0, sizeof(struct sata_fis_h2d));
> +
> +	cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
> +	cfis->pm_port_c = 0x80; /* is command */
> +
> +	cfis->command = (is_write) ? ATA_CMD_WRITE_EXT
> +				 : ATA_CMD_READ_EXT;
> +
> +	cfis->lba_high_exp = (block >> 40) & 0xff;
> +	cfis->lba_mid_exp = (block >> 32) & 0xff;
> +	cfis->lba_low_exp = (block >> 24) & 0xff;
> +	cfis->lba_high = (block >> 16) & 0xff;
> +	cfis->lba_mid = (block >> 8) & 0xff;
> +	cfis->lba_low = block & 0xff;
> +	cfis->device = ATA_LBA;
> +	cfis->sector_count_exp = (blkcnt >> 8) & 0xff;
> +	cfis->sector_count = blkcnt & 0xff;
> +
> +	fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, buffer,
> +			  ATA_SECT_SIZE * blkcnt);
> +	return blkcnt;
> +}
> +
> +static u32 fsl_sata_rw_ncq_cmd(fsl_sata_t *sata, u32 start, u32 blkcnt,
> +			       u8 *buffer,
> +			       int is_write)
> +{
> +	struct sata_fis_h2d h2d, *cfis = &h2d;
> +	int ncq_channel;
> +	u64 block;
> +
> +	if (sata->lba48 != 1) {
> +		printf("execute FPDMA command on non-LBA48 hard disk\n\r");
> +		return -1;
> +	}
> +
> +	block = (u64)start;
> +
> +	memset(cfis, 0, sizeof(struct sata_fis_h2d));
> +
> +	cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
> +	cfis->pm_port_c = 0x80; /* is command */
> +
> +	cfis->command = (is_write) ? ATA_CMD_FPDMA_WRITE
> +				 : ATA_CMD_FPDMA_READ;
> +
> +	cfis->lba_high_exp = (block >> 40) & 0xff;
> +	cfis->lba_mid_exp = (block >> 32) & 0xff;
> +	cfis->lba_low_exp = (block >> 24) & 0xff;
> +	cfis->lba_high = (block >> 16) & 0xff;
> +	cfis->lba_mid = (block >> 8) & 0xff;
> +	cfis->lba_low = block & 0xff;
> +
> +	cfis->device = ATA_LBA;
> +	cfis->features_exp = (blkcnt >> 8) & 0xff;
> +	cfis->features = blkcnt & 0xff;
> +
> +	if (sata->queue_depth >= SATA_HC_MAX_CMD)
> +		ncq_channel = SATA_HC_MAX_CMD - 1;
> +	else
> +		ncq_channel = sata->queue_depth - 1;
> +
> +	/* Use the latest queue */
> +	fsl_sata_exec_cmd(sata, cfis, CMD_NCQ, ncq_channel, buffer,
> +			  ATA_SECT_SIZE * blkcnt);
> +	return blkcnt;
> +}
> +
> +static void fsl_sata_flush_cache_ext(fsl_sata_t *sata)
> +{
> +	struct sata_fis_h2d h2d, *cfis = &h2d;
> +
> +	memset(cfis, 0, sizeof(struct sata_fis_h2d));
> +
> +	cfis->fis_type = SATA_FIS_TYPE_REGISTER_H2D;
> +	cfis->pm_port_c = 0x80; /* is command */
> +	cfis->command = ATA_CMD_FLUSH_EXT;
> +
> +	fsl_sata_exec_cmd(sata, cfis, CMD_ATA, 0, NULL, 0);
> +}
> +
> +static u32 ata_low_level_rw_lba48(fsl_sata_t *sata, u32 blknr, lbaint_t blkcnt,
> +				  const void *buffer, int is_write)
> +{
> +	u32 start, blks;
> +	u8 *addr;
> +	int max_blks;
> +
> +	start = blknr;
> +	blks = blkcnt;
> +	addr = (u8 *)buffer;
> +
> +	max_blks = ATA_MAX_SECTORS_LBA48;
> +	do {
> +		if (blks > max_blks) {
> +			if (sata->dma_flag != FLAGS_FPDMA)
> +				fsl_sata_rw_cmd_ext(sata, start, max_blks,
> +						    addr, is_write);
> +			else
> +				fsl_sata_rw_ncq_cmd(sata, start, max_blks,
> +						    addr, is_write);
> +			start += max_blks;
> +			blks -= max_blks;
> +			addr += ATA_SECT_SIZE * max_blks;
> +		} else {
> +			if (sata->dma_flag != FLAGS_FPDMA)
> +				fsl_sata_rw_cmd_ext(sata, start, blks,
> +						    addr, is_write);
> +			else
> +				fsl_sata_rw_ncq_cmd(sata, start, blks,
> +						    addr, is_write);
> +			start += blks;
> +			blks = 0;
> +			addr += ATA_SECT_SIZE * blks;
> +		}
> +	} while (blks != 0);
> +
> +	return blks;
> +}
> +
> +static u32 ata_low_level_rw_lba28(fsl_sata_t *sata, u32 blknr, u32 blkcnt,
> +				  const void *buffer, int is_write)
> +{
> +	u32 start, blks;
> +	u8 *addr;
> +	int max_blks;
> +
> +	start = blknr;
> +	blks = blkcnt;
> +	addr = (u8 *)buffer;
> +
> +	max_blks = ATA_MAX_SECTORS;
> +	do {
> +		if (blks > max_blks) {
> +			fsl_sata_rw_cmd(sata, start, max_blks, addr, is_write);
> +			start += max_blks;
> +			blks -= max_blks;
> +			addr += ATA_SECT_SIZE * max_blks;
> +		} else {
> +			fsl_sata_rw_cmd(sata, start, blks, addr, is_write);
> +			start += blks;
> +			blks = 0;
> +			addr += ATA_SECT_SIZE * blks;
> +		}
> +	} while (blks != 0);
> +
> +	return blks;
> +}
> +
> +/*
> + * SATA interface between low level driver and command layer
> + */
> +static int sata_read(fsl_sata_t *sata, ulong blknr, lbaint_t blkcnt,
> +		     void *buffer)
> +{
> +	u32 rc;
> +
> +	if (sata->lba48)
> +		rc = ata_low_level_rw_lba48(sata, blknr, blkcnt, buffer,
> +					    READ_CMD);
> +	else
> +		rc = ata_low_level_rw_lba28(sata, blknr, blkcnt, buffer,
> +					    READ_CMD);
> +	return rc;
> +}
> +
> +static int sata_write(fsl_sata_t *sata, ulong blknr, lbaint_t blkcnt,
> +		      const void *buffer)
> +{
> +	u32 rc;
> +
> +	if (sata->lba48) {
> +		rc = ata_low_level_rw_lba48(sata, blknr, blkcnt, buffer,
> +					    WRITE_CMD);
> +		if (sata->wcache && sata->flush_ext)
> +			fsl_sata_flush_cache_ext(sata);
> +	} else {
> +		rc = ata_low_level_rw_lba28(sata, blknr, blkcnt, buffer,
> +					    WRITE_CMD);
> +		if (sata->wcache && sata->flush)
> +			fsl_sata_flush_cache(sata);
> +	}
> +
> +	return rc;
> +}
> +
> +int sata_getinfo(fsl_sata_t *sata, u16 *id)
> +{
> +	/* if no detected link */
> +	if (!sata->link)
> +		return -EINVAL;
> +
> +#ifdef CONFIG_LBA48
> +	/* Check if support LBA48 */
> +	if (ata_id_has_lba48(id)) {
> +		sata->lba48 = 1;
> +		debug("Device support LBA48\n\r");
> +	} else {
> +		debug("Device supports LBA28\n\r");
> +	}
> +#endif
> +
> +	/* Get the NCQ queue depth from device */
> +	sata->queue_depth = ata_id_queue_depth(id);
> +
> +	/* Get the xfer mode from device */
> +	fsl_sata_xfer_mode(sata, id);
> +
> +	/* Get the write cache status from device */
> +	fsl_sata_init_wcache(sata, id);
> +
> +	/* Set the xfer mode to highest speed */
> +	fsl_sata_set_features(sata);
> +
> +	return 0;
> +}
> +
> +static int fsl_scsi_exec(fsl_sata_t *sata, struct scsi_cmd *pccb,
> +			 bool is_write)
> +{
> +	int ret;
> +	u32 temp;
> +	u16 blocks = 0;
> +	lbaint_t start = 0;
> +	u8 *buffer = pccb->pdata;
> +
> +	/* Retrieve the base LBA number from the ccb structure. */
> +	if (pccb->cmd[0] == SCSI_READ16) {
> +		memcpy(&start, pccb->cmd + 2, 8);
> +		start = be64_to_cpu(start);
> +	} else {
> +		memcpy(&temp, pccb->cmd + 2, 4);
> +		start = be32_to_cpu(temp);
> +	}
> +
> +	if (pccb->cmd[0] == SCSI_READ16)
> +		blocks = (((u16)pccb->cmd[13]) << 8) | ((u16)pccb->cmd[14]);
> +	else
> +		blocks = (((u16)pccb->cmd[7]) << 8) | ((u16)pccb->cmd[8]);
> +
> +	debug("scsi_ahci: %s %u blocks starting from lba 0x" LBAFU "\n",
> +	      is_write ?  "write" : "read", blocks, start);
> +
> +	if (is_write)
> +		ret = sata_write(sata, start, blocks, buffer);
> +	else
> +		ret = sata_read(sata, start, blocks, buffer);
> +
> +	return ret;
> +}
> +
> +static char *fsl_ata_id_strcpy(u16 *target, u16 *src, int len)
> +{
> +	int i;
> +
> +	for (i = 0; i < len / 2; i++)
> +		target[i] = src[i];
> +
> +	return (char *)target;
> +}
> +
> +static int fsl_ata_scsiop_inquiry(struct ahci_uc_priv *uc_priv,
> +				  struct scsi_cmd *pccb,
> +				  fsl_sata_t *sata)
> +{
> +	u8 port;
> +	u16 *idbuf;
> +
> +	ALLOC_CACHE_ALIGN_BUFFER(u16, tmpid, ATA_ID_WORDS);
> +
> +	/* Clean ccb data buffer */
> +	memset(pccb->pdata, 0, pccb->datalen);
> +
> +	if (pccb->datalen <= 35)
> +		return 0;
> +
> +	/* Read id from sata */
> +	port = pccb->target;
> +
> +	fsl_sata_identify(sata, (u16 *)tmpid);
> +
> +	if (!uc_priv->ataid[port]) {
> +		uc_priv->ataid[port] = malloc(ATA_ID_WORDS * 2);
> +		if (!uc_priv->ataid[port]) {
> +			printf("%s: No memory for ataid[port]\n", __func__);
> +			return -ENOMEM;
> +		}
> +	}
> +
> +	idbuf = uc_priv->ataid[port];
> +
> +	memcpy(idbuf, tmpid, ATA_ID_WORDS * 2);
> +
> +	memcpy(&pccb->pdata[8], "ATA     ", 8);
> +	fsl_ata_id_strcpy((u16 *)&pccb->pdata[16], &idbuf[ATA_ID_PROD], 16);
> +	fsl_ata_id_strcpy((u16 *)&pccb->pdata[32], &idbuf[ATA_ID_FW_REV], 4);
> +
> +	sata_getinfo(sata, (u16 *)idbuf);
> +#ifdef DEBUG
> +	ata_dump_id(idbuf);
> +#endif
> +	return 0;
> +}
> +
> +/*
> + * SCSI READ CAPACITY10 command operation.
> + */
> +static int fsl_ata_scsiop_read_capacity10(struct ahci_uc_priv *uc_priv,
> +					  struct scsi_cmd *pccb)
> +{
> +	u32 cap;
> +	u64 cap64;
> +	u32 block_size;
> +
> +	if (!uc_priv->ataid[pccb->target]) {
> +		printf("scsi_ahci: SCSI READ CAPACITY10 command failure."
> +		       "\tNo ATA info!\n"
> +		       "\tPlease run SCSI command INQUIRY first!\n");
> +		return -EPERM;
> +	}
> +
> +	cap64 = ata_id_n_sectors(uc_priv->ataid[pccb->target]);
> +	if (cap64 > 0x100000000ULL)
> +		cap64 = 0xffffffff;
> +
> +	cap = cpu_to_be32(cap64);
> +	memcpy(pccb->pdata, &cap, sizeof(cap));
> +
> +	block_size = cpu_to_be32((u32)512);
> +	memcpy(&pccb->pdata[4], &block_size, 4);
> +
> +	return 0;
> +}
> +
> +/*
> + * SCSI READ CAPACITY16 command operation.
> + */
> +static int fsl_ata_scsiop_read_capacity16(struct ahci_uc_priv *uc_priv,
> +					  struct scsi_cmd *pccb)
> +{
> +	u64 cap;
> +	u64 block_size;
> +
> +	if (!uc_priv->ataid[pccb->target]) {
> +		printf("scsi_ahci: SCSI READ CAPACITY16 command failure."
> +		       "\tNo ATA info!\n"
> +		       "\tPlease run SCSI command INQUIRY first!\n");
> +		return -EPERM;
> +	}
> +
> +	cap = ata_id_n_sectors(uc_priv->ataid[pccb->target]);
> +	cap = cpu_to_be64(cap);
> +	memcpy(pccb->pdata, &cap, sizeof(cap));
> +
> +	block_size = cpu_to_be64((u64)512);
> +	memcpy(&pccb->pdata[8], &block_size, 8);
> +
> +	return 0;
> +}
> +
> +/*
> + * SCSI TEST UNIT READY command operation.
> + */
> +static int fsl_ata_scsiop_test_unit_ready(struct ahci_uc_priv *uc_priv,
> +					  struct scsi_cmd *pccb)
> +{
> +	return (uc_priv->ataid[pccb->target]) ? 0 : -EPERM;
> +}
> +
> +static int fsl_ahci_scsi_exec(struct udevice *dev, struct scsi_cmd *pccb)
> +{
> +	struct ahci_uc_priv *uc_priv = dev_get_uclass_priv(dev->parent);
> +	struct fsl_ahci_priv *priv = dev_get_priv(dev->parent);
> +	fsl_sata_t *sata = priv->fsl_sata;
> +	int ret;
> +
> +	switch (pccb->cmd[0]) {
> +	case SCSI_READ16:
> +	case SCSI_READ10:
> +		ret = fsl_scsi_exec(sata, pccb, 0);
> +		break;
> +	case SCSI_WRITE10:
> +		ret = fsl_scsi_exec(sata, pccb, 1);
> +		break;
> +	case SCSI_RD_CAPAC10:
> +		ret = fsl_ata_scsiop_read_capacity10(uc_priv, pccb);
> +		break;
> +	case SCSI_RD_CAPAC16:
> +		ret = fsl_ata_scsiop_read_capacity16(uc_priv, pccb);
> +		break;
> +	case SCSI_TST_U_RDY:
> +		ret = fsl_ata_scsiop_test_unit_ready(uc_priv, pccb);
> +		break;
> +	case SCSI_INQUIRY:
> +		ret = fsl_ata_scsiop_inquiry(uc_priv, pccb, sata);
> +		break;
> +	default:
> +		printf("Unsupport SCSI command 0x%02x\n", pccb->cmd[0]);
> +		return -ENOTSUPP;
> +	}
> +
> +	if (ret) {
> +		debug("SCSI command 0x%02x ret errno %d\n", pccb->cmd[0], ret);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static int fsl_ahci_probe(struct udevice *dev)
> +{
> +	struct fsl_ahci_priv *priv = dev_get_priv(dev);
> +	struct udevice *child_dev;
> +	struct scsi_platdata *uc_plat;
> +
> +	device_find_first_child(dev, &child_dev);
> +	if (!child_dev)
> +		return -ENODEV;
> +	uc_plat = dev_get_uclass_platdata(child_dev);
> +	uc_plat->base = priv->base;
> +	uc_plat->max_lun = 1;
> +	uc_plat->max_id = 1;
> +
> +	return init_sata(priv);
> +}
> +
> +struct scsi_ops fsl_scsi_ops = {
> +	.exec		= fsl_ahci_scsi_exec,
> +};
> +
> +static const struct udevice_id fsl_ahci_ids[] = {
> +	{ .compatible = "fsl,pq-sata-v2" },
> +	{ }
> +};
> +
> +U_BOOT_DRIVER(fsl_ahci_scsi) = {
> +	.name		= "fsl_ahci_scsi",
> +	.id		= UCLASS_SCSI,
> +	.ops		= &fsl_scsi_ops,
> +};
> +
> +U_BOOT_DRIVER(fsl_ahci) = {
> +	.name	= "fsl_ahci",
> +	.id	= UCLASS_AHCI,
> +	.of_match = fsl_ahci_ids,
> +	.bind	= fsl_ahci_bind,
> +	.ofdata_to_platdata = fsl_ahci_ofdata_to_platdata,
> +	.probe	= fsl_ahci_probe,
> +	.priv_auto_alloc_size = sizeof(struct fsl_ahci_priv),
> +};
> diff --git a/drivers/ata/fsl_sata.h b/drivers/ata/fsl_sata.h
> index 1e2da10b02..a4ee83d187 100644
> --- a/drivers/ata/fsl_sata.h
> +++ b/drivers/ata/fsl_sata.h
> @@ -312,6 +312,7 @@ typedef struct fsl_sata {
>   	int		wcache;
>   	int		flush;
>   	int		flush_ext;
> +	u32		dma_flag;
>   } fsl_sata_t;
>   
>   #define READ_CMD	0
> 

Viele Grüße,
Stefan

-- 
DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-51 Fax: (+49)-8142-66989-80 Email: sr at denx.de


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