Commit 75742cb4 authored by Alan Cox's avatar Alan Cox Committed by Jeff Garzik
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[PATCH] pata_marvell: Marvell 6101/6145 PATA driver 



This is a legacy mode PATA driver for the 6101/45 and will also drive
the SATA ports 1 & 2 in legacy mode as well if desired. Tested and
confirmed working by users. The chip supports AHCI type behaviour for
SATA and has a more advanced PATA interface as well so this driver will
get it working but not get best performance for now.

Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent 72dc6794

drivers/ata/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -328,6 +328,15 @@ config PATA_TRIFLEX 


	  If unsure, say N.



config PATA_MARVELL

	tristate "Marvell PATA support via legacy mode"

	depends on PCI

	help

	  This option enables limited support for the Marvell 88SE6145 ATA

	  controller.



	  If unsure, say N.



config PATA_MPIIX

	tristate "Intel PATA MPIIX support"

	depends on PCI

drivers/ata/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -38,6 +38,7 @@ obj-$(CONFIG_PATA_NETCELL) += pata_netcell.o 
obj-$(CONFIG_PATA_NS87410)	+= pata_ns87410.o

obj-$(CONFIG_PATA_OPTI)		+= pata_opti.o

obj-$(CONFIG_PATA_OPTIDMA)	+= pata_optidma.o

obj-$(CONFIG_PATA_MARVELL)	+= pata_marvell.o

obj-$(CONFIG_PATA_MPIIX)	+= pata_mpiix.o

obj-$(CONFIG_PATA_OLDPIIX)	+= pata_oldpiix.o

obj-$(CONFIG_PATA_PCMCIA)	+= pata_pcmcia.o

drivers/ata/pata_marvell.c

0 → 100644
+221 −0
Original line number Diff line number Diff line 
/*

 *	Marvell PATA driver.

 *

 *	For the moment we drive the PATA port in legacy mode. That

 *	isn't making full use of the device functionality but it is

 *	easy to get working.

 *

 *	(c) 2006 Red Hat  <alan@redhat.com>

 */



#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/pci.h>

#include <linux/init.h>

#include <linux/blkdev.h>

#include <linux/delay.h>

#include <linux/device.h>

#include <scsi/scsi_host.h>

#include <linux/libata.h>

#include <linux/ata.h>



#define DRV_NAME	"pata_marvell"

#define DRV_VERSION	"0.0.4t"



/**

 *	marvell_pre_reset	-	check for 40/80 pin

 *	@ap: Port

 *

 *	Perform the PATA port setup we need.

 */



static int marvell_pre_reset(struct ata_port *ap)

{

	struct pci_dev *pdev = to_pci_dev(ap->host->dev);

	u32 devices;

	unsigned long bar5;

	void __iomem *barp;

	int i;



	/* Check if our port is enabled */



	bar5 = pci_resource_start(pdev, 5);

	barp = ioremap(bar5, 0x10);

	if (barp == NULL)

		return -ENOMEM;

	printk("BAR5:");

	for(i = 0; i <= 0x0F; i++)

		printk("%02X:%02X ", i, readb(barp + i));

	printk("\n");

	

	devices = readl(barp + 0x0C);

	iounmap(barp);

	

	if (pdev->device == 0x6145 && ap->port_no == 0 && !(devices & 0x10))	/* PATA enable ? */

		return -ENOENT;



	/* Cable type */

	switch(ap->port_no)

	{

		case 0:

			/* Might be backward, docs unclear */

			if(inb(ap->ioaddr.bmdma_addr + 1) & 1)

				ap->cbl = ATA_CBL_PATA80;

			else

				ap->cbl = ATA_CBL_PATA40;

			

		case 1: /* Legacy SATA port */

			ap->cbl = ATA_CBL_SATA;

			break;

	}

	return ata_std_prereset(ap);

}



/**

 *	marvell_error_handler - Setup and error handler

 *	@ap: Port to handle

 *

 *	LOCKING:

 *	None (inherited from caller).

 */



static void marvell_error_handler(struct ata_port *ap)

{

	return ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset, NULL, ata_std_postreset);

}



/* No PIO or DMA methods needed for this device */



static struct scsi_host_template marvell_sht = {

	.module			= THIS_MODULE,

	.name			= DRV_NAME,

	.ioctl			= ata_scsi_ioctl,

	.queuecommand		= ata_scsi_queuecmd,

	.can_queue		= ATA_DEF_QUEUE,

	.this_id		= ATA_SHT_THIS_ID,

	.sg_tablesize		= LIBATA_MAX_PRD,

	.max_sectors		= ATA_MAX_SECTORS,

	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,

	.emulated		= ATA_SHT_EMULATED,

	.use_clustering		= ATA_SHT_USE_CLUSTERING,

	.proc_name		= DRV_NAME,

	.dma_boundary		= ATA_DMA_BOUNDARY,

	.slave_configure	= ata_scsi_slave_config,

	/* Use standard CHS mapping rules */

	.bios_param		= ata_std_bios_param,

};



static const struct ata_port_operations marvell_ops = {

	.port_disable		= ata_port_disable,



	/* Task file is PCI ATA format, use helpers */

	.tf_load		= ata_tf_load,

	.tf_read		= ata_tf_read,

	.check_status		= ata_check_status,

	.exec_command		= ata_exec_command,

	.dev_select		= ata_std_dev_select,



	.freeze			= ata_bmdma_freeze,

	.thaw			= ata_bmdma_thaw,

	.error_handler		= marvell_error_handler,

	.post_internal_cmd	= ata_bmdma_post_internal_cmd,



	/* BMDMA handling is PCI ATA format, use helpers */

	.bmdma_setup		= ata_bmdma_setup,

	.bmdma_start		= ata_bmdma_start,

	.bmdma_stop		= ata_bmdma_stop,

	.bmdma_status		= ata_bmdma_status,

	.qc_prep		= ata_qc_prep,

	.qc_issue		= ata_qc_issue_prot,

	.data_xfer		= ata_pio_data_xfer,



	/* Timeout handling */

	.eng_timeout		= ata_eng_timeout,

	.irq_handler		= ata_interrupt,

	.irq_clear		= ata_bmdma_irq_clear,



	/* Generic PATA PCI ATA helpers */

	.port_start		= ata_port_start,

	.port_stop		= ata_port_stop,

	.host_stop		= ata_host_stop,

};





/**

 *	marvell_init_one - Register Marvell ATA PCI device with kernel services

 *	@pdev: PCI device to register

 *	@ent: Entry in marvell_pci_tbl matching with @pdev

 *

 *	Called from kernel PCI layer.

 *

 *	LOCKING:

 *	Inherited from PCI layer (may sleep).

 *

 *	RETURNS:

 *	Zero on success, or -ERRNO value.

 */



static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *id)

{

	static struct ata_port_info info = {

		.sht		= &marvell_sht,

		.flags	= ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,



		.pio_mask	= 0x1f,

		.mwdma_mask	= 0x07,

		.udma_mask 	= 0x3f,



		.port_ops	= &marvell_ops,

	};

	static struct ata_port_info info_sata = {

		.sht		= &marvell_sht,

		/* Slave possible as its magically mapped not real */

		.flags	= ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,



		.pio_mask	= 0x1f,

		.mwdma_mask	= 0x07,

		.udma_mask 	= 0x7f,



		.port_ops	= &marvell_ops,

	};

	struct ata_port_info *port_info[2] = { &info, &info_sata };

	int n_port = 2;

	

	if (pdev->device == 0x6101)

		n_port = 1;

	

	return ata_pci_init_one(pdev, port_info, n_port);

}



static const struct pci_device_id marvell_pci_tbl[] = {

	{ PCI_DEVICE(0x11AB, 0x6101), },

	{ PCI_DEVICE(0x11AB, 0x6145), },

	{ }	/* terminate list */

};



static struct pci_driver marvell_pci_driver = {

	.name			= DRV_NAME,

	.id_table		= marvell_pci_tbl,

	.probe			= marvell_init_one,

	.remove			= ata_pci_remove_one,

};



static int __init marvell_init(void)

{

	return pci_register_driver(&marvell_pci_driver);

}



static void __exit marvell_exit(void)

{

	pci_unregister_driver(&marvell_pci_driver);

}



module_init(marvell_init);

module_exit(marvell_exit);



MODULE_AUTHOR("Alan Cox");

MODULE_DESCRIPTION("SCSI low-level driver for Marvell ATA in legacy mode");

MODULE_LICENSE("GPL");

MODULE_DEVICE_TABLE(pci, marvell_pci_tbl);

MODULE_VERSION(DRV_VERSION);

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