Commit 75742cb4 authored by Alan Cox's avatar Alan Cox Committed by Jeff Garzik

[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
......@@ -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
......
......@@ -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
......
/*
* 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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