254 lines
6.6 KiB
C
254 lines
6.6 KiB
C
/*
|
|
* pata_jmicron.c - JMicron ATA driver for non AHCI mode. This drives the
|
|
* PATA port of the controller. The SATA ports are
|
|
* driven by AHCI in the usual configuration although
|
|
* this driver can handle other setups if we need it.
|
|
*
|
|
* (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_jmicron"
|
|
#define DRV_VERSION "0.1.5"
|
|
|
|
typedef enum {
|
|
PORT_PATA0 = 0,
|
|
PORT_PATA1 = 1,
|
|
PORT_SATA = 2,
|
|
} port_type;
|
|
|
|
/**
|
|
* jmicron_pre_reset - check for 40/80 pin
|
|
* @ap: Port
|
|
* @deadline: deadline jiffies for the operation
|
|
*
|
|
* Perform the PATA port setup we need.
|
|
*
|
|
* On the Jmicron 361/363 there is a single PATA port that can be mapped
|
|
* either as primary or secondary (or neither). We don't do any policy
|
|
* and setup here. We assume that has been done by init_one and the
|
|
* BIOS.
|
|
*/
|
|
|
|
static int jmicron_pre_reset(struct ata_port *ap, unsigned long deadline)
|
|
{
|
|
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
|
|
u32 control;
|
|
u32 control5;
|
|
int port_mask = 1<< (4 * ap->port_no);
|
|
int port = ap->port_no;
|
|
port_type port_map[2];
|
|
|
|
/* Check if our port is enabled */
|
|
pci_read_config_dword(pdev, 0x40, &control);
|
|
if ((control & port_mask) == 0)
|
|
return -ENOENT;
|
|
|
|
/* There are two basic mappings. One has the two SATA ports merged
|
|
as master/slave and the secondary as PATA, the other has only the
|
|
SATA port mapped */
|
|
if (control & (1 << 23)) {
|
|
port_map[0] = PORT_SATA;
|
|
port_map[1] = PORT_PATA0;
|
|
} else {
|
|
port_map[0] = PORT_SATA;
|
|
port_map[1] = PORT_SATA;
|
|
}
|
|
|
|
/* The 365/366 may have this bit set to map the second PATA port
|
|
as the internal primary channel */
|
|
pci_read_config_dword(pdev, 0x80, &control5);
|
|
if (control5 & (1<<24))
|
|
port_map[0] = PORT_PATA1;
|
|
|
|
/* The two ports may then be logically swapped by the firmware */
|
|
if (control & (1 << 22))
|
|
port = port ^ 1;
|
|
|
|
/*
|
|
* Now we know which physical port we are talking about we can
|
|
* actually do our cable checking etc. Thankfully we don't need
|
|
* to do the plumbing for other cases.
|
|
*/
|
|
switch (port_map[port])
|
|
{
|
|
case PORT_PATA0:
|
|
if (control & (1 << 5))
|
|
return 0;
|
|
if (control & (1 << 3)) /* 40/80 pin primary */
|
|
ap->cbl = ATA_CBL_PATA40;
|
|
else
|
|
ap->cbl = ATA_CBL_PATA80;
|
|
break;
|
|
case PORT_PATA1:
|
|
/* Bit 21 is set if the port is enabled */
|
|
if ((control5 & (1 << 21)) == 0)
|
|
return 0;
|
|
if (control5 & (1 << 19)) /* 40/80 pin secondary */
|
|
ap->cbl = ATA_CBL_PATA40;
|
|
else
|
|
ap->cbl = ATA_CBL_PATA80;
|
|
break;
|
|
case PORT_SATA:
|
|
ap->cbl = ATA_CBL_SATA;
|
|
break;
|
|
}
|
|
return ata_std_prereset(ap, deadline);
|
|
}
|
|
|
|
/**
|
|
* jmicron_error_handler - Setup and error handler
|
|
* @ap: Port to handle
|
|
*
|
|
* LOCKING:
|
|
* None (inherited from caller).
|
|
*/
|
|
|
|
static void jmicron_error_handler(struct ata_port *ap)
|
|
{
|
|
return ata_bmdma_drive_eh(ap, jmicron_pre_reset, ata_std_softreset, NULL, ata_std_postreset);
|
|
}
|
|
|
|
/* No PIO or DMA methods needed for this device */
|
|
|
|
static struct scsi_host_template jmicron_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,
|
|
.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,
|
|
.slave_destroy = ata_scsi_slave_destroy,
|
|
/* Use standard CHS mapping rules */
|
|
.bios_param = ata_std_bios_param,
|
|
};
|
|
|
|
static const struct ata_port_operations jmicron_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 = jmicron_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_data_xfer,
|
|
|
|
/* IRQ-related hooks */
|
|
.irq_handler = ata_interrupt,
|
|
.irq_clear = ata_bmdma_irq_clear,
|
|
.irq_on = ata_irq_on,
|
|
.irq_ack = ata_irq_ack,
|
|
|
|
/* Generic PATA PCI ATA helpers */
|
|
.port_start = ata_port_start,
|
|
};
|
|
|
|
|
|
/**
|
|
* jmicron_init_one - Register Jmicron ATA PCI device with kernel services
|
|
* @pdev: PCI device to register
|
|
* @ent: Entry in jmicron_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 jmicron_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
|
|
{
|
|
static const struct ata_port_info info = {
|
|
.sht = &jmicron_sht,
|
|
.flags = ATA_FLAG_SLAVE_POSS,
|
|
|
|
.pio_mask = 0x1f,
|
|
.mwdma_mask = 0x07,
|
|
.udma_mask = 0x3f,
|
|
|
|
.port_ops = &jmicron_ops,
|
|
};
|
|
const struct ata_port_info *ppi[] = { &info, NULL };
|
|
|
|
return ata_pci_init_one(pdev, ppi);
|
|
}
|
|
|
|
static const struct pci_device_id jmicron_pci_tbl[] = {
|
|
{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361,
|
|
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 361 },
|
|
{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363,
|
|
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 363 },
|
|
{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365,
|
|
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 365 },
|
|
{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366,
|
|
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 366 },
|
|
{ PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368,
|
|
PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 368 },
|
|
|
|
{ } /* terminate list */
|
|
};
|
|
|
|
static struct pci_driver jmicron_pci_driver = {
|
|
.name = DRV_NAME,
|
|
.id_table = jmicron_pci_tbl,
|
|
.probe = jmicron_init_one,
|
|
.remove = ata_pci_remove_one,
|
|
#ifdef CONFIG_PM
|
|
.suspend = ata_pci_device_suspend,
|
|
.resume = ata_pci_device_resume,
|
|
#endif
|
|
};
|
|
|
|
static int __init jmicron_init(void)
|
|
{
|
|
return pci_register_driver(&jmicron_pci_driver);
|
|
}
|
|
|
|
static void __exit jmicron_exit(void)
|
|
{
|
|
pci_unregister_driver(&jmicron_pci_driver);
|
|
}
|
|
|
|
module_init(jmicron_init);
|
|
module_exit(jmicron_exit);
|
|
|
|
MODULE_AUTHOR("Alan Cox");
|
|
MODULE_DESCRIPTION("SCSI low-level driver for Jmicron PATA ports");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
|
|
MODULE_VERSION(DRV_VERSION);
|
|
|