224 lines
5.4 KiB
C
224 lines
5.4 KiB
C
|
|
/*
|
|
* Copyright (C) 2006 Red Hat <alan@redhat.com>
|
|
*
|
|
* May be copied or modified under the terms of the GNU General Public License
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/hdreg.h>
|
|
#include <linux/ide.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/io.h>
|
|
|
|
typedef enum {
|
|
PORT_PATA0 = 0,
|
|
PORT_PATA1 = 1,
|
|
PORT_SATA = 2,
|
|
} port_type;
|
|
|
|
/**
|
|
* ata66_jmicron - Cable check
|
|
* @hwif: IDE port
|
|
*
|
|
* Returns the cable type.
|
|
*/
|
|
|
|
static u8 __devinit ata66_jmicron(ide_hwif_t *hwif)
|
|
{
|
|
struct pci_dev *pdev = hwif->pci_dev;
|
|
|
|
u32 control;
|
|
u32 control5;
|
|
|
|
int port = hwif->channel;
|
|
port_type port_map[2];
|
|
|
|
pci_read_config_dword(pdev, 0x40, &control);
|
|
|
|
/* 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 << 3)) /* 40/80 pin primary */
|
|
return ATA_CBL_PATA40;
|
|
return ATA_CBL_PATA80;
|
|
case PORT_PATA1:
|
|
if (control5 & (1 << 19)) /* 40/80 pin secondary */
|
|
return ATA_CBL_PATA40;
|
|
return ATA_CBL_PATA80;
|
|
case PORT_SATA:
|
|
break;
|
|
}
|
|
/* Avoid bogus "control reaches end of non-void function" */
|
|
return ATA_CBL_PATA80;
|
|
}
|
|
|
|
static void jmicron_tuneproc(ide_drive_t *drive, u8 pio)
|
|
{
|
|
pio = ide_get_best_pio_mode(drive, pio, 5);
|
|
ide_config_drive_speed(drive, XFER_PIO_0 + pio);
|
|
}
|
|
|
|
/**
|
|
* jmicron_tune_chipset - set controller timings
|
|
* @drive: Drive to set up
|
|
* @speed: speed we want to achieve
|
|
*
|
|
* As the JMicron snoops for timings all we actually need to do is
|
|
* set the transfer mode on the device.
|
|
*/
|
|
|
|
static int jmicron_tune_chipset(ide_drive_t *drive, const u8 speed)
|
|
{
|
|
return ide_config_drive_speed(drive, speed);
|
|
}
|
|
|
|
/**
|
|
* jmicron_configure_drive_for_dma - set up for DMA transfers
|
|
* @drive: drive we are going to set up
|
|
*
|
|
* As the JMicron snoops for timings all we actually need to do is
|
|
* make sure we don't set an invalid mode.
|
|
*/
|
|
|
|
static int jmicron_config_drive_for_dma (ide_drive_t *drive)
|
|
{
|
|
if (ide_tune_dma(drive))
|
|
return 0;
|
|
|
|
jmicron_tuneproc(drive, 255);
|
|
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* init_hwif_jmicron - set up hwif structs
|
|
* @hwif: interface to set up
|
|
*
|
|
* Minimal set up is required for the Jmicron hardware.
|
|
*/
|
|
|
|
static void __devinit init_hwif_jmicron(ide_hwif_t *hwif)
|
|
{
|
|
hwif->speedproc = &jmicron_tune_chipset;
|
|
hwif->tuneproc = &jmicron_tuneproc;
|
|
|
|
hwif->drives[0].autotune = 1;
|
|
hwif->drives[1].autotune = 1;
|
|
|
|
if (!hwif->dma_base)
|
|
goto fallback;
|
|
|
|
hwif->atapi_dma = 1;
|
|
hwif->ultra_mask = 0x7f;
|
|
hwif->mwdma_mask = 0x07;
|
|
|
|
hwif->ide_dma_check = &jmicron_config_drive_for_dma;
|
|
|
|
if (hwif->cbl != ATA_CBL_PATA40_SHORT)
|
|
hwif->cbl = ata66_jmicron(hwif);
|
|
|
|
hwif->autodma = 1;
|
|
hwif->drives[0].autodma = hwif->autodma;
|
|
hwif->drives[1].autodma = hwif->autodma;
|
|
return;
|
|
fallback:
|
|
hwif->autodma = 0;
|
|
return;
|
|
}
|
|
|
|
static ide_pci_device_t jmicron_chipset __devinitdata = {
|
|
.name = "JMB",
|
|
.init_hwif = init_hwif_jmicron,
|
|
.autodma = AUTODMA,
|
|
.bootable = ON_BOARD,
|
|
.enablebits = { { 0x40, 0x01, 0x01 }, { 0x40, 0x10, 0x10 } },
|
|
.pio_mask = ATA_PIO5,
|
|
};
|
|
|
|
/**
|
|
* jmicron_init_one - pci layer discovery entry
|
|
* @dev: PCI device
|
|
* @id: ident table entry
|
|
*
|
|
* Called by the PCI code when it finds a Jmicron controller.
|
|
* We then use the IDE PCI generic helper to do most of the work.
|
|
*/
|
|
|
|
static int __devinit jmicron_init_one(struct pci_dev *dev, const struct pci_device_id *id)
|
|
{
|
|
ide_setup_pci_device(dev, &jmicron_chipset);
|
|
return 0;
|
|
}
|
|
|
|
/* All JMB PATA controllers have and will continue to have the same
|
|
* interface. Matching vendor and device class is enough for all
|
|
* current and future controllers if the controller is programmed
|
|
* properly.
|
|
*
|
|
* If libata is configured, jmicron PCI quirk programs the controller
|
|
* into the correct mode. If libata isn't configured, match known
|
|
* device IDs too to maintain backward compatibility.
|
|
*/
|
|
static struct pci_device_id jmicron_pci_tbl[] = {
|
|
#if !defined(CONFIG_ATA) && !defined(CONFIG_ATA_MODULE)
|
|
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB361) },
|
|
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB363) },
|
|
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB365) },
|
|
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB366) },
|
|
{ PCI_VDEVICE(JMICRON, PCI_DEVICE_ID_JMICRON_JMB368) },
|
|
#endif
|
|
{ PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
|
|
PCI_CLASS_STORAGE_IDE << 8, 0xffff00, 0 },
|
|
{ 0, },
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, jmicron_pci_tbl);
|
|
|
|
static struct pci_driver driver = {
|
|
.name = "JMicron IDE",
|
|
.id_table = jmicron_pci_tbl,
|
|
.probe = jmicron_init_one,
|
|
};
|
|
|
|
static int __init jmicron_ide_init(void)
|
|
{
|
|
return ide_pci_register_driver(&driver);
|
|
}
|
|
|
|
module_init(jmicron_ide_init);
|
|
|
|
MODULE_AUTHOR("Alan Cox");
|
|
MODULE_DESCRIPTION("PCI driver module for the JMicron in legacy modes");
|
|
MODULE_LICENSE("GPL");
|