diff options
Diffstat (limited to 'kernel/drivers/ide/delkin_cb.c')
| -rw-r--r-- | kernel/drivers/ide/delkin_cb.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/kernel/drivers/ide/delkin_cb.c b/kernel/drivers/ide/delkin_cb.c new file mode 100644 index 000000000..300daabaa --- /dev/null +++ b/kernel/drivers/ide/delkin_cb.c @@ -0,0 +1,181 @@ +/* + * Created 20 Oct 2004 by Mark Lord + * + * Basic support for Delkin/ASKA/Workbit Cardbus CompactFlash adapter + * + * Modeled after the 16-bit PCMCIA driver: ide-cs.c + * + * This is slightly peculiar, in that it is a PCI driver, + * but is NOT an IDE PCI driver -- the IDE layer does not directly + * support hot insertion/removal of PCI interfaces, so this driver + * is unable to use the IDE PCI interfaces. Instead, it uses the + * same interfaces as the ide-cs (PCMCIA) driver uses. + * On the plus side, the driver is also smaller/simpler this way. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#include <linux/types.h> +#include <linux/module.h> +#include <linux/ide.h> +#include <linux/init.h> +#include <linux/pci.h> + +#include <asm/io.h> + +/* + * No chip documentation has yet been found, + * so these configuration values were pulled from + * a running Win98 system using "debug". + * This gives around 3MByte/second read performance, + * which is about 2/3 of what the chip is capable of. + * + * There is also a 4KByte mmio region on the card, + * but its purpose has yet to be reverse-engineered. + */ +static const u8 setup[] = { + 0x00, 0x05, 0xbe, 0x01, 0x20, 0x8f, 0x00, 0x00, + 0xa4, 0x1f, 0xb3, 0x1b, 0x00, 0x00, 0x00, 0x80, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0xa4, 0x83, 0x02, 0x13, +}; + +static const struct ide_port_ops delkin_cb_port_ops = { + .quirkproc = ide_undecoded_slave, +}; + +static int delkin_cb_init_chipset(struct pci_dev *dev) +{ + unsigned long base = pci_resource_start(dev, 0); + int i; + + outb(0x02, base + 0x1e); /* set nIEN to block interrupts */ + inb(base + 0x17); /* read status to clear interrupts */ + + for (i = 0; i < sizeof(setup); ++i) { + if (setup[i]) + outb(setup[i], base + i); + } + + return 0; +} + +static const struct ide_port_info delkin_cb_port_info = { + .port_ops = &delkin_cb_port_ops, + .host_flags = IDE_HFLAG_IO_32BIT | IDE_HFLAG_UNMASK_IRQS | + IDE_HFLAG_NO_DMA, + .irq_flags = IRQF_SHARED, + .init_chipset = delkin_cb_init_chipset, + .chipset = ide_pci, +}; + +static int delkin_cb_probe(struct pci_dev *dev, const struct pci_device_id *id) +{ + struct ide_host *host; + unsigned long base; + int rc; + struct ide_hw hw, *hws[] = { &hw }; + + rc = pci_enable_device(dev); + if (rc) { + printk(KERN_ERR "delkin_cb: pci_enable_device failed (%d)\n", rc); + return rc; + } + rc = pci_request_regions(dev, "delkin_cb"); + if (rc) { + printk(KERN_ERR "delkin_cb: pci_request_regions failed (%d)\n", rc); + pci_disable_device(dev); + return rc; + } + base = pci_resource_start(dev, 0); + + delkin_cb_init_chipset(dev); + + memset(&hw, 0, sizeof(hw)); + ide_std_init_ports(&hw, base + 0x10, base + 0x1e); + hw.irq = dev->irq; + hw.dev = &dev->dev; + + rc = ide_host_add(&delkin_cb_port_info, hws, 1, &host); + if (rc) + goto out_disable; + + pci_set_drvdata(dev, host); + + return 0; + +out_disable: + pci_release_regions(dev); + pci_disable_device(dev); + return rc; +} + +static void +delkin_cb_remove (struct pci_dev *dev) +{ + struct ide_host *host = pci_get_drvdata(dev); + + ide_host_remove(host); + + pci_release_regions(dev); + pci_disable_device(dev); +} + +#ifdef CONFIG_PM +static int delkin_cb_suspend(struct pci_dev *dev, pm_message_t state) +{ + pci_save_state(dev); + pci_disable_device(dev); + pci_set_power_state(dev, pci_choose_state(dev, state)); + + return 0; +} + +static int delkin_cb_resume(struct pci_dev *dev) +{ + struct ide_host *host = pci_get_drvdata(dev); + int rc; + + pci_set_power_state(dev, PCI_D0); + + rc = pci_enable_device(dev); + if (rc) + return rc; + + pci_restore_state(dev); + pci_set_master(dev); + + if (host->init_chipset) + host->init_chipset(dev); + + return 0; +} +#else +#define delkin_cb_suspend NULL +#define delkin_cb_resume NULL +#endif + +static struct pci_device_id delkin_cb_pci_tbl[] = { + { 0x1145, 0xf021, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + { 0x1145, 0xf024, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, + { 0, }, +}; +MODULE_DEVICE_TABLE(pci, delkin_cb_pci_tbl); + +static struct pci_driver delkin_cb_pci_driver = { + .name = "Delkin-ASKA-Workbit Cardbus IDE", + .id_table = delkin_cb_pci_tbl, + .probe = delkin_cb_probe, + .remove = delkin_cb_remove, + .suspend = delkin_cb_suspend, + .resume = delkin_cb_resume, +}; + +module_pci_driver(delkin_cb_pci_driver); + +MODULE_AUTHOR("Mark Lord"); +MODULE_DESCRIPTION("Basic support for Delkin/ASKA/Workbit Cardbus IDE"); +MODULE_LICENSE("GPL"); + |