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