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181 lines
4.4 KiB
181 lines
4.4 KiB
/* |
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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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