Adding upstream version 4.19.249.upstream/4.19.249upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 181 insertions, 0 deletions

diff --git a/drivers/ide/delkin_cb.c b/drivers/ide/delkin_cb.c
new file mode 100644
index 000000000..300daabaa
--- /dev/null
+++ b/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");
+