[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/os/linux/linux-3.4.x/drivers/pcmcia/cardbus.c b/ap/os/linux/linux-3.4.x/drivers/pcmcia/cardbus.c
new file mode 100644
index 0000000..6e75153
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/drivers/pcmcia/cardbus.c
@@ -0,0 +1,112 @@
+/*
+ * cardbus.c -- 16-bit PCMCIA core support
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ *
+ * (C) 1999 David A. Hinds
+ */
+
+/*
+ * Cardbus handling has been re-written to be more of a PCI bridge thing,
+ * and the PCI code basically does all the resource handling.
+ *
+ * Linus, Jan 2000
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+
+#include <pcmcia/ss.h>
+
+
+static void cardbus_config_irq_and_cls(struct pci_bus *bus, int irq)
+{
+ struct pci_dev *dev;
+
+ list_for_each_entry(dev, &bus->devices, bus_list) {
+ u8 irq_pin;
+
+ /*
+ * Since there is only one interrupt available to
+ * CardBus devices, all devices downstream of this
+ * device must be using this IRQ.
+ */
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &irq_pin);
+ if (irq_pin) {
+ dev->irq = irq;
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+ }
+
+ /*
+ * Some controllers transfer very slowly with 0 CLS.
+ * Configure it. This may fail as CLS configuration
+ * is mandatory only for MWI.
+ */
+ pci_set_cacheline_size(dev);
+
+ if (dev->subordinate)
+ cardbus_config_irq_and_cls(dev->subordinate, irq);
+ }
+}
+
+/**
+ * cb_alloc() - add CardBus device
+ * @s: the pcmcia_socket where the CardBus device is located
+ *
+ * cb_alloc() allocates the kernel data structures for a Cardbus device
+ * and handles the lowest level PCI device setup issues.
+ */
+int __ref cb_alloc(struct pcmcia_socket *s)
+{
+ struct pci_bus *bus = s->cb_dev->subordinate;
+ struct pci_dev *dev;
+ unsigned int max, pass;
+
+ s->functions = pci_scan_slot(bus, PCI_DEVFN(0, 0));
+ pci_fixup_cardbus(bus);
+
+ max = bus->secondary;
+ for (pass = 0; pass < 2; pass++)
+ list_for_each_entry(dev, &bus->devices, bus_list)
+ if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
+ dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
+ max = pci_scan_bridge(bus, dev, max, pass);
+
+ /*
+ * Size all resources below the CardBus controller.
+ */
+ pci_bus_size_bridges(bus);
+ pci_bus_assign_resources(bus);
+ cardbus_config_irq_and_cls(bus, s->pci_irq);
+
+ /* socket specific tune function */
+ if (s->tune_bridge)
+ s->tune_bridge(s, bus);
+
+ pci_enable_bridges(bus);
+ pci_bus_add_devices(bus);
+
+ return 0;
+}
+
+/**
+ * cb_free() - remove CardBus device
+ * @s: the pcmcia_socket where the CardBus device was located
+ *
+ * cb_free() handles the lowest level PCI device cleanup.
+ */
+void cb_free(struct pcmcia_socket *s)
+{
+ struct pci_dev *bridge = s->cb_dev;
+
+ if (bridge)
+ pci_stop_and_remove_behind_bridge(bridge);
+}